ADHESION COMPOSITION FOR A TEXTILE MATERIAL AND ASSOCIATED REINFORCING TEXTILE MATERIAL

Abstract

The invention relates to an adhesion composition for textiles, comprising a lignosulfonate salt, an epoxy hardener of said salt comprising at least two epoxide units, and an elastomer latex. The lignosulfonate salt can be sodium, potassium, magnesium, ammonium, or calcium lignosulfonate. The invention also relates to the use of such a composition to impart adhesion properties to a reinforcing textile, in relation to a rubber, a reinforcing textile, particularly yarn, cable, or textile structure, at least partially coated and / or impregnated with said composition, and a rubber part or part comprising a rubber, wherein the rubber comprises at least one reinforcing textile, on the surface and / or integrated within the rubber.

Description

ADHESION COMPOSITION FOR A TEXTILE MATERIAL AND ASSOCIATED REINFORCING TEXTILE MATERIAL The present invention relates to an adhesive composition for textiles, in particular a composition that enables the adhesion of a textile to rubber. The invention relates particularly to applications in the field of belts, hoses, tires, air springs (air shock absorbers), and more generally, any part or article made of rubber, or comprising a part of rubber, in which the rubber comprises a reinforcing textile on the surface and / or within the material (in the bulk). Therefore, the invention also relates to reinforcing textiles coated with this adhesive, and to parts or articles that incorporate them both on the surface and within the material. Background of the invention For example, in the case of transmission belts, the reinforcing textile must first and foremost ensure the belt's dimensional stability. This requires the reinforcement to have specific mechanical properties in various environments. To guarantee the required properties, and in particular to prevent the risk of delamination, the textile reinforcement must be bonded to the belt's rubber. The reinforcement may be in contact with one or several different rubbers. To ensure good compatibility with the rubber, the reinforcement is generally treated with an adhesive. More complex properties of the reinforcement may also be required. For example, the edge of the reinforcement, when cut and exposed on the belt side, must not fray, yet it must be easy to cut. To guarantee these other properties, other types of treatment can be applied to the yarn. To obtain all these properties, it is necessary to give structure to the yarn, especially in the form of a cable, and apply various chemical and thermal treatments. Because several different treatments are applied to the textile reinforcement, it is essential to ensure the compatibility of the adhesive with the reinforcement, the rubber, and also the other treatments applied to the reinforcement. The main objective of chemical treatments is to make a specific reinforcement adhere to the various rubbers it may encounter. The treatments are as varied as the types of reinforcements [glass, aramid, polyamide (PA), polyethylene terephthalate (PET), etc.] and rubber families. At the heart of the treatment for bonding reinforcing fabric to rubber lies the so-called resorcinol-formaldehyde-latex (RFL) treatment. This system involves mixing a latex (a colloidal aqueous dispersion of elastomer or polymer) with thermoset resins of the phenolic or aminoplastic type. This system has a long history; it was extensively developed in the 1970s and remains the treatment of choice. Despite numerous attempts to replace it, a comprehensive solution offering equivalent performance has yet to be found. It is fully optimized to achieve maximum static adhesion, meaning without dynamic stress. Heat treatment influences chemical properties (adhesion), but also mechanical properties in the case of synthetic reinforcements. It impacts characteristics such as shrinkage, among others. The oven treatment results from the balance between maintaining mechanical properties and crosslinking the adhesive. For all these reasons, the new treatment must be adaptable to current treatment conditions to guarantee its mechanical properties. However, an adhesive that allows treatment at a lower temperature will potentially offer novel and interesting properties in certain applications and will exhibit an energy-efficient aspect. However, to improve adhesion performance or to provide abrasion resistance, it may be necessary to apply up to four different treatments to a textile successively, including RFL treatment. These are the following treatments: 1) The treatment of the yarn core allows the filaments to be trapped in a matrix and locked together. This gives it resistance to fraying and makes the yarn rigid. 2) Pre-activation, to improve adhesion. 3) RFL treatment, in one or two layers. 4) Final coatings in the form of commercial adhesion promoters, or elastomer solutions (sometimes called cementation). Therefore, it is also preferable that any change in a formulation does not call into question the functionality of the various chemical and thermal (or physical, more generally) treatments that are normally used for various applications. Considering all the limitations mentioned above, RFL treatment has become the preferred method for achieving adhesion between textiles and rubber. The phenomena involved in adhesion are utilized during the vulcanization of the rubber component, while the RFL treatment itself can be applied to the fabric several months prior. This is why the term "adhering treatment" is used, reserving the term "adhesion" for the bonded state. In RFL, the latexes are colloidal aqueous dispersions of elastomers or polymers, generally similar in nature to the rubber being bonded. However, these latexes do not possess any real mechanical properties on their own. To ensure the system's strength, a thermosetting resin is added. This is an RF resin, made with resorcinol and formaldehyde. Thanks to its polarity, it provides good adhesion to the textile.It forms a mesh in which the latex is trapped, giving rigidity to the system. This mesh remains flexible enough to allow the diffusion of elastomer chains into the matrix, thus creating good adhesion to the rubber (intertwining, molecular interactions, and possibly co-crosslinking during vulcanization). The RFL contains formalin and resorcinol, which are currently known to be suspected carcinogens. Therefore, it would be interesting to find an alternative to this formalin and resorcinol, or to the RFL composition in its entirety. The complex properties of RFL, both in its implementation and in the properties of the end products that incorporate it, reiterated above, make finding an alternative solution a real challenge. It would be even more interesting to find such a solution that is more than just an alternative, but also offers improved performance. These are the challenges the inventors set out to overcome. The object of the invention is, therefore, to provide new adhesion solutions that allow, in particular, the replacement of RFLs in their known applications, and that offer performance levels close to or even higher than them, and that this is achieved with components acceptable in the context of sustainable development and under favorable economic conditions. Lignosulfonates are offered as a natural adhesive and as a binder for short fibers in the manufacture of mats (nonwoven fabrics) in combination with lignosulfonate hardeners, or as adhesives in multi-layered wood-based products. They have never been proposed in compositions as alternatives to lignosulfonates, and there is no indication that lignosulfonates could be suitable for developing bonding formulations that ensure a bond with rubbers and offer sufficient mechanical performance. They are also used as surfactants in compositions that, therefore, do not contain a hardener, as described in patent documents JP2002226812 and JP2001234143. Brief description of the invention The object of the invention is, therefore, a composition comprising (or based on, essentially consisting of, or composed of) a lignosulfonate salt, an epoxy hardener of this salt, and a polymeric latex, particularly elastomeric. It is, in particular, an adhesive or bonding composition for textiles. The term “epoxy hardener,” as described in the invention, is understood to refer to a compound comprising at least two epoxy units, or an oxacyclopropane or -CH-CH2-O ring. This compound can react by addition with components such as alcohols through the opening of the epoxy ring. The presence of two epoxy units enables reaction with two alcohol-containing units and thus a polymerization reaction, also known as crosslinking. The epoxy hardener according to the invention is therefore a crosslinking agent of the lignosulfonate salt. An object of the invention is also a composition, particularly an adhesive or bonding agent, for textiles, obtained or obtainable by mixing a lignosulfonate salt, an epoxy hardener of this salt, and a polymeric latex, particularly an elastomeric latex. In one embodiment, the composition is obtained or obtainable by mixing a lignosulfonate salt and an epoxy hardener of this salt in a basic medium, followed by the addition of a polymeric latex, particularly an elastomeric latex; or by mixing a lignosulfonate salt in a basic medium with a polymeric latex, particularly an elastomeric latex, followed by the addition of an epoxy hardener of this salt. In one embodiment, the composition comprises a product resulting from the reaction between the lignosulfonate salt in a basic medium and the epoxy hardener of this salt. The compositions may be adhesion compositions used to bond textiles to rubber or a similar material. These compositions are compositions that can be applied to a substrate, particularly a textile, and in particular the textiles according to the invention. The invention also relates to the method of preparing them. An object of the invention is also compositions that dry and cure after undergoing a suitable treatment process, such as heat treatment. The term "drying" refers to the evaporation of water or volatile matter. The term "curing" refers to any polymerization or crosslinking reaction, total or partial, of the compounds present in the composition and capable of reacting under the applied treatment conditions, even without heat treatment. Therefore, these dried and cured compositions are generally associated with a substrate, such as a textile, particularly textiles according to the invention, or with rubber or similar components incorporating these textiles. The term "associated" is used to indicate that the composition impregnates the textile, coats the textile, or both impregnates and coats the textile. The coating may be continuous or discontinuous.Impregnation can be complete, reaching the core, or partial. An object of the invention is also a kit or assembly comprising a first composition consisting of a lignosulfonate salt and a polymeric latex, in particular an elastomeric latex; and a second composition comprising an epoxy hardener of the lignosulfonate salt. The first and second compositions are suitable and intended to be mixed to form the adhesion composition before it is applied to a textile according to the invention. The invention also relates to a method of applying an adhesion composition according to the invention to impart adhesion properties to a reinforcing textile with respect to a rubber or similar material. This method includes drying and curing the composition by means of a suitable treatment process, such as a heat treatment. The invention also relates to the use of a composition according to the invention or of a dried and cured adhesion composition, in order to impart adhesion properties to a reinforcing textile, with respect to a rubber or similar material. The invention also relates to a reinforcing textile, in particular a yarn, cable or textile structure, at least partially coated and / or impregnated with an adhesion composition according to the invention, which is in particular dried and cured. The invention also relates to an article or part made of rubber (or similar material) or comprising a part made of rubber (or similar material), wherein the rubber comprises at least one reinforcing textile according to the invention, on the surface and / or integrated within the rubber or rubber matrix. Other aspects of the invention will become apparent upon reading the detailed description that follows. Detailed Description The first object of the invention is, therefore, an adhesive or bonding composition for textiles, comprising (or is based on, essentially consists of, or is composed of) at least one lignosulfonate salt, at least one epoxy hardener of this salt, and an elastomeric latex. Without intending to be limited by theory, it is believed that the lignosulfonate salt and the epoxy hardener t7QQbnn / 77n7 / B / YIAI of said salt, by definition, react together to provide a reaction product when mixed together, whether or not the mixture is subjected to heat, such as a heat treatment to be applied to the textile after it has been coated and / or impregnated with the adhesive composition. The lignosulfonate salt is expected to initiate a crosslinking reaction with the epoxy hardener by adding the reactive units of the lignosulfonate to the epoxy rings and opening these rings when the compounds are subjected to heat. This heat can be applied during a heat treatment process, such as the heat treatment applied to a textile after coating and / or impregnation with the adhesive composition.Because the epoxy hardener contains at least two epoxy units, a crosslinking reaction is expected, resulting in the formation of a polymer or resin. Under favorable conditions, this reaction is expected to be favored by the presence of a basic medium. This reaction state has been studied and described in more detail in Part I of the examples. However, the possibility of one or more reaction mechanisms occurring between the lignosulfonate salt and the epoxy during preparation or storage cannot be excluded. The term “reaction product,” as is evident, is understood to refer to the product of the reaction between the lignosulfonate and the epoxy hardener, excluding any additives that may be present in the final composition. This composition can be obtained, in particular, by a method, which is also the subject of the invention, according to which the three ingredients are mixed with stirring. As illustrated in the examples, according to one method, the lignosulfonate salt can be dissolved in water before mixing the resulting solution with latex and epoxy. This solubilization can be facilitated by working in a basic medium, adding a soda-like agent and / or ammonia. In another method, the lignosulfonate salt solution and latex are mixed first, and only then is the epoxy added. In yet another method, the lignosulfonate salt solution and the epoxy hardener are mixed first, and only then is the latex added. These two methods constitute two possible combinations. It should be noted that, unless otherwise stated, the term "addition" can be understood as the addition of the first product to the second, or vice versa. In one embodiment of the preparation method, the lignosulfonate salt is dissolved in water with stirring and in the presence of a pH-adjusting agent. The mixture is stirred until dissolution, preferably complete. It is then added, with stirring, to the latex, before incorporating, also with stirring, the hardener (preferably dissolved or dispersed beforehand in water, for example, with vigorous stirring). In a practical embodiment, the lignosulfonate salt and latex mixture is added to the epoxy hardener solution or dispersion. Mixing with the epoxy hardener can be performed after the preparation of the lignosulfonate and latex mixture, or subsequently, as in the case of the kit or set of the invention. The composition can be used as a ready-to-use adhesive composition or one that can be diluted as required. According to another embodiment of the method, an aqueous solution of lignosulfonate and epoxy hardener can be mixed before adding the mixture, with stirring, to an aqueous dispersion of latex. In one practical embodiment, the mixture of lignosulfonate salt and epoxy hardener is added to the latex. Advantageously, the pH of the lignosulfonate solution or the lignosulfonate and hardener solution is adjusted to be basic, for example, by adding sodium hydroxide and / or ammonia, before incorporating the latex. The composition can be used as a ready-to-use bonding composition or one that can be diluted as required. The following characteristic features are applicable to the various objects of the invention. The latex is preferably a basic aqueous dispersion of the polymer(s) and / or elastomer(s). It is also possible to work according to the invention at a neutral pH. The working pH values ​​may be, in particular, those mentioned below in relation to the pH of the composition. The term “elastomer” is understood, in particular, to mean a chain of polymers or copolymers whose glass transition temperature (Tv) is below approximately 25°C. Elastomers are present in the rubber to be bonded and in the latex of the bonding composition. An “elastomeric latex” is a colloidal aqueous dispersion of an elastomer. The terms “rubber” or “elastomeric material” herein refer to the vulcanized or crosslinked product prepared from an elastomer or elastomeric rubber, whether synthetic or natural, with one or more fillers, reinforcing agents (carbon black, silica, kaolin, etc.), plasticizers, vulcanizing agents (sulfur, peroxide, metal oxides, and necessary accelerators), and any other additives commonly used for the application in question (e.g., to facilitate application, for protection against oxygen, ozone, heat, flame, and UV rays). The invention also relates to both synthetic and natural rubbers. Rubbers formulated with elastomers are materials whose melting point is lower than the service temperature, operating temperature, or use temperature of the mechanical parts or assemblies formed with one or more rubbers. Lignosulfonates are byproducts of wood processing, particularly from the treatment of wood for paper pulp production using the acid bisulfite cooking method. This method, which uses a bisulfite, yields the corresponding lignosulfonate salts depending on the nature of the counterion used. These lignosulfonates can also be derived from a method specifically designed to produce them from wood. Preferably, in the adhesion composition, the lignosulfonate salt can be a sodium, potassium, magnesium, ammonia or calcium salt. In an exemplary form, lignosulfonates prepared by the bisulfite method from maritime pine, for example, originating from the Landes (France). Preferably, the adhesion compositions do not include formaldehyde or formalin. Preferably, the adhesion compositions do not include resorcinol. Preferably, the adhesion compositions do not include formaldehyde or formalin, nor resorcinol. Preferably, the adhesion compositions do not include an organic solvent. They use water as a solvent, the pH of which can be adjusted as needed. t7QQbnn / 77n7 / B / YIAI The epoxy hardener according to the invention is a polyepoxy compound comprising at least two epoxide or epoxy groups or units. Specifically, it may include those containing, on average, more than one glycidyl or methyl-glycidyl radical supported by a heteroatom, preferably an oxygen or nitrogen atom, more particularly an oxygen atom; or those containing, on average, more than one cyclohexyl epoxy group. Several different compounds from the following lists may be used. The following hardeners are particularly noteworthy: - diglycidyl or polyglycidyl ethers of aliphatic polyols; - diglycidyl or polyglycidyl ethers of polyfunctional phenols; - polyglycidyl ethers of condensation products of phenols with formaldehyde obtained under acidic conditions; - diglycidyl or polyglycidyl esters of aliphatic or aromatic polycarboxylic acids; - compounds containing epoxycyclohexyl groups; - polyepoxy compounds resulting from the epoxidation of an olefinicly unsaturated compound. The following can be mentioned in particular: - diglycidyl or polyglycidyl ethers of aliphatic polyols such as 1,4-butanediol; 1,6-hexanediol; 1,2,6-hexanetriol; glycerol; neopentyl glycol; ethylene glycol; triethylene glycol; 1,2-propylene glycol or polyalkylene glycols such as polypropylene glycols or polyalkylene glycol derivatives, for example, polypropylene glycols; - diglycidyl or polyglycidyl ethers of polyfunctional phenols such as 2,2-bis(4-hydroxyphenylpropane) (or BPA); 2,2-bis(4-hydroxyphenyl)hexafluoropropane (or BPA-F); 1,1-bis(4-hydroxyphenyl)-1-phenylethane (or BPA-P); 2,2-bis(4-hydroxyphenyl)butane (BPB); bis-(4-hydroxyphenyl)diphenylmethane (or BPBP); 2,2-bis(3-methyl-4-hydroxyphenyl)propane (or BPC); bis(4-hydroxyphenyl)-2,2-dichloroethylene (or BPCII); bis(4-hydroxyphenylmethane) (or BPF); 4,4'-(9 / 7-fluoroen-9-ylidene)bisphenol (or BPFL); 2,2-bis(4-hydroxy-3-isopropylphenyl)propane (or BPG); 1,3-bis(2-(4-hydroxyphenyl)-2-propyl)benzene (or BPM); 1,1-bis(4-hydroxyphenylcyclohexane (BPZ) and the like; - polyglycidyl ethers of condensation products of phenols with formaldehyde obtained under acidic conditions: phenol novolacs and cresol novolacs, and the like; - ethers of compounds containing epoxycyclohexyl groups, such as 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate; epoxy-8,9-(epoxy-3,4-cyclohexyl)-3-dioxa-2,4-spiro-5,5-undecane; and bis-(epoxy-3,4-cyclohexylmethyl) adipate and the like; - diglycidyl or polyglycidyl esters of polycarboxylic acids, such as italic acid, terephthalic acid, A-tetrahydrophthalic acid, hexahydrophthalic acid, trimellitic acid, oxalic acid, succinic acid, glutaric acid, dimerized linolenic acid and the like. The epoxy hardener may be selected, in particular, from the compounds listed below, it being understood that the composition may incorporate one or more of them, in particular 2 of them: - 1,4-butanediol diglycidyl ether (diglycidyl ethers of aliphatic polyols) - 2,2-bis(4-hydroxyphenyl)propane diglycidyl ether (diglycidyl ethers of polyfunctional phenols) - diglycidyl 1,2-cyclohexanedicarboxylate (diglycidyl or polyglycidyl ethers of polycarboxylic acids) - 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (Compounds containing epoxycyclohexyl groups) - 1,6-hexanediol diglycidyl ether (diglycidyl ethers of aliphatic polyols) - diglycidyl ether glycerol (diglycidyl ethers of aliphatic polyols) - glycerol triglycidyl ether (polyglycidyl ethers of aliphatic polyols) - mixture of diglycidyl glycerol ether and triglycidyl glycerol ether, for example, marketed by the company Raschig with the product reference GE100 (diglycidyl ethers of aliphatic polyols) - novolac type epoxy resins marketed, for example, by the company HUNTSMAN with the product reference Araldite PZ 323 (polyglycidyl ethers of condensation products of phenols with formaldehyde). The epoxy hardener can also be selected from N-glycidyl derivatives of amines, amides, and heterocyclic nitrogenous bases, for example: N,N-diglycidyl-aniline; N,N-diglycidyl-toluidine; N,N,N',N' tetrakis-glycidyl bis-(4-aminophenyl)-methane; triglycidyl derivative of hydroxy-4-aniline; triglycidyl isocyanurate; N,N'-diglycidyl-ethylene-urea; N,N'-diglycidyl dimethyl-5,5 hydantoin; N,N'-diglycidyl isopropyl-5 hydantoin; and N,N'-diglycidyl dimethyl-5,5 isopropyl dihydro-5,6 uracil. The latex can advantageously be a carboxylated acrylonitrile / butadiene copolymer latex (XNBR), a hydrogenated acrylonitrile / butadiene latex (HNBR), a chlorosulfonated polyethylene latex (CSM), a styrene-butadiene-vinylpyridine copolymer latex (VPSBR), a styrene / butadiene copolymer latex (SBR), an acrylonitrile / butadiene copolymer latex (NBR), a polybutadiene latex (BR), a chlorobutadiene latex (CR), a natural rubber latex (NR), a polyurethane latex, or a mixture of at least two of these. The dry matter content of the composition, by weight, may be particularly between approximately 2 and approximately 38%, particularly between approximately 4 and approximately 30%, more particularly between approximately 7 and approximately 25%. The composition according to the invention may comprise, in particular, from approximately 40 to approximately 95%, preferably from approximately 55 to approximately 90% or from approximately 40 to approximately 60, 70, 80 or 90% by weight of elastomer in relation to the composition. Unless otherwise stated, the composition is given as dry matter. In the composition, the hardener / lignosulfonate salt mass ratio may be between approximately 0.01 and approximately 5, more particularly between approximately 0.03 and approximately 1, typically between approximately 0.05 and approximately 0.5. Lower or higher values ​​may be possible depending on the hardener and lignosulfonate salt pairs selected, and this parameter can be determined by a skilled technician based on this description. In the composition, the mass ratio [hardener + lignosulfonate salt] / latex may be between approximately 0.05 and approximately 0.6, more particularly between approximately 0.15 and approximately 0.5. Lower or higher values ​​may be possible depending on the compounds selected in combination, and this parameter can be determined by a skilled technician based on this description. According to an advantageous characteristic, the composition has a neutral or basic pH, in particular a pH between approximately 7 and approximately 13, and more specifically between approximately 9 and approximately 13. For this purpose, the composition may include an additive that allows the pH to be adjusted, for example, soda ash. The composition comprises water from elastomeric latex. Additional water may be added to make the composition sufficiently fluid for conventional application, such as impregnation. The composition may also include additives in a content, in particular, between approximately 0.01 or 0.1 and approximately 50% by dry mass. The composition may include, in particular, an aqueous-soluble adhesion promoter (e.g., silane, blocked isocyanate), a surfactant, a dispersant, an antifoaming agent, a wax (e.g., microcrystalline hydrocarbon wax in emulsion), a filler (e.g., carbon black, silica), a colorant, a metal oxide (e.g., zinc oxide ZnO), an elastomeric crosslinking agent, an anti-UV agent, an anti-ozone agent, and a heat protectant. These agents are additives conventionally used in RFL formulations. They are compatible with the adhesive of the invention. In one embodiment, the textile adhesion composition essentially comprises a lignosulfonate salt, an epoxy hardener of this salt, and an elastomeric latex, and may include one or more additives, in particular one or more of the additives mentioned in the preceding paragraph. Advantageously, the compositions according to the invention do not include any conventional catalyst or hardener for compounds containing an epoxy group or unit, such as triethylenetriamine (TETA) and triethylamine (TEA). The viscosity of the bonding compound is measured at 23°C using a Brookfield viscometer, for example, one equipped with a ULA module suitable for low viscosities. As detailed in the examples, the viscosity can be adjusted, particularly by adjusting the water content. The viscosity can be adjusted to achieve the desired level to ensure good application to the textile in the coating or impregnation process used. In the case of dip impregnation, this viscosity can be between approximately 1 and approximately 10, typically between approximately 1 and approximately 5 cp or mPa·s. The composition according to the invention can be applied to any textile. The term “textile” in the sense of the invention refers to: continuous monofilament yarn, continuous multifilament yarn, staple yarn or fiber, any assembly of continuous monofilament and / or multifilament yarns or staple yarn, in particular a roving, a cable formed from such yarns by conventional twisting techniques, and a “textile structure” formed from the assembly of twisted or cabled yarns, in particular in the form of a fabric, grid, etc. Textiles of the invention, having been treated with the composition according to the invention, are designated by the expression “reinforcing textiles.” Textiles can be organic or inorganic in nature. Regarding the type of textile, examples include glass (particularly fiberglass or high-tensile-strength fiberglass), basalt, carbon, aramid (meta or para), polyvinyl alcohols, cellulose, high-density polyethylene (HDPE), polyester (particularly polyethylene terephthalate, PET), polyamides (PA, particularly PA 4.6, PA 6.6, PA 6), acrylics, hybrids (aramid yarn + nylon yarn, stranded together; acrylic + glass + copper, stranded together), and so on. When the textile is a cable or a multi-strand textile structure, the yarns can all be organic or inorganic, or the cable or textile structure can comprise both types of yarns, organic and inorganic. An object of the invention is also a method of application for applying, or using, an adhesion composition according to the invention to impart adhesion properties to said textile, particularly with respect to an elastomeric material. This use can be broken down in terms of the method of adhering a textile according to the invention. This use or method comprises applying said composition to the textile (yarn, cable, textile structure) and then drying it. This application can be carried out by methods used in the industry for coating, particularly by impregnation, as described below. The choice of latex, and therefore of the constituent elastomer, is advantageously inclined towards a formulation similar in nature to the constituent elastomer of the rubber to be treated. In one modality, the impregnation of textiles is carried out by “immersion” in tanks containing the adhesive preparations.Yarns, ropes, and cables can be subjected, in particular, to a direct immersion process in a tank, or to impregnation using an applicator roller, for the application of the adhesive composition. After immersion or impregnation, the excess wet preparation is preferably removed, for example, by pressing (mordant impregnation), spinning, suction, or physical compression between porous substrates such as foams. After immersion or impregnation, and optionally the removal of the excess preparation, the drying and heat-setting of the adhesive composition is carried out. The coated impregnated textile can be passed through an oven to allow for drying and cross-linking of the adhesive composition.After removing it from the oven, the textile can be subjected again to an impregnation step (by immersion or impregnation using an applicator roller) and subsequently passed through an oven, and these steps can be repeated, in particular up to a total of 4 impregnations (2, 3 or 4). In another impregnation method, particularly suitable for mineral fibers (glass, basalt, carbon, etc.), a bypass system consisting of a comb and / or flexible connecting cable can be used before impregnating a multifilament yarn. This allows for maximum opening of the multifilament yarn, promoting complete impregnation. After immersion or impregnation with an applicator roller, as described above, the excess wet preparation is preferably removed, for example, by pressing (mordant impregnation), suction, or physical compression between porous supports, such as foams. After immersion or impregnation, and optionally the removal of excess, the drying and heat-setting of the bonding composition is carried out. The coated impregnated yarn can be passed through an oven to allow for drying and cross-linking of the bonding composition.After removing it from the oven, the yarn can be subjected to another impregnation step (by immersion or impregnation using an applicator roller) and subsequently passed through an oven, and these steps can be repeated, in particular up to a total of 4 impregnations (2, 3 or 4). After the impregnation, drying, and heat-setting steps, a yarn is twisted in a line. The cabling is preferably done on a pre-treated yarn, but it is also possible to perform the cabling first, followed by the impregnation, drying, and heat-setting steps. In the various methods, speeds can range from 1 m / min to 150 m / min, and oven temperatures from 30°C to 350°C, more specifically from 100 to 300°C, and even more specifically from 140 to 220°C. Mechanical tension can also be applied to the textile throughout the process. One embodiment relates to the production of a textile reinforcement for incorporation into assemblies such as drive belts or conveyor belts. For this purpose, a cable, for example from polyamide such as PA 4-6, is constructed by twisting and subsequent stranding. The resulting cable can be advantageously treated, optionally, by a first core impregnation process designed to lock the filaments together and impart resistance to fraying, while also making the cable rigid. This can be done with a solution of diphenyl methylene diisocyanate in toluene. The impregnated cable is then subjected to drying and heat setting in an oven. Subsequently, the cable is impregnated in a tank containing an adhesion composition of the invention, and then dried and heated in the oven. Another embodiment relates to the production of a textile reinforcement for incorporation into profiles and seals, such as window or door seals. Such reinforcements can be made, in particular, of glass yarns containing a fiberglass sizing with which the adhesive composition must be compatible. The process can begin with glass yarns (specifically glass fibers), subjecting them to a derivatization process (see below) and then to an impregnation process in a tank containing an adhesive composition of the invention. The impregnated yarns are then subjected to a drying and heat-setting process in an oven. Upon removal from the oven, the yarns undergo a twisting operation. A plurality, for example three, of these impregnated twists can then be woven together. Another embodiment relates to the production of a textile reinforcement designed to serve as a braided, wound, wrapped, or knitted reinforcement in a brake hose. It can be made from a yarn of organic material, for example, polyethylene terephthalate (PET), high-density polyethylene (HDPE), or polyamide. Preferably, it is twisted. The yarn, preferably twisted, is impregnated with an adhesive composition of the invention and then dried and heat-set in an oven. In one variation of this method, it is possible to start with similar yarns, constructing a cable by means of successive twisting steps and then stranding. The resulting cable is treated by a first core impregnation process designed to lock the filaments together and give the yarn resistance to fraying, thus also making the yarn rigid, for example, using a solution of methylene diisocyanate in toluene; it is then subjected to drying and heat setting in an oven. The resulting cable is then treated by impregnation in a binding composition of the invention, and then by drying and heat setting in an oven. Other characteristic features related to use or method will become evident upon reading the rest of the description. The invention also relates to a reinforcing textile that is coated and / or impregnated with an adhesion composition according to the invention. Specifically, the invention relates to a reinforcing fabric coated and / or impregnated with an adhesion composition that can be obtained by applying the methods described herein. It also relates to the textile treatment method for treating the textile to produce the reinforcing textile by applying the adhesion composition to said textile. An object of the invention is, in particular, a yarn coated and / or impregnated with an adhesive composition according to the invention. The yarn may be twisted, and the twisting may take place before or after the application of the composition and its drying and / or curing. When the yarn is multifilament, it may be fully impregnated to the core, and this could possibly have been achieved, if necessary, by splitting the yarn (separating the filaments by means known to those skilled in the art) before impregnating it with the composition. This yarn may, in particular, comprise or be coated with the cured (dried and / or crosslinked) adhesive composition. An object of the invention is also a cable coated and / or impregnated with an adhesion composition according to the invention. This cable may, in particular, comprise or be coated with the cured (dry and / or cross-linked) adhesion composition. The cable may consist of at least two strands that are not coated or impregnated with the adhesive composition; in general, each strand is twisted first, then the strands are stranded (assembled together and twisted in the opposite direction to the twist of the elementary strands), and then the cable is impregnated with the adhesive composition, which cures after application. The cable can also be formed by assembling at least two wires coated or impregnated with the adhesive composition; in general, each wire is twisted after the composition solidifies and then the wires are stranded (assembled together and twisted in the opposite direction to the twist of the elementary wires); it is then possible to provide for a coating process of the cable along with other treatment processes (“overcoat” or “final coat”), and the drying of the cable. The object of the invention is also a textile structure formed by assembling threads using techniques known as weaving, or by gluing or welding in the case of grids. These textile structures are coated or impregnated with the composition of the invention, and the invention covers such textile structures that are coated with the cured adhesion composition. The adhesion compositions can be applied to textiles according to the invention using the methods employed for RFLs. First, impregnation is carried out either by direct immersion or by means of an applicator roller. The object of the invention is also a rubber article or part (or comprising a rubber part), comprising at least one reinforcing textile, in particular yarn, cable and / or textile structure, according to the invention. This reinforcing textile may, in particular, be applied to the surface of the article or part and / or integrated into the interior of the article or part. As stated, rubber is a vulcanizable formulation based on natural or synthetic elastomers, such as vulcanized (crosslinked) natural rubber (NR or polyisoprene), or a vulcanized (crosslinked) synthetic rubber.Examples of synthetic rubber include: polybutadiene (BR), polyurethane (AU or EU), polychloroprene (CR), silicone (VMQ, PVMQ) and fluorosilicone (FVMQ), ethylene-propylene-diene monomer (EPDM), butadiene-acrylonitrile copolymers (NBR for nitrile butadiene rubber), hydrogenated butadiene-acrylonitrile copolymers (HNBR), styrene / butadiene copolymer (SBR), epichlorohydrin (ECO or CO), butyl (IIR), bromobutyl (BIIR), chlorobutyl (CIIR), chlorinated polyethylenes (CM), chlorosulfonated polyethylenes (CSM), carboxylated acrylonitrile butadiene nitrile (XNBR), ethylene-methyl acrylate copolymers (AEM), ethylene-vinyl acetate copolymers (EVM and EVA), polyacrylates (ACM), and fluorinated rubbers (FKM), perfluorinated rubbers (FFKM). Rubber can also be a vulcanizable formulation based on mixtures or cuts of such elastomeric rubbers. Rubber can also be a formulation based on thermoplastic elastomers (so-called "physically crosslinked" elastomers such as SBS, styrene-butadiene-styrene block, for example). The object of the invention is, in particular, an article or piece of elastomer or rubber comprising, either embedded within its mass of elastomer or rubber, or flush with the surface, a reinforcing textile bonded according to the invention, for example, one or more threads, which may be individual or wired or assembled into textile structures, or of more than one of these categories. The term “adhered” is understood to indicate, in particular, that the reinforcing textile comprises or is coated with the cured (dry and / or crosslinked) adhesion composition. The object of the invention is also an article or piece of elastomer or rubber comprising, embedded within its mass of elastomer or rubber, one or more threads, which may be individual or wired or assembled into textile structures, or of more than one of these categories, and further comprising, glued or adhered to at least one surface of this elastomeric material or rubber, a textile structure according to the invention, these reinforcing textiles being adhered according to the invention. As articles, the following articles may be mentioned, without being exhaustive, which may incorporate at least one reinforcing textile adhered or glued according to the invention, in particular threads, cords or textile structures treated with the adhesion composition of the invention, applied on the surface of the article to which they adhere and / or are integrated within the elastomeric material of the article: - Belts, in particular drive belts, synchronous belts, conveyor belts, elevator belts, V-belts. Belts may include threads or cords embedded in the elastomeric or rubber mass. They may also comprise, instead of or in addition to thread and cords, a textile structure, in particular a fabric, bonded to the surface, for example on the back in a drive belt, and on the back and groove for a timing belt. - Flexible or rigid hoses, in particular brake hoses (comprising a braided textile structure, either single or double), flexible hoses, industrial hoses (comprising a wrapped or spiral textile structure, i.e., manufactured by wrapping or spiraling), including oil and gas hoses, flexible hoses (knitted textile structure). Braiding, spiraling, and knitting are generally performed during the use of the extruded hose. - Special items: air springs (“air shock absorber”), kinetic coupling discs, hose plugs, compensating joints. - Tires: particularly for heavy and racing vehicles. Examples of rubber composition for these items include: drive belt: EPDM or CR based; synchronous belts: HNBR and CR based; hoses: SBR or EPDM based, or a mixture of NBR / PVC, epichlorohydrin or butyl; pneumatic shock absorbers: CR based; kinetic discs: CR or NR based; tires: thick part made up of various mixtures, NR, BRoSBR based. The invention has the advantage of being integrated into the recovery of non-food renewable raw materials. It allows for the recovery of lignin, currently a waste product of the timber and paper industries. This compound is completely harmless, has a low cost, and a high yield. Its use in this context does not constitute any competition for the food market and is not subject to regulations on chemical products. It is an agricultural resource. The invention will now be described in more detail with the help of the embodiments taken into consideration as non-limiting examples. Part I. Preparation of the formula comprising a lignosulfonate salt and an epoxy hardener (example of two components). The crosslinking or firing of a thermoset material—that is, the formation of a three-dimensional covalent network resulting in a reaction product—is accompanied by the release of heat. Therefore, differential scanning calorimetry (DSC) is conventionally used to characterize the crosslinking of a thermoset material. This is achieved by subjecting an unfired thermoset to a controlled temperature ramp, followed by an analysis of the location, size, and shape of the resulting exothermic peak. A few grams of sodium lignosulfonate (Arbo N18; Tembec N18) and an epoxy hardener (1,4-butanediol diglycidyl ether) are homogenized for 2 minutes in an aluminum beaker under a fume hood at room temperature. The mass ratio of lignosulfonate salt to epoxy hardener is exactly 1. A few milligrams of this mixture are then sealed into an aluminum crucible 43 mm in diameter and 12 mm deep. The sample is then placed in the METTLER TOLEDO DSC 3+ STAR® SYSTEM and subjected to a temperature ramp from 25 to 300°C at a rate of 10°C per minute under a nitrogen flow rate of 80 mL per minute. The total enthalpy change to which the sample is subjected is recorded by integrating the surface under the exothermic peak using STAR SW 14.00 software, and then normalized to Jg·1. The firing temperature in °C, where the crosslinking kinetics are strongest, is measured at the maximum peak (peak max).) of the exothermic peak with an accuracy of + / - 1°C. The same method is applied to produce other compositions containing 2,2-bis(4-hydroxyphenyl)propane diglycidyl ether; diglycidyl 1,2-cyclohexanedicarboxylate; 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate; 1,6-hexanediol diglycidyl ether; diglycidyl glycerol ether; triglycidyl glycerol ether; mixture of diglycidyl glycerol ether and triglycidyl glycerol ether marketed by Raschig under product reference GE100; novolac-type epoxy resin marketed by Huntsman under product reference Araldite®PZ 323. The same method is applied to produce other samples that contain only sodium lignosulfonate. The same method is applied to produce other samples that contain only the epoxy hardener. Table 1 Exothermic variation (in % vs. lignosulfonate salt control) Lignosulfonate salt / hardener ratio 1 0 1,4-Butanediol diglycidyl ether 1129 0 2,2-Bis(4-Hydroxyphenyl)propane diglycidyl ether 1079 0 1,2-Cyclohexanedicarboxylate diglycidyl ether 1058 0 3,4-Epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate 957 0 1,6 Hexanediol diglycidyl ether 1134 0 Glycerol diglycidyl ether 1199 0 Glycerol triglycidyl ether 1100 0 GE 100 993 33 Araldite® PZ 323 595 0 froofrnn / zznz / E / YiAi The variation in exothermic energy measured for the control sample containing only lignosulfonate is normalized to 100%. Compositions containing only an epoxy hardener (lignosulfonate salt / hardener mass ratio of 0) exhibit zero or low exothermic variations, between 0 and 33% relative to the lignosulfonate salt control. Compositions containing sodium lignosulfonate and an epoxy hardener (lignosulfonate salt / hardener mass ratio of 1) exhibit exothermic energy variations of between 595 and 1199% relative to the lignosulfonate salt control. This high exothermic variation relative to the control is characteristic of the crosslinking or "cooking" phenomenon of a thermoset material. The role of the epoxy hardener in the lignosulfonate is clearly evident here. Examples: Part II: Examples of adhesive formula preparation The definitions and measurement or control methods described in this part are generally applicable to the demand, unless otherwise specified. The dry extract (or mass concentration) of the preparations is defined as the percentage of residual dry matter after the evaporation of volatile matter (water, solvent) according to a defined drying method. The analysis is performed using a desiccator balance on a moist sample with a mass (rmmue) between 2 and 5 grams. The sample is placed in a pre-weighed aluminum beaker containing a binderless glass fiber filter with a surface density of 52 g / m² and a threshold of 1.6 µm. The assembly is heated to 120 °C until the mass stabilizes completely. The result is expressed as a percentage. The viscosity of the preparation is measured at 23°C using a Brookfield viscometer. Unless otherwise specified, the measurement is performed using an ULA module (ultra-low viscosity adapter) and a No. 1 mobile (low viscosity system) at a speed of 60 rpm (revolutions per minute). The pH of the aqueous preparations is measured using a METLER 340 pH meter, calibrated for measurements in a basic medium using buffer solutions. A glass electrode and 3M KCl electrolyte are used. Unless otherwise stated, the water used for the manufacture of the preparations is reverse osmosis quality water, with a residual conductivity of less than 70pS / cm. Example C.II-1: Preparation of an adhesive based on sodium lignosulfonate and an epoxy hardener In a first embodiment of the invention, 64.2 g of sodium lignosulfonate (Arbo N18; Tembec) are dissolved with stirring in 1184 g of water. Then, 2.5 g of a 10% by mass sodium hydroxide solution are added to the solution, which is kept under stirring for 10 minutes to allow complete solubilization. This solution is added with stirring to 983 g of a styrene-butadlene-vinylpyridine copolymer latex (VPSBR). The mixture is kept under stirring (150 rpm) during the hardener preparation phase. Take 35 g of GE100 and shake vigorously (300 rpm) with 230 g of water. Add this solution to the lignosulfonate and latex preparation. Continue stirring for a few minutes until homogenization is complete. The preparation has a pH of 10.8, a dry extract (solids content) of 19.43% and a viscosity of 2.45 mPa-s. The same method was applied to produce 2 other compositions by varying the following parameters: Hardener / lignosulfonate salt mass ratio: from 56% to 116%. Mass ratio of [lignosulfonate salt + hardener] / latex: 18% to 21%. % by mass of dry latex in the composition: from 80 to 84%. In total, 3 compositions were prepared. Example C.II-2: second form of preparation of a sodium lignosulfonate adhesive and an epoxy hardener In a second embodiment of the invention, 34.8 g of sodium lignosulfonate are introduced into a container and 782 g of water are gradually added. The solution is stirred at 200 rpm. Then, 30 g of a 10% by mass sodium hydroxide solution and 100.7 g of a 20% by mass ammonia solution are successively added to the preparation with stirring. The mixture is stirred at 200 rpm for 10 minutes. The basic sodium lignosulfonate solution is added with stirring to a latex preparation of a styrene-butadiene copolymer (SBR wet latex; 946 g) and 157 g of previously homogenized water. 75.5 g of GE100 are vigorously shaken (300 rpm) and 383.75 g of water are added. This emulsion is immediately added, with stirring, to the lignosulfonate and latex preparation. Stirring is continued for a few minutes until homogenization is complete. The preparation has a pH of 12.2, a dry extract of 19.9% ​​and a viscosity of 2.7 mPa-s. The same method was applied to produce another composition by varying the following parameters: Hardener / lignosulfonate salt mass ratio: from 217% to 218%. Mass ratio of [lignosulfonate salt + hardener] / latex: 21% to 29%. % by mass of dry latex in the composition: from 78 to 82%. In total, 2 compositions were prepared. Example C.II-3: third preparation form for preparing an adhesive based on sodium lignosulfonate and an epoxy hardener froofrnn / zznz / E / YiAi In a third embodiment of the invention, a basic sodium lignosulfonate solution is prepared by dissolving 19 g of sodium lignosulfonate with stirring in 955 g of water and adding 19 g of a 10% by mass sodium hydroxide solution. The preparation is stirred at 200 rpm for 10 minutes to allow complete solubilization. A basic latex dispersion is prepared by introducing 167 g of water into a container, which is stirred at 200 rpm. Then, 1049 g of a styrene-butadiene copolymer (SBR) latex and 25 g of a 20% by mass ammonia solution are successively introduced. The basic lignosulfonate solution is then added to the latex dispersion with stirring. 49 g of GE100 are vigorously shaken (300 rpm) and 216 g of water are added. This solution is immediately added, with stirring, to the lignosulfonate and latex preparation. Stirring is continued for a few minutes until homogenization is complete. The preparation has a pH of 12.25, a dry extract of 18.33% and a viscosity of 2.25 mPa-s. The same method was applied to produce 2 other compositions by varying the following parameters: Hardener / lignosulfonate salt mass ratio: from 255% to 516%. Mass ratio of [lignosulfonate salt + hardener] / latex: from 16% to 46%. % by mass of dry latex in the composition: from 68 to 86%. In total, 3 compositions were prepared. Example C.II-4: fourth form of preparation of an adhesive based on potassium lignosulfonate and an epoxy hardener. In this preparation, 94.5 g of an aqueous solution of potassium lignosulfonate and 63.7 g of GE100 are mixed. Then, 1794.8 g of water are poured over the mixture with vigorous stirring. Next, 33 g of a 10% by mass sodium hydroxide solution and 166.6 g of a 20% by mass ammonia solution are successively added to the preparation with stirring. The mixture is left to stir for 10 minutes, and then a chloroprene latex (CR wet latex; 1004 g) in water (176 g) is added with stirring. The preparation has a pH of 12.69, a dry extract of 19.58% and a viscosity of 2.45 mPa-s. The same method was applied to produce 2 other compositions by varying the following parameters: Hardener / lignosulfonate salt mass ratio: from 33% to 134%. Mass ratio of [lignosulfonate salt + hardener / latex]: 20% to 47% % by mass of dry latex in the composition: 65 to 79%. In total, 3 compositions were prepared. Example C.II-5: fifth form of preparation of an adhesive based on potassium lignosulfonate and an epoxy hardener. In this preparation, 94.5 g of an aqueous solution of potassium lignosulfonate and 63.7 g of GE100 are mixed. Then, 1794.8 g of water are poured over the mixture with vigorous stirring. Next, 33 g of a 10% by mass sodium hydroxide solution and 166.6 g of a 20% by mass ammonia solution are successively added to the preparation with stirring. The mixture is left to stir for 10 minutes, and then a dispersion of chloroprene latex (CR wet latex; 1004 g) in water (176 g) is added with stirring. Take 1306 g of this preparation and dilute it with stirring in 996 g of water. Then, successively add 36 g of a 55% by mass aqueous zinc oxide dispersion, 78 g of a 35% by mass aqueous carbon black dispersion, and 83 g of an adhesion promoter (blocked isocyanate) with moderate stirring. The preparation has a pH of 12.32, a dry extract of 14.1% and a viscosity of 1.95 mPa-s. The same method was applied to produce 2 other compositions by varying the following parameters: Hardener / lignosulfonate salt mass ratio: 33% to 135% Mass ratio of [lignosulfonate salt + hardener] / latex: 20% to 47% % by mass of dry latex in the composition: 48 to 59% In total, 3 compositions were prepared. The compositions of these examples are used in the Part relating to the treatment of the reinforcing textile. Part III - Treatment of the reinforcing textile The definitions and measurement or control methods described in this part are generally applicable to the application, unless otherwise specified. The mechanical characteristics of the treated textiles, such as tensile strength at break, elongation at break, shrinkage, temperature shrinkage, shrinkage (steam shrinkage), temperature shrinkage force, linear weight, loading rate (dip collection; DPU), stiffness, etc., are measured in accordance with current standards in the textile industry. In the context of the present invention, it has been verified that the new treatments do not lead to any modification of these properties, compared to the standard RFL. The adhesive preparations of the invention are evaluated by their adhesion performance. After coating the textile, it is placed in an unvulcanized rubber matrix, ensuring that the textile surface in contact with the rubber remains free of any contamination. Subsequently, the matrix containing the textile is vulcanized by compression, according to the specific temperature, time, and pressure conditions for each rubber. The textile and vulcanized matrix assembly forms an adhesion test piece. Adhesion test specimens can take various forms, described in several international standards, such as ISO 36:2017. The test specimens, and by extension the test performed to determine adhesion, are commonly known to technicians in the field by names such as T-Test (“pull-out test”, ASTM D2229-04), H-Test (according to NF ISO 4647 or ASTM D4776-04), peel test, etc. The test is then performed by tensioning the specimen until the interfacial contact zone is destroyed, the fabric tears, or the rubber matrix tears. Adhesion is then evaluated according to criteria such as the appearance of the textile at break, the maximum adhesion strength, and the average tear strength, possibly reduced to the thickness of the test specimen. General information on impregnation methods In general, the impregnation method for textiles is carried out by immersion (soaking) in tanks containing adhesive preparations. A scheme of such a method is illustrated in Gomes A., Nabih N., Kramer T., Adhesion activation of tire textiles by resorcinol formaldehyde free coatings, Rubber World, March 2016. The untreated spool(s) of yarn, cord, and cable can be placed on a creel at the line inlet. An accumulator system can be used as an option. The yarn, cord, and cable can be immersed directly in a tank or impregnated with an applicator roller for application of the bonding compound. After immersion or impregnation, the excess wet compound is preferably removed, for example, by pressing (mordant impregnation), suction, or foaming. The adhesive composition is then dried and / or cross-linked. The coated, impregnated textile can be placed in an oven to allow for drying and cross-linking of the adhesive composition. After removal from the oven, the textile can undergo another impregnation step and then be placed in another oven. These steps can be repeated, up to a total of four impregnations (two, three, or four). Upon exiting the line, the yarns, cords, or cables can be wound onto winders. In another impregnation method, particularly suitable for mineral fibers (glass, basalt, carbon, etc.), a bypass system consisting of a comb and / or flexible connecting cable can be used at the creel outlet. This allows for maximum opening of the multifilament yarn, promoting complete impregnation. After the impregnation and drying and / or crosslinking steps, the yarn is twisted in-line. Cable formation is preferably carried out on a pre-treated yarn. Additional treatment processes can be performed on the cables formed in this way. In the various methods, the speeds can range from 1 m / min to 150 m / min, and the oven temperatures from 30°C to 350°C, more specifically from 100°C to 300°C, and even more specifically from 140°C to 220°C. Mechanical tension can also be applied to the textile. Unless otherwise stated, in the following examples, the textiles were treated with the adhesive compositions of the invention under conditions identical to those applied during treatment with an RFL (Reactive Fiber Layout). Example 111-1: treated polyamide 4-6 reinforcement for straps In an example of preparing the invention, the inventors set out to present a solution that could be used as reinforcement in assemblies such as transmission belts or conveyor belts. For this purpose, a PA 4-6 cable with a 470 / 5x3 dtex (100 / 125) construction was constructed using successive twisting and subsequent stranding steps. The resulting cable was treated by first impregnation in a solution of diphenyl methylene diisocyanate in toluene, followed by drying and heat setting in an oven. Subsequently, the cable was impregnated in a tank containing the adhesion composition (the adhesive) of the invention, at a dry matter concentration of 20%, instead of the commonly applied RFL treatment. The adhesion of the different yarns impregnated with the various adhesives obtained to a peroxide-accelerated EPDM (ethylene propylene-diene monomer)-based mixture was evaluated. The test pieces were manufactured by compression molding. A yarn impregnated with RFL, produced under the same conditions, provided the control adhesion values.The adhesion values ​​obtained are presented in Table 2, and are expressed as % adhesion in relation to the adhesion obtained with the control RFL thread. Example 111-2: Reinforcement of treated glass for profiles In an example of preparing an invention, the inventors intended to present an invention that can be used as reinforcement in profiles and seals, such as window or door seals. Such reinforcements are manufactured from glass fibers containing a fiberglass sizing with which the adhesive composition must be compatible. For this purpose, several 136tex E-glass yarns were subjected to a diversion and impregnation process in a tank containing the adhesion composition (the adhesive) of the invention, instead of the RFL (Refined Fiberglass). In this example, adhesives with a mass concentration of 20% were evaluated. The impregnated yarns were then subjected to a drying and heat-setting process in an oven. Upon removal from the oven, the yarns were twisted to impart a twist of 135 turns / meter in the Z direction. Three impregnated twists were then stranded in one direction at a level of 135 turns / meter. The various yarns impregnated with the different adhesives obtained were evaluated for adhesion to an EPDM rubber compound, conventionally implemented in the extrusion operation. The test pieces were manufactured by compression molding.A yarn impregnated with RFL, produced under the same conditions, allowed for obtaining the control adhesion values. The adhesion values ​​obtained are presented in Table 2 and are expressed as a percentage of adhesion relative to the adhesion obtained with the control RFL yarn. Example III-3: treated polyethylene terephthalate reinforcement for hoses In another example of preparing the invention, the inventors set out to present a solution that can be used as braided, coiled, wrapped, or woven reinforcement in a brake hose. Example 111-3 (a): A 90° Z twist was applied to a polyethylene terephthalate (PET) yarn with a tensile strength of 1100 dtex. The resulting yarn was treated by impregnation with the adhesive composition of the invention, followed by heat setting in an oven. The adhesives used in this example have a dry matter or solids concentration of 20%. The adhesion of the various adhesive-impregnated yarns to a peroxide-accelerated EPDM rubber compound, commonly used in brake hoses, was evaluated. froofrnn / zznz / E / YiAi The test pieces were manufactured by compression molding. A yarn impregnated with RFL, produced under the same conditions, was used to obtain the control adhesion values. The values ​​obtained are presented in Table 2 and are expressed as a percentage of adhesion relative to the adhesion obtained with the control RFL yarn. Example III-3 (b): In another example, an 830 / 2x3 dtex construction cable was constructed by successive twisting and stranding steps. The resulting cable was treated by first impregnation in a methylene diphenyl diisocyanate solution in toluene, followed by drying and oven heat setting. The adhesive compositions used in this example have a dry matter or solids concentration of 20%. The adhesion of the different yarns impregnated with the adhesive to a CR-based rubber compound was evaluated. The test pieces were manufactured by compression molding. A yarn impregnated with RFL, produced under the same conditions, provided control adhesion values. The values ​​obtained are presented in Table 2 and are expressed as a percentage of adhesion relative to the adhesion obtained with the control RFL yarn. froofrnn / zznz / E / YiAi Table 2 Adhesive Compositions C. 11-1 C. II-2 C. II-3 C. II-4 Epoxy Hardener GE100 XXXX Lignosulfonate Sodium Lignosulfonate XXX Potassium Lignosulfonate X Latex VP-SBR X SBR XX CR X Additives Total weight of theoretical dry extract (%) 20 20 20 20 Adhesion test (in % vs. RFL control) Example 111-1 (PA 4-6) 89 to 98 Example III-2 (Fiberglass) 72 to 77 Example III-3 (a) (PET) 131 to 155 Example III-3 (b) (PET) 100 to 115 The polyamide 4-6 cable from Example 111-1, treated with the different adhesives from Example C.11 1, showed satisfactory levels of adhesion to EPDM compared to the control yarn impregnated with RFL. The adhesion levels obtained, as well as the observation of the fracture patterns, show that the adhesives evaluated are compatible with the first impregnation applied to the textile. The fiberglass cable of Example III-2 treated with the different adhesives of the examples C.II-2 showed satisfactory adhesion levels to EPDM compared to the RFL-impregnated control yarn. Although the adhesion levels obtained with RFL were lower than those achieved with EPDM, they were sufficient to ensure effective application performance. The adhesion levels obtained, along with the observed fracture patterns, demonstrate that the evaluated adhesives are compatible with the glass sizing process. Furthermore, the glass fibers treated in this manner showed no visual damage and did not cause excessive fouling on the processing lines. This demonstrates the ability of the evaluated adhesives to impart properties identical to those of RFL, including mechanical protection properties. The PET yarn of Example III-3(a), treated with the different adhesives from each of Example C.II-3, showed higher levels of adhesion to EPDM compared to the RFL-impregnated control yarn. The PET yarn of Example III-3(b), treated with the different adhesives from each of Example C.II-4, showed satisfactory levels of adhesion to the CR mixture compared to the RFL-impregnated control yarn. In conclusion, the results of these various tests clearly demonstrate that the adhesive compositions according to the invention constitute a very interesting alternative to the use of conventional RFL adhesive solutions containing formaldehyde and resorcinol.

Claims

1. An adhesive composition for textiles, comprising a lignosulfonate salt, an epoxy hardener of this salt, comprising at least two epoxy units, and an elastomeric latex.

2. The composition according to claim 1, wherein the lignosulfonate salt is a sodium, potassium, magnesium, ammonia or calcium lignosulfonate.

3. The composition according to any one of claim 1 or 2, wherein the hardener is selected from diglycidyl or polyglycidyl ethers of aliphatic polyols; diglycidyl or polyglycidyl ethers of polyfunctional phenols; polyglycidyl ethers of condensation products of phenols with formaldehyde obtained under acidic conditions; diglycidyl or polyglycidyl esters of aliphatic or aromatic polycarboxylic acids; compounds containing epoxycyclohexyl groups; polyepoxy compounds resulting from the epoxidation of an olefinicly unsaturated compound and mixtures thereof.

4. The composition according to claim 3, wherein the hardener is selected from the following compounds: 1,4-butanediol diglycidyl ether; 2,2-bis(4-hydroxyphenyl)propane diglycidyl ether; diglycidyl 1,2-cyclohexanedicarboxylate; 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate; 1,6-hexanediol diglycidyl ether; glycerol diglycidyl ether; glycerol triglycidyl ether; mixture of glycerol diglycidyl ether and glycerol triglycidyl ether; novolacy epoxy resins and mixtures thereof.

5. The composition according to any one of claims 1 to 4, comprising a carboxylated acrylonitrile / butadiene copolymer latex (XNBR), a hydrogenated acrylonitrile / butadiene latex (HNBR), a chlorosulfonated polyethylene latex (CSM), a styrene-butadiene-vinylpyridine copolymer latex (VPSBR), a styrene / butadiene copolymer latex (SBR), an acrylonitrile / butadiene copolymer latex (NBR), a polybutadiene latex (BR), a chlorobutadiene latex (CR), a natural rubber latex (NR), a polyurethane latex, or a mixture of at least two of the same.

6. The composition according to any of claims 1 to 5, wherein the dry matter mass content of the composition may be in particular between approximately 2 and approximately 38%, in particular between approximately 4 and approximately 30%, more particularly between approximately 7 and approximately 25%.

7. The composition according to any one of claims 1 to 6, comprising from approximately 40 to approximately 95%, preferably from approximately 55 to approximately 90% by weight of the elastomer, with respect to the composition.

8. The composition according to any one of claims 1 to 7, wherein the mass ratio of hardener to lignosulfonate salt is between approximately 0.01 and approximately 5, more particularly between approximately 0.03 and approximately 1, typically between approximately 0.05 and approximately 0.

5.

9. The composition according to any one of claims 1 to 8, wherein the mass ratio of [hardener + lignosulfonate salt] to latex is between approximately 0.05 and approximately 0.6, more particularly between approximately 0.15 and approximately 0.

5.

10. The composition according to any one of claims 1 to 9, having a neutral or basic pH, in particular a pH between approximately 7 and approximately 13, particularly between approximately 9 and approximately 13.

11. A kit for producing an adhesion composition according to any of claims 1 to 10, comprising a first composition comprising a lignosulfonate salt and an elastomer latex and a second composition comprising an epoxy hardener of the lignosulfonate salt, comprising at least two epoxy units.

12. The use of a composition or kit according to any of the preceding claims, for imparting adhesion properties to a reinforcing textile, with respect to a rubber.

13. A reinforcing textile, in particular yarn, cable or textile structure, at least partially coated and / or impregnated with an adhesion composition according to any of claims 1 to 10.

14. A rubber piece or comprising a rubber piece, wherein the rubber comprises at least one reinforcing textile according to the preceding claim, on the surface and / or integrated within the rubber.