Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • C08L33/04—Homopolymers or copolymers of esters
  • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
  • C08L33/08—Homopolymers or copolymers of acrylic acid esters
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
  • C08L83/04—Polysiloxanes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
  • D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L2203/00—Applications
  • C08L2203/12—Applications used for fibers

Definitions

• the field of the present invention is that of crosslinkable liquid compositions capable of being used to form a coating which makes it possible to provide a coating which makes it possible to provide a coating which makes it possible to provide a coating which makes it possible to provide a coating which makes it possible to provide a coating.
• the invention also relates to the use of such a composition for the treatment of these textile materials, as well as the treated textile materials.
• Textiles are porous materials that can very easily soak up liquids. If this impregnation is sought in certain applications (dyeing, absorbents), it may prove to be penalizing for certain aspects, one of them being the ability of the textile to stain on contact with certain liquids.
• the products used to give textiles oleophobic properties are fluorinated polyacrylates, in particular those sold by the company Dupont de Nemours.
• the main disadvantages of fluorinated polyacrylates are their price and the durability of the treatment. The loss of effectiveness over time of these treatments is attributed to phenomena of reorganization of the perfluorinated groups on the surface and to phenomena of desorption during washes. Hygiene and environmental problems result, which are all the more important as the quantity of perfluorinated groups is increased in an attempt to overcome the lack of durability.
• An objective of the present invention is therefore to provide a formulation and a treatment which make it possible to provide long-lasting oleophobia or hydrophobia to a large number of textile materials.
• the expression “textile material” designates: on the one hand, yarns, fibers and / or filaments made of synthetic, artificial and / or natural materials which are used for the manufacture of textile articles; and on the other hand the textile articles made from said yarns, fibers and / or filaments, comprising at least one textile surface and consisting for example of woven, non-woven and / or knitted articles, said "made-up textile articles” also encompassing much fabrics than clothes, such as jackets and pants, or technical fabrics.
• the expression “textile material” also designates materials whose basic texture is in fibrilar form such as in particular paper and leather.
• the first object of the invention is thus a crosslinkable liquid composition capable of crosslinking into a hydrophobic and / or oleophobic silicone elastomer coating, and preferably oleophobic and hydrophobic coating, and capable of being crosslinked in contact with a textile material (and / or of its constituent yarns, fibers and / or filaments) to form such a coating, comprising: A -at least one polyorganosiloxane resin (POS) having, per molecule, on the one hand at least two different siloxyl units chosen from those of types M , D, T, Q, one of the units being a unit T or a unit Q and on the other hand at least three hydrolysable / condensable groups of types OH and / or OR 1 where R 1 is a linear or branched alkyl radical in C-
• the proportion of polyacrylate can vary within wide limits. It can however be specified that the proportion by weight of polyacrylate on the sum of the dry components A, B ' and C can range from 1 to 99% by weight, in particular from 5 to 80% by weight, preferably from 10 to 60% by weight. weight. Good results have been obtained with approximately 50, 40 and 20% by weight.
• the composition comprises at least constituents A, B, D and F.
• the composition comprises at least constituents A, B, C, D and F.
• the composition comprises at least constituents A, B, C and F.
• the quantities used of constituents A to E can be as follows (the parts are given by weight): - per 100 parts of component A, from 0.5 to 200, preferably from 0.5 to 100 and more particularly from 1 to 70 parts of component B, - per 100 parts of component A, from 0 to 1000, preferably from 1 to 1000, more preferably from 1 to 300 parts of component C, - per 100 parts of component A, from 0 to 10 000, preferably from 1 to 10 000, better still from 1 to 5000 parts of component D and / or - for 100 parts of component A, from 0 to 100 parts of component E.
• the polyacrylates s fluorinated which can be homopolymers or copolymers, are compounds perfectly known to those skilled in the art.
• the polyacrylate can comprise groups Z having values of n varied, included in the abovementioned intervals.
• the polyacrylate comprises groups Z having values of n of between 3 and 12 (throughout the description, the limits of the intervals are included).
• the polyacrylate can comprise one or more polymer chain units derived from a (meth) acrylate monomer carrying one or more polar groups X; thus, the polymer can comprise one or more other units, for example one or more polar groups X such as for example amino, quaternary amine, alcohol, carboxylate (eg alkyl carboxylate), anionic group (eg anionic carboxylate, anionic alcoholate) groups ) having a counterion of ammonium, alkylammonium or alkali metal type, in particular Na or K, etc.
• polar groups X such as for example amino, quaternary amine, alcohol, carboxylate (eg alkyl carboxylate), anionic group (eg anionic carboxylate, anionic alcoholate) groups ) having a counterion of ammonium, alkylammonium or alkali metal type, in particular Na or K, etc.
• At least one fluorinated polyacrylate comprising, in any order, the repeated units appearing on the following formula (F),: - (CH 2 -CRZ) a - (CH 2 -CRY) b - (CH 2 -CRX) c - in which Z, Y and X are as defined above, R is H or CH 3 , a, b, c are integers such that a is greater than or equal to 1 while that c and d are each, independently of one another, greater than or equal to 0.
• the molecular weight of these fluorinated polymers can vary within wide limits, as is usually encountered. It can however be specified that the molecular weight can be between 50 and 1,000,000.
• the fluoropolymer can be in different forms, and in particular (i) either in an appropriate solvent, (2i) or in emulsion or in dispersion with an aqueous phase.
• the composition according to the invention may comprise, as additive D (i) at least one organic solvent or diluent and / or a non-reactive organofluorine compound; or (2i) water, at least one solvent or diluent organic and / or a non-reactive organofluorine compound and optionally at least one nonionic, ionic or amphoteric surfactant.
• the conventional organic solvents which can play the role of diluent, can be: + chlorinated solvents such as trichlorethylene, trichloroethane, perchloroetylene, perchloroethane, dichloromethane; + alkanols such as ethanol, isopropanol, butanol, octanol; + aliphatic ketones such as acetone, methyl ethyl ketone, methylbutyl ketone and cycloaliphatics such as cyclopentanone, cyclohexanone; + esters of non-fatty carboxylic acids and alkanols such as ethyl, butyl and pentyl acetate; + esters derived from C 10 to C 16 saturated fatty acids, preferably C 12 to C 14 and alkanols such as myristates (C- ⁇ 4 ), laurates (C 12 ) and mixtures; + ethers-oxides such as
• the polyacrylates can be produced according to the process of synthesis by telomerization of the company ATOFINA which makes it possible to obtain, from tetrafluoroethylene perfluorinated chains CnF2n + ⁇ comprising on average at least 8 carbon atoms and 17 atoms fluorine. These perfluorinated chains are then functionalized at one of their ends by an alcohol function, then grafted onto an acrylic monomer structure by a simple esterification reaction. The other functional groups described above are also grafted onto an acrylic monomer and the polymerization of this makes it possible to obtain extremely varied structures of fluorinated acrylic resins.
• the crosslinkable liquid composition according to the invention makes it possible: by crosslinking around the yarns, fibers and / or filaments constituting the textile material, to ensure wide protection coverage of the textile material, protection not very dependent on the nature of said material because it requires little or no anchor points; by making a chemically crosslinking silicone sheath, ensuring lasting protection of the textile material by giving it excellent resistance to attack encountered during use; by the term "durable protection” is meant to define protection on the one hand against the constraints imposed by textile processes such as in particular heat-setting treatments, dyeing treatments, and on the other hand vis-à-vis aggressions suffered during the life of the textile material (for example a garment) such as in particular abrasion when worn, washing in an aqueous detergent medium, dry cleaning in a solvent medium; forming coatings with oleophobicity and hydrophobicity properties; and - due to the special nature of the constituents of the formulation, to carry out the operations of depositing the liquid formulation and of its crosslinking at any point in the preparation and / or
• a second object of the present invention is the use of the compositions according to the invention, for treating a textile material and giving it lasting oleophobicity and / or hydrophobicity properties. According to a preferred method, this treatment gives the textile material lasting oil and water repellency properties. Durability can be assessed by comparing the properties of oil resistance, for oleophobia, and water repellency, for hydrophobicity, before and after washing the treated material.
• the beading effect obtained preferably corresponds to a note of 4, better still to a note of 5.
• durability of this effect it is meant that, preferably, after the washing treatment, the note remains higher or equal to 3.
• the resistance to oil preferably corresponds to a score of between 3 and 8.
• the constituents A which can be used, separately or as a mixture, are advantageously conventional film-forming resins among which there may be mentioned: A-1: at least one organosilicon resin prepared by cohydrolysis and cocondensation of selected chlorosilanes in the group consisting of those of formulas (R 3 ) 3 SiCI, (R 3 ) 2 Si (CI) 2 , R 3 Si (CI) 3 , Si (CI) 4 .
• organosilicon resin prepared by cohydrolysis and cocondensation of selected chlorosilanes in the group consisting of those of formulas (R 3 ) 3 SiCI, (R 3 ) 2 Si (CI) 2 , R 3 Si (CI) 3 , Si (CI) 4 .
• These resins are well known and commercially available branched organopolysiloxane oligomers or polymers.
• these resins are not completely condensed and they still have approximately from 0.001 to 1.5 OH and / or alkoxyl OR 1 groups per silicon atom; the radicals R 3 are identical or different and are chosen from linear or branched alkyl radicals C ⁇ - C ⁇ , alkenyl radicals C2 - C4, phenyl, trifluoro-3,3,3 propyl.
• alkyl radicals R 3 examples include methyl, ethyl, isopropyl, tert-butyl and n-hexyl radicals; as examples of branched organopolysiloxane oligomers or polymers, mention may be made of MQ resins, MDQ resins, TD resins and MDT resins, OH and / or OR 1 groups which may be carried by the units M, D and / or T , the content by weight of OH and / or OR 1 groups being between 0.2 and 10% by weight;
• A-2 at least one mixed resin prepared by cocondensation of the organosilicon resins A-1 mentioned above with usual organic polymers such as: polyester and alkyd resins modified or .not by fatty acids such as oleic, linoleic or ricinoleic acid or esters of fatty acids and aliphatic polyols such as castor oil, tallow; epoxy resins modified or not by fatty acids; phenol
• mixtures A-3 - of at least one resin of type A-1 (resin A-1/1) having, in its structure, at least two siloxy units different ones chosen from those of formula (R 3 ) 3 SiO 0 5 (unit M), (R 3 ) 2 SiO (unit D) and R 3 SiO. 5 (motif T), at least one of these motifs being a motif T, the OH and or OR 1 groups which can be borne by the units M, D and / or T and the content by weight of OH and / or OR 1 groups being between 0.2 and 10% by weight, and
• At least one other resin of type A-1 (resin A-1/2) having, in its structure, at least two different siloxy units chosen from those of formula (R 3 ) -SiO 0 5 (unit M) , (R 3 ) -SiO (motif D) and R 3 SiO. - (unit T) and Si0 2 (unit Q), at least one of these units being a unit Q, the groups OH and / or OR 1 being able to be carried by the units M, D and / or T and the content by weight in OH and / or OR 1 groups being between 0.2 and 10% by weight.
• mixtures A-3 may be cited: of at least one hydroxylated MDT resin having a content by weight of OH group of between 0.2 and 10% by weight, and
• At least one hydroxylated MQ resin having a content by weight of OH group of between 0.2 and 10% by weight.
• the respective proportions of the constituents are not critical and can vary within wide limits. These mixtures contain for example from 60 to 90% by weight of resin (s) A-1/1 and from 40 to 10% by weight of resin (s) A-1/2.
• the constituents B-1 there may be mentioned, as examples of symbols R 2 in the organic derivatives of metal M of formula (I), the radicals: methyl, ethyl, propyl, isopropyl, butyl, isobutyl , hexyl, 2-ethyl hexyl, octyl, decyl and dodecyle.
• alkyl titanates such as ethyl titanate, propyl titanate, isopropyl titanate, butyl titanate, ethyl titanate, 2 hexyl, octyl titanate, decyl titanate, dodecyl titanate, ⁇ -methoxyethyl titanate, ⁇ -ethoxyethyl titanate, ⁇ -propoxyethyl titanate, titanate of formula Ti [(OCH 2 CH 2 ) OCH 3 ] 4 ; alkyl zirconates such as propyl zirconate, butyl zirconate; alkyl silicates such as methyl silicate, ethyl silicate, isopropyl silicate, n-propyl silicate; and mixtures of these products.
• alkyl titanates such as ethyl titanate, propyl titanate, isopropyl titanate, butyl titanate, ethyl titanate, 2 hexy
• polyalkoxides B-2 which are preferred, originating from the partial hydrolysis of titanates, zirconates and silicate monomers, can be cited: polytitanates B-2 originating from the partial hydrolysis of isopropyl, butyl titanates or 2-ethyl hexyl; polyzirconates B-2 originating from the partial hydrolysis of propyl and butyl zirconates; polysilicates B-2 from the partial hydrolysis of ethyl and isopropyl silicates; and mixtures of these products.
• constituents B-3/1 which are preferred, there may be mentioned the organosilanes optionally alkoxylated chosen from the products of the following general formula:
• R 4 , R 5 , R 6 are hydrogenated or hydrocarbon radicals identical or different from each other and preferably represent hydrogen, a linear or branched C-1-C4 alkyl or a phenyl optionally substituted by at least one C1-C3 alkyl,
• - U is a linear or branched C-1-C4 alkylene, or a divalent group of formula -CO-O-alkylene- where the alkylene residue has the definition given above and the free valence on the right (in bold) is linked to the If via W,
• vinyltrimethoxysilane or ⁇ - (meth) acryloxypropyltrimethoxysilane is a particularly suitable compound B-3/1.
• components B-3/2 which are preferred, there may be mentioned the tris [(trialkoxysilyl) alkyl] isocyanurates where the alkyl groups contain from 1 to 4 carbon atoms and the organosilicon compounds chosen:
• R 9 is a linear or branched C1-C4 alkyl radical
• R 10 is a linear or branched alkyl radical
• + y is equal to 0, 1, 2 or 3, preferably to 0 or 1 and, more preferably still to 0, + where X has the meaning
• R 11 , R 12 , R 13 which are identical or different radicals representing hydrogen or a linear or branched C-1-C4 alkyl, hydrogen being more particularly preferred, + R 11 and R 12 or R 13 which can alternately constitute together and with the two carbons carrying the epoxy, an alkyl ring having from 5 to 7 links, - either from the products B-3/2-b constituted by epoxyfunctional polydiorganosiloxanes comprising: (i) at least one siloxyl unit of formula: XpGqSiO 4. ( p + ⁇ (B-3/2-b) in which:
• + X is the radical as defined above for the formula (B-3/2-a)
• the compounds B-3/2 are preferably tris [3- (trimethoxysilyl) propyl] isocyanurates and epoxyalkoxymonosilanes B-3/2-a.
• compounds B-3/2-a there may be mentioned: + 3-glycidoxypropyltrimethoxysilane (GLYMO) + 3,4-epoxycyclohexylethyltrimethoxysilane.
• the following titanates, zirconates and silicates B-1 are used more preferably, taken alone or as a mixture between them: ethyl titanate, propyl titanate, isopropyl titanate, butyl titanate (n-butyl), propyl zirconate, butyl zirconate, ethyl silicate, propyl silicate and isopropyl silicate.
• B-1 + B-3/1 or B-1 + B-3/2 the weight proportions of B-1 relative to the total B-1 + B3 / 1 or B-3/2 are notably from 5 to 100%, preferably from 8 to 80%.
• B-1 + B-3/1 + B-3/2 the weight proportions between B-1, B-3/1 and B-3/2, expressed in percentages by weight relative to the total of the three, are the following: B-1> 1, preferably between 5 and 25, B-3/1> 10, preferably between 15 and 70, B-3/2 ⁇ 90, preferably between 70 and 15, it being understood that the sum of these proportions in B-1, B-3/1, B-3/2 is equal to 100%.
• Component C has functions allowing it to cling to the silicone sheath and FH functions which confer hydrophobic properties on the textile material treated.
• the constituents C-1 which can be used, separately or as a mixture, are silanes, essentially linear POSs and POS resins carrying in their molecules, attached to silicon atoms, the two functionalities FA and FH.
• FA functions are more specifically condensable / hydrolyzable functions corresponding to OH and / or OR 1 or functions capable of generating in situ OH functions and / or OR 1.
• the FH functions can comprise any known hydrophobic group or any combination of known hydrophobic groups.
• these groups are chosen from the following methods: alkyl groups, silicone groups, fluorinated groups and their various combinations. These groups can also develop softness properties.
• these groups are siloxane sequences comprising M, D and / or T units, preferably those defined above with regard to the constituents A-1.
• these groups are linear or branched C1 to C50 alkyl sequences, in particular from C1 to C30.
• these groups are fluorinated groups of general formula: -Z - (- R F ) k in which: + Z represents a divalent or trivalent ball joint of a hydrocarbon nature, which can be linear or branched, a cyclic residue or not, saturated or unsaturated aliphatic, aromatic, mixed aliphatic / aromatic, and which may contain one or more oxygenated heteroatoms containing from 1 to 30 carbon atoms, + k is 1 or 2, + R F represents the group -C 3 F 2s -CF 3 with s equal to or different from zero or the group C s F 2s H with s equal to or greater than 1.
• constituents C-1 which are preferred, the following organosilicon compounds may be mentioned listed:
• + the substituents R 18 identical or different, each represent a monovalent hydrocarbon radical saturated or not with C-
• constituents C-1 which are very suitable, there may be mentioned the hydroxylated MDT resins having a content by weight of OH group of between 0.2 and 10% by weight, taken alone or as a mixture with hydroxylated silicone oils of formula ( III).
• proportions of use of the constituents C-1 they are, as explained above, in the range going from 1 to 1000 parts by weight of constituent C-1 according to the desired FH, per 100 parts in weight of component A. For example, in the case where FH provides hydrophobicity, then generally 2 to 30 parts by weight of component C-1 are used.
• A is a POS resin equipped with motif (s) T and possibly M and / or possibly D, it should be understood that this resin can then also play the role of functional additive C-1 for water repellency, provided that it is engaged in sufficient proportions equal to the sum of the proportions corresponding to the set A + C-1.
• the constituents C-2 which can be used, separately or as a mixture, are hydrocarbon compounds carrying in their molecule, attached to carbon atoms, the two functionalities FA and FH.
• FA functions are more specifically condensable / hydrolyzable functions corresponding to OH and / or OR 1 or functions capable of generating in situ OH functions and / or OR 1.
• constituents C-2 which are preferred, mention may be made of fluorinated alcohols, preferably perfluorinated, of formula: R 19 - OH (IV) where R 19 represents an aliphatic radical, linear or branched, having from 2 to .20 atoms. of carbon, said carbon atoms being substituted by at least one fluorine atom and optionally by at least one or hydrogen atom.
• R 19 represents an aliphatic radical, linear or branched, having from 2 to .20 atoms. of carbon, said carbon atoms being substituted by at least one fluorine atom and optionally by at least one or hydrogen atom.
• R F perfluorinated alcohols of formula R F - (CH 2 ) m -OH where R F is as defined above and m is a number ranging from 0 to 10.
• constituents C-2 are, as explained above, in the interval ranging from 1 to 1000 parts by weight of constituent C- 2, per 100 parts by weight of constituent A.
• the constituent (s) D include the compounds required by the implementation of the silicone formulation and of the polyacrylate and / or for diluting the composition suitably in order to allow the composition to be applied to the textile.
• the composition may for example comprise a constituent D, in particular a solvent, promoting the mixing between the silicone formulation proper and the polyacrylate or the polyacrylate formulation.
• optional components D which are preferred, the following compounds can be cited, in addition to water:
• auxiliary components E having the same meanings as those given above for component A, but which this time are free from any functional group of OH and / or OR 1 types.
• resins which can be used mention may be made of MQ, MDQ, TD and MDT resins.
• optional auxiliary components E which are preferred, the following compounds may be cited:
• - polycondensation catalysts which are compounds of a metal generally chosen from tin, titanium and zirconium; it is thus possible to use the monocarboxylates and the dicarboxylates of tin such as 2-ethyl hexanoate of tin, dibutyltin dilaurate, dibutyltin diacetate, tin chelates of valence IV hexacoordines, etc., such as those described in EP-A-0 367 696;
• + metallic powders such as zinc, aluminum, magnesium powder
• + oxides such as silica, ground quartz, alumina, zirconium oxide, titanium, zinc, magnesium, iron, cerium, lanthanum, praseodymium, neodymium oxides
• + silicates such as mica, talc, vermiculite, kaolin, feldspar, zeolites
• + pigments such as phthalocyanines, chromium oxides, sulfide and cadmium sulfoselenides.
• organic or polymeric particles crosslinked or not;
• liquid silicone formulations used, in the context of the present invention, as textile coating bases are prepared by simple mixing at room temperature, and in any order of introduction, of the constituents A,
• the committed quantities are defined as indicated above.
• the order of incorporation of the constituents can be arbitrary, but it is however preferable, to avoid any risk of precipitation of solid products or of gel formation, to add the constituent A in the form of a solution in the constituent D solvent / diluent or in the form of an aqueous emulsion / dispersion when component D comprises water.
• the introduction and intimate mixing of the optional fillers E, when used, with the constituents A, B, C and optionally D are carried out using the conventional methods used by the manufacturers of textile formulations. It is possible to use, for example, roller mills or turbine mills.
• the polyacrylate part is very often presented in the form of a solution of fluorinated polyacrylate in one of the solvents mentioned above or in the form of an emulsion of this same fluorinated polyacrylate.
• the final composition can be prepared by simple mixing of the silicone formulation proper and of the fluorinated polyacrylate composition.
• a third solvent can be used to facilitate mixing.
• the compositions according to the invention have the advantage of hardening by simple air drying for a time interval which can range from a few tens of minutes to several hours or, if necessary, several tens of hours. This time can be accelerated by heating to a temperature in the range of
• compositions according to the invention have excellent storage stability and can be used in all textile applications requiring the presence, after curing, of durable coatings with very high physical characteristics.
• the compositions according to the invention can be prepared in concentrated form (for example, for 100 parts by weight of component A, from 0 to 100 parts of component D), then be diluted at the time of their use with an organic diluent, an organic solvent or water in a proportion of 1 to 30 parts by weight of formulation per 100 parts by weight of solvent, diluent or water.
• the amount of composition according to the invention, deposited on the textile article corresponds to an amount of between 0.1 and 20% by weight relative to the weight of the dry textile article treated.
• the use in accordance with the present invention can be implemented directly on textile articles made from yarns, fibers and / or filaments, comprising at least one textile surface and consisting for example of woven, non-woven and / or knitted articles, operating at any time in the preparation (for fabrics) and / or renovation and / or maintenance (for clothing) of the textile material.
• textile surface is meant a surface obtained by assembling yarns, fibers and / or filaments by any process such as, for example, gluing, felting, weaving, braiding, flocking, or knitting.
• the yarns, fibers and / or filaments used in the manufacture of these textile articles can be obtained from the transformation of a synthetic thermoplastic matrix consisting of at least one thermoplastic polymer chosen from the group consisting of: polyamides, polyolefins, polyvinylidene chlorides, polyesters, polyurethanes, acrylonitriles, (meth) acrylate-butadiene-styrene copolymers, their copolymers and mixtures.
• the thermoplastic matrix can include additives, such as pigments, delustrants, matifiers, catalysts, heat and / or light stabilizers, anti-bacterial, anti-fungal, and / or anti-mite agents.
• the yarns, fibers and / or filaments can also be derived from natural materials such as in particular cotton, linen, wool, according to the transformation methods known to those skilled in the art. Of course, mixtures of synthetic and natural materials can be used.
• conventional techniques are used in the textile industry, in particular by making use of the so-called "padding" impregnation technique. ).
• Alternative techniques can also be used such as techniques known as a licking roller, or simply by spraying.
• the yarns, fibers and / or filaments can also be brought into contact with the composition according to the invention at any time during the processes for preparing the textile material.
• yarn is meant, for example, a continuous multifilament object, a continuous yarn obtained by assembling several yarns or a continuous yarn of fibers, obtained from a single type of fiber, or from a mixture of fibers.
• fiber is meant, for example, a short or long fiber, a fiber intended to be worked in spinning or for the manufacture of nonwoven articles or a cable intended to be cut to form short fibers.
• the process for manufacturing yarns, fibers and / or filaments generally begins with the passing through the die of the thermoplastic matrix, and ends before the textile surface manufacturing step.
• the process for manufacturing threads, fibers and / or filaments notably comprises a spinning step.
• the term “spinning step” means a specific operation consisting in obtaining yarns, fibers and / or filaments.
• the spinning stage begins during the passage of the thermoplastic matrix through one or more dies and ends with the transfer of the threads, fibers and / or filaments obtained on a spool (for the threads or filaments) or in a pot (for the fibers), also called reclining.
• the spinning step can also include steps which are carried out between passing through the die and winding. These steps may for example be steps of sizing, reunification of the filaments (by one or more drive points or convergence guide), drawing, heating of the filaments, relaxation and thermofixation.
• the deposition on the yarns, fibers and / or filaments of the composition in accordance with the present invention can be carried out for example after the convergence of the yarns, fibers and / or filaments and / or during a step of drawing the yarns, fibers and / or filaments. Said deposit can also be made between these two stages.
• the composition is deposited on the yarns, fibers and / or filaments during the sizing step.
• a sizing composition comprising at least one composition in accordance with the present invention is deposited on the yarns, fibers and / or filaments.
• treatment step means treatment steps after recovery of the yarns, fibers and / or filaments, such as for example steps of texturing, stretching, stretching-texturing, sizing, relaxation, heat-fixing. , twisting, fixing, crimping, washing and / or dyeing.
• a composition in accordance with the present invention it is possible in particular to deposit on the yarns, fibers and / or filaments, a composition in accordance with the present invention during an operation chosen from the group consisting of: relaxation, twisting, fixing, crimping, stretching and / or texturing of the threads, fibers and / or filaments. It is also possible to deposit on the yarns, fibers and / or filaments a sizing composition comprising at least one composition in accordance with the present invention, in particular during a treatment step when the yarns, fibers and / or filaments. The yarns, fibers and / or filaments can also be placed in a washing and / or dyeing composition comprising at least one composition in accordance with the present invention.
• the use in accordance with the present invention can be implemented in two stages: firstly: by bringing the yarns, fibers and / or filaments into contact with the composition at any timing of the textile material development process; then - in a second step: by putting in contact, with the composition, the textile articles made up from the yarns, fibers and / or filaments treated by operating at any time production processes (for the fabrics) and / or renovation and / or maintenance (for clothing) of the textile material.
• the treatment with the composition can be applied either partially or completely on the one hand on the yarns, fibers and / or filaments then on the other hand on the textile articles made from the treated yarns, fibers and / or filaments .
• the expression “partially” is meant in particular an application which consists in treating the yarns, fibers and / or filaments with part of the ingredients constituting the composition and in providing the complement during the treatment of the textile articles made up from treated yarns, fibers and / or filaments.
• the attachment promoter system (component B) can be provided during the processing of the yarns, fibers and / or filaments, while the network generator system (component A) and the functional additive (component C) are brought in when articles are processed.
• the expression “completely” is meant an application in which, on the one hand, the yarns, fibers and / or filaments and, on the other hand, the textile articles made from these yarns, fibers and / or filaments are treated , each time, with a composition comprising all of its constituent ingredients, with the possibility that the latter are not necessarily present in the same proportions at the time of the treatment of the yarns, fibers and / or filaments then at the time of the treatment of the articles. It will also be specified that it is possible to carry out one or more deposits of the composition (taken in whole or in part) on the threads, fibers and / or filaments and / or on textile articles.
• the present invention also relates to textile articles, textile materials and threads, fibers and / or filaments for textile material, coated with a silicone elastomer obtained by crosslinking of a composition according to the invention.
• Fluorinated polyacrylate marketed by Dupont de Nemours under the commercial reference FORAPERLE ® F225. This fluorinated polyacrylate is presented in the form of a solvent solution (n-Butyl acetate) containing approximately 30% by dry matter of polyacrylate.
• A mixture of: • hydroxylated MDT resin having 0.5% of OH by weight and consisting of 62% by weight of CH 3 Si ⁇ 3 / 2 units, 24% by weight of units (CH3) 2 Si ⁇ 2 / 2 and 14% by weight of units ( ⁇ 3) 3 SiO- ⁇ / 2: 57 parts; and "hydroxylated MQ resin having 2% of OH by weight and consisting of 45% by weight of Si ⁇ 4 / 2 units and 55.% by weight of ( ⁇ 3) 3 SiO-
• B mixture of: • n-butyl titanate (Bu) of formula Ti (OBu) 4 : 2 parts; and • ethyl silicate (Et) of formula Si (OEt) 4 : 4 parts;
• - D White Spirit: 30 games.
• the treated textile used is a textile woven in Polyamide 6.6 and elastane (80/20). It is made of elastic warp and weft threads based on a 44 dTex elastane wrapped by a piece of PA 6.6 44 dTex / 34 strands. These textile surfaces have significant bidirectional elasticity (100% elongation in both directions) and a specific weight of 130 g / m 2 .
• the textile is treated by padding with the solutions. It undergoes drying at room temperature for a few minutes, then is heat treated for 2 minutes at 180 ° C. •
• the beading effect is measured using the AATC Test Method 22-1996 Spray-test. The test consists in spraying the sample of the textile article with a given volume of water. The appearance of the sample is then assessed visually and compared to the standards. A score of 0 to 5 is assigned depending on the amount of water retained. For 0, the sample is completely wet, for 5, the sample is completely dry.
• the measurement of the oleophobic character is carried out by the standardized test (AATC Test Method 118-1997) known under the name of "Oil repellency: Hydrocarbon Résistance Test”.
• the “oil resistance test” consists in depositing drops of liquid of decreasing interfacial tension on the textile and in determining the LH liquid from which the spread of the drops is observed. A score of 0 to 8 is assigned according to the LH obtained, 0 when the Kaydol oil spreads (Vaseline oil, weak oleophobic character), 3 when the n-tetradecane spreads (marked olephobia) and 8 when the n-Heptane no longer spreads (very marked oleophobia).
• the samples are washed for 30 minutes in a continuous washing cycle at 50 ° C in a commercial washing machine (Miele brand, model Novotronic 824) in the presence of a standardized detergent (ECE Not Phosphated - Reference Detergent A - whose formulation is given in standard BS1006: 1990: UK-TO), which corresponds to strong washing conditions.
• the quantity of detergent used is 96 g (the volume of water used by the machine being 12 l, this quantity corresponds to a conventional concentration of 8 g / l).
• 3 successive rinses are carried out, followed by a 2 minute spin at 500 rpm.
• the textiles are then dried in an oven for 1 min. at 150 ° C.

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• Chemical & Material Sciences (AREA)
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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
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• 2005
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  • 2005-03-30 WO PCT/FR2005/000767 patent/WO2005095519A1/fr active Application Filing
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