• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    The invention relates to an aqueous adhesive composition comprising as main adhesive component a silicate ester obtained by reaction between a protein, a polysaccharide and an alkaline metasilicate, the protein comprising one or more of each of the following amino acids: serine, threonine and lysine and the polysaccharide having carboxylic groups (-COOH) and / or sulfonic groups (-SO3H), as well as its manufacture and use.
    公开号:FR3041356A1
    申请号:FR1558855
    申请日:2015-09-21
    公开日:2017-03-24
    发明作者:T'kint Michele Queneudec；Nicolas Montrelay；Koffi Justin Houessou
    申请人:Amiens Picardie Jules Verne, University of；Soc Picarde D'innovations Et De Dev Des Materiaux - Spidem；
    IPC主号:
    专利说明:

    The invention relates to an adhesive composition comprising a silicate ester, a process for preparing such an adhesive composition and the silicate ester as such.
    The adhesive composition of the invention will find a particular application, but not limited to, in the field of wood glues, especially for panels of plant material, especially lignocellulosic.
    By "panels of plant material" in the sense of the present invention is meant panels derived from lignocellulosic material, such as for example wood, linen or hemp. For example, they may be particle board (also called "chipboard"), fibreboard, slat board (OSB and WAFER BOARD) or plywood.
    Traditionally, glues used for the manufacture of plant material panels are formaldehyde resins such as, for example, urea-formaldehyde (UF), phenol-formaldehyde, ketone-formaldehyde, melamine-formaldehyde (MF) resins, melamine -urea-formaldehyde (MUF), nitroparaffin-formaldehyde, tannin-formaldehyde, or formaldehyde releasing products such as hexamethylene tetramine.
    Because of their often high content of free formaldehyde, the use of these resins poses considerable problems, including public health. Irritating to skin and mucous membranes, even for a low air level (1 or 2 parts per million, or ppm), unpleasant smell from 0.2 ppm, formaldehyde vapors are known to reach respiratory functions ( "Formalin asthma").
    The populations most affected by these problems are the personnel involved in the manufacture of panels of plant material and the babies and young children who are exposed to these vapors because of the use of this type of panels in furniture and furniture. interior design.
    There is therefore a real need for new formaldehyde-free adhesive compositions which are suitable for the manufacture of plant material panels.
    The patent application WO 2010/094856, of which the present applicants are also the owners, describes a method of manufacturing an agro material, in particular an agro-binder or agro-composite, in which a pectic compound derived from the plant, a gel, for example gelatin, and a solvent and the mixture is subjected to a heat treatment. This agro material can be used in the field of construction, transportation, packaging, electronic equipment or telecommunication technologies. However, it has been found that its performance is unsatisfactory for the manufacture of panels of plant material, including fibreboard.
    There is therefore still a need for new ecological and effective adhesive compositions that make it possible to overcome all or part of the disadvantages of the adhesives of the prior art identified above.
    An object of the invention is therefore to provide new adhesive compositions free of formaldehyde having good performance that can be easily manufactured and implemented.
    An object of the present invention is to provide adhesive compositions for achieving panel performance identical or superior to those obtained with UF, MUF or isocyanate adhesives.
    An object of the present invention is to provide adhesive compositions allowing production rates identical to those currently existing in continuous production.
    An object of the present invention is to provide adhesive compositions containing neither organic solvent nor other toxic components.
    It is thus the merit of the inventors to have developed an aqueous adhesive composition comprising as main adhesive component a silicate ester obtained by reaction between a protein, a polysaccharide and an alkaline metasilicate, the protein comprising one or more of each of the acids following amines: serine, threonine and lysine and the polysaccharide having carboxylic groups (-COOH) and / or sulfonic groups (-SO3H). One of the main advantages of the adhesive composition according to the invention is that it is free of formaldehyde. This composition therefore does not pose the known health problems of synthetic resins based on formaldehyde usually used for the manufacture of plant material panels, such as particle board.
    The protein may be a vegetable or animal protein. In a preferred embodiment, the protein is gelatin.
    The polysaccharide is chosen from polysaccharides comprising carboxylic groups (-COOH) and / or sulphonic groups (-SO3H). By way of example, mention may be made of galacturonates (such as pectins), alginates, xanthan, gellan, ulvans, carrageenans (iota, kappa, lambda), fucans and mixtures thereof. Preferably, the polysaccharide is chosen from pectins, alginates, xanthan, gellan, ulvans, carrageenans (iota, kappa, lambda), fucans and their mixtures, more preferably from pectins, ulvans and carrageenans. (iota, kappa, lambda) and mixtures thereof, more preferably still among pectins, ulvans, iota carrageenan and mixtures thereof. Carrageenans, fucans, alginates and ulvans are polysaccharides derived from red (carrageenan), brown (alginate, ulvan) and green (fucan) algae respectively. These polysaccharides can be used in pure form or in the form of a crushed stone or algae powder. Thus, in one variant of the invention, the polysaccharide is chosen from ground algae or powders, in particular from ground algae or powders of red algae, crushed brown algae or powders, ground matter or powders of green algae. and their mixtures.
    In one embodiment, the polysaccharide is a polysaccharide having carboxylic groups (-COOH). The silicate ester according to the invention of this embodiment is therefore a silicate ester polyamide. The polysaccharide comprising carboxylic groups may in particular be chosen from galacturonates (such as pectins), alginates, xanthan, gellan, ulvans and mixtures thereof. Preferably, the polysaccharide comprising carboxylic groups is chosen from galacturonates (such as pectins), alginates, xanthan, gellan and mixtures thereof, and more preferably it is chosen from pectins, alginates, xanthan and gellan. ulvans and mixtures thereof, more preferably among pectins, ulvans and mixtures thereof. Since alginates and ulvans are polysaccharides derived from brown algae, these polysaccharides can be used in pure form or in the form of a crushed stone or algae powder. Thus, in a variant of the invention, the polysaccharide comprising carboxylic groups is chosen from crushed brown algae or powders. In another variant of the invention, the polysaccharide comprising carboxylic groups is a pectin.
    In another embodiment, the polysaccharide is a polysaccharide having sulfonic groups (-SO3H). The silicate ester according to the invention of this embodiment is therefore a sulphonic ester of silicate. The polysaccharide comprising sulphonic groups may especially be chosen from ulvans, carrageenans (iota, kappa, lambda), fucans and mixtures thereof, preferably carrageenans (iota, kappa, lambda), fucans and mixtures thereof, more preferably still among the carrageenans (iota, kappa, lambda), in particular carrageenan iota. Since ulvans and fucans are polysaccharides derived from brown algae (ulvan) and green algae (fucans) respectively, these polysaccharides can be used in pure form or in the form of a groundnut or algae powder. Thus, in one variant of the invention, the polysaccharide comprising carboxylic groups is chosen from crushed brown algae or powders.
    The polysaccharide may also comprise carboxylic groups (-COOH) and sulphonic groups (-SO3H). An example of such a polysaccharide are ulvans. As previously stated, ulvans are polysaccharides derived from green algae. They can be used in pure form or in the form of ground or green algae powder. In an advantageous embodiment, a groundnut or a green algae powder will be used.
    The alkaline metasilicate may be chosen in particular from sodium and potassium metasilicates. The preferred metasilicate is sodium metasilicate.
    The adhesive composition according to the invention may also comprise various adjuvants. These adjuvants can first be distinguished into powdery adjuvants and liquid adjuvants.
    Powder adjuvants are those usually used in industry. These adjuvants include but are not limited to fluidifying agents such as proteins, and in particular hemoglobin, water-repellent agents, melamine and sebacic acid. It is also possible to add pigments or fillers commonly used in industry. These pigments or fillers are used as "filling" agents to preserve or reinforce, at low cost, the essential properties of the application. For these purposes, for example, kaolins, calcium carbonates, talc, titanium oxide, calcium or barium sulphates are used. These adjuvants are useful for, in particular, clogging pores and, such as kaolin for example, to prevent blistering (okoumé). It is still customary to add tannins, preferably condensed tannins such as, for example, tannins pine bark, pecan, mimosa and / or quebracho, especially modified.
    Among the liquid adjuvants that may be used include surfactants, glyoxal, glycerol triacetate and paraffin, especially in the form of emulsions.
    The adhesive composition according to the invention is an aqueous composition. Preferably, this adhesive composition is free of any organic solvent. In this embodiment, the adhesive composition of the invention contains water as the sole solvent.
    The reaction between a protein and a polysaccharide as defined above and an alkaline metasilicate gives rise to coupling reactions between the functional groups of the different starting materials. These reactions are done simultaneously.
    The inventors have demonstrated by Fourier Transform Infrared Spectroscopy (FTIR) that the first reaction that takes place is an esterification reaction between the alkaline metasilicate and the hydroxyl groups of the primary alcohols of the serine side chains of the protein. The hydroxyl groups may be on the same protein chain or on two, three or four different chains. Cross-linking of the protein is thus obtained via silicate groups.
    The second reaction taking place depends on the polysaccharide used. In the case of a polysaccharide comprising carboxylic groups, it is a condensation reaction between the carboxylic functions of the polysaccharide and the amine functions of the side chains of the lysine of the protein. Direct crosslinking is thus obtained between the protein and the polysaccharide via amide groups. In the case of a polysaccharide comprising sulphonic groups, it is a sulphonation reaction between the sulphonic functions of the polysaccharide and the hydroxyl functions of the secondary alcohols of the threonine side chains of the protein. Direct crosslinking is thus obtained between the protein and the polysaccharide via sulphonate groups. In the case of a polysaccharide comprising both carboxylic groups and sulphonic groups, crosslinking is obtained between the polysaccharide and the protein via amide groups and sulphonate groups. The invention therefore also relates to a silicate ester obtained by reaction between a protein, a polysaccharide and an alkaline metasilicate, the protein comprising one or more of each of the following amino acids: serine, threonine and lysine and the polysaccharide comprising carboxylic groups ( -COOH) and / or sulfonic groups (-SO3H). Advantageously, this silicate ester is the only adhesive component of the adhesive composition of the invention.
    As explained above, this silicate ester is characterized by a cross-linking of the peptide chains of the protein between them via silicate groups and a cross-linking of the peptide chains of the protein and the polysaccharide. The crosslinking between the peptide chains and the polysaccharide is carried out either via amide groups in the case of polysaccharides comprising carboxylic groups, or via sulphonate groups in the case of polysaccharides comprising sulphonic groups, or via both in the case of polysaccharides. comprising carboxylic groups and sulphonic groups. By way of example of a silicate ester polyamide obtained by the reaction between a protein, a polysaccharide comprising carboxylic groups and alkaline metasilicate, FIG. 1 schematically represents the structure of a repeating unit of a polyamide. silicate ester obtained by the reaction between a protein, pectin and alkaline metasilicate, in particular sodium metasilicate. By way of example of a silicate sulfonic ester obtained by the reaction between a protein, a polysaccharide having sulfonic groups and alkali metasilicate, Figure 2 schematically shows the structure of a repeating unit of an ester silicate sulfonic acid obtained by the reaction between a protein, carrageenan and alkaline metasilicate, especially sodium metasilicate. The invention also relates to a process for the preparation of an adhesive composition comprising a silicate ester as the main adhesive component as described above comprising at least the following steps: 1. preparing a dry mixture of a protein, of at least one alkaline metasilicate polysaccharide and optionally one or more adjuvants, the protein comprising one or more of each of the following amino acids: serine, threonine and lysine, the polysaccharide having carboxylic groups (-COOH) and / or sulphonic groups (-SO3H) and all the constituents of the mixture being in pulverulent form, 2. adding an aqueous solvent to the mixture prepared in the preceding step and mixing, 3. subjecting the mixture obtained in the preceding step to a heat treatment of to obtain a silicate ester.
    The starting materials and pulverulent adjuvants used in this process are those defined above with respect to the adhesive composition of the invention.
    The protein content of the dry mixture is advantageously from 50 to 70%, preferably from 55 to 68%, more preferably from 58 to 66%, these percentages being expressed by dry weight relative to the dry weight of protein, polysaccharide and alkaline metasilicate.
    The polysaccharide content of the dry mixture is advantageously from 5 to 20%, preferably from 7 to 9%, more preferably still from 9 to 18%, these percentages being expressed by dry weight relative to the dry weight of protein, polysaccharide and alkaline metasilicate.
    The alkaline metasilicate content of the dry mixture is advantageously from 15 to 30%, preferably from 20 to 27%, more preferably still from 22 to 25%, these percentages being expressed by dry weight relative to the dry weight of protein, polysaccharide. and alkaline metasilicate.
    The aqueous solvent used is preferably water. In a variant, one or more additives are also added at the time of addition of the aqueous solvent. This addition can be done either simultaneously or consecutively with the addition of water. When it is a simultaneous addition, the additive (s) may be mixed beforehand with the aqueous solvent or added separately. Examples of additives that can be used include surfactants, glyoxal, glycerol triacetate and paraffin, especially in the form of emulsions.
    All types of heat treatments known to those skilled in the art are suitable for performing the heat treatment step. The preferred heat treatment is a microwave heat treatment. Those skilled in the art will be able to adjust the treatment time and the power of the microwaves, in particular as a function of the quantity of the mixture to be treated. The heat treatment step is advantageously carried out at a temperature below the boiling point. Preferably, the temperature is 37 ° C to 93 ° C, preferably 53 to 75 ° C, more preferably 60 to 70 ° C. One of the advantages of the process for preparing an adhesive composition of the invention is that it is not mandatory that all the steps be performed in one place. It is for example possible to prepare the dry blending of a protein, at least one polysaccharide, alkaline metasilicate and optionally one or more adjuvants in one place and to transport it to a second, another place where it is added the aqueous solution, mixed and the resulting mixture subjected to the heat treatment.
    An object of the invention is therefore also a premix of an adhesive composition as described above, consisting of a dry mixture of a protein, at least one polysaccharide, alkaline metasilicate and optionally a or several adjuvants. The constituents of the dry mix and the amounts used are those defined above with respect to the process for preparing the adhesive composition of the invention.
    Another object of the invention is the use of the adhesive composition of the invention for the manufacture of panels of vegetable matter. Thus, the invention also relates to a process for producing panels of plant materials, in particular lignocellulosic materials, comprising a step of treating said plant materials with an adhesive composition according to the invention, especially the mixing of said plant materials with an adhesive composition according to the invention , and steps of shaping and hot pressing the plant materials thus treated.
    Panels of plant material, especially particle board, obtained with the adhesive composition according to the invention have performance, including mechanical quite comparable to panels made with synthetic resins.
    The inventors have also demonstrated that the adhesive composition according to the invention can be used under manufacturing conditions that are close to or identical to the conditions used with synthetic resins, for example of the urea-formaldehyde (UF) type.
    The present invention further allows the manufacture of plant material panels free of formaldehyde and organic solvents which has a considerable advantage in terms of public health, especially for workers and end users. Therefore, the use of these panels in the interior design and furnishings is particularly advantageous. The invention also relates to the use of the adhesive composition of the invention as an assembly glue of wood parts, expanded polystyrene or polyurethane foam.
    FIGURES
    FIG. 1 is a schematic representation of the structure of a repeating unit of a silicate ester polyamide obtained by the reaction between a protein, pectin and alkaline metasilicate, in particular sodium metasilicate.
    FIG. 2 is a schematic representation of the structure of a repeating unit of a silicate sulfonic ester obtained by the reaction between a protein, carrageenan and alkaline metasilicate, in particular sodium metasilicate.
    FIG. 3 shows the infrared spectrum (IR-TF) of an adhesive composition according to the invention based on a silicate ester polyamide.
    Figure 4 shows the infrared spectrum (IR-TF) of gelatin alone. The invention is described in more detail below, with the aid of the following examples which are in no way limiting but are given by way of example only.
    EXAMPLES EXAMPLE 1 6.88 g of gelatin, 1.5 g of pectin and 2.5 g of sodium metasilicate were dry mixed. After homogenization of the mixture was added 27 g of water and the whole is subjected to microwave radiation in a domestic oven at 750W for 30 s. At the end of this treatment and after homogenization, a fluid paste was obtained which was studied in infrared spectroscopy according to the following modalities: a few mg of glue dried in the open air were taken and placed on the support ATR (crystal diamond) of a Shimadzu IR Prestige-21 Fourier Transform IR spectrometer. The spectrum was recorded by co-addition of 100 scans (number of scans) between 4000 cm -1 and 650 cm -1 with a resolution of 4 cm -1.
    The IR-TF spectrum of the final product is shown in FIG. 4. The comparison of this spectrum with that of gelatin showed, on the one hand, the presence of the condensed Si-OC bonds characteristic of silicate esters of the form C-O-) 4Si resulting from the esterification reaction between the alkaline metasilicate and the hydroxyl groups of the serine of the side chains of the protein and secondly, the presence of peptide bonds resulting from the condensation reaction between the carboxylic functions pectin and amine functions of the lysines of the side chains of the protein thus indicating that the final product is a silicate polyamide ester. EXAMPLE 2: 6.88 g of gelatin, 1.5 g of pectin and 2.5 g of sodium metasilicate were dry blended. The mixture can be stored for several months away from moisture in a closed jar. At the time of use, 27 g of water was added and the assembly was subjected to microwave radiation in a domestic oven at 750W for 30s. At the end of this treatment and after homogenization, a fluid paste which has adhesive powers was obtained. This paste has been mixed with wood chips in proportions that vary with their particle size. That is to say 3.90% for chips with a particle size less than or equal to 5 mm and 5.34% for chips having a particle size of less than or equal to 1.25 mm. The chips containing glue were introduced into a mold of dimensions 10 * 10 cm. in 3 layers. The first 40.8g corresponds to the finest grain size. The second 63,32g at the highest particle size. The third layer was identical to the first. The assembly was thermocompressed on a 350kN HYDRO MTR press with a load of 200kN for 4min, 100kN for 40s, 50kN for 20s and a platen temperature of 90 ° C for a total of 5min.
    After cooling, the panels were cut into parallelepiped test pieces of dimensions 10 cm (length) x 1.58 cm (thickness) x l, 93 cm (width). The flexural tests carried out according to standard NF EN310 June 1993 on a Shimadzu AGX-IOkNX machine led to a maximum stress of 13.9 ± 0.6 MPa. EXAMPLE 3
    All conditions remaining otherwise identical to those of Example 1, the solid + water mixture was subjected to activation by microwaves for 27s. A maximum flexural stress of 14.4 ± 1 MPa is obtained. EXAMPLE 4
    All conditions remaining otherwise identical to those of Example 1, the solid + water mixture was subjected to activation by microwaves for 25s. A maximum flexural stress of 14.6 ± 0.4 MPa is obtained. EXAMPLE 5
    All conditions remaining otherwise identical to those of Example 2, the pectin was replaced by carrageenan iota. A maximum flexural stress of 15.2 ± 1.6 MPa is obtained. EXAMPLE 6
    The procedure remaining identical to that of Example 1, the pectin was replaced by crushed green algae. To 27.52 g of gelatin was added 6g of green algae and 10g of sodium metasilicate. After dry mixing, 75 g of water and 1.4 g of glyoxal were added and mixed again. The assembly was then subjected to microwave treatment in a household oven at 750W for 20s. The bending test of the panel obtained leads to a maximum stress of 15.55 ± 0.64 MPa. EXAMPLE 7
    All the operating conditions being otherwise identical to those of Example 6, the pectin was only partially replaced, ie an addition of 3 g of pectin and 3 g of crushed green algae in the dry mixture. In the wet mixture, 1 g of paraffin emulsion was added. The bending test of the panel obtained leads to a maximum stress of 13.24 ± 0.16 MPa. EXAMPLE 8
    A dry mixture consisting of 27.52 g of gelatin, 6 g of pectin and 10 g of sodium metasilicate was added with 75 g of water and the whole is exposed to microwave radiation in a domestic oven at 750 W for 30 seconds. 20 cm × 20 cm panels were prepared according to the same procedure as in Example 1. The thermocompression time is 2 minutes, the temperature plates 195 ° C. and the pressure applied 200 kN for 1 minute 25 seconds, 100 kN for 25 seconds and 50 kN for 10 seconds. The 715kg / m3 and 15.90mm thickness specimens were bent tested on a Shimadzu AGX-IOkNX machine. The following results were obtained:
    Module: 2288 ± 74 MPa
    Max stress: 15.23 ± 0.31 MPa Deformation at break: 1.22 ± 0.08%
    The perpendicular traction tested according to standard NF EN 319 June 1993 is 0.33 ± 0.04 MPa. The screw tear determined according to standard NF B 51-260 August 1992 is 78.75 ± 4.77 daN.
    The swelling evaluated according to standard NF EN 317 June 1993 is 29.1%. EXAMPLE 9
    The dry mixture of Example 8 was supplemented with 3 g of sebacic acid, 5 g of a 0.6% paraffin emulsion and 75 g of water. After exposure to microwave radiation in a domestic oven at 750W for 30s, the mixture was homogenized and then added to the wood chips under the same conditions as in Example 1. The density panels were produced 624 kg / m3 and thicknessl5.52 ± 0.00 is performed under the same conditions as in Example 8. The results obtained during the tests carried out according to the procedures given in Example 8 are:
    Module: 3804 ± 68 MPa Max stress: 19.32 ± 2.71 MPa Deformation at break: 1.01 ± 0.08%
    Perpendicular traction: 0.42 ± 0.02 MPa Swelling: 27.42 ± 0.74% EXAMPLE 10
    All the conditions being identical to those of Example 7, the dry mixture is supplemented with 3.4 g of a hydroforming: Polyfox 156A supplied by OMNOVA Solutions. The results obtained are:
    Module: 2759 ± 56MPa Max stress: 17.13 ± 0.02 MPa Deformation at break: 1.09 ± 0.01 MPa Swelling: 23.02 ± 1.47% EXAMPLE 11:
    Adhesive compositions having Formulations F1 to F6 identified in Table 1 below were prepared by first mixing the solids dry. Then water and Polyfox 156 A were added. After exposure of the resulting mixture to microwave radiation in a domestic oven at 750W for 30s, the paraffin emulsion was added. The amounts of each constituent, except water, are given in dry weight.
    Table 1
    These adhesive compositions were used to manufacture particle boards according to the procedure described in Example 8. The panels obtained show excellent performance in terms of modulus of elasticity and flexural strength. The elasticity and flexural tests were carried out according to the EN 312-2009 standard. With a modulus of elasticity (ME) greater than 3000 MPa and a flexural strength of at least 18 MPa, the panels obtained with the adhesive compositions according to the invention therefore meet the mechanical requirements of the EN 312-2009 standard for P6 panels (the most efficient panels). The results are summarized in Table 2 below.
    Table 2
    Proportion of glue per layer relative to M. S:
    Inner layer: 3.23 to 3.72%
    Outer layers: 6.08 to 6.62% EXAMPLE 12:
    A dry mixture consisting of 27.62 g of gelatin, 6 g of pectin, 10 g of metasilicate, 3 g of sebacic acid was added with 60 g of water. The assembly was exposed to microwave radiation in a domestic oven at 750W for 30 s. An adhesive mixture was obtained which has a viscosity of 7800 mPa.s at room temperature. The sticky mixture was spread, with a spatula, at a rate of 0.02 g / cm 2 on a surface of 25 × 12.5 mm 2 of a beech test tube of dimensions: 100 mm × 25 mm × 5 mm which was then assembled with another identical test piece. Shear tensile tests were carried out according to the NFT76-107 (iso4687) April 2009 standard with a Shimadzu AGX-IOkNX traction machine equipped with a 10kN cell.
    The results at 48h of the modulus of the stress at break are compared in Table 3 with those obtained for a UF adhesive tested under the same conditions.
    Table 3
    EXAMPLE 13
    27.52 g of gelatin, 6 g of pectin, 10 g of metasilicate, 3 g of sebacic acid, 1.7 g of melamine and 0.05 g of hemoglobin were dry blended, 75 g of water and 3.6 g Polyfoxl56A. The whole was subjected to a microwave radiation in a household at 750W for 30s.
    Samples of polyurethane foam, polystyrene 50x50 mm were cut and then glued face to face with the glue thus obtained. 24 hours later the samples were glued with hot glue on T-shaped supports and then subjected to a perpendicular tensile test on a Shimadzu AGX-IOkNX machine.
    The results are summarized in Table 4 below.
    Table 4
    In the case of polyurethane foam samples the fracture is in the material and not at the bonding interface.
    权利要求:
    Claims (12)
    [1" id="c-fr-0001]
    An aqueous adhesive composition comprising as main adhesive component a silicate ester obtained by reaction between a protein, a polysaccharide and an alkaline metasilicate, the protein comprising one or more of each of the following amino acids: serine, threonine and lysine and the polysaccharide comprising carboxylic groups (-COOH) and / or sulphonic groups (-SO3H).
    [2" id="c-fr-0002]
    2. Adhesive composition according to claim 1, characterized in that the protein is gelatin.
    [3" id="c-fr-0003]
    3. Composition according to claim 1 or 2, characterized in that the polysaccharide is chosen from galacturonates, alginates, xanthan, gellan, ulvans, carrageenans (iota, kappa, lambda), fucans and mixtures thereof, preferably from pectins, alginates, xanthan, gellan, ulvans, carrageenans (iota, kappa, lambda), fucans and mixtures thereof, more preferably from pectins, ulvans, iota carrageenan and mixtures thereof .
    [4" id="c-fr-0004]
    4. Composition according to any one of the preceding claims, characterized in that the polysaccharide is chosen from pectins.
    [5" id="c-fr-0005]
    5. Composition according to any one of claims 1 to 3, characterized in that the polysaccharide is selected from broyais or powders of algae.
    [6" id="c-fr-0006]
    6. Composition according to any one of the preceding claims, characterized in that it further comprises one or more adjuvants, in particular chosen from fluidizing agents, water-repellent agents, melamine, sebacic acid, surfactants, glyoxal. , glycerol triacetate and parraffine.
    [7" id="c-fr-0007]
    A process for preparing an adhesive composition comprising a silicate ester as a major adhesive component according to any one of claims 1 to 6, comprising at least the following steps: - preparing a dry mixture of a protein, at least one alkaline metasilicate polysaccharide and optionally one or more adjuvants, the protein comprising one or more of each of the following amino acids: serine, threonine and lysine, the polysaccharide having carboxylic groups (-COOH) and / or sulfonic groups (-SO3H) and all the constituents of the mixture being in powder form, - adding an aqueous solvent to the mixture prepared in the preceding step and mixing, - subjecting the mixture obtained in the preceding step to a heat treatment so as to obtain a silicate ester.
    [8" id="c-fr-0008]
    8. Premix of an adhesive composition according to any one of claims 1 to 6, consisting of a dry mixture of a protein, at least one polysaccharide, alkali metasilicate and optionally one or more adjuvants, the protein comprising one or more of each of the following amino acids: serine, threonine and lysine and the polysaccharide having carboxylic groups (-COOH) and / or sulfonic groups (-SO3H).
    [9" id="c-fr-0009]
    9. Use of an adhesive composition according to any one of claims 1 to 6 for the manufacture of panels of plant material.
    [10" id="c-fr-0010]
    10. Use according to claim 9, characterized in that the plant material panels are particle board, fiber board, lamella panels or plywood panels.
    [11" id="c-fr-0011]
    11. A method of manufacturing plant material panels, comprising a step of treating said plant materials with an adhesive composition according to any one of claims 1 to 6, and steps of shaping and hot pressing, plant materials. thus treated.
    [12" id="c-fr-0012]
    12. Use of an adhesive composition according to any one of claims 1 to 6 as an assembly glue of wood parts, expanded polystyrene or polyurethane foam.
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    Pedieu2008|Valorisation des résidus d'écorce de bouleau blanc | sous forme de fabrication de panneaux
    BE898275A|1984-03-16|Composite material based on particles of plant origin and method of manufacturing the same.
    FR2768645A1|1999-03-26|COMPOSITION AND PROCESS FOR PRODUCING COMPOSITE MATERIALS BASED ON WOOD FIBERS AND MATERIALS OBTAINED
    同族专利:
    公开号 | 公开日
    WO2017051106A1|2017-03-30|
    FR3041356B1|2019-06-07|
    EP3353256A1|2018-08-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4095990A|1976-07-26|1978-06-20|Hudson Industries Corporation|Dry flexible glue compositions and method of making same|
    WO1995014448A2|1993-11-23|1995-06-01|Bioderm, Inc.|External incontinence device and vapor-absorptive adhesive compositions|
    WO2005063308A1|2003-12-22|2005-07-14|Institute For Environmental Health, Inc.|Adherent antimicrobial barrier and sanitizing agent|
    FR2942234A1|2009-02-17|2010-08-20|Univ Picardie|PROCESS FOR OBTAINING AGRO MATERIAL, PARTICULARLY AGRO BINDER OR AGRO COMPOSITE, AND AGRO MATERIAL OBTAINED BY SUCH A METHOD|
    CN104349687A|2012-03-28|2015-02-11|R.J.雷诺兹烟草公司|Smoking article incorporating conductive substrate|
    EP3455183B1|2016-05-13|2021-07-07|Rockwool International A/S|Binder composition for mineral fibers comprising at least one hydrocolloid.|
    CN111019597B|2019-12-02|2020-11-13|福建农林大学|Vegetable protein-based adhesive and preparation method and application thereof|
    CN112341990A|2020-11-27|2021-02-09|马鞍山市康辉纸箱纸品有限公司|Vegetable protein adhesive for corrugated board production|
    法律状态:
    2016-09-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-24| PLSC| Search report ready|Effective date: 20170324 |
    2017-09-29| PLFP| Fee payment|Year of fee payment: 3 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-30| PLFP| Fee payment|Year of fee payment: 5 |
    2021-06-11| ST| Notification of lapse|Effective date: 20210506 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1558855A|FR3041356B1|2015-09-21|2015-09-21|ADHESIVE COMPOSITION COMPRISING A SILICATE ESTER|
    FR1558855|2015-09-21|FR1558855A| FR3041356B1|2015-09-21|2015-09-21|ADHESIVE COMPOSITION COMPRISING A SILICATE ESTER|
    EP16781839.2A| EP3353256A1|2015-09-21|2016-09-20|Adhesive composition comprising a silicate ester|
    PCT/FR2016/052375| WO2017051106A1|2015-09-21|2016-09-20|Adhesive composition comprising a silicate ester|
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