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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
  • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
  • B60R21/23—Inflatable members
  • B60R21/235—Inflatable members characterised by their material
• • 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
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D1/00—Woven fabrics designed to make specified articles
  • D03D1/02—Inflatable articles
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D1/00—Woven fabrics designed to make specified articles
  • D03D1/04—Sack- or bag-like articles
• • 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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
  • D06M11/78—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon; with halides or oxyhalides of silicon; with fluorosilicates
• • 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
  • D06M15/347—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated ethers, acetals, hemiacetals, ketones or aldehydes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
  • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
  • B60R21/23—Inflatable members
  • B60R21/235—Inflatable members characterised by their material
  • B60R2021/23504—Inflatable members characterised by their material characterised by material
  • B60R2021/23509—Fabric
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
  • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
  • B60R21/23—Inflatable members
  • B60R21/235—Inflatable members characterised by their material
  • B60R2021/23504—Inflatable members characterised by their material characterised by material
  • B60R2021/23509—Fabric
  • B60R2021/23514—Fabric coated fabric
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
  • C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
  • C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2505/00—Industrial
  • D10B2505/12—Vehicles
  • D10B2505/124—Air bags
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
  • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
  • Y10T428/1362—Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
  • Y10T428/2933—Coated or with bond, impregnation or core
  • Y10T428/2938—Coating on discrete and individual rods, strands or filaments
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
  • Y10T442/3049—Including strand precoated with other than free metal or alloy
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
  • Y10T442/419—Including strand precoated with other than free metal or alloy

Definitions

• the invention relates to a sizing composition for yarns, fibers and filaments.
• the invention relates more particularly to yarns, fibers, woven filaments without sizing and nor washing step having this composition present on at least part of their surface, as well as to a process for the preparation of yarns, fibers, filaments. It also relates to fabrics obtained without a sizing step or a washing step from these yarns, fibers and filaments, and a weaving process without sizing or washing from these yarns, fibers and filaments, in particular using 'a dry trade. Finally, the invention relates to the use of yarns, fibers and and filaments as well as fabrics or knits in the field of air bags for safety.
• a twisting operation is generally carried out on them.
• this twisting operation is increasingly being replaced by a pneumatic process of interlacing the filaments.
• the number of cohesion points can be varied, that is to say the number of points at which the filaments form a knot, depending on the final appearance. desired for the wire and its subsequent use.
• oils or sizing agents are commonly applied. With regard to artificial and synthetic continuous yarns, these oils or sizes are applied to the yarn one or more times during its production process. These oils or sizing products are generally removed after weaving by treating the fabric, during a washing operation. Indeed, the presence of these oils or sizing products can be harmful, in particular in the field of inflatable safety bags; for example, they can reduce the adhesion performance of the fabric to the protective coating, as well as the fire and temperature resistance properties of the bags.
• the sizing product can be difficult to remove completely, depending on the type of product used, the type of thread, and the texture of the fabric, which may cause the presence of glue residues in the tissue.
• the presence of these residues can prove to be harmful, in particular in the field of airbags; for example, it can reduce the performance of the product during its aging as well as its fire and temperature resistance properties.
• the protective bags are formed by a canvas of synthetic fiber, for example of polyamide (Nylon®), covered on at least one of its faces with a layer an elastomer of the choloroprene type.
• the “airbag” (or airbag) is an airbag made of polyamide fabric, folded and tight. The presence of such a layer or such a protective coating is dictated by the fact that the gases released by the gas generator (for example: carbon monoxide, NOx) in the event of impact, are extremely hot and contain glowing particles which may damage the Nylon ® bag.
• Protective silicone coatings are also used; they are generally obtained by coating the substrate then hardening resulting from the polyaddition of the unsaturated groups (alkenyls, eg Si-Vi) of a polyorganosiloxane on hydrogens of the same or of another polyorganosiloxane.
• the internal protective layer of elastomer and the synthetic fabric support, forming the walls of the "airbag" must in particular be perfectly adherent, and withstand high temperatures and mechanical stresses.
• Inflatable bags must in particular have good properties of resistance to fire and temperature, as well as good resistance to crumpling and abrasion (“scrub test”).
• the present invention proposes, in a first object, a sizing composition for yarns, fibers, filaments which allows in particular a weaving without sizing and without washing.
• the invention provides yarns, fibers, woven filaments without sizing and without washing, the sizing composition being present on at least part of the surface of the yarns, fibers or filaments, as well as a method of preparation of these yarns, fibers, filaments.
• the invention proposes, in a third object, a fabric or knitted fabric obtained in particular from these yarns, fibers, filaments, as well as a process for obtaining this fabric or knitted fabric.
• the invention proposes, in a fourth object, the use of these threads, fibers, filaments, fabrics and knits in the field of air bags for safety.
• the invention provides a fabric or knitted airbag for safety made from yarns, fibers, filaments having a composition comprising a polyorganosiloxane on the surface of these yarns, fibers, filaments, as well as a process for obtaining this fabric or knitted fabric.
• the invention therefore relates, in a first object, to a sizing composition for yarns, fibers, filaments comprising a compound A and / or a compound B, the compound A being a monomer, an oligomer and / or a polymer carrying at least a Si-H structural unit and the compound B being a monomer, an oligomer and / or a polymer carrying at least one unsaturated aliphatic group.
• a sizing composition, applied to yarns, fibers, filaments during their production process makes it possible to facilitate their sliding.
• the sizing composition of the invention applied to fiber or filament yarns not only allows good behavior during spinning operations, warping and weaving without gluing, but it also makes it possible to obtain a fabric having good final properties, in particular in the case of an airbag fabric having a protective silicone coating.
• the fabric in particular has good properties in terms of resistance to creasing and abrasion (“scrub” test) and resistance to fire and temperature, without it being necessary to remove the sizing composition present at the surface of the threads, fibers, filaments of the fabric.
• the polyorganosiloxane A is a polyorganohydrogensiloxane comprising: * units of the following formula:
• an aryl radical containing between 6 and 12 carbon atoms which can be optionally substituted on the aryl part by at least one halogen atom, or an alkyl and / or alkoxyl group containing 1 to 3 carbon atoms
• Polyorganosiloxane A can only be formed of unit of formula (1) or additionally comprise units of formula (2).
• the degree of polymerization is greater than or equal to 2. More generally, it is less than 5000.
• linear polymers When linear polymers are concerned, these essentially consist of "D" W 2 SiO 272 , WHSiO 272 , and “M” W 3 SiO 172 , WH 2 SiO 172 units ; the terminal blocking "M” units may be trialkylsiloxy, dialkylarylsiloxy groups.
• terminal "M” units of trimethylsiloxy, dimethylphenylsiloxy, dimethylethoxysiloxy, dimethylethyltriethoxysilylsiloxy groups.
• linear polyorganosiloxanes can be oils with a dynamic viscosity at 25 ⁇ on the order of 1 to 100,000 mPa.s at 25 ° C, generally on the order of 10 to 5000 mPa.s at 25 ° C.
• cyclic polyorganosiloxanes consist of "D" units W 2 SiO 272 , and WHSiO 272 , which can be of the dialkylsiloxy or alkylarylsiloxy type. They have a viscosity of the order of 1 to 5000 mPa.s.
• the dynamic viscosity at 25 ° C. all the polyorganosiloxane polymers considered in this presentation can be measured using a BROOKFIELD viscometer, according to the AFNOR NFT 76 102 standard of February 1972.
• Polyorganosiloxane A is preferably chosen from:
• Compound B of the sizing composition of the invention is advantageously a polyorganosiloxane.
• the polyorganosiloxane B is chosen from polyorganosiloxanes comprising similar or different units of formula (3):
• an aryl radical containing between 6 and 12 carbon atoms which can be optionally substituted on the aryl part by at least one halogen atom, or an alkyl and / or alkoxyl group containing 1 to 3 carbon atoms
• Y are similar or different and represent a linear or branched C 1 -C 12 alkenyl residue, and having at least one ethylenic unsaturation at the chain end and / or in the chain and optionally at least one heteroatom;
• d + e is equal to 1 or 2
• d is equal to 0, 1 or 2 with the sum (d + e) having a value between 1 and 3;
• Y residues they are advantageously chosen from the following list: vinyl, propenyl, 3-butenyl, 5-hexenyl, 9 decenyl, 10-undecenyl, 5.9-decadienyl, 6-1 1 -dodecadienyl.
• These polyorganosiloxanes can have a linear (branched or not) cyclic or network structure. Their degree of polymerization is preferably between 2 and 5000.
• the terminal blocking "M" units can be trialkylsiloxy, dialkylarylsiloxy, dialkylvinylsiloxy or dialkylalkenylsiloxy groups.
• Said linear polyorganosiloxanes can be oils of dynamic viscosity at 25 ⁇ O of the order of 1 to 100,000 mPa.s at 25 ° C, generally of the order of 10 to 5000 mPa.s at 25 ⁇ .
• cyclic polyorganosiloxanes consist of "D" units W'SiO 2/2 , W'YSiO 2/2 and W 2 SiO 272 , which can be of the dialkylsiloxy, alkylarylsiloxy, alkylvinylsiloxy type. or alkylsiloxy; examples of such units have already been cited above.
• Said cyclic polyorganosiloxanes B have a viscosity of the order of 1 to
• aliphatic unsaturated polyorganosiloxanes B useful in the context of the invention are, for example, those with olefinic or acetylenic unsaturation well known in the technical field considered.
• the sizing composition of the invention does not contain a hydrosilylation catalyst.
• composition of the invention may include an antistatic agent.
• the antistatic agent is a polyorganosiloxane.
• the antistatic agent is a polysiloxane / polyoxyalkylene copolymer, characterized in that the copolymer comprises units of general formulas
• each R represents a monovalent hydrocarbon group, at least 80% of these groups being methyl groups, each R 'represents a substituent group of the general formula Q (OA) n OZ where Q represents a divalent group attached to l silicon atom, A represents an alkylene group, at least 80% of the OA groups being oxyethylene groups and Z represents a hydrogen atom or a group
• Polysiloxane / polyoxyalkylene copolymers which can be used in the invention comprise siloxane meshes of the general formula
• R 3 SiO 4-3 in which each R represents a monovalent hydrocarbon group. These links are present as chain links in the polyxiloxane molecule and can also be present as terminal links in the polysiloxane molecule. Some of the R groups may be unsubstituted, saturated, aliphatic or aromatic hydrocarbon groups, but as much as 80% of these R groups are methyl groups and particularly preferably each is a methyl group.
• the cells of the general formula (i) constitute more than half of the cells of the polysiloxane molecule and can, for example, constitute from approximately 65% to approximately 92% of the cells of the siloxane, in particular from approximately 78% to approximately 85 % of these meshes.
• Polysiloxane / polyoxyalkylene copolymers which can be used in the invention comprise siloxane meshes of the general formula
• the groups A are preferably all ethylene groups CH 2 CH 2 derived, for example, from ethylene oxide. If desired, oxyethylene / oxypropylene copolymers can be used, as long as at least 80% of the groups A are ethylene groups.
• These oxyalkylene chains polymer can have a statistical or sequenced structure and can be represented as: Q (OC2H4) p (OCH 3 C2H 3 ) q OZ.
• the oxyalkylene chain is linked to the silicon atom of the siloxane chain by means of a divalent bond, Q.
• the bond can be, for example, a substituted or unsubstituted, aromatic, alicyclic or aliphatic hydrocarbon, but very conveniently it is an unsubstituted alkylene chain having from 2 to about 8 carbon atoms in the chain.
• oxyalkylene meshes other than oxyethylene meshes are present in the oxyalkylene chain, they can be used to constitute up to 20% of the meshes of the oxyalkylene chain.
• Copolymers which can be used are those having a value of n from 5 to 25, preferably those having a value of n from 5 to 15. Examples of usable copolymers to which reference is made below have on average about 7.5 or 12 meshes oxyethylene in each group R 'and have the group -
• the terminal group OZ of the group R ′ can be OH or OOCR "or R" represents a monovalent group, for example a lower alkyl group, for example methyl, ethyl or butyl; preferred copolymers include those in which the OZ end group is a hydroxy or acetate group.
• Preferred copolymers include those of the general formula
• the ratio x: y can be between 1: 1 and 1 1: 1 and is preferably between 1: 1 and
• the ratio x: y is between 3: 1 and 7: 1 and in particular between 3: 1 and 5: 1
• composition of the invention can comprise an emulsifying agent such as PVA
• composition of the invention can also comprise other compounds usually used in sizing compositions, in particular in sizing compositions used in the field of spinning polymers, in particular spinning polyamide or polyesters. They may, for example, be surfactants, lubricants, etc.
• composition of the invention may include adhesion promoters.
• Adhesion promoters are known to those skilled in the art of textile coating. Examples of suitable adhesion promoters in the context of the invention are described in particular in patent applications WO 00/60010 and
• composition of the invention preferably comprises at least 50% by weight
• composition of the invention is generally in the form of a liquid. It can in particular be a solution, an emulsion or a dispersion in a liquid.
• the composition may be in the form of an emulsion, generally an aqueous emulsion.
• the composition can also be in the form of an oil.
• the invention relates, in a second object, the yarns, fibers or filaments that can be woven without sizing and without washing, having a sizing composition as described above which is present on at least part of the surface of the yarns, fibers or filaments.
• the yarns, fibers and filaments of the invention can be of natural, artificial and / or synthetic origin. They can also be of several origins: by way of example, a yarn of polyamide and cotton fibers may be cited.
• thermoplastic polymer suitable (co) thermoplastic polymer in the context of the invention: polyolefins, polyesters, polyalkylene oxides, polyoxyalkylenes, polyhaloalkylenes, poly (alkylene phthalate or terephthalate) , poly (pheny or phenylene), poly (phenylene oxide or sulfide), polyvinyl acetates, polyvinyl alcohols, polyvinyl halides, polyvinylidene halides, polyvinyl nitriles, polyamides, polyimides, polycarbonates, polysiloxanes, polymers of acrylic or methacrylic acid, polyacrylates or methacrylates, natural polymers such as cellulose and its derivatives, synthetic polymers such as synthetic elastomers, or thermoplastic copolymers comprising at least one monomer identical to the any of the monomers included in the above
• thermoplastic polymers of the invention there may be mentioned semi-crystalline or amorphous polyamides, such as aliphatic polyamides, semi-aromatic polyamides and more generally, linear polyamides obtained by polycondensation between a saturated aliphatic or aromatic diacid, and a diamine aromatic or aliphatic saturated primary, the polyamides obtained by condensation of a lactam, an amino acid or the linear polyamides obtained by condensation of a mixture of these different monomers.
• semi-crystalline or amorphous polyamides such as aliphatic polyamides, semi-aromatic polyamides and more generally, linear polyamides obtained by polycondensation between a saturated aliphatic or aromatic diacid, and a diamine aromatic or aliphatic saturated primary, the polyamides obtained by condensation of a lactam, an amino acid or the linear polyamides obtained by condensation of a mixture of these different monomers.
• these copolyamides can be, for example, the polyadipamide of hexamethylene, the polyphthalamides obtained from terephthalic and / or isophthalic acid such as the polyamide sold under the trade name AMODEL, the copolyamides obtained from adipic acid , hexamethylene diamine and caprolactam.
• the thermoplastic polymer is a polyester, such as polyethylene terephthalate (PET), polypropylene terephthalate (PPT), polybutylene terephthalate (PBT), their copolymers and mixtures.
• thermoplastic polymer is selected from the group of (co) polyamides comprising: polyamide 6, polyamide 6.6, polyamide 4, polyamide 11, polyamide 12, polyamides 4-6, 6- 10, 6-12, 6-36, 12-12, their copolymers and mixtures.
• the yarns, fibers and filaments of the invention can be based on a mixture of thermoplastic polymers or thermoplastic copolymers.
• the yarns, fibers, filaments of the invention can include additives such as reinforcing fillers, flame retardants, UV stabilizers, heat stabilizers, matifiers such as titanium dioxide, bioactive agents, etc.
• the sizing composition advantageously represents between 0.05 and 5% by weight (dry extract) relative to the weight of the yarn, preferably between 0.1 and 2%.
• the overall title of the yarns of the invention can be chosen from the whole range of standard yarn titer, for example between 10 dtex and 2500 dtex, advantageously between 10 and 1100 dtex. In the field of safety air bags, the overall titer is advantageously between 100 and 950 dtex.
• the strand title of the yarns of the invention can be chosen from the whole range of usual yarn titles.
• the strand titer is generally greater than or equal to 0.3 dtex. It is usually less than the dtex equivalent of a diameter of 800 microns in the case of large diameter monofilaments. In the field of safety air bags, the threads are generally multifilament and the strand count is advantageously between 1.5 and 7 dtex.
• the composition on the surface of the yarns, fibers, filaments of the invention is not crosslinked.
• the invention also relates to a process for preparing yarns, fibers, filaments comprising the following steps:
• Step 1) of spinning is carried out according to any method known to those skilled in the art.
• step 1) is advantageously a step of spinning the polymer in the molten state.
• the yarns, fibers, filaments of the invention can be stretched.
• the wire can be drawn along the spinning path according to any known method, at the desired rate according to the orientation and the mechanical characteristics that one wishes to give it. It can also be simply preoriented or oriented to spinning according to the final winding speed. It can be obtained directly or taken up on rollers to regulate the winding tension, if this proves useful or necessary.
• Step 2) can be carried out in an integrated way or not.
• the winding speed is generally between 100 and 8000 m / min, advantageously between 600 and 5000 m / min, preferably between 700 and 4000 m / min.
• Texturing step 3 can be carried out according to any method known to those skilled in the art.
• Processing step 4) can be carried out before or after the possible stretching step. Processing step 4) can also be carried out before or after the possible texturing step 3).
• the composition of the treatment in step 4) is, as indicated above, generally in the form of a liquid. It can in particular be an oil, a solution, an emulsion or a dispersion in a liquid.
• the composition is in the form of an emulsion, preferably an aqueous emulsion.
• the treatment makes it possible to improve the cohesion of the filaments with one another.
• the treatment of step 4) can be carried out according to the usual techniques such as deposition by rolls or using gudulettes.
• the usual techniques mention may be made, by way of example and without limitation, of the technique of treating the raw fiber with a roller, by spray or spraying, by soaking, the padding technique, as well as any method used in the textile industry processing synthetic fibers.
• the treatment is carried out by deposition using gudulettes.
• This treatment can be carried out at different stages of the wire manufacturing. These include, among other things, all the stages where sizes are conventionally added. It is thus possible to apply the additive at the bottom of the spinning loom before winding. It is also possible, in the case of so-called "fiber” processes, to apply the additive before, during or after the drawing, crimping or drying steps, etc.
• the wire may also be advantageous to subject the wire to a first preliminary treatment (pretreatment) according to methods known to those skilled in the art, in order to promote the adhesion of the composition to the wire.
• pretreatment a first preliminary treatment
• the thread before or after the treatment of step 4
• other chemical or physical treatments such as, for example, irradiation, dyeing and the like.
• the composition deposited on the threads, fibers, filaments does not crosslink during the process for preparing the threads, fibers, filaments.
• the invention also relates, according to a third object, to a fabric or knitted fabric comprising at least in part yarns, fibers or filaments as described above, as well as to a process for obtaining this fabric or knitted fabric.
• the threads used for the production of the fabric or knitting may be of the same nature or of a different nature.
• the yarns of the invention constitute at least the warp of the fabric, advantageously they constitute both the warp and the weft of the fabric.
• the threads of the invention can be used, for example, as warp threads on industrial weaving looms. They advantageously make it possible to produce a fabric without a gluing step. Preferably, they make it possible to produce a fabric without a gluing step or a washing step.
• the yarns of the invention when used as warp yarns can be implemented easily either in direct warping or in sectional warping without requiring gluing and can be woven on all types of loom, in particular on the high speed looms used industrially.
• the thread is intended to be woven on looms causing warp threads to have high stresses, it may be preferable to polish the threads with any product usually used before weaving is carried out.
• the fabrics comprising the threads of the invention are obtained using a dry loom, such as an air jet loom, a lance loom (s) or a projectile loom ( s).
• a dry loom such as an air jet loom, a lance loom (s) or a projectile loom ( s).
• the fabric of the invention advantageously has a density between 40 and 400 g / m 2 .
• the fabric in particular in the field of air bags, generally has a number of threads per cm of fabric between 10 and 30.
• the yarns, fibers, filaments and fabrics and knits of the invention are particularly useful in the field of safety air bags, which constitutes the fourth object of the invention.
• the threads can be used to make fabrics or knits for airbags. These fabrics or knits are advantageously produced without a gluing step, and preferably without a washing step, which simplifies the method of obtaining such articles, and reduces its cost.
• the yarns, fibers, filaments and fabrics and knits of the invention are particularly useful for the production of airbag fabric or knits having a protective coating, in particular a protective silicone coating.
• these fabrics can also be produced without a heat treatment step.
• a heat treatment step is generally carried out on the fabrics to give them dimensional stability.
• This heat treatment step is generally carried out simultaneously with the fabric drying step, which drying step is necessary when a washing step has been carried out on the fabric. In the context of the present invention, when the washing step is omitted, the drying step is no longer necessary.
• the heat treatment step can be carried out simultaneously with a subsequent step of the process, in particular in the case of the use of the airbag fabric or knit. It can be carried out for example after coating the fabric or knitting with the elastomer; it is advantageously carried out simultaneously with the crosslinking step of the elastomer.
• compositions on the surface of the yarns, fibers and filaments has no influence on the subsequent treatments that the fabric or knitted fabric may undergo, in particular when the fabric or knitted fabric is used in the field of air bags for safety .
• subsequent treatments mention may be made of coating with an elastomer, etc.
• properties of resistance to fire and temperature, as well as resistance to abrasion and wrinkling, are not altered.
• composition according to the invention present on the surface of yarns, fibers, filaments used for example for the preparation of fabric or knitted airbags, does not constitute the possible protective coating of elastomer of the fabric or knitted fabric.
• the invention relates, in a fifth object, to an airbag fabric or knitted fabric made up at least in part of threads, fibers or filaments having a composition comprising a polyorganosiloxane present on at least part of the surface of these threads, fibers or filaments.
• the composition present on the surface of the threads is not the possible elastomeric protective coating of the fabric.
• the fabric or knitted airbag constituting the fifth object of the invention advantageously has a protective coating, preferably made of silicone. It can be obtained by weaving on a loom, threads, fibers or filaments having a composition comprising a polyorganosiloxane present on at least part of the surface of these threads, fibers or filaments, or their knitting. Everything that has been described above concerning the weaving or knitting process applies identically here.
• the presence of the polyorganosiloxane on the surface of the yarns, fibers, filaments, generally introduced during the sizing of the yarns, advantageously allows weaving without sizing and preferably weaving without sizing or washing step, and does not alter the final properties required of the airbag fabric, namely in particular the properties of resistance to fire and temperature, as well as the properties of wrinkling and abrasion ("scrub" test).
• the sizing composition of the fabric or knitted fabric of the fifth object of the invention comprises at least 50% by weight (dry extract) polyorganosiloxane.
• the residual sizing rate after sizing is normally less than 0.1%.
• the following fabric was used: a polyamide 66 fabric produced from 700dtex / 104 filament yarns, sold under the reference T 682 by the company Rhodia IY.
• the canvas has 16 to 17 threads / cm in warp and weft. Its weight after washing and fixing is approximately 255 g / m 2 .
• the evaluation procedure is as follows:
• the samples are then removed and suspended vertically using 2 clamps in a hood for a few minutes, then heat treated for 2 minutes in a ventilated oven at 200 ° C.
• One of the samples will be used to measure the level of sizing by extraction with petroleum ether or dichloromethane. The other will be coated.
• the average rate of a sample is determined (dry extract relative to the weight of the tissue).
• This test characterizes the resistance to creasing and abrasion of a coated fabric.
• This test evaluates the flame resistance of the fabric when the airbag is inflated by a hot gas.
• a 138 mm x 64 mm test piece is cut. Benchmarks are made to then measure the propagation time.
• This test tube is positioned horizontally, a Bunsen burner is used to ignite it for 15 s, then is removed. The flame propagation time between the marks is then measured, which makes it possible to calculate the propagation speed.
• the product must be self-extinguishing, that is to say that the flame must not propagate.
• Rhodorsil ® TCS 71 10 A sold by the company Rhodia Silicones (polymethylhydrogenosiloxane and polymethylvinylsiloxane)
• Rhodorsil ® SP3301 marketed by the company Rhodia Silicones (non-hydrolyzable polyether silicone copolymer)
• the fabrics after coating obtained according to Examples 1 to 13 are dimensionally stable.
• the polyamide 66 used is a post-condensed Polyamide 66, containing
• This polymer is introduced and melted using a twin screw extrusion device. The melted mixture is then spun so as to obtain a continuous wire of
• the wire thus obtained is wound at 200 m / min.
• the main conditions are given below:
• the wire is drawn in 1 step and hot by passage in an oven, then relaxed before being wound on a cops.
• the wire thus obtained has the following characteristics (measured according to the DIN standard
• Such a wire analyzed using a ROTHSCHILD type device has a level equivalent to an interlacing of 3 to 4 N / m, that is to say equivalent to that of a conventional wire obtained with an emulsion d 'a classic sizing product. These nodes are very stable.
• Example 16 The sizing composition of Example 16 was used in a process for spinning a polyamide 66 described below:
• the polyamide 66 used is a post-condensed Polyamide 66, containing 0.02% of titanium dioxide, of relative viscosity 3.25 (measured at a concentration of 10 g / l in 96% sulfuric acid).
• This polymer is introduced and melted using an extrusion device. The melted mixture is then spun so as to obtain a continuous 470 dtex yarn comprising 68 filaments according to an integrated spinning-drawing process. After extrusion, the filaments are cooled in air, then they pass over a guide allowing the size to be deposited. They are then gathered.
• the sizing composition is deposited in the form of an emulsion.
• the wire is then called at 650 m / min then drawn hot in 2 steps at the rate of 4.5, relaxed, then interlaced before winding at 2900 m / m.
• the wire thus obtained has the following characteristics (according to standard DIN 53834):
• a fabric is then prepared from these threads, using a Rapier loom.
• the result of the “scrub” test (in number of creases) is equal to 1500 on average.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Mechanical Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Woven Fabrics (AREA)
• Chemical Treatment Of Fibers During Manufacturing Processes (AREA)
• Air Bags (AREA)
• Silicon Polymers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36917404

Family Applications (1)

Country Status (13)

Families Citing this family (9)

Family Cites Families (15)

• 2005
  • 2005-12-06 FR FR0512347A patent/FR2894260B1/fr not_active Expired - Fee Related
• 2006
  • 2006-12-05 JP JP2008543807A patent/JP2009518552A/ja active Pending
  • 2006-12-05 TW TW095145179A patent/TW200738932A/zh unknown
  • 2006-12-05 RU RU2008127316A patent/RU2435891C2/ru not_active IP Right Cessation
  • 2006-12-05 CN CN2006800524195A patent/CN101365840B/zh not_active Expired - Fee Related
  • 2006-12-05 BR BRPI0619462-1A patent/BRPI0619462A2/pt not_active IP Right Cessation
  • 2006-12-05 MX MX2008007224A patent/MX2008007224A/es unknown
  • 2006-12-05 CA CA 2632136 patent/CA2632136A1/en not_active Abandoned
  • 2006-12-05 WO PCT/EP2006/069299 patent/WO2007065886A1/fr not_active Ceased
  • 2006-12-05 US US12/085,842 patent/US20100003436A1/en not_active Abandoned
  • 2006-12-05 EP EP06830349A patent/EP1969174A1/fr not_active Withdrawn
  • 2006-12-05 KR KR1020087014344A patent/KR20080083639A/ko not_active Ceased
• 2008
  • 2008-06-03 ZA ZA200804801A patent/ZA200804801B/xx unknown

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events