• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a moisture absorbing composition comprising at least one desiccant, at least one sequestering agent and optionally at least one superabsorbent agent. The present invention also relates to a moisture absorbing device comprising said composition. In addition, the present invention relates to the use of at least one sequestering agent in a moisture-absorbing composition, in order to prevent any leakage of the liquid resulting from the absorption of the moisture of the air by the absorbent composition.
    公开号:FR3037258A1
    申请号:FR1555446
    申请日:2015-06-15
    公开日:2016-12-16
    发明作者:Valerie Venet；Jean-Louis Espeit；Martine Marechet
    申请人:Eurotab SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an absorbent moisture composition, in particular for purifying air, and a moisture absorbing device comprising said composition. The present invention also relates to the use of at least one sequestering agent in a moisture-absorbing composition, in order to prevent any leakage of brine resulting from the absorption of the moisture of the air by the absorbent composition .
    [0002] Sanitation of a dwelling, such as a house, a caravan, a boat, a transport crate, a closet or a linen closet, is becoming increasingly important as consumers seek more and more a feeling of well-being with the products they use daily. The practical and easy to use aspect is one of the main qualities that these products must fulfill.
    [0003] Absorbent moisture compositions are already known in the prior art. Patent EP1426105 relates to a moisture-absorbing material intended to be used in a moisture-absorbing device, this material comprising a hygroscopic agent capable of absorbing moisture from the air and transforming it into brine, characterized in that it is in the form of a compact block comprising at least two layers. The hygroscopic agent used contains at least 50% of a salt of CaCl 2 or a salt of MgCl 2 or a mixture of a salt of CaCl 2 and MgCl 2. International application W02012 / 066150 describes an equipment consisting of a holding device for holding a cylindrical tablet containing a desiccant, preferably calcium chloride capable of absorbing moisture from the air and transforming it into brine and a collection container disposed below the device for holding the tablet. The tablet has an annular cylindrical shape and has a specific surface that increases the air contact surface and thus improve the moisture absorption efficiency. The equipment contains a ventilation system which allows a better air circulation and thus to improve the efficiency of absorption. The drying agents present in the compositions in the form of hygroscopic salts, in particular CaCl 2, capture the moisture of the air and return it to water heavily loaded with Ca 2 + and Cl ion, called brine. Absorbent moisture compositions are generally in the form of granules, powder or solid tablet 3037258 2 which, as the moisture of the air is absorbed, becomes a liquid brine. There is therefore a significant risk of leakage of the brine thus formed. In addition, the elimination of the large amount of the liquid thus formed involves the difficult transport of a tray or a pocket, with a significant risk of spilling of the brine.
    [0004] There is therefore a great need for an absorbent moisture composition that avoids the formation of liquid brine or allows it to be trapped to prevent leakage or spillage. International application W003 / 063918 discloses a method for absorbing moisture and odors present in confined spaces such as cabinet drawers, shoes. The product is in the form of a moisture permeable sachet containing a dehumidification compound in particulate form, an odor neutralizing agent in particulate form and a filler selected from starches, starch derivatives, celluloses cellulose derivatives which act as a thickening or gelling agent for the water present inside the sachet. The proposed product is in the form of a sachet. This product is intended for confined spaces only because of the low moisture absorption efficiency of the product. The latter could not be used to dehumidify the rooms of a house. The patent FR2879109 describes an absorbent moisture composition, characterized in that it contains, by weight relative to the total weight of the composition: 20 - 70 to 95% of a hygroscopic substance - 3 to 20% of an agent polysaccharide thickener - 2 to 10% of a super-absorbent water agent The described moisture absorbing composition makes it possible to gel the brine. The composition of the invention can be packaged in trays to absorb liquids that are exuded by foodstuffs, dressings, etc. The composition can also be packaged in pouches to be introduced into shoes to absorb perspiration. The invention does not relate to tablets. This product is intended for confined spaces only because of the low moisture absorption efficiency of the product. This product could not be used to dehumidify rooms 30 of a home. The international application WO2006 / 052748 describes a device comprising a humectant composition in solid form for controlling the relative humidity in a given environment. The composition can be tableted, packaged in a sachet or in a moisture permeable package. The sachet may also be micro-perforated. The humectant composition is composed of a humectant salt, water and a filler that may be a cellulose, clay, silica gel, carbohydrate, hydrophilic polymer, gelling agent based on protein, gum, hydrocolloid to stabilize and solidify the humectant salts present in the invention in the form of a saturated solution in order to avoid any risk of leakage or spillage of the solution. The composition may also contain antimicrobial agents, activated charcoal, volatile organic compounds. EP2471595 discloses a moisture absorbing composition comprising a "carbohydrate nanosponge" and a hygroscopic agent such as calcium chloride. By carbohydrate nanosponge is meant a highly branched porous polymer obtained by polymerization of a carbohydrate selected from suitable dextrins, celluloses, starches and bonding agents. The product can be in the form of a powder, granules, micro and nano particles, a tablet, a gel, a paste or a colloid. The product avoids the risk of leaking or spilling brine and limiting corrosion of elements / goods in the vicinity of the moisture absorbing product. Patent Application FR2970325 discloses an air dehumidification kit comprising an air dehumidifying device and an air moisture absorbing composition comprising at least one solid monolithic fraction of predetermined dimensions. The device comprising a support of the absorbent composition comprising a plurality of housings. Each housing is arranged to receive a single solid monolithic fraction of the absorbent composition. By solid monolithic fraction is meant a fraction which is neither liquid nor gaseous nor pulverulent.
    [0005] This fraction may be a gel or an indeformable solid, preferably the composition is in the form of solid monolithic fractions. The composition of the product comprises 7090% by weight of a hygroscopic salt and 10-30% by weight of a superabsorbent. The kit makes it possible to use several solid monolithic fractions of the absorbent composition. The contact surface between the air and all the fractions is thus increased with respect to a single monolithic block. These monolithic fractions are easier to handle than pulverulent products. In addition, the proposed invention makes it possible to adapt the device according to the humidity desired by the user. The present invention relates to a moisture absorbing composition 30 for proposing a solution to the various disadvantages encountered in the prior art. In particular, the present invention makes it possible to effectively absorb the humidity of the rooms of dwellings and interiors, while avoiding any risk of spilling or leaking of the brine resulting from the absorption of the moisture of the air by the absorbent composition . The present invention also makes it possible to obtain a moisture absorbing composition which can easily be discharged into the conventional network of solid household waste without risk of leakage. The present invention avoids any formation of liquid brine, the brine is instantly absorbed over time.
    [0006] The inventors have surprisingly found that the addition of at least one sequestering agent in a moisture absorbing composition comprising a desiccant effectively absorbs the liquid brine as it is formed. The brine formed is instantly absorbed, which avoids any risk of spilling or leakage and allows easy evacuation of the absorbent composition in the conventional network of solid household waste. Thus, the present invention mainly relates to a moisture absorbing composition comprising at least one desiccant and at least one sequestering agent.
    [0007] For the purposes of the present invention, the term "desiccant" means a hygroscopic substance capable of absorbing moisture from the air and transforming it into brine. The drying agent is preferably selected from the salt of CaCl 2, the salt of MgCl 2, bentonite, sodium sulphate, sodium carbonate, silica gel and mixtures thereof, preferably the desiccant is salt. of CaC12.
    [0008] The amount of desiccant present in the composition according to the invention for absorbing moisture from the air and transforming it into brine is from 1 to 99%, advantageously 10 to 90%, more preferably 50% by weight. at 90% by weight, relative to the total weight of the composition.
    [0009] For the purposes of the present invention, the term "sequestering agent" is intended to mean a compound which forms chemical groups with metal ions. More particularly, a sequestering agent is a compound making it possible to sequester metal ions, in particular calcium or chloride ions, from an aqueous solution. In the context of the present invention, the sequestering agent is in particular chosen from zeolites, phyllosilicates, alkali metal carbonates, sodium silicates, polycarboxylate polymers such as polyacrylates and acrylic / maleic copolymers. acrylic phosphonates, monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di- and tri-succinates, carboxymethyloxysuccinates, amino polycarboxylic compounds such as methylglycinediacetate acid carboxymethyloxymalonates (MGDA) , glutamic diacetic acid (GLDA), imminodisuccinate (IDS), ethylenediamine disuccinate (EDDS), dipicolinates, nitrilotriacetates, hydroxyethyliminodi acetates, ethylenediamine tetraacetic acid (EDTA), nitrilotriacetic acid (NTA) orthophosphates, meta-phosphates, pyrophosphates, alkali metal polyphosphates such as tripl sodium olyphosphate, and mixtures thereof. The sequestering agent is preferably chosen from sodium citrate, ethylene-diamine tetraacetic acid (EDTA) and methylglycine-diacetic acid (MGDA). The minimum amount of effectiveness of the at least one sequestering agent can be determined by those skilled in the art, with the aid of his general knowledge, depending on the nature of the sequestering agent used. The term "minimum amount of effectiveness" means the minimum amount necessary for the liquid brine formed over time to be absorbed instantaneously. In particular, the moisture absorbing composition according to the present invention comprises 1 to 99%, preferably 5 to 55%, more preferably 5 to 30% of at least one sequestering agent, by weight based on the total weight of the composition. According to a particular embodiment, the composition further comprises a superabsorbent agent.
    [0010] Synthetic or natural superabsorbents have the ability to absorb a significant amount of water. Therefore, there exist in the prior art moisture absorbing compositions comprising a superabsorbent agent for absorbing the brine during its formation. The inventors have surprisingly discovered that the addition of sequestering agent makes it possible to improve the absorption capacity of the superabsorbents. Even more surprisingly, the inventors have discovered that the mixture of at least one superabsorbent agent and at least one sequestering agent in a moisture-absorbing composition comprising a desiccant makes it possible to increase the amount of agent drying.
    [0011] In fact, it has been found that by using the sequestering agent / superabsorbent agent combination it is possible to obtain compositions which absorb the liquid brine even more efficiently. In this case, the mass ratio of the desiccant relative to the desiccant / sequestering agent / superabsorbent agent mixture may be greater than the maximum mass ratio (drying agent): (desiccating agent + one or the other sequestering agent or superabsorbent agent) allowing efficient absorption of the liquid brine formed over time. The minimum amount of effectiveness of the sequestering agent / superabsorbent agent mixture is then less than the minimum amount of effectiveness of the superabsorbent agent alone or the sequestering agent alone. Such an effect makes it possible, for a tablet of the same weight, to reduce the amount of sequestering agent and superabsorbent agent and thus to increase the amount of desiccant in the moisture absorbing composition according to the invention. to improve its ability to absorb moisture. This has been demonstrated in the examples, particularly in Example 2, in which a moisture absorbent pad was obtained allowing the brine to be absorbed instantaneously over time, comprising 21.4% by weight by weight. total of the tablet, a sequestering agent and superabsorbent agent mixture (test 5), instead of 35.3% by weight relative to the total weight of the tablet, superabsorbent alone (test 3) or 31.2% by weight relative to the total weight of the tablet, sequestering agent alone (test 2).
    [0012] Without wishing to be bound to any theory, the inventors are of the opinion that this observed synergy can be explained by the fact that the absorption capacity of the superabsorbents is greatly diminished by the content of Ca 2+ and cr ions in particular. high brine. The addition of sequestering agents then makes it possible to trap the Ca 2+ and CL ions, and thus to improve the absorption capacity of the superabsorbents. The minimum amount of effectiveness of the sequestering agent / superabsorbent agent mixture can be determined by one skilled in the art, using his general knowledge, depending on the nature of the sequestering agent and the super agent. -absorbent used. In general, the minimum amount of effectiveness of the sequestering agent / superabsorbent agent mixture is at least 2%, preferably 10%, more preferably at least 20%, more preferably at least 30%. less than the minimum amount of effectiveness of the sequestering agent alone or the superabsorbent alone. In particular, the moisture absorbing composition according to the present invention comprises 0 to 95%, preferably 3 to 50%, more preferably 3 to 30% of at least one superabsorbent, by weight based on total weight. of the composition. More particularly, when at least one superabsorbent agent is added to the composition according to the invention, the amount of the mixture of the at least one sequestering agent and the at least one superabsorbent agent in the composition is comprised between 1 and 99%, advantageously between 5 and 60%, more advantageously between 8 and 40%, by weight relative to the total weight of the composition. Advantageously, the absorbent moisture composition according to the present invention comprises, by weight relative to the total weight of the composition: 1 to 99%, advantageously 5 to 55%, more preferably 5 to 30% of at least one agent sequestering; and 0 to 95%, preferably 3 to 50%, more preferably 3 to 30% of at least one superabsorbent agent. For the purposes of the present invention, the term "superabsorbent agent" is intended to mean a polymer capable of absorbing aqueous solutions, such as brine. Among the synthetic superabsorbers which may be used, mention may be made of superabsorbents comprising a monomer chosen from acrylamide and its derivatives, alone or as mixtures, polyacrylamides and any other synthetic superabsorbent which makes it possible to absorb the solutions. aqueous. More particularly, Aquasorb 3005KMe sold by the company SNF is a crosslinked copolymer of acrylamide and potassium acrylate. Among the natural super-absorbents that can be used include celluloses, cellulose derivatives, starches, starch derivatives, pectin, gelatin, gums such as guar gum, agar agar, alginates and any other agent for absorbing solutions including aqueous solutions. The starch derivative marketed by the company JRS under the name Vivastar CS 302 SV®, which is a sodium carboxymethyl starch, is more particularly mentioned. In the context of the present invention, the superabsorbent agent is in particular chosen from celluloses, cellulose derivatives, starches, starch derivatives, pectin, gelatin, gums such as guar gum. , agar agar, alginates, sodium polyacrylates, polyacrylate / polyacrylamide copolymers, polyacrylamide copolymers, poly (ethylene-maleic anhydride) copolymers, polyvinyl alcohol copolymers, crosslinked polyethylene oxide, (meth) acrylamides, N-alkyl (meth) acrylamides, N, N-dialkyl (meth) acrylamides, N-hydroxyalkyl (meth) acrylamides, N-hydroxyethyl (meth) acrylamides, N, Ndihydroxyalkyl (meth) acrylamides and vinyl lactams. Preferably, the superabsorbent agent is in particular chosen from celluloses, cellulose derivatives, starches, starch derivatives and polyacrylate / polyacrylamide copolymers. According to a particular embodiment of the invention, the superabsorbent agent could be replaced by any compound which makes it possible to avoid the formation of a liquid, for example by a gelling agent, a thickening agent or an absorbing agent. According to a particular embodiment of the present invention, the moisture-absorbing composition according to the present invention comprises, by weight relative to the total weight of the composition: from 20 to 99%, advantageously from 10 to 90%, and more advantageously from 50 to 100% by weight. 90% of at least one desiccant; 1 to 99%, advantageously 5 to 55%, more preferably 5 to 30% of at least one sequestering agent; and 0 to 95%, preferably 3 to 50%, more preferably 3 to 30% of at least one superabsorbent agent. The absorbent moisture composition according to the invention may also contain additional additives such as perfumes, dyes, antiallergics, silica-type mineral fillers, calcium carbonate, lubricants such as calcium stearate. , magnesium stearate or their mixture. The absorbent moisture composition according to the invention may also comprise a volatile active substance or a gel comprising a volatile active substance. Said volatile active substance being in particular chosen from perfuming, deodorizing, bactericidal, insecticidal, repellent substances of animals or insects, essential oils and their mixtures. In the context of the present invention, the moisture absorbing composition may be in the form of granules, powder or a solid tablet. Preferably, the moisture absorbing composition is in the form of a solid tablet. For the purposes of the present invention, the term "solid tablet" is intended to mean a compacted composition consisting of a set of particles compactly grouped in such a way that they can be handled without disintegrating.
    [0013] The absorbent moisture pad according to the invention may consist of a layer or a stack of several layers which are superimposed on each other, thus forming a uniform and compact block. The layers may be of similar or different compositions, or even similar or different colors. The tablet may be cylindrical in shape with a section of any shape such as a circular, oval, octagonal, or parallelepipedal shape. When the section of the compacted composition is parallelepipedic, typically square or rectangular, the corners of the compacted composition can be curved so that they are less brittle. Each layer has the same section so that the stack they form together is uniform. The compacted composition may also have any other geometrical shape (star, diamond, etc.). Said tablet may also include a wear indicator which will be released when the size of the tablet has sufficiently decreased. The detergent tablet has a mass of between 1 and 5000 grams, advantageously between 1 and 500 grams and in particular between 100 and 500 grams. The tablet has a mechanical strength of between 50 and 5000 Newtons, preferably between 50 and 3000 Newtons, more preferably between 50 and 1500 Newtons. The absorbent moisture composition according to the invention, compacted in tablet form, can in particular be manufactured according to the following preparation method: a) mixing the various components, including the at least one desiccant, the at least one a sequestering agent and optionally the at least one superabsorbent agent, to form the compositions corresponding to each of the layers; b) Pre-compacting the composition, in particular by direct compression, for example on rotary presses; c) optionally, introduce on the first layer the composition of a second layer and then pre-compact as for the first layer; d) possibly repeat step c) as many times as necessary layers; and e) compacting all the layers, in particular by direct compression, for example on rotary presses, to obtain a compacted composition. The compacted composition thus obtained is resistant to shocks. The pre-compression forces used are in particular between 5 and 200 kN, advantageously between 5 and 100 kN and more advantageously between 10 and 80 kN. The compression force used is in particular between 20 and 1000 kN, advantageously between 40 and 600 kN and more advantageously between 150 and 400 kN.
    [0014] The present invention also relates to a moisture absorbing device characterized in that it comprises a moisture absorbing composition as defined above, as well as the use of such a device for the dehumidification of a room. The device according to the invention makes it possible, in particular, to absorb the humidity of the air in a habitable space, in particular a part of a dwelling, while avoiding the spilling or leakage of the brine formed over time. The device thus obtained is therefore easy to use and practical, the absorbent moisture composition can easily be removed in the conventional network of solid household waste without the need to transport a liquid solution. The present invention also relates to the use of at least one sequestering agent in a moisture absorbing composition comprising at least one desiccant and optionally at least one superabsorbent agent, in order to prevent leakage of the brine resulting from the absorption of moisture from the air by the absorbent composition.
    [0015] Examples Example 1: Preparation of a moisture absorbing composition according to the invention comprising a mixture of CaCl 2 and sequestering agent. The following compositions are prepared by mixing the various ingredients: Table 1: Composition of the prepared mixtures Reference 1 2% CaCl 2 100 57.9 68.8% dihydrate 0% citrate 42.1 0.0% sodium EDTA 0 0.0 31 , 2 TOTAL 100 100 100 Mass 11 19 16 tablet (g) The sequestering agents tested are: sodium citrate and EDTA.
    [0016] The mixtures obtained are then compressed using a 32 mm diameter cylindrical tooling on a hydraulic press at 62 MPa. The shelves are placed in small plastic containers 40mm in diameter. The different tablets and containers are then placed in a controlled atmosphere chamber whose temperature is set at 32.7 ° C. and the relative humidity at 41.3% for about twenty days, which corresponds to about 2-3 months under normal conditions. (at room temperature). Over time, we note if we observe the presence of liquid brine. Table 2: results obtained Reference 1 2 Presence of liquid brine in the container (0 / N) 0 N N 10 0 = presence of liquid brine; N = absence of liquid brine According to the results obtained, it is noted that the compositions composed of CaCl 2 and of a sequestering agent make it possible to absorb the brine which forms over time. The sequestering agent that gives the best results in brine absorption is EDTA.
    [0017] EXAMPLE 2 Preparation of a moisture absorbing composition according to the invention comprising a mixture of CaCl 2, a sequestering agent and a superabsorbent agent (Vivastar CS 302 SVO) The following compositions are prepared by mixing Table 3: Composition of prepared mixtures Reference 3 4 5 6% CaCl 2 dihydrate 100 64.7 71.0 78.6 66.7% citrate 0 0.0 12.9 0.0 0.0 sodium 0/0 0 0.0 0.0 0.0 9.1 Sodium tripolyphosphate% EDTA 0 0.0 0.0 7.1 0.0% Vivastar CS 0 35.3 16.1 14.3 24.2 302 SVO TOTAL The sequestering agents tested are: sodium citrate, sodium tripolyphosphate and EDTA. The superabsorbent tested is: Vivastar CS 302 SV® (sodium carboxymethyl starch). The mixtures obtained are then compressed using a 32 mm diameter cylindrical tooling on a 62MPa hydraulic press. The shelves are placed in small plastic containers 40 mm in diameter. The various tablets and containers are then placed in a controlled atmosphere chamber whose temperature is set at 32.7 ° C. and the relative humidity at 41.3% for about twenty days, which corresponds to about 2-3 months under normal conditions. (at room temperature). Over time, we note if we observe the presence of liquid brine.
    [0018] Table 4: Results obtained Reference 3 4 5 6 Presence of liquid brine in the vessel 0 N N N N (0 / N) 0 = presence of liquid brine; N = absence of liquid brine According to the results obtained, it is noted that the use of sequestering agent makes it possible to reduce the amount of superabsorbent (Vivastar CS 302 SV®) necessary for the absorption of the liquid brine and of increase the amount of CaCl 2 in the composition. The sequestrant that gives the best results with Vivastar CS 302 SV is EDTA. Example 3: Preparation of a moisture absorbing composition according to the invention comprising a mixture of CaCl 2, a sequestering agent and a superabsorbent agent (Aquasorb 3005K1V10) The following compositions are prepared by mixing the various ingredients: 3037258 12 Table 5: Composition of the prepared mixtures Reference 7 8% CaC12 dihydrate 100 61.1% citrate 0 0 27.8 sodium% Aquasorb 0 80 11.1 3oo5Kme TOTAL 100 100 100 Tablet weight (g) 11 25 18 The sequestering agent tested is: sodium citrate.
    [0019] The super absorbent tested is: Aquasorb 3005Kme (crosslinked copolymer of acrylamide and potassium acrylate) The mixtures obtained are then compressed using a 32mm diameter cylindrical tooling on a 62MPa hydraulic press. The shelves are placed in small plastic containers 40mm in diameter.
    [0020] The different tablets and containers are then placed in a controlled atmosphere chamber whose temperature is fixed at 32.7 ° C. and the relative humidity at 41.3% for about twenty days, which corresponds to about 2-3 months under normal conditions. (at room temperature). Over time, we note if we observe the presence of liquid brine.
    [0021] Table 6: Results obtained Reference 7 8 Presence of brine 0 N N liquid in the container (0 / N) 0 = presence of liquid brine; N = absence of liquid brine According to the results obtained, it is noted that the use of sodium citrate makes it possible to reduce the amount of superabsorbent (Aquasorb 3005KM) necessary for the absorption of the liquid brine and to increase the amount of CaCl 2 in the composition. In all of the above description and unless otherwise indicated, the percentages are by weight. 25
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Absorbent moisture composition comprising at least one desiccant and at least one sequestering agent.
    [0002]
    The composition of claim 1, further comprising a superabsorbent agent.
    [0003]
    The composition of claim 1 or 2, wherein the desiccant is selected from the salt of CaCl 2, the salt of MgCl 2, bentonite, sodium sulfate, sodium carbonate, silica gel and mixtures thereof. preferably the desiccant is the CaCl 2 salt.
    [0004]
    4. Composition according to any one of claims 1 to 3, wherein the sequestering agent is selected from zeolites, phyllosilicates, alkali metal carbonates, sodium silicates, polycarboxylate polymers such as polyacrylates, acrylic / maleic copolymers, acrylic phosphonates, monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di- and tri-succinates, carboxymethyloxysuccinates, amino polycarboxylic compounds such as acid carboxymethyloxymalonates methylglycinediacetate (MGDA), glutamic diacetic acid (GLDA), imminodisuccinate (ID S), ethylenediamine disuccinate (EDDS), dipicolinates, nitrilotriacetates, hydroxyethyliminodi acetates, ethylene diamine tetraacetic acid (EDTA), nitrilotriacetic acid (NTA), orthophosphates, meta-phosphates, pyrophosphates, alkali metal polyphosphates such as sodium triplolyphosphate, and mixtures thereof, preferably sodium citrate, ethylene-diamine-tetraacetic acid (EDTA) and methylglycine-diacetic acid (MGDA).
    [0005]
    5. Composition according to any one of Claims 2 to 4, in which the superabsorbent agent is chosen from celluloses, cellulose derivatives, starches, starch derivatives, pectin, gelatin and gums. such as guar gum, agar agar, alginates, sodium polyacrylates, polyacrylate / polyacrylamide copolymers, polyacrylamide copolymers, anhydrous poly (ethylene-maleic) copolymers, polyvinyl alcohol copolymers, crosslinked polyethylene oxide , (meth) acrylamides, N-alkyl (meth) acrylamides, N, N-dialkyl (meth) acrylamides, N-hydroxyalkyl (meth) acrylamides, N-hydroxyethyl (meth) acrylamides, N, N-dihydroxyalkyls ( meth) acrylamides and vinyl lactams. 3037258 14
    [0006]
    6. 5
    [0007]
    7. 10
    [0008]
    8. 15
    [0009]
    9. 20
    [0010]
    10. 25
    [0011]
    11. 30
    [0012]
    12. 35
    [0013]
    13. Composition according to any one of claims 1 to 5, comprising 1 to 99%, advantageously 5 to 55%, more preferably 5 to 30% of at least one sequestering agent, by weight relative to the total weight of the composition . Composition according to any one of claims 1 to 6, comprising 0 to 95%, advantageously 3 to 50%, more preferably 3 to 30% of at least one superabsorbent agent, by weight relative to the total weight of the composition . Composition according to any one of claims 1 to 7, comprising by weight relative to the total weight of the composition: 1 to 99%, advantageously 10 to 90%, more preferably 50 to 90% of at least one desiccant; 1 to 99%, advantageously 5 to 55%, more preferably 5 to 30% of at least one sequestering agent; and 0 to 95%, preferably 3 to 50%, more preferably 3 to 30% of at least one superabsorbent agent. A composition according to any one of claims 1 to 8, further comprising at least one additional additive such as a perfume, a dye, an antiallergic, a silica mineral filler, calcium carbonate, a lubricant or a mixture thereof. Composition according to any one of Claims 1 to 9, furthermore comprising at least one volatile active substance, chosen in particular from perfumes, deodorants, bactericides, insecticides, animal or insect repellents, essential oils and their mixtures. . Composition according to any one of Claims 1 to 10, characterized in that the said composition is in the form of a tablet, of granules or of powder, in particular in the form of a tablet. Absorbent device for dampness, characterized in that it comprises a moisture absorbing composition as defined in any one of claims 1 to 11. Use of a moisture absorbing device as defined in claim 12, for the dehumidification of a room. 3037258 15
    [0014]
    14. Use of at least one sequestering agent in a moisture-absorbing composition comprising at least one desiccant, in order to prevent leakage of the brine resulting from the absorption of moisture from the air by the composition absorbent.
    [0015]
    The use of claim 14, wherein said moisture absorbing composition also comprises at least one superabsorbent agent.
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    同族专利:
    公开号 | 公开日
    FR3037258B1|2020-10-16|
    EP3307420A1|2018-04-18|
    WO2016203152A1|2016-12-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    CN108083406A|2017-12-23|2018-05-29|淮北智淮科技有限公司|It is a kind of for reagent of sewage disposal and preparation method thereof|
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    法律状态:
    2016-06-13| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-16| PLSC| Search report ready|Effective date: 20161216 |
    2017-06-15| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-13| PLFP| Fee payment|Year of fee payment: 4 |
    2019-06-12| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-29| PLFP| Fee payment|Year of fee payment: 6 |
    2021-05-27| PLFP| Fee payment|Year of fee payment: 7 |
    2021-07-02| TP| Transmission of property|Owner name: EUROTAB OPERATIONS, FR Effective date: 20210527 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1555446A|FR3037258B1|2015-06-15|2015-06-15|MOISTURE ABSORBING COMPOSITION INCLUDING A SEQUESTRANT AGENT|FR1555446A| FR3037258B1|2015-06-15|2015-06-15|MOISTURE ABSORBING COMPOSITION INCLUDING A SEQUESTRANT AGENT|
    PCT/FR2016/051451| WO2016203152A1|2015-06-15|2016-06-15|Moisture-absorbing composition comprising a sequestering agent|
    EP16736524.6A| EP3307420A1|2015-06-15|2016-06-15|Moisture-absorbing composition comprising a sequestering agent|
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