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    • 专利摘要:
    1/1 summary "personal care compositions" is a personal care composition that includes a cleaning phase and a benefit phase. the cleaning phase includes a surfactant and the benefit phase includes a benefit agent, wherein the benefit agent comprises a sucrose polyester with an iodine value of 3 or more.
    公开号:BR112013031714B1
    申请号:R112013031714
    申请日:2012-06-08
    公开日:2018-05-08
    发明作者:Ann Tirey Debra；Shiqing Wei Karl；Stella Qing；Manuel Arredondo Victor；Ji Wei；Randall Belcher William
    申请人:Procter & Gamble；
    IPC主号:
    专利说明:

    (54) Title: PERSONAL CARE COMPOSITIONS (51) Int.CI .: A61K 8/03; A61K 8/60; A61Q 19/10; 1/11 C11D; C11D 3/22 (52) CPC: A61K 8/03, A61K 8/60, A61Q 19/10, C11D 1/94, C11D 3/226 (30) Unionist Priority: 6/10/2011 US 61 / 495,543 (73 ) Holder (s): THE PROCTER & GAMBLE COMPANY (72) Inventor (s): KARL SHIQING WEI; QING STELLA; VICTOR MANUEL ARREDONDO; WEI Jl; WILLIAM RANDALL BELCHER; DEBRA ANN TIREY
    1/46
    PERSONAL CARE COMPOSITIONS
    FIELD OF THE INVENTION
    This application is directed to personal care compositions that include sucrose polyesters as a beneficial agent and methods related to that.
    BACKGROUND OF THE INVENTION
    Cleaning the skin is an activity that has been carried out for millennia. Over time, skin cleansing and methods related to skin cleansing have involved the use of soap, surfactants and the like. Nowadays, a predominant form of skin cleansing compositions is the liquid form, often known as liquid body soap. Users of liquid soaps enjoy the conveniences that these compositions offer, however, the experience is not ideal. Although skin cleansing compositions have evolved, solutions to the problems associated with these compositions have not. Many of the problems associated with current skin cleansing compositions and methods, particularly liquid body soap compositions, have not been resolved, and remain to this day as problems for users of these products.
    There is, therefore, a need for a personal care composition that offers superior cleaning performance without the negative elements previously associated with body soaps from the past, including high concentrations of surfactant, aggressiveness, stability problems, problems with tactile sensation and compatibility issues.
    2/46
    SUMMARY OF THE INVENTION
    A personal care composition comprises at least one structured cleaning phase and a benefit phase. The structured cleaning phase comprises: a) an aqueous structured surfactant phase comprising from about 5% to about 20%, by weight, of said composition for personal care, of an anionic surfactant; b) an amphoteric surfactant, a zwitterionic surfactant, or a combination thereof; and c) a structuring system that comprises an electrolyte. The benefit phase comprises from 0.1% to about 50%, by weight, of said personal care composition, of a benefit agent comprising a sucrose polyester, wherein the sucrose polyester has an iodine value of 3 or more.
    A personal care composition comprising: a) a structured aqueous phase comprising from about 5% to about 20%, by weight, of the personal care composition, a first surfactant; an amphoteric surfactant, zwitterionic surfactant or a combination thereof; and a structuring system comprising (i) a non-ionic emulsifier, (ii) an associative polymer and an electrolyte; and b) a benefit phase comprising from about 0.1% to about 50%, by weight, of the personal care composition, of a benefit agent comprising a sucrose polyester with an iodine value of about 10 at about 140.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 is a graph of the dissolution of compositions in the STnS series;
    Figure 2 is a graph of the rheology profile of compositions in the STnS series;
    3/46
    Figure 3 is a graph of Young's Module for the compositions of the STnS series;
    Figure 4 is a graph that captures the highest dilution that maintains 100% of the lamellar volume;
    Figure 5 is a graph of the phase transition during dilution of compositions of the STnS series;
    Figure 6 is a graph of the lamellar phase volume during the dilution level of an ST2S composition with different co-active agents;
    Figure 7 is a graph of the rheology profile of STnS compositions with different associative polymers;
    Figure 8 is a graph of the DPD Curvature of compositions of the STnS series;
    Figure 9 is an illustration to determine the volume of the third stage;
    Figure 10 depicts an esterification and saturation strip of a sucrose polyester that can be used in compositions presented in this document.
    Figure 11 is a graph showing the relationship between the iodine values of different sucrose polyesters and the frictional force.
    DETAILED DESCRIPTION
    Definitions
    The devices, apparatus, methods, components and / or compositions of the present invention may include, consist essentially of, or consist of the components of the present invention, as well as other ingredients described herein. For use in the present invention, the term essentially consisting of means that the devices, apparatus, methods, components and / or compositions may include additional ingredients, but
    4/46 only if they do not substantially alter the basic and innovative characteristics of the claimed devices, devices, methods, components and / or compositions.
    All percentages and ratios used in the present invention are expressed by weight of the total composition, and all measurements are made at 25 ° C, except where indicated otherwise.
    All measurements used in the present invention are in metric units, unless otherwise specified.
    The term anhydrous, for use in the present invention, unless otherwise indicated, refers to those compositions or materials containing less than about 10%, more preferably less than about 5%, more preferably even less than about 3 % and, even more preferably, zero percent by weight of water.
    The term multiphase for use in the present invention means that the compositions comprise at least two phases that are chemically distinct (for example, a surfactant phase and a benefit phase). These phases are in direct physical contact with each other and are not separated by a barrier. The personal care composition can be a multiphase personal care composition in which the phases of the personal care composition are merged or mixed to a significant degree. The personal care composition can also be a multiphase personal care composition in which the phases of the personal care composition are placed so as to occupy separate but distinct physical spaces within the package in which they are stored, but
    5/46 are in direct contact with each other (that is, they are not separated by a barrier and are not emulsified or mixed to any significant degree).
    The term packaging includes any container suitable for personal care compositions that exhibit a viscosity of about 1,500 centipoise (cP) to about 1,000,000 cP, including, but not limited to, a bottle, an inverted plastic tube, a tube , a pitcher, a non-aerosol pump and mixtures thereof.
    The term personal care composition, as used herein, refers to compositions intended for topical application to the skin and / or hair. The compositions of the present invention are rinse-off formulations, in which the product is applied topically to the skin or hair and then, after a few seconds to minutes, is subsequently rinsed with water from the skin or hair or otherwise removed using use of a substrate. The compositions can also be used as shaving or hair removal aids. The personal care composition of the present invention can typically be extruded or dispensed from a package. Multiphase personal care compositions typically exhibit a viscosity of about 1,500 centipoise (cP) to about 1,000,000 cP, as measured by the Viscosity Determination Method as described in the patent application assigned to the same assignee published on November 11, 2004 as US publication No. 2004 / 0223991A1 entitled Multi-phase Personal Care Compositions, filed on May 7, 2004 by Wei, et al. The multiphase personal care compositions of the present invention may be in the form of
    6/46 liquid, semi-liquid, cream, lotion or gel. Examples of personal care compositions of the present invention may include, but are not limited to, shampoo, conditioning shampoo, liquid body soap, liquid body moisturizing soap, shower gels, skin cleansing creams, cleansing milks, liquid soaps for hair and body, body moisturizer for use in the bath, shampoo for pets, shaving or waxing preparations and cleaning compositions used in conjunction with a disposable cleaning cloth.
    The term substantially free of, for use in the present invention means, except where otherwise indicated, that the composition includes less than about 5%, preferably less than about 3%, more preferably less than about 1% and, most preferably less than about 0.1% of the mentioned ingredient. For use in the present invention, the term exempt from means that the composition comprises 0% of the mentioned ingredient, that is, the ingredient has not been added to the composition, but may incidentally form as a by-product or as a reaction product of other components composition.
    For use in the present invention, the term stable means that the multiphase personal care composition comprises less than 10% by volume of the third phase, more preferably less than 5% by volume of the third phase, with most preference less than 1% by volume. volume of the third phase after being subjected to the rapid aging protocol and measurement of the third phase, as described below in the Method for determining the third phase.
    7/46
    For use in the present invention, the term structured means having a rheology that gives stability to the multi-phase composition. The degree of structure is determined by characteristics determined by means of one or more of the following methods: the Young's modulus method, the elastic limit method, the zero shear rate viscosity method, or the ultracentrifugation method, all presented in the Test Methods section below. Consequently, a surfactant phase of the multiphase composition of the present invention is considered to be structured if the surfactant phase has one or more of the following properties described below, according to the Young's Modulus Method, the Elastic Limit Method, the Viscosity method under zero shear rate or the Ultracentrifugation method. A surfactant phase is considered structured if the phase has one or more of the following characteristics:
    A. a Viscosity under Zero Shear Rate of at least about 100 Pascal-seconds (Pa.s), at least about 200 Pa.s, at least about 500 Pa.s, at least about 1,000 Pa.s at least about 1,500 Pa.s, or at least about 2,000 Pa.s; or
    B. a Structured Domain Volume Ratio, as measured by the Ultracentrifugation Method described later in this document, of more than about 40%, preferably at least about 45%, more preferably at least about
    50%, with more preference fur any less fence in 55%, with more preference fur any less fence in 60%, with more preference fur any less fence in
    8/46
    65%, with more preference fur any less fence in 70%, with more preference fur any less fence in 75%, with more preference fur any less fence in 80%, with more preference yet at least about
    85%; or with the utmost preference, at least about 90%.
    C. a Young's Modulus greater than about 2 Pascals (Pa), with more preference greater than about 10 Pa, with more preference even greater than about 20 Pa, with more preference even greater than about 30 Pa, 4 0 Pa, 50 Pa, 75 Pa or, with the most preference, greater than 100 Pa.
    For use in the present invention, the term surfactant component means the total of all anionic, nonionic, amphoteric, zwitterionic and cationic surfactants present in one phase. When calculations are based on the surfactant component, water and electrolyte are excluded from calculations involving the surfactant component, since surfactants, as manufactured, are typically diluted and neutralized.
    For use in the present invention, the term STnS means sodium tridecet sulfate, where n is defined as the average number of moles of ethoxylate per molecule. Tridecet is a 13-carbon branched ethoxylated hydrocarbon that can comprise an average of at least 1 methyl branch per molecule.
    For use in the present invention, the term LSS means sodium lauryl sulfate.
    For use in the present invention, the term visually distinct refers to a region of the multiphase personal care composition that has a composition
    9/46 average, in the sense of different from another region that has a different average composition, in which the regions are visible to the naked eye. This does not prevent the distinct regions from comprising two similar phases, with one phase comprising pigments, dyes, particles and several additional ingredients, thus forming a region of different average composition. A phase generally occupies one or more spaces with larger dimensions than the colloidal or subcolloidal components comprised by it. A phase can also be constituted or reconstituted, collected or separated into a phase volume, so that its properties can be observed, for example, by centrifugation, filtration or the like.
    Composition
    Composition for personal care with rinse comes in many forms, as well as the surfaces on which they are used. For example, personal care compositions with a rinse can be used on the skin. Depending, for example, on the care that a person has with their skin, the time and general health as a whole, a person's skin can be any one, from dry to oily. The use of a personal care composition with a cleansing phase can additionally exacerbate already dry skin or can dry normal to oily skin. One way to combat the drying effect of surfactants is to include a beneficial agent in the composition. Beneficial agents can be deposited on the skin when using a personal care composition and can act as an additional replacement or barrier to the skin to reduce the feeling of dryness left by some surfactants.
    10/46
    The disadvantage of using a beneficial agent in a personal care composition is that it can leave the skin feeling oily and / or sticky. As a drying sensation of a surfactant, the negative sensations of a beneficial agent can also make consumers unwilling to use the product. Thus, to develop a successful product, a formulator will need to understand the delicate balance between these issues.
    Among the benefit agents, some contribute more to an oily / sticky tactile sensation than others. This is sometimes seen even within a group of benefit agents. For example, the present inventors have surprisingly found that, when sucrose polyester is a beneficial agent, those with an iodine value of 3 or more provide better skin sensation. The sensation on the skin can be represented by a measurement called frictional force, which measures the amount of force exerted by a surface as an object moves on it. A high frictional force, of about 10.8 Newton (1,100 gf) or more, will predict an oily and / or sticky sensation on the skin, while a low frictional force of around 1,050 or less will predict a feeling smooth skin. Figure 11 is a graph showing the relationship of some values of iodine from sucrose polyesters to the frictional force.
    In addition to a skin sensation benefit, the use of a sucrose polyester with an iodine value of 3 or more also has a more translucent appearance. This can also drive consumer preference on the shelf
    11/46
    Cleaning phase
    The personal care composition of the present invention includes a cleaning step. The cleaning phase will comprise at least one anionic surfactant. The surfactant can be present from about 3% to about 20%, by weight, of the personal care composition. The cleaning phase can contain from 3% to about 20%, from about 5% to about 15%, from about 7% to about 15%, from about 5% to about 13%, or any combination of upper, lower and included limits within the ranges.
    The cleaning phase can be structured. When structured, the cleaning phase is comprised of a structured domain. The structured domain is preferably an opaque structured domain, which is preferably a lamellar phase. The lamellar phase can offer shear resistance, an adequate yield for the suspension of particles and droplets and which provides, at the same time, long-term stability, since it is thermodynamically stable. The lamellar phase tends to have a viscosity that minimizes the need for viscosity modifiers, but they can be included, if desired.
    Anionic surfactants can be either linear or branched. Examples of some suitable linear anionic surfactants include ammonium lauret sulfate, triethylamine lauryl sulfate, triethylamine lauret sulfate, triethanol amine lauryl sulfate, triethanol amine lauret sulfate, monoethanolamine lauryl sulfate, monoethanolamine lauryl sulfate, lauryl sulfate, diethyl lauryl sulfate diethanolamine sulfate, sodium lauryl monoglideride sulfate, sodium lauret sulfate, potassium lauret sulfate, sodium lauryl sarcosinate, lauryl
    12/46 sodium sarcosinate, lauryl sarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, sodium cocoyl isethionate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauryl sulfate, potassium cocoyl sulfate, potassium lauryl sulfate, cocoyl sulfate monoethanolamine, sodium tridecyl benzene sulfonate, sodium dodecyl benzene sulfonate, and combinations thereof.
    Examples of some suitable branched anionic surfactants include, but are not limited to, the following surfactants: sodium tridecet sulfate, sodium tridecyl sulfate, sodium C12-13 alkyl sulfate, sodium C 12-15 alkyl sulfate, sodium alkyl sulfate C 11-15 , sodium alkyl sulfate C 12-18 , sodium alkyl sulfate C 10 16, sodium paret sulfate C12-13, sodium paret n sulfate C12-13, sodium paret n sulfate C12-14, and combinations thereof. Other salts of all the aforementioned surfactants are useful, such as salts of TEA, DEA, ammonia, potassium. Useful alkoxylates include ethylene oxide, propylene oxide and alkoxylates mixed with EO / PO. Phosphates, carboxylates and sulfonates prepared from branched alcohols are also useful branched anionic surfactants. Branched surfactants can be derived from synthetic alcohols, such as the primary alcohols of liquid hydrocarbons produced by Fischer-Tropsch condensed synthesis gas, for example, Safol ™ 23 alcohol, available from Sasol North America, Houston, TX, USA; synthetic alcohols, such as Neodol ™ 23 alcohol, available from Shell Chemicals, USA; of synthetically produced alcohols, such as those described in US Patent No. 6,335,312 issued to Coffindaffer, et al on January 1, 2002. Preferred alcohols are Safol ™
    13/46 and Neodol ™ 23. Preferred alkoxylated alcohols are Safol ™ 23-3 and Neodol ™ 23-3. Sulphates can be prepared by conventional processes to a high purity degree from a sulfur-based SO3 airflow process, chlorosulfonic acid process, sulfuric acid process, or oil process. Preparation by air flow of SO3 in a downward film reactor is a preferred sulfation process.
    When the anionic surfactant comprises sodium tridecet (n) sulfate, from this point on in the present STnS document, where n defines the average moles of ethoxylation, n can be in the range of 0.5 to 2.7, from 1, 1 to 2.5, 1.8 to 2.2, about 2, or any combination of the endpoints and numerals included within the ranges. It should be understood that a material like ST2S, for example, can comprise a significant amount of molecules that have no ethoxylate, 1 mole of ethoxylate, 3 moles of ethoxylate, and so on, in a distribution that can be wide, narrow or truncated, still comprising ST2S, with an average distribution of about 2.
    It has been found that STnS that has less than 3 moles of ethoxylation offer surprising structural improvements. Figure 5 illustrates these improvements by comparing a composition that comprises ST1S, ST2S and ST3S. At increasing dilution levels, ST3S begins to transition from a lamellar structure to a micellar structure, initially having a surfactant content of around 19%. Thus, dilution beyond this level results in a loss of structure. This loss of structure has, until now, required concentrations
    14/46 higher surfactants were present inside a package. Compositions with ST2S can remain well structured up to a 13% dilution point of surfactant in this example, allowing the transition to a more micellar structure at much higher dilution levels. Compositions with ST1S can remain lamellar even at lower concentrations of surfactant.
    Although sodium tridecet sulfate was introduced and marketed, the use and benefits of sodium tridecet sulfate which has lower ethoxylation values were unknown, a basis further supported by the wide general acceptance of ST3S in commercially available products, and the lack commercial availability of products with lower ethoxylation. It is this unknown and surprising result that allows the various benefits of the personal care compositions of the present invention, including improved stability, smoothness, compatibility and foaming. Figures 2 to 8 show different supports for this.
    Without sticking to the theory, the basis for the enhanced function of STnS, where n is below 3, can be illustrated with the use of simulations of dissipative particle dynamics (DPD). With regard to STnS, the surfactant aggregates form curved surfaces based on the shape of the surfactant and the interactions between molecules, leading to surfactant architectures that are phases; and to a degree of phase structure as measured by rheology parameters, such as viscosity under zero shear rate. In order to measure the amount of curvature of the surfactant, molecular simulations were performed with the use of DPD, through the breakdown of surfactant atoms in microspheres,
    15/46 where a microsphere typically represents 3 to 4 heavy atoms. The simulations were carried out in a cubic cell with an edge length of approximately 25 nm. The compositions of the simulation boxes varied in mean amount of ethoxylation (n = 0 to 3) of the STnS. During the course of the simulations, the assembly of surfactants in aggregates was observed, starting from random positions. The DPD curvature was calculated as an average curvature over multiple independent simulations for the polar group of the surfactant-water surface of all the resulting objects in a simulation table, including all bilayers and micelles, being a relative measure of the deviation mean of the colligative surface of the polar group of the surfactant from the plane. The DPD curvature of zero consists of flat layers with edge defects, which do not form multilamellar vesicles and thus are not expected to exhibit structured rheology, for example, high viscosity at zero shear rate. At a DPD curvature of about 0.07 and greater, the formation of elongated micellar structures is observed. At an intermediate DPD curvature, curved bilayers can form multilamellar vesicles, leading to high viscosity under zero shear rate and stable compositions.
    As shown in Figure 9, the simulation results demonstrate that bilayers formed from STnS compositions have a lower DPD curvature of surfactant aggregates with decreasing n. The DPD curvature of ST0S compositions is too low to form compact vesicle structures, while the DPD curvature of ST3S compositions is too high, so that the viscosity under shear rate
    16/46 zero is not so high compared to ST2S compositions of the present invention. The preferred structure is observed for compositions of the present invention having a DPD curvature between about 0.03 and 0.045.
    STnS is often combined with LSS to form a surfactant system. The personal care compositions of the present invention may comprise less than about 5% LSS, less than about 4% LSS, less than about 3% LSS, less than about 2% LSS, less than about 1% LSS, between about 0.1% LSS and about 2% LSS or, about 0% LSS. Without sticking to the theory, the presence of LSS is believed to increase the severity of the personal care composition, at least in part invalidating the softness benefits and / or the effectiveness of the benefit agents contained in the personal care composition.
    Cotensoactive
    The personal care compositions of the present invention may further comprise a co-active agent. Cotensoatives in the present invention comprise from about 0.1% to 20% or from about 2% to about 10%, by weight, of the personal care composition. The co-surfactants of the present invention comprise amphoteric surfactants, zwitterionic surfactants or mixtures thereof.
    Amphoteric surfactants suitable for use include those that are widely described as derivatives of aliphatic secondary and tertiary amines, in which the aliphatic radical may be straight or branched chain and in which one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic water solubilizing group, for example, carboxyl, sulfonate, sulfate, phosphate or phosphonate. Examples of
    17/46 compounds that meet this definition are sodium 3-dodecyl amino propionate, sodium 3-dodecyl amino propane sulfonate, sodium lauryl sarcosinate, N-alkyl taurines, such as that prepared by the reaction of dodecyl amine with isethionate of sodium, as described in US patent No. 2,658,072, higher N-alkyl aspartic acids, such as those produced in accordance with US patent No. 2,438,091, and the products described in US patent No. 2,528 .378. Some more specific examples of suitable amphoteric surfactants include lauro anfoacetato, sodium cocoanfoacetate, lauro anfoacetato disodium, cocodianfoacetato disodium, or mixtures thereof. In addition, amphoacetates and dianfoacetates can also be used.
    Zwiterionic surfactants suitable for use in the composition include those that are widely described as derivatives of aliphatic quaternary ammonium, phosphonium and compound sulfonium, in which the aliphatic radicals can be straight or branched chain, and are characterized by the fact that one of the aliphatic substituents contains from about 8 to about 18 carbon atoms, and one contains an anionic group, for example, carboxy, sulfonate, sulfate, phosphate, or phosphonate. Zwitterionic surfactants suitable for use in the multiphase personal care composition include, for example, betaines, including cocoamidopropyl betaine.
    Structuring system
    The personal care composition can also include a structuring system. This system is often used in the cleaning phase to provide structure for the cleaning phase. A structuring system can include a
    18/46 electrolyte, an associative polymer and / or a nonionic emulsifier.
    An electrolyte can be present in about 0.5% to about 5%, by weight, of the personal care composition. Electrolytes suitable for use in the present invention include, for example, those comprising an anion selected from the group consisting of phosphate, chloride, sulfate, citrate, and mixtures thereof; and a cation selected from the group consisting of sodium, ammonium, potassium, magnesium and mixtures thereof. More specific examples of suitable electrolytes include sodium chloride, ammonium chloride, ammonium sulfate, and mixtures thereof.
    An associated polymer can be present at a level of about 10% or less by weight of the personal care composition. An example of suitable associative polymers includes Aqupec SER-300, available from Sumitomo Seika, Japan, which consists of C10-30 alkyl acrylate / acrylate cross polymer and comprises stearyl side chains with less than about 1% HM . Other associative polymers comprise side chains of stearyl, octyl, decila and lauryl. Some more exemplary associative polymers are Aqupec SER-150 (cross polymer of C10-30 alkyl acrylates / acrylates) which comprise about C18 (stearyl) in side chains and about 0.4% HM; Aqupec HV-701EDR which comprises about C8 (octyl) in side chains and about 3.5% HM; and Stabylen 30, produced by 3V Sigma S.p.A., which has branched side chains of associative hydrophobic isodecanoate.
    19/46
    Deposition Polymers
    The personal care compositions of the present invention can additionally comprise an organic cationic deposition polymer in one or more stages, as a deposition aid for the beneficial agents described herein. Cationic deposition polymers suitable for use in the compositions of the present invention contain cationic portions containing nitrogen, such as portions of quaternary ammonium. Some non-limiting examples of cationic deposition polymers for use in the personal hygiene composition include polysaccharide polymers, such as cationic cellulose derivatives. The preferred cationic cellulose polymers are the hydroxyl ethyl cellulose salts reacted with trimethyl ammonium substituted epoxide, cited in the industry (CTFA) as Polyquaternium 10, and which are available from Amerchol Corp. (Edison, N.J., USA) in their Polymer KG, JR and LR series polymers, with KG-30M being the most preferred. Other suitable cationic deposition polymers include derivatives of cationic guar gum, such as guar hydroxy propyl triammonium chloride, of which specific examples include the series
    Jaguar (preferably Jaguar C-17) commercially available from Rhodia Inc., and the N-Hance polymer series, commercially available from Aqualon.
    The deposition polymers of the present invention can have a cationic charge density of about 0.8 meq / g to about 2.0 meq / g, or about 1.0 meq / g to about 1.5 meq / g .
    Water
    The surfactant phase of the present invention also comprises water. The surfactant phase of the composition for
    20/46 personal care can comprise from about 10% to about 90%, from about 40% to about 85%, from about 60% to about 80%, by weight, of the water personal care composition , or any combination of the upper, lower limits, and included within the ranges.
    Benefit phase
    The personal care compositions of the present invention comprise a benefit phase. The benefit phase in the present invention is preferably hydrophobic. The benefit phase can be anhydrous, substantially free of water, or free of water. The benefit phase can be free or substantially free of surfactant.
    The benefit phase typically comprises benefit agents. The benefit phase may comprise from about 0.1% to about 50%, preferably from about 1% to about 30%, more preferably from about 5% to about 30%, by weight, of the personal care composition of a benefit agent.
    The primary benefit agent that can be included is one or more types of sucrose polyesters. Sucrose polyesters useful in the present invention can include polyester materials, which have multiple substitution positions around the sucrose backbone coupled with the chain length, saturation, and grease chain derivation variables. Sucrose polyesters exhibit an esterification and saturation range as shown in Figure 10.
    A useful sucrose polyester, such as a beneficial agent, may have an esterification (IBAR) greater than about 5, about 6, about 8, about
    21/46 to about 8, about 5 to about 7, or about to about 8. Since sucrose polyesters can be derived from a natural resource, there may be a distribution in IBAR and chain length. For example, a sucrose polyester that has an IBAR of 6 can include a blend that mainly includes an IBAR of about 6, with some IBAR of about 5 and some IBAR of about 7.
    In addition, sucrose polyester useful as, for example, a beneficial agent may have an iodine (IV) saturation or value of about 3 to about 140, about 5 to about 140, about 10 to about 140, about 10 to about 130, about 20 to 100, about 25 to about 130, or any combination of the upper, lower limits and included within the ranges. The sucrose polyester can also have a chain length of about C12 to C20.
    The benefit agent presented in this document can include a mixture or mixture of sucrose polyesters. For example, the beneficial agent may include a mixture or mixture of two or more sucrose polyesters. In such a mixture or mixture, at least one of the sucrose polyesters can have a melting point greater than about 30 ° C, an IBAR greater than about 5, an IV of about 3 to about 70 and at least one the other sucrose polyesters can have an IBAR of about 1 to about 8 and an IV of about 1 and about 135, so that the sucrose polyester blend or blend has an IBAR of at least 5 and an IV of about 1 and about 135. Additionally, in such a mixture or mixture, the ratio of sucrose polyesters that has a melting point greater than
    22/46 about 30 ° C, an IBAR greater than about 5, an IV of about 3 to about 70 with respect to sucrose polyesters that have an IBAR of about 1 and about 8, and an IV from about 1 to about 135 can be about 1: 2, about 1: 3, about 1: 5, about 3: 4, and about 3:10. Mixtures or blends of sucrose polyester can also have a G 'value of about 0.22 Pa at about 10,030 Pa at 0.01 Hz and a G value of about 0.83 Pa at about 23,960 a about 0.01 Hz.
    Examples of sucrose polyesters suitable for use in the present invention include, but are not limited to, Sefose 1618S, Sefose 1618U, Sefa Soyate IMF 40, Sefa Soyate LP426, Sefose 1618S B6, Sefose 1618U B6, Sefa cotton, all available from The Procter and Gamble Co. of Cincinnati, Ohio, USA. The sucrose ester and Sefose fatty acid distribution selected are mentioned in Figure 11.
    The benefit phase may also contain an additional benefit agent. Additional suitable benefit agents include, for example, glycerides, acetoglyceride esters, alkyl esters, alkenyl esters, polyglycerin fatty acid esters, lanolin, silicone oils, wax esters, glyceryl monooleate, glyceryl monostearate, monolaurate glycerol, glyceryl dilaurate, petrolatum, mineral oil, or combinations thereof.
    Non-limiting examples of glycerides suitable for use as beneficial agents in this document include castor oil, soybean oil, derivatized soybean oils, such as maleated soybean oil, safflower oil, cottonseed oil oil
    23/46 corn, walnut oil, peanut oil, olive oil, cod liver oil, almond oil, avocado oil, babassu oil and sesame oil, vegetable oils, sunflower seed oil, and vegetable oil derivatives; coconut oil and derivatized coconut oil, cotton seed oil and derivatized cotton seed oil, jojoba oil, cocoa butter and combinations thereof.
    Some non-limiting examples of acetoglyceride esters suitable for use as hydrophobic beneficial agents for the skin in the present invention include acetylated monoglycerides.
    Non-limiting examples of alkyl esters suitable for use as hydrophobic beneficial agents for the skin in this document include isopropyl fatty acid esters and long-chain esters of long-chain fatty acids (i.e., C10-C24), for example, cetyl ricinoleate, some non-limiting examples of which include isopropyl palmitate, isopropyl myristate, cetyl ricinoleate and stearyl ricinoleate. Other examples are: hexyl laurate, isohexyl laurate, myristyl myristate, isohexyl palmitate, decyl oleate, isodecyl oleate, hexadecyl stearate, decyl stearate, isopropyl isostearate, diisopropyl adipate, diisopropylate adipate diexil decila, diisopropyl sebacate, acyl isononanoate lauryl lactate, myristyl lactate, cetyl lactate and combinations of these substances.
    Some non-limiting examples of alkenyl esters suitable for use as hydrophobic beneficial agents for the skin in the present invention include
    24/46 oleyl myristate, oleyl stearate, oleyl oleate and combinations of these substances.
    Non-limiting examples of polyglycerin fatty acid esters suitable for use as hydrophobic beneficial agents for the skin in this document include decaglyceryl distearate, decaglycerine diiso-stearate, decaglycerine monomyriate, decaglycerine monolaurate, glyceryl monooleate, monooleate, glyceryl monoxide combinations themselves.
    Some non-limiting examples of lanolin and lanolin derivatives suitable for use as hydrophobic beneficial agents for the skin in the present invention include lanolin, lanolin oil, lanolin wax, lanolin alcohols, lanolin fatty acid, isopropyl lanolate, lanolin acetylated, acetylated lanolin alcohols, lanolin alcohol linoleate, lanolin alcohol ricinoleate and combinations of these substances.
    Some non-limiting examples of silicone oils suitable for use as hydrophobic beneficial agents for the skin in the present invention include dimethicone copolyol, dimethyl polysiloxane, diethyl polysiloxane, mixed C1-C30 alkyl polysiloxanes, phenyl dimethicone, dimethicone and combinations of these substances. Preferred are non-volatile silicones selected from dimethicone, dimethicone, C1-C30 mixed alkyl polysiloxane and combinations of these substances. Some non-limiting examples of silicone oils that can be used in the present invention are described in U.S. Patent No. 5,011,681 (Ciotti et al.).
    Other suitable hydrophobic skin benefit agents include milk triglycerides
    25/46 (eg hydroxylated milk glyceride) and polyol fatty acid polyesters.
    Still other suitable hydrophobic skin benefit agents include wax esters, some non-limiting examples of which include beeswax and beeswax derivatives, spermaceti, myristyl myristate, stearyl stearate and combinations of these substances. Vegetable waxes such as carnauba and candelilla waxes are also useful; sterols like cholesterol, cholesterol fatty acid esters; and phospholipids such as lecithin and derivatives, sphingo lipids, ceramides, glycosphingo lipids and combinations thereof. Beneficial agents that are also suitable include glycerol monooleate.
    Benefit agents for use in the benefit phase may include water insoluble or hydrophobic benefit agents, for example, with a Vaughan solubility parameter (VSP - Vaughan Solubility Parameter) of about 5 to about 15 or about 5 unless 10. These solubility parameters are well known in the formulation technique, and are defined by Vaughan in Cosmetics and Toiletries, Vol. 103, pgs. 47 to 69, October 1988.
    Additional ingredients
    Additional materials useful in the products of this document are categorized or described for their cosmetic and / or therapeutic benefits, or for their alleged modes of action or function. However, it should be understood that the asset and the other materials usable here may, in some cases, offer more than one function or more than one cosmetic and / or therapeutic benefit,
    26/46 or operate through more than one mode of action. Therefore, the classifications made here are for convenience purposes only and should not limit the use of the ingredient to the application, or applications, particularly indicated (s). The exact nature of these additional materials, and their levels of incorporation, will depend on the physical form of the composition and the nature of the cleaning operation for which it will be used.
    In order to further optimize stability under stress conditions, such as high temperature and vibration, it is preferable to adjust the densities of the separate phases so that they are substantially the same. To achieve this effect, low density microspheres can be added to one or more phases of the personal care composition, preferably to the structured surfactant phase. Personal care compositions comprising low density microspheres are described in a patent application published on May 13, 2004, under US patent publication 2004 / 0092415A1, entitled Striped Liquid Personal Cleansing Compositions Containing A Cleansing Phase and A Separate Phase with Improved Stability, and deposited on October 31, 2003 by Focht, et al.
    Other additional non-limiting ingredients that can be used in the personal care composition of the present invention may comprise a beneficial component that is selected from the group consisting of thickening agents, preservatives, microbicides, fragrances, chelators (for example, such as those described in the US patent. No. 5,487,884 granted to Bisset, et al.); kidnappers; vitamins (for example, Retinol); vitamin derivatives (for example, tocophenyl acetate, niacinamide, panthenol); sunscreens; assets of
    27/46 sensory medicines;
    flaking (for example, as described in U.S. Patent No. 5,681,852 and 5,652,228 issued to Bisset); anti-wrinkle / anti-atrophy actives (for example, N-acetyl derivatives, thiols, hydroxyl acids, phenol); antioxidants (eg, ascorbic acid derivatives, tocophenol) skin softening agents / skin healing agents (eg, pantenoic acid derivatives, aloe vera, allantoin); skin lightening agents (for example, cojic acid, arbutin, ascorbic acid derivatives) skin tanning agents (for example, dihydroxyacetone);
    essencial oils; coloring elements; pearling agents;
    interference pigments (for example, such as those presented in US Patent No. 6,395,691, granted to Liang Sheng Tsaur, US Patent No. 6,645,511, granted to Aronson, et al., US Patent No. 6,759,376, granted to Zhang, et al, US Patent No. 6,780,826, granted to Zhang, et al.) (e.g., talc, kaolin, mica, clay cellulose powder, polysiloxane, silica, antiacne;
    pigments;
    smectite particles, carbonates, titanium dioxide, polyethylene microspheres) other than platelet (for example, hydrophobically modified particle dioxide hydrophobically modified titanium and other materials described in a patent application assigned to the same assignee published on August 17, 2006 under Publication No. 2006 / 0182699A, entitled Personal Care Compositions Containing Hydrophobically Modified Non-platelet particle deposited on February 15, 2005 by Taylor, et al.) and mixtures thereof. In one aspect, the multiphase personal care composition can comprise from about 0.1% to
    28/46 about 4% by weight of the multiphase personal care composition of hydrophobically modified titanium dioxide.
    are more
    Other additional ingredients typically, those materials approved for use in cosmetics, which are described in the CTFA Cosmetic Ingredient Handbook, Second Edition, The Cosmetic,
    Toiletries, and Fragrance Association, Inc. 1988, 1992.
    Testing methods
    The present invention uses a number of test methods to determine various metrics of the structure. The methodology for these tests and the associated examples are illustrated below.
    Viscosity methods under zero shear rate and young modulus
    The zero-shear viscosity of a material that is a phase or composition of the present composition, can be measured before combining it with the composition, after preparing a composition, or by first separating a phase or component of a composition by suitable means of physical separation, such as centrifugation, pipetting, mechanical cutting, rinsing, filtration, or other means of separation.
    A voltage controlled rheometer like an AR2000 rheometer from TA Instruments is used to determine viscosity under zero shear rate. The determination is carried out at 25 ° C, with the measurement system by parallel plate with 4 cm in diameter, and a gap of 1 mm. The geometry has a shear stress factor of 79580 m-3 to convert the torque obtained into the stress. Serrated plates can be used to obtain consistent results when slip occurs.
    29/46
    First, the material is positioned on the base plate of the rheometer, then the measurement geometry (upper plate) is moved to its position 1.1 mm above the base plate. Excess material at the edge of the geometry is scraped off after locking the geometry. The geometry is then moved to the target position 1 mm above the base plate, with a pause of about 2 minutes to allow the relaxation of the load stresses. This loading procedure ensures that no tangential stress is loaded at the beginning of the measurement, which can influence the results obtained. If the material comprises particles discernible with the naked eye or by tactile sensation (microspheres, for example), which are larger than about 150 microns in average numerical diameter, the gap adjustment between the base plate and the upper plate is increased to the less than 4 mm or 8 times the diameter of the 95th percentile volume of the particle diameter. If a phase has any particle larger than 5 mm in any dimension, the particles are removed before measurement.
    The measurement is carried out by applying a continuous shear stress ramp from 0.1 Pa to 1,000 Pa over a 4 minute time interval using a logarithmic progression, that is, with evenly spaced measurement points on a logarithmic scale. Thirty (30) measurement points are obtained per series of ten incremental efforts. If the measurement result is incomplete, for example if material is observed to flow from the gap, the results obtained are evaluated to the exclusion of incomplete data points. If there are insufficient points to obtain a measurement
    30/46 accurate, the measurement is repeated with a larger number of sampling points.
    Young's Modulus (Pa) is obtained by plotting a Stress (Pa) versus Deformation (dimensionless) graph, and obtaining the slope of the regression line of the initial linear region between Stress and Deformation, which typically occurs in the region below about 4% deformation. If the relationship is not linear, the slope of the linear regression line below 2% deformation is taken as the Young's modulus (Pa), using the dimensionless deformation.
    Viscosity at zero shear rate is obtained by taking a first median viscosity value in Pascal-seconds (Pa.s) for viscosity data obtained between, and even, 0.1 Pa and the point at which viscosity begins to decline sharply. After writing down the first median viscosity, all viscosity values greater than 5 times the first median value and less than 0.2x the median value are excluded, and a second median viscosity value is obtained from the same viscosity data, excluding the indicated data points. The second median viscosity obtained in this way is the viscosity at zero shear rate.
    The compositions of the present invention have a viscosity under zero shear rate of at least about 100 Pa.s, at least about 300 Pa.s, at least about 500 Pa.s, at least about 1,000 Pa.s, at least about 1,500 Pa.s, or at least about 2,000 Pa.s.
    The compositions of the present invention have a Young's modulus of about at least 2 Pa, at least about
    31/46
    Pa, at least about 10 Pa, at least about 20 Pa, at least about 30 Pa, at least about 40 Pa, at least about 50 Pa, or at least about 75 Pa.
    Ultracentrifugation method
    The Ultracentrifugation Method is a physical method used to determine the amount of structure in a composition or in a subset of a composition. The method is also used to determine the rate at which a structured surfactant composition dissolves, after dilution to present effective amounts of surfactant to the cleaning environment proximal to the surfaces.
    A composition is separated by ultracentrifuge into separate, yet distinguishable layers. The multiphase personal care composition of the present invention can have multiple distinguishable layers (for example, a structured surfactant layer and a benefit layer).
    First, dispense about 4 grams of composition in a Beckman centrifuge tube (11 x 60 mm), until the tube is filled. Then, dilute the composition to a 10% dilution level using 90% of the composition and 10% deionized water, using a suitable mixer, and dispense the same amount of composition in a similar centrifuge tube. Continue diluting the composition and filling tubes in the same way, until a dilution level of 60% is obtained for the composition, using 40% of the composition with 60% deionized water. Place the centrifuge tubes in an ultracentrifuge (Beckman model L8-M or equivalent) using a belt rotor, and ultracentrifuge using the following conditions: 50,000 rpm, 2 hours, and 40 ° C.
    32/46
    Measure the relative phase volumes of the composition phases, by measuring the height of each layer using a digital electronic gauge (with an accuracy of 0.01 mm). The layers are identified, by those skilled in the art, by physical observation techniques combined with chemical identification, if necessary. For example, the structured surfactant layer is identified, for the present invention, by transmission electron microscopy (TEM), polarized light microscopy, and / or X-ray diffraction, as a structured lamellar phase comprising multilamellar vesicles, and the layer hydrophobic benefit is identified by its low moisture content (less than 10% water, as measured by Karl Fischer titration). The total height Ha, which includes all materials in the ultracentrifuge tube, is measured. Then, the height of each layer is measured from the bottom of the centrifuge tube to the top of the layer, and the extent of each layer is determined algebraically by subtraction. The benefit layer can comprise several layers if the benefit phase has more than one component that can separate into phases of liquid and waxy layers, or if there is more than one beneficial component. If the benefit phase splits, the sum of the measured benefit layers is the height of the benefit layer, Hb ,. In general, a hydrophobic benefit layer, when present, is on top of the centrifuge tube.
    The surfactant phase can comprise several layers or a single layer, Hc. There may also be an unstructured, isotropic, colorless micellar layer at the bottom or near the bottom of the ultracentrifuge tube. The layers immediately above the isotropic phase generally
    33/46 comprise a higher concentration of surfactants with more ordered structures (such as liquid crystals). These structured layers are sometimes either opaque, or translucent, or clear to the naked eye. Several structured layers can be present, in which case, Hc is the sum of the individual structured layers. If any type of polymer-surfactant phase is present, it is considered a structured phase and included in the measurement of Hc. The sum of the aqueous phases is Hs.
    Finally, the volume ratio of the structured domain is calculated as follows:
    Structured Domain Volume Ratio = Hc / Hs * 100%
    If there is no benefit phase present, the total height should be used as the height of the surfactant layer, Hs = Ha. For the present invention, the Ratio between structured domain volumes is the percentage of lamellar phase. The measurement is made for each prepared and centrifuged dilution, that is, the ratio between structured domain volumes is determined for the composition, and for 90%, 80%, 70% and 60% dilutions prepared as indicated above.
    The highest amount of dilution (i.e., the lowest dilution level) at which the composition maintains at least 95% of the lamellar phase percentage is an indicator of the amount of structure for compositions having different values of n for STnS.
    The highest dilution at which the composition has at least 95% lamellar phase can be greater than about 15%, greater than about 25% or greater than about 35%.
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    The composition can have a structured domain volume ratio of at least about 40%, at least about 45%, at least about 50%, at least about 55%, at least about 60%, at least about 65%, at least about 70%, at least about 75%, at least about 80%, at least about 85%, and greater than about 90%, by volume, of the aqueous surfactant composition.
    Dilution method by ultracentrifugation
    The Ultracentrifugation Dilution Method is a physical method used to determine the amount of structure in a composition at a certain point in its dilution profile, which refers to the composition's ability to foam. The Ultracentrifugation Dilution Method uses the results of the Ultracentrifugation Method at the 50% dilution point. When consumers use surfactant compositions with an implement, such as a bath loofah or a Puff, about 10 ml of composition is typically dosed on the implement, which can contain about 10 ml of water in it. Consumers stir to foam, requiring the composition to quickly dissolve at this dilution force. The ability of structured surfactant compositions to dissolve at 50% dilution is measured by the method.
    The method is identical, in all its details, to the ultracentrifugation method. The result at 50% dilution is obtained for a composition and is expressed as Lamellar phase volume in 50% dilution.
    The results obtained in the Ultracentrifugation Dilution Method are parallel to the results obtained for the Dissolution Rate Test for the compositions of the present invention comprising STnS, which reaffirms the
    35/46 relationship between high structure and reduced foam formation, and vice versa, leading to improved stability and aesthetics of use within a narrower range of values of n for STnS. The ST0S composition of Example 4, being relatively unstructured, has a low structure after dilution, but is unsuitable for the purposes of a structured surfactant composition due to its inability to provide the stabilization indispensable to a composition based on its rheology. The ST3S composition of Example 1 has sufficient structure and rapidly dilutes into micellar surfactants useful for foaming and cleaning, but, disadvantageously, these ST3S compositions cannot be readily formulated into compositions that comprise reduced levels of surfactant, and will always remain expensive , ineffective, environmentally less preferred and less smooth. The ST1S composition of Example 3 has 100% Lamellar Phase Volume in 50% dilution, which will result in unsatisfactory foaming and cleaning characteristics in many modes of use. The ST2S composition of Example 2 demonstrates versatility in that it has a high degree of structure and yet is diluted enough to provide a good result in terms of foaming, the performance of the foam being supported by its value of 70% for Lamellar phase volume in 50% dilution. ST2S compositions can be prepared with reduced levels of surfactant, for example to 15%, or 12%, or 10% or 8% or even 6% of surfactant, and retain many of the preferred features of the present invention.
    36/46
    The lamellar phase volume diluted by 50% for a personal care composition can be less than about 90%, less than about 80%, or less than 75%.
    Dissolution rate method
    Structured compositions are prone to slow dissolution, which can result in unsatisfactory foaming and cleaning characteristics. The slowly dissolving structured surfactant phases have largely been behind the development of the Puff implement for many years, and a shaking implement that encourages dissolution, foaming and cleaning. Foaming and cleaning result from the ability of aqueous surfactant molecules to diffuse and stabilize interfaces with air and dirt surfaces. When surfactants remain trapped in lamellar structures or other organized structures, they are unable to diffuse into the aqueous phase and, therefore, must first dissolve as individual surfactant monomers and micelles to be effective. Dilution and agitation encourage dissolution during use. The Dissolution Rate Method measures the extent of dissolution of a surfactant composition in water.
    IS got a beaker in glass with straight walls that has one internal diameter (i. d. - inside diameter) of 63 mm and an internal height of 87 mm, for example, Pyrex's 250 ml (n ° 1000), which are widely available.
    150 grams of distilled water at room temperature (24 ° C (75 ° F)) are poured into the beaker. A magnetic stir bar coated with Teflon® is added to the beaker. The stir bar is nominally 3.8 cm (1.5 inches) long x 0.8 cm (5/16 inches) in diameter and e
    37/46 is octagonal in shape when viewed from the end, and has a molded pivot ring 0.16 cm (1/16 in.) Wide around its center, the diameter being increased to about 0.9 cm (0.35 in). Spinbar® magnetic stir bars are available from Sigma Aldrich Corp. worldwide, including Milwaukee, WI, USA, and www.sigmaaldrich.com.
    Measure and note the initial conductivity of the water using a conductivity meter, for example, a Mettler-Toledo SevenMulti meter with InLab740 probe, and note the value. The conductivity of the water needs to be about 2 microSiemens / cm (uS / cm) or less to indicate the presence of a low content of dissolved solids. Remove the conductivity probe from the water and place the beaker on a digitally controlled laboratory stirrer, for example an Ika® Werke RET Control-visc, available for example from DivTech Equipment Co, Cincinnati, OH, USA. The beaker is centered on the agitator which, in turn, is activated to obtain a constant rotation speed of 500 rpm, establishing a vortex in the water that measures about 3 cm in depth from the highest point of the water at the edge of the beaker and to the lowest point in the air at the center of the vortex. Observe the top vortex to ensure that it is centered in the beaker, and that the magnetic stir bar is centered in the center of the vortex.
    Obtain a cleaning phase and fill with a 1 ml syringe with no air capture. The syringe has a diameter of about 1.9 mm at the tip (for example, a 1 ml BD type slip tip for tuberculin, from Becton, Dickinson and Co., Franklin Lakes, NJ, USA). Inject the cleaning phase in a constant current over
    38/46 the upper surface of the water, close to the edge of the beaker but without touching it. The composition needs to be injected in about 1 second. Start a timer and allow the composition to stir for 30 seconds.
    Turn off the stirrer. Insert the conductivity probe into the water, in a location away from any undissolved solids. Allow the measurement to stabilize, take a conductivity reading, and note the Conductivity.
    Reconnect the stirrer. Restart the timer when the digital reading exceeds 250 rpm. After an additional 30 seconds, switch off the stirrer and measure the conductivity in the same way as previously performed. Note the conductivity.
    Reconnect the stirrer. Restart the timer when the digital reading exceeds 250 rpm. After an additional 60 seconds, switch off the stirrer and measure the conductivity in the same way as previously performed. Note the conductivity.
    Remove the probe from the water without disturbing any remaining solids. Cap the beaker with a suitable waterproof cap, for example with a plastic wrap and a rubber strip. Shake the beaker vigorously for about 30 seconds to dissolve the remaining solids, using a vortex mixer in addition, if necessary.
    Uncap the beaker, measure the conductivity and note the value as Final Conductivity.
    The percentage of dissolution at each point in time is calculated according to the following equation:
    39/46
    Dissolution percentage = 100% x (Conductivity Initial water conductivity) (Final conductivity - Initial water conductivity)
    Repeat the measurement as necessary to obtain a representative average value.
    The dissolution test data for STnS compositions are illustrated in Figure 1.
    At the 60 second point in time, the compositions of the present invention have a dissolution percentage of at least about 60%, at least about 70% or at least about 80%. At the 120 second time point, the compositions of the present invention have a dissolution percentage of at least about 80%, at least about 85%, at least about 90%, or at least about 95%.
    Third-phase method for determining the stability of the structured surfactant:
    used for surfactant is
    of determining third phase method the stability of the structured phase in a personal hygiene composition. The method involves placing personal care compositions at 50 ° C for 10 days for rapid aging. After rapid aging, transfer about 4 grams of the composition into a Beckman centrifuge tube (11 x 60 mm). Place the centrifuge tube in a Beckman LE-80 ultracentrifuge and operate the ultracentrifuge under the following conditions: 50,000 rpm, 2 hours and 40 ° C.
    After ultracentrifugation, determine the volume of the third phase by measuring the height of the various phases of the surfactant using a digital electronic gauge (accurate to 0.01 mm), as illustrated in
    40/46
    Figure 10. In Figure 10 is shown an example of a personal hygiene composition comprising Expancel microspheres.
    The topmost layer is the hydrophobic benefit phase layer (hydrocarbons or soybean oil, etc.). The layers below the hydrophobic benefit phase layers contain surfactant / water, and are determined as follows: Ha is the height of all layers containing surfactant / water, and Hb is the height of the colorless layer of the third phase, just below of the hydrophobic benefit phase layer. It is important to record readings within 30 min. after ultracentrifugation is finished, to minimize material migration between different layers. The volume of the third stage is calculated as:
    % of the volume of the third phase = H b / H a * 100%
    Preferably, the structured surfactant composition comprises less than 10% by volume of the third phase, after the fast aging stability protocol. More preferably, the structured surfactant composition comprises less than 5% by volume of the third phase, after the fast aging stability protocol. More preferably, the structured surfactant composition comprises less than 2% by volume of the third phase, after the fast aging stability protocol. Even more preferably, the structured surfactant composition comprises less than 1% by volume of the third phase, after the rapid aging protocol. With the utmost preference, the structured surfactant composition comprises about 0%
    41/46 in volume of the third phase, after the rapid aging protocol.
    Examples
    The following examples describe and demonstrate compositions within the scope of the invention, unless otherwise noted. The examples are provided for illustrative purposes only and should not be considered as limitations to the present invention, since many variations of it are possible, without deviating from the character and scope of the invention. For example, it is contemplated that other compositions, such as liquid hand soap, facial cleanser and hand dish washing soap, can also be formulated with this invention.
    A vanilla surfactant-based composition from Table I (below) can be prepared by pre-mixing the Aqupec polymer with Tridecet-3. Add water, guar hydroxy propyl triamonium chloride, sodium chloride under mixing. Then, add sodium tridecet-2 sulfate, cocamido propyl betaine, and the tridecet3 / Aqupec premix. Then add citrus to adjust the pH to 5.7. Then, add preservatives and perfume. Continue mixing until homogeneity is achieved.
    Table I
    vanilla surfactant base compositions (VB surfactant) (% weight / weight) Tridecet-2 sodium sulfate 8.2% Cocamido Propyl Betaine 2.3% Tridecet-3 1.0% Guar hydroxy propyl triamonium chloride 0.42% Cross polymer of acrylates / alkyl acrylates C10-C30 (Aqupec SER 300) 0.2% Sodium chloride 4.75%
    42/46
    citric acid / sodium hydroxide pH = 5.7 water, perfume, preservatives q.s.
    Table II
    The following are compositions of Sepphose materials with different degrees of esterification (1 to 8) and I-BAR values.
    Material Sepphose SE 1 SE 2 SE 3 SE 4 SE 5 SE 6 SE 7 SE 8 I-BAR Sepphose 1618U B6 0 0 0 3.9 17.9 14.9 39.3 24.0 6.10 Sepphose 1618U 0 0 0 0 0 0.0 22.0 78.0 7.76 Sepphose 1618S 0 0 0 0 0 0.4 25.0 74.6 7.71 Sefose1618S B6 0.1 0.3 1.3 8.5 22.6 27.7 26.3 14.7 5.98 Sefose1618H 0 0 0 0 0.3 1.5 28.5 69.6 7.65 Sefa Soyate IMF 40 0 0 0 0 0.3 1.3 28.6 69.7 7.64 Sefa algodoato 0 0 0 0 0.5 1.0 22.5 76.0 7.70 Sefa Soyate LP426 0 0 0 0 0 0 25.2 74.8 7.72
    Table III
    The following are compositions of Sefose 10 materials with different chain length distributions, unsaturations, and IR values.
    MaterialSepphosis C14 C16 C18: 0 C18: 1t C18: 1ç C18: 2t, t C18: 2 c, t or t, c C18: 2c, c C18: 3 C20 C22 IV Sepphosis1618U B6 0.16 12.24 4.67 0.68 24.28 0 0.54 50.35 6.17 0.29 0 121 Sepphosis1618U 0.1 10 4 0 22 0 0 54 8 0.2 0 128 Sepphosis1618S 0.13 11.94 7.8 15.52 44.15 1.16 1.54 15.49 0.93 0.31 0 82 Sepphosis1618S B6 0.25 14.53 7.01 13.11 41.76 1.19 1.68 18.65 0.65 0.27 0 83 Sepphosis1618H 0.16 12.43 84.77 1.05 0.88 0 0 0 0 0.48 0 2 Sefa 0.1 11.7 42 20.4 21.8 0.7 0 0 0 0.3 0 36
    43/46
    SoyateIMF 4 0 Sefacotton 0.72 22.47 3.64 5.05 27.67 0.58 2.72 35.36 1.06 0.23 0 94 SefaSoyateLP426 0 10.22 12.03 36.89 38.21 1.39 0 0.5 0 0.4 0.31 65
    Table IV
    The following are examples of personal care compositions that comprise a cleaning phase and a lipid phase. The compositions can be prepared by mixing the vanilla surfactant base (VB surfactant) in Table I with the following lipids through SpeedMixing for 2 mins. at 2,000 rpm.
    Vanilla Surfactant Base Lipid Phase IV value ofSepphosis Example 1 95% ofVB surfactant 5% Sefose 1618UB6 121 Example 2 95% ofVB surfactant 5% Sefose 1618U 128 Example 3 95% ofVB surfactant 5% Sepphose 1618S 82 Example 4 95% ofVB surfactant 5% Sepphose 1618SB6 83 Comparative example A: 95% ofVB surfactant 5% Sepphose 1618H 2 Example 5 95% ofVB surfactant 5% Sefa SoyateIMF 4 0 36 Example 6 95% ofVB surfactant 5% Sefose algodoate 94 Example 7 95% ofVB surfactant 5% Sefose LP426 65 Comparative example B: 95% ofVB surfactant 5% soybean oil - Example 8 95% ofVB surfactant 5% blend ofSepphosis(Sepphose 1618H +Sepphose 1618U in 4: 1 ratio) 27
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    Example 9 95% ofVB surfactant 5% blend ofSepphosis(Sepphose 1618H +Sepeose 1618U in 3: 2 ratio) 52 Example 10 95% ofVB surfactant 5% blend ofSepphosis(Sepphose 1618H +Sephose 1618U in 2: 3 ratio) 77 Example 11 95% ofVB surfactant 5% blend ofSepphosis(Sepphose 1618H +Sepphose 1618U at 1: 4 ratio) 103
    Table V
    initial Young's modulus (Pa) Young Final modulus (Pa) Volume offoam(ml) frictional force (Newton (gf)) Example 1 151 22 1,700 8.1 (829) Example 2 28 13 1,750 8.7 (884) Example 3 28 9.4 1,750 8.3 (842) Example 4 173 41 2,250 7.8 (791) Examplecomparative A: 23 11 2,400 12.7 (1294) Example 5 42 13.5 2,100 7.8 (799) Example 6 24 9.2 2,200 9.1 (925) Example 7 28 10.3 1,500 7.5 (765) Examplecomparative B: 47 7.5 2,500 12.1 (1235) Example 8 24 9.2 2,200 9.1 (925) Example 9 28 10.3 1,500 7.5 (765) Example 10 26 10.8 2,000 8.8 (898) Example 11 23 12.9 2,250 9.2 (938)
    As shown above, Table V illustrates the Young's modulus, Young's Final modulus, foaming volume and frictional force of the Examples shown in Table IV. Personal care compositions containing
    45/46 Sefoses materials with high IV values had low frictional force, while the Comparative Examples containing Sefose with low IV value and bean oil soja had high frictional force. Low frictional force is preferred, as it reflects the smooth / smooth feeling on the skin.
    The dimensions and values presented in the present invention should not be understood as being strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions is intended to mean both the mentioned value and a range of functionally equivalent values around that value. For example, a dimension shown as 40 mm is intended to mean about 40 mm.
    It should be understood that each maximum numerical limit mentioned in this specification includes each of the lower numerical limits, as if such lower numerical limits were expressly registered in this document. Each minimum numerical limit mentioned in this specification includes each of the upper numerical limits, as if such upper numerical limits were expressly registered in this document. Each number range mentioned in this specification includes each more restricted number range that is within that broader number range, as if such more restricted number ranges were expressly recorded in this document.
    All the documents mentioned in the Detailed Description are, in their relevant part, incorporated herein, for reference. The citation of any document should not be
    46/46 interpreted as admitting that it represents prior art with respect to the present invention. If any meaning or definition of a term in this written document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to the term in this written document will take precedence.
    Although particular examples of the present invention have been illustrated and described, it should be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended to cover in the appended claims all such changes and modifications that fall within the scope of the present invention.
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    权利要求:
    Claims (14)
    [1]
    1. Personal care composition, comprising a structured cleaning phase and a benefit phase, characterized in that said structured cleaning phase comprises:
    a) an aqueous surfactant phase comprising from 5% to 20%, by weight of said composition for personal care, of an anionic surfactant, in which said anionic surfactant comprises a branched anionic surfactant selected from the group consisting of tridecet (n) sodium sulfate, where n is between 0.5 and 2.7, sodium tridecet sulfate, sodium tridecyl sulfate, C 12-13 alkyl sulfate, C 12-15 alkyl sodium sulfate, C 11-15 alkyl sodium sulphate, alkyl C 12-1 g sodium sulfate, C 10-16 alkyl sodium sulfate, sodium sulfate paret 12-13 C, paretn sodium sulfate C 12-13, C 12- paretn sodium sulfate 14 and combinations thereof; b) 2% to 10%, by weight of said personal care composition, of at least one of the following: an amphoteric surfactant, in which said amphoteric surfactant is selected from the group consisting of 3-dodecyl amino propionate sodium, 3 -dodecyl amino propane sodium sulfonate, sodium lauryl sarcosinate, N-alkyl taurines, higher N-alkyl aspartic acids, lauro anfoacetate, sodium cocoanfoacetate, disodium lauroanfoacetate, disodium cocodianfoacetate, or mixtures thereof; and a zwitterionic surfactant, in which the said zwitterionic surfactant is selected from the group consisting of betaines and cocoamidopropyl betaine;
    c) a structuring system comprising from 0.5% to 5%, by weight of said composition for personal care, of an electrolyte, in which said electrolyte comprises an anion selected from the group consisting of phosphate, chloride,
    Petition 870180011964, of 02/14/2018, p. 5/13
    [2]
    2/4 sulfate, citrate and mixtures thereof; and a cation selected from the group consisting of sodium, ammonium, potassium, magnesium and mixtures thereof; and the said benefit phase comprises:
    a) from 0.1% to 50%, by weight, of said personal care composition, of a benefit agent comprising a sucrose polyester, the sucrose polyester being selected from the group consisting of Sefose 1618U B6, Sefose 1618U, Sefose 1618S, Sefose 1618S B6, Sefa Soyate IMF 40, Sefa algodoate, Sefa Soyate LP426, and combinations thereof; and wherein said sucrose polyester has an iodine index of 25 to 130.
    Personal care composition according to claim 1, characterized in that the sucrose polyester comprises an esterification (IBAR) of 5 to 8.
    [3]
    Personal care composition according to claim 2, characterized in that the sucrose polyester comprises an esterification (IBAR) equal to 6.
    [4]
    Personal care composition according to claims 1-3, characterized in that the sucrose polyester comprises a chain length of C 22 to C 20 .
    [5]
    Personal care composition according to claim 1, characterized in that the benefit agent comprises a mixture or mixture of sucrose polyesters.
    [6]
    6. Personal care composition according to claim 1, characterized in that said structuring system further comprises from 0.05% to 0.5%, by weight, of said associative polymer composition for personal care.
    [7]
    7. Personal care composition according to claim 1, characterized in that said system
    Petition 870180011964, of 02/14/2018, p. 6/13
    3/4 structuring additionally comprise a non-ionic emulsifier that has an HLB of 3.4 to 13.0.
    [8]
    8. Personal care composition according to claim 7, characterized in that said nonionic emulsifier is selected from the group consisting of glyceryl monohydroxy, Isoestearet-2, tridecet-2, tridecet3, hydroxystearic acid, propylene glycol stearate , PEG-2 stearate, sorbitan monostearate, glyceryl laurate, lauret-2, cocamide monoethanolamine, lauramide monoethanolamine and mixtures thereof.
    [9]
    9. Personal care composition according to claim 1, characterized in that said benefit phase is anhydrous.
    [10]
    10. Personal care composition according to claim 1, characterized in that said benefit phase is free of surfactant.
    [11]
    11. Composition for personal care, characterized by comprising:
    a) a structured aqueous phase comprising from 5% to 20%, by weight, of the personal care composition, a first surfactant; an amphoteric surfactant, zwitterionic surfactant or a combination thereof; and a structuring system comprising (i) a non-ionic emulsifier, (ii) an associative polymer and an electrolyte; and
    b) a benefit phase comprising from 0.1% to 50%, by weight, of the personal care composition, of a benefit agent comprising a sucrose polyester with an iodine index of 10 to 140.
    [12]
    12. Personal care composition according to claim 11, characterized in that the iodine index is 25 to 130.
    Petition 870180011964, of 02/14/2018, p. 7/13
    4/4
    [13]
    13. Personal care composition according to claim 11, characterized in that the sucrose polyester comprises Sefose 1618U B6, Sefose 1618U, Sefose 1618S, Sefose 1618S B6, Sefa Soyate IMF 40, Sefa algodoato, Sefa Soyate LP426, or a combination of the same.
    [14]
    Composition for personal care according to claim 11, characterized in that the first surfactant comprises STnS, where n is between 0.5 and 2.7.
    Petition 870180011964, of 02/14/2018, p. 8/13
    1/11
    11/11
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    同族专利:
    公开号 | 公开日
    CN104024392A|2014-09-03|
    EP2718413B1|2017-11-15|
    WO2012170784A3|2014-09-25|
    MX339059B|2016-05-06|
    EP2718413A2|2014-04-16|
    MX2013014595A|2014-01-24|
    CA2837105C|2016-08-23|
    BR112013031714A2|2016-09-06|
    WO2012170784A2|2012-12-13|
    US20120316095A1|2012-12-13|
    CA2837105A1|2012-12-13|
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    法律状态:
    2017-11-07| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: A61K 8/60 , A61Q 19/10 Ipc: A61K 8/03 (2006.01), A61K 8/60 (2006.01), A61Q 19/ Ipc: A61K 8/03 (2006.01), A61K 8/60 (2006.01), A61Q 19/ |
    2017-11-14| B07A| Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]|
    2018-04-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2018-05-08| B16A| Patent or certificate of addition of invention granted|
    优先权:
    申请号 | 申请日 | 专利标题
    US201161495543P| true| 2011-06-10|2011-06-10|
    PCT/US2012/041499|WO2012170784A2|2011-06-10|2012-06-08|Personal care compositions|
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