WO2016093281A1 - シリコーンゴムで被覆された布基材成形物の製造方法及び人工皮革様シート成形物 - Google Patents
シリコーンゴムで被覆された布基材成形物の製造方法及び人工皮革様シート成形物 Download PDFInfo
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- WO2016093281A1 WO2016093281A1 PCT/JP2015/084549 JP2015084549W WO2016093281A1 WO 2016093281 A1 WO2016093281 A1 WO 2016093281A1 JP 2015084549 W JP2015084549 W JP 2015084549W WO 2016093281 A1 WO2016093281 A1 WO 2016093281A1
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- Prior art keywords
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- silicone rubber
- coating layer
- rubber composition
- parts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
- B32B37/025—Transfer laminating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0034—Polyamide fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0038—Polyolefin fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
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- B32B2383/00—Polysiloxanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/108—Slipping, anti-blocking, low friction
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1635—Elasticity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Definitions
- the present invention relates to a method for producing a fabric base material coated with silicone rubber that can be suitably applied to artificial leather-like sheet moldings, in particular, by coating a silicone rubber coating layer on the surface of the fabric base material. It is possible to add slipperiness to prevent the adhesion of dust and foreign matters, and it is covered with silicone rubber that follows well when the molded product is deformed and gives a cured coating film that does not crack or crack on the surface and has good adhesion.
- the present invention relates to a method for producing a fabric base material molding, and an artificial leather-like sheet molding in which a silicone rubber coating layer is laminated on the surface of a fabric base material.
- Patent Document 1 proposes a coating film having surface slipperiness in which a small amount of dimethylpolysiloxane is added to a phenyl block polymer, but cracks and cracks are similarly generated.
- Patent Document 2 proposes that an organic titanium compound is added to a phenyl block polymer to form a cured product having protrusions formed on the surface, thereby providing a coating film having antistatic properties. However, it will also crack and crack as well.
- Patent Document 3 R 3 SiO 1/2 unit (wherein R independently represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 6 carbon atoms) and
- a condensation curable composition based on a condensate of an organosiloxane composed of SiO 4/2 units and a diorganopolysiloxane whose molecular chain end is blocked with a functional group-containing silyl group.
- a high-strength, high-elongation coating film can be obtained, surface slipperiness is not exhibited.
- siloxane having a bleeding property that does not dissolve in dimethylsiloxane such as a phenyl group or a polyoxyalkylene structure
- the ability to prevent biological adhesion can be obtained, but dust, burrs at the time of molding, and foreign matters are more likely to adhere.
- the present invention has been made in view of the above circumstances, and since the obtained cured coating film (silicone rubber coating layer) has surface slipperiness, it prevents dust, burrs during molding, and adhesion of foreign substances, and the cured coating obtained. Since the film has elongation, the cloth base material is not cracked or deformed when the cloth base material is deformed, and a method for producing a cloth base material coated with silicone rubber, and an artificial material in which a silicone rubber coating layer is laminated on the surface of the cloth base material An object is to provide a leather-like sheet molding.
- the inventors of the present invention have found that the liquid silicone rubber composition containing an adhesion-imparting component is cured on at least one surface of the cloth substrate in order to improve the adhesion.
- a second cured product of a silicone rubber composition containing a silicone resin is further formed on the outer surface of the first coating layer.
- the present invention provides a method for producing a fabric base material coated with silicone rubber as shown below, and an artificial leather-like sheet molding in which a silicone rubber coating layer is laminated on the surface of a fabric base material produced by the production method.
- a liquid silicone rubber composition containing an adhesion-imparting component is applied on at least one surface of a cloth substrate, and the composition is cured to form a first coating layer, and then the first coating layer
- a method for producing a fabric-based molded article comprising: applying a silicone rubber composition containing a silicone resin on the outer surface of the resin, and curing the composition to form a second coating layer.
- a silicone rubber composition containing a silicone resin is applied on the surface of the release paper, and the composition is cured to form a second coating layer, and then an adhesive property is formed on the outer surface of the second coating layer.
- a liquid silicone rubber composition containing an adhesion-imparting component is applied, and the composition is cured to form a first coating layer.
- the liquid silicone rubber composition used for the first coating layer is (1-A) 100 parts by mass of an organopolysiloxane containing an alkenyl group bonded to at least two silicon atoms in one molecule and having a viscosity at 23 ° C.
- One molecule contains at least two hydrogen atoms bonded to silicon atoms, and does not contain an arylene skeleton or a tri to tetravalent group in which one or two hydrogen atoms are eliminated from the arylene skeleton.
- Organohydrogenpolysiloxane 0-20 parts by mass, (1-D) 0 to 100 parts by mass of reinforcing silica fine powder, (1-E) addition reaction catalyst containing a catalyst amount
- the silicone rubber composition used for the second coating layer is (2-A) 100 parts by mass of an organopolysiloxane containing an alkenyl group bonded to at least two silicon atoms in one molecule; (2-B) R 3 SiO 1/2 units (wherein R independently represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 6 carbon atoms) and SiO 4/2 units, The number of moles of R 3 SiO 1/2 units per mole of 4/2 units is 0.5 to 1.5 moles, and R 2 SiO 2/2 units and RSiO 3/2 units (in the above formulas, R 1 to 300 parts by mass of a silicone resin which may have 0 to 1.0 mol per 1 mol of SiO 4/2 units, respectively, (2-C) 0.1 to 50 parts by mass of an organ
- the component (1-B) comprises a hydrogen atom bonded to at least one silicon atom in one molecule, at least one arylene skeleton in one molecule and / or one to two hydrogen atoms removed from the arylene skeleton.
- One or two or more functional groups selected from a separated tri to tetravalent group and an epoxy group, alkoxysilyl group, ester group, acrylic group, methacryl group, anhydrous carboxy group, isocyanate group, amino group and amide group
- a synthetic leather-like sheet molding in which a first coating layer is formed as a silicone rubber coating layer on the surface of a cloth base material, and a second coating layer is laminated on the first coating layer,
- the first coating layer is a cured product of a liquid silicone rubber composition containing an adhesion-imparting component
- An artificial leather-like sheet molded product wherein the second coating layer is a cured product of a silicone rubber composition containing a silicone resin.
- the liquid silicone rubber composition used for the first coating layer is (1-A) 100 parts by mass of an organopolysiloxane containing an alkenyl group bonded to at least two silicon atoms in one molecule and having a viscosity at 23 ° C.
- One molecule contains at least two hydrogen atoms bonded to silicon atoms, and does not contain an arylene skeleton or a tri to tetravalent group in which one or two hydrogen atoms are eliminated from the arylene skeleton.
- Organohydrogenpolysiloxane 0-20 parts by mass, (1-D) 0 to 100 parts by mass of reinforcing silica fine powder, (1-E) addition reaction catalyst containing a catalyst amount
- the silicone rubber composition used for the second coating layer is (2-A) 100 parts by mass of an organopolysiloxane containing an alkenyl group bonded to at least two silicon atoms in one molecule; (2-B) R 3 SiO 1/2 units (wherein R independently represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 6 carbon atoms) and SiO 4/2 units, The number of moles of R 3 SiO 1/2 units per mole of 4/2 units is 0.5 to 1.5 moles, and R 2 SiO 2/2 units and RSiO 3/2 units (in the above formulas, R 1 to 300 parts by mass of a silicone resin which may have 0 to 1.0 mol per 1 mol of SiO 4/2 units, respectively, (2-C) 0.1 to 50 parts by mass of an organ
- the component (1-B) comprises a hydrogen atom bonded to at least one silicon atom in one molecule, at least one arylene skeleton in one molecule and / or one to two hydrogen atoms removed from the arylene skeleton.
- One or two or more functional groups selected from a separated tri to tetravalent group and an epoxy group, alkoxysilyl group, ester group, acrylic group, methacryl group, anhydrous carboxy group, isocyanate group, amino group and amide group
- the artificial leather-like sheet molding according to [9] which is an organosilicon compound having 1 to 100 silicon atoms.
- the adhesion between the obtained cured coating film and the cloth substrate is good, and the obtained cured coating film has surface slipperiness, so that dust, burrs during molding, and adhesion of foreign matter Cloth that is coated with silicone rubber that does not crack or crack when deformed even if applied and cured on the surface of articles such as molded products, gaskets, and packings.
- a base material molding is obtained, which is useful as an artificial leather-like sheet molding.
- a liquid silicone rubber composition containing an adhesion-imparting component is applied on at least one surface of a fabric base material, After curing to form a first coating layer, a silicone rubber composition containing a silicone resin is applied onto the outer surface of the first coating layer, and the composition is cured to form a second coating layer. Or by applying a silicone rubber composition containing a silicone resin on the surface of the release paper and curing the composition to form a second coating layer.
- a liquid silicone rubber composition containing an adhesion-imparting component on the outer surface, laminating a cloth base material thereon, and curing the liquid silicone rubber composition to form a first coating layer. It is characterized by.
- a liquid silicone rubber composition containing an adhesion-imparting component is applied onto at least one surface of the cloth substrate, and the composition is cured to form a first coating layer, and a release paper
- a silicone rubber composition containing a silicone resin is applied on the surface, an application surface of the silicone rubber composition containing the silicone resin is bonded on the first coating layer, and then the silicone rubber composition is cured. Then, the second coating layer may be formed on the first coating layer.
- the liquid silicone rubber composition used for the first coating layer is a liquid silicone rubber composition containing an adhesion-imparting component for adhering the cured product of the silicone rubber composition as the second coating layer to the cloth substrate. It is a thing.
- the liquid silicone rubber composition used for the first coating layer include the following components (1-A), (1-B) and (1-E), and optionally (1-C) and / or (1- A liquid silicone rubber composition containing component D) can be used.
- the following (1-B) component is preferably used as the adhesion imparting component.
- Component (1-A) is an organopolysiloxane containing an alkenyl group bonded to at least two silicon atoms on average in one molecule, and acts as a main agent (base polymer) of the liquid silicone rubber composition.
- base polymer a main agent
- R 1 a SiO (4-a) / 2 (I) wherein R 1 is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, preferably 1 to 8 carbon atoms, which are the same or different from each other, and a is 1.5 to 2.8, preferably (It is a positive number in the range of 1.8 to 2.5, more preferably 1.95 to 2.05.)
- examples of the unsubstituted or substituted monovalent hydrocarbon group bonded to the silicon atom represented by R 1 include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, Pentyl group, neopentyl group, hexyl group, cyclohexyl group, octyl group, nonyl group, alkyl group such as decyl group, aryl group such as phenyl group, tolyl group, xylyl group, naphthyl group, benzyl group, phenylethyl group, phenylpropyl Aralkyl groups such as groups, vinyl groups, allyl groups, propenyl groups, isopropenyl groups, butenyl groups, hexenyl groups, cyclohexenyl groups, octeny
- halogen atom such as bromine, chlorine, cyano group, etc., such as chloromethyl group, chloro Propyl group, bromoethyl group, trifluoropropyl group, but cyanoethyl group and the like,
- a halogen atom such as bromine, chlorine, cyano group, etc.
- chloromethyl group such as chloro Propyl group, bromoethyl group, trifluoropropyl group, but cyanoethyl group and the like
- at least 90 mol% of all R 1 is a methyl group.
- R 1 must be an alkenyl group (preferably having 2 to 8 carbon atoms, more preferably 2 to 6 and particularly preferably a vinyl group).
- the alkenyl group content in the organopolysiloxane is 1.0 ⁇ 10 ⁇ 6 to 10.0 ⁇ 10 ⁇ 4 mol / g, particularly 1.0 ⁇ 10 ⁇ 5 to 8.0 ⁇ 10 ⁇ 4 mol / g. g is preferable.
- the amount of the alkenyl group is less than 1.0 ⁇ 10 ⁇ 6 mol / g, the rubber hardness may be too low to form a gel, and if it exceeds 10.0 ⁇ 10 ⁇ 4 mol / g, the crosslinking density May become too high, resulting in a hard rubber.
- This alkenyl group may be bonded to a silicon atom at the end of the molecular chain, may be bonded to a silicon atom in the middle of the molecular chain, or may be bonded to both.
- This organopolysiloxane basically has both ends of the molecular chain blocked with triorganosiloxy groups (R 1 3 SiO 1/2 ) and the main chain is a diorganosiloxane unit (R 1 2 SiO 2/2 )), But may be partially branched or cyclic.
- the average degree of polymerization (number average degree of polymerization, hereinafter the same) is 1,500 or less, usually 100 to 1,500, preferably 150 to 1,000. If it is less than 100, sufficient rubber feeling may not be obtained, and if it is higher than 1,500, the viscosity becomes high and molding may be difficult.
- the number average degree of polymerization and the number average molecular weight can be determined, for example, by calculating from polystyrene-converted values by gel permeation chromatography (GPC) analysis using toluene as a developing solvent (hereinafter the same).
- the viscosity at 23 ° C. is preferably 0.1 to 2,000 Pa ⁇ s, particularly 0.5 to 500 Pa ⁇ s.
- the viscosity can be measured with a rotational viscometer (BL type, BH type, BS type, cone plate type, rheometer, etc.) (hereinafter the same).
- Component (1-B) is an adhesion-imparting component having a hydrogen atom (that is, SiH group) bonded to at least one silicon atom in one molecule, and at least one arylene skeleton or the arylene skeleton.
- An organosilicon compound having 1 to 100 silicon atoms, preferably 2 to 30 silicon atoms, having a tri to tetravalent group (usually a bi to tetravalent aromatic ring skeleton) from which 1 to 2 hydrogen atoms have been removed from .
- arylene skeleton or the trivalent to tetravalent group in which one or two hydrogen atoms are eliminated from the arylene skeleton include those shown below.
- the adhesion-imparting component includes at least one, usually 1 to 100, preferably 2 to 50, more preferably about 2 to 30 SiH groups in one molecule, and at least one in one molecule.
- it has about 1 to 4 arylene skeletons and / or a tri to tetravalent group in which 1 to 2 hydrogen atoms are eliminated from the arylene skeleton, and optionally, an epoxy group such as a glycidoxy group,
- One kind of functional group selected from alkoxysilyl groups such as trimethoxysilyl group, triethoxysilyl group, methyldimethoxysilyl group, ester group, acrylic group, methacryl group, anhydrous carboxy group, isocyanate group, amino group, amide group, etc.
- N is 1 to 4.
- the above compounds contain an alkoxysilyl group such as trimethoxysilyl group, triethoxysilyl group, methyldimethoxysilyl group, acrylic group, methacryl group, ester group, anhydrous carboxy group, isocyanate group, amino group, amide group, etc.
- Organosilicon compounds can also be used.
- the unsubstituted or substituted monovalent hydrocarbon group for R w and R x is preferably an alkyl group, an aryl group, an aralkyl group, an alkenyl group, etc.
- the substituted monovalent hydrocarbon group may be substituted with an alkoxy group, an acrylic group, a methacryl group, an acryloyl group, a methacryloyl group, an amino group, an alkylamino group, or the like. Can be mentioned.
- the SiH group content is preferably 0.001 to 0.02 mol / g, particularly 0.002 to 0.01 mol / g in the organosilicon compound. If the amount of SiH groups is too small or too large, the adhesive strength may be reduced.
- the amount of the component (1-B) is 0.1 to 30 parts by weight, preferably 0.2 to 20 parts by weight, more preferably 0.1 to 100 parts by weight of the component (1-A). 3 to 10 parts by mass. If the blending amount is less than 0.1 parts by mass, sufficient adhesiveness may not be obtained, and if it exceeds 30 parts by mass, the physical properties may be lowered.
- the component (1-C) contains a hydrogen atom (SiH group) bonded to at least 2, preferably 3 or more silicon atoms in one molecule, and the arylene skeleton and 1 to 2 hydrogen atoms from the arylene skeleton.
- This is an organohydrogenpolysiloxane that does not contain a trivalent or tetravalent group that has been eliminated (ie, is different from the component (1-B)), and is a conventionally known organohydrosiloxane represented by the following average composition formula (II): Genpolysiloxane is applicable.
- R 2 is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 8 carbon atoms, and preferably has no aliphatic unsaturated bond.
- Specific examples include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, an alkyl group such as a pentyl group and a hexyl group, a cycloalkyl group such as a cyclohexyl group, and a phenyl group.
- At least part of the hydrogen atoms of the monovalent hydrocarbon group such as an aryl group, an aralkyl group such as a benzyl group, etc., a monovalent hydrocarbon group such as an 3,3,3-trifluoropropyl group, or a cyanomethyl group is halogenated
- a substituted monovalent hydrocarbon group such as a substituted alkyl group substituted with an atom or a cyano group.
- b is 0.7 to 2.1
- c is 0.01 to 1.0
- b + c is 0.8 to 3.0
- c is 0.10 to 1. 0.0, more preferably 0.18 to 1.0, still more preferably 0.2 to 1.0
- b + c is a positive number satisfying 1.0 to 2.5.
- the molecular structure of the organohydrogenpolysiloxane may be any of linear, cyclic, branched, and three-dimensional network structures.
- the number of silicon atoms in one molecule is preferably 2 to 300, particularly about 4 to 200, which is liquid at room temperature.
- the hydrogen atom (SiH group) bonded to the silicon atom may be at the end of the molecular chain, at the side chain (in the middle of the molecular chain), or both, and at least two (usually normal) 2 to 300), preferably 3 or more (eg 3 to 200), more preferably about 4 to 150 are used.
- the SiH group content is preferably 0.001 to 0.020 mol / g, particularly 0.002 to 0.017 mol / g in the organohydrogenpolysiloxane. If the amount of SiH groups is too small, crosslinking may be insufficient, and if the amount is too large, physical properties may become unstable.
- organohydrogenpolysiloxane examples include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, methylhydrogencyclopolysiloxane, methylhydrogensiloxane, Dimethylsiloxane cyclic copolymer, tris (dimethylhydrogensiloxy) methylsilane, tris (dimethylhydrogensiloxy) phenylsilane, trimethylsiloxy group-blocked methylhydrogenpolysiloxane at both ends, trimethylsiloxy group-blocked dimethylsiloxane / methylhydrogen at both ends Siloxane copolymer, dimethylhydrogensiloxy group-blocked dimethylpolysiloxane at both ends, dimethylhydrogensiloxy group-blocked dimethylsiloxane / methylhydro at both ends Polysiloxane copolymer, trimethylsiloxy group-capped
- organohydrogenpolysiloxanes include compounds having the following structural formula. (In the formula, k is an integer of 2 to 10, and s and t are integers of 0 to 10.)
- the organohydrogenpolysiloxane preferably has a viscosity at 23 ° C. of 0.5 to 10,000 mPa ⁇ s, particularly 1 to 300 mPa ⁇ s. If the viscosity is too low, the viscosity of the resulting composition may be low, and if it is too high, blending may be difficult.
- the blending amount of the organohydrogenpolysiloxane of the (1-C) component is 0 to 20 parts by mass and 0.1 to 20 parts by mass with respect to 100 parts by mass of the organopolysiloxane of the (1-A) component.
- the content is preferably 0.2 to 10 parts by mass, and more preferably 0.3 to 10 parts by mass.
- the component (1-B) and the component (1-C) for the alkenyl group bonded to the silicon atom in the component (1-A) are added.
- the molar ratio of hydrogen atoms (SiH groups) bonded to silicon atoms in the component is 0.5 to 10 mol / mol, preferably 0.8 to 6 mol / mol, more preferably 1 to 5 mol / mol. It is desirable to blend in such an amount. If it is less than 0.5 mol / mol, crosslinking may not be sufficient, and sufficient mechanical strength may not be obtained. If it exceeds 10 mol / mol, physical properties after curing will be deteriorated, particularly heat resistance and compression. Permanent distortion may be significantly degraded.
- the component (1-D) is a reinforcing silica fine powder
- the reinforcing silica fine powder is not particularly limited in the type of silica, and may be any material that is usually used as a rubber reinforcing material.
- the reinforcing silica fine powder those used in conventional silicone rubber compositions can be used, and in particular, reinforcing silica fine powder having a specific surface area of 50 m 2 / g or more by the BET method is used.
- precipitated silica, fumed silica, calcined silica and the like having a specific surface area of 50 to 400 m 2 / g by BET method are preferably used. Fumed silica is suitable for improving the rubber strength.
- the reinforcing silica fine powder may be a surface-treated silica fine powder.
- these silica fine powders may be processed directly in a powder state in advance. It can be processed by a generally known technique as a normal processing method.
- the untreated silica fine powder and the processing agent are put in a mechanical kneading apparatus or fluidized bed sealed at normal pressure, and an inert gas is present if necessary. Under the mixing treatment at room temperature or heat treatment. In some cases, a catalyst may be used to facilitate the treatment. After kneading, the treated silica fine powder can be produced by drying.
- the surface hydrophobization treatment of the reinforcing silica fine powder (1-D) is carried out in the course of preparing the liquid silicone rubber composition by the alkenyl group-containing organopolysiloxane (base polymer) as the component (1-A).
- a surface hydrophobization treatment may be performed simultaneously with the preparation of the composition by uniformly mixing the surface-untreated reinforcing silica fine powder together with the surface treatment agent under heating.
- Specific treatment agents include silazanes such as hexamethyldisilazane, methyltrimethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, butyltrimethoxysilane, dimethyldimethoxysilane, diethyldimethoxysilane, vinyltriethoxy.
- Silane coupling agents such as silane, vinyltrimethoxysilane, trimethylmethoxysilane, triethylmethoxysilane, vinyltris (methoxyethoxy) silane, trimethylchlorosilane, dimethyldichlorosilane, divinyldimethoxysilane and chloropropyltrimethoxysilane, polymethylsiloxane, organo Examples thereof include organosilicon compounds such as hydrogen polysiloxane, which are surface treated and used as hydrophobic silica fine powder.
- silane coupling agents or silazanes are particularly preferable.
- the blending amount of the treatment agent may be equal to or more than the amount calculated from the coating area of the treatment agent.
- the blending amount of the (1-D) component is 0 to 100 parts by mass, preferably 5 to 80 parts by mass, more preferably 10 to 50 parts by mass with respect to 100 parts by mass of the (1-A) component.
- this component may not be added, in that case, the mechanical strength of the cured rubber is weakened, which may cause a problem in the coating strength. When it exceeds 100 parts by mass, filling becomes difficult, and workability and workability may be deteriorated.
- Component (1-E) is an addition reaction catalyst.
- the addition reaction catalyst include platinum black, platinous chloride, a reaction product of chloroplatinic acid and a monohydric alcohol, a complex of chloroplatinic acid and an olefin, Examples include platinum group catalysts such as platinum-based catalysts such as platinum bisacetoacetate, palladium-based catalysts, and rhodium-based catalysts.
- the addition amount of the addition reaction catalyst is a catalytic amount, and is usually 0.1 to 1,000 ppm, particularly 1 to 200 ppm in terms of mass of platinum group metal such as platinum, palladium or rhodium metal with respect to the (1-A) component. It is.
- the liquid silicone rubber composition used for the first coating layer of the present invention includes various additives such as titanium oxide, iron oxide, cerium oxide, vanadium oxide, and cobalt oxide.
- Metal oxides such as chromium oxide and manganese oxide and composites thereof, quartz powder, diatomaceous earth, calcium carbonate, magnesium carbonate, alumina, carbon, hollow glass, hollow resin, gold, silver, copper and other conductive inorganic powders
- Inorganic fillers such as plating powder can be added, and pigments, heat-resistant agents, flame retardants, plasticizers, reaction control agents and the like may be added as long as the intended properties are not impaired.
- the addition amount of these arbitrary components can be made into a normal amount in the range which does not inhibit the effect of this invention.
- the liquid silicone rubber composition used for the first coating layer of the present invention comprises the above-described components (1-A), (1-B) and (1-E), and optionally (1-C), (1- D) It can be obtained simply by mixing components or optional components uniformly at room temperature, and usually has a viscosity at 23 ° C. of 50 to 20,000 Pa ⁇ s, particularly about 100 to 5,000 Pa ⁇ s. Can be used for
- the cured product of the silicone rubber composition used for the first coating layer has a hardness of 50 or more (usually 50 to 80), particularly about 50 to 60, as measured by a durometer A hardness meter measured according to JIS K6249. It is preferable. If the hardness is too low, the resulting leather may be weak.
- the alkenyl group content and addition amount of the component (1-A), the component (1-B) and This can be achieved by appropriately adjusting the SiH group content and addition amount of the 1-C) component, the specific surface area and addition amount of the reinforcing silica fine powder, and the like.
- the second coating layer is a component coated on the outer surface of the first coating layer formed by coating on the surface of the cloth substrate.
- the silicone rubber composition used for the second coating layer includes: A silicone rubber composition containing a silicone resin component (silicone resin component having a three-dimensional network structure) is used.
- the purpose of the second coating layer is used for the purpose of eliminating surface tack and imparting slipperiness to the surface.
- a silicone rubber composition containing the following components (2-A) to (2-D) can be used as the second coating layer.
- Component (2-A) is an organopolysiloxane containing an alkenyl group bonded to at least two silicon atoms in one molecule, and (1-A) of the liquid silicone rubber composition used for the first coating layer. ) The same organopolysiloxane as the component.
- the component (2-B) is composed of R 3 SiO 1/2 units (wherein R independently represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 6 carbon atoms) and SiO 4/2 units.
- the number of moles of R 3 SiO 1/2 units per mole of SiO 4/2 units is 0.5 to 1.5 moles, and R 2 SiO 2/2 units and / or RSiO 3/2 units In each formula, R is as described above) in an amount of 0 to 1.0 mol, preferably 0 to 0.5 mol, more preferably 0 to 0.3 mol, per 1 mol of SiO 4/2 units.
- It may be a silicone resin (organopolysiloxane having a three-dimensional network (resinous) structure).
- the molar ratio of the R 3 SiO 1/2 unit (M unit) to the SiO 4/2 unit (Q unit) is less than 0.5, it is different from other components in the silicone rubber composition used for the second coating layer.
- the compatibility may be deteriorated, and if it is greater than 1.5, the hardness of the cured product (second silicone coating layer) of the silicone rubber composition used for the second coating layer may be decreased. is there. Therefore, the molar ratio of M unit to Q unit is in the range of 0.5 to 1.5, preferably in the range of 0.7 to 1.2.
- R is independently an unsubstituted or substituted monovalent hydrocarbon group having 1 to 8 carbon atoms, particularly 1 to 6 carbon atoms, such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and an n-butyl group.
- Alkyl groups such as isobutyl group, tert-butyl group, pentyl group and hexyl group; cycloalkyl groups such as cyclopentyl group and cyclohexyl group; vinyl group, allyl group, isopropenyl group, butenyl group, pentenyl group, hexenyl group and the like Alkenyl group; phenyl group; halogen-substituted alkyl groups such as chloromethyl group, 3-chloropropyl group, 1-chloro-2-methylpropyl group, 3,3,3-trifluoropropyl group, etc. , Vinyl group and phenyl group are preferable, and methyl group is particularly preferable.
- the number average molecular weight of the organopolysiloxane as the component (2-B) is preferably 500 to 100,000, particularly 1,000 to 50,000. If the number average molecular weight is too small, the slipperiness of the surface of the second silicone coating layer may be lowered. If it is too large, the viscosity may be increased or the solubility may be deteriorated.
- the alkenyl group content in the organopolysiloxane is 0.0001 to 0.05 mol / g, particularly 0.001 to 0.01 mol / g. Is preferred. If the amount of the alkenyl group is too small, the hardness of the second silicone coating layer may be lowered and the surface slipperiness may be lowered. If the amount is too large, the surface layer may be brittle.
- the organopolysiloxane itself as the component (2-B) can be obtained by co-hydrolyzing and condensing an alkoxy group-containing silane compound corresponding to each unit in an organic solvent by a known method.
- R 3 SiOMe and Si (OMe) 4 may be co-hydrolyzed in an organic solvent together with R 2 Si (OMe) 2 and / or RSi (OMe) 3 and condensed if desired (note that In the above formulas, R is independently as described above, and Me represents a methyl group).
- organic solvent what can melt
- the content molar ratio of each unit relating to the component (2-B) can be appropriately set, for example, by adjusting the charged amount (molar ratio) of the silane compound corresponding to each unit.
- the amount of component (2-B) is 1 to 300 parts by weight, preferably 10 to 200 parts by weight, more preferably 20 to 150 parts by weight, based on 100 parts by weight of component (2-A). is there. If the amount of component (2-B) is too small, the surface tackiness of the second coating layer may not be reduced. If the amount of component (2-B) is too large, the composition In some cases, it is difficult to increase the viscosity and blend uniformly, or the workability is inferior and uniform coating becomes difficult.
- the component (2-C) is an organohydrogenpolysiloxane containing hydrogen atoms bonded to at least two silicon atoms in one molecule, and (1) of the liquid silicone rubber composition used for the first coating layer.
- -C) An organohydrogenpolysiloxane that is the same as the component (that is, does not contain an arylene skeleton and a trivalent to tetravalent group in which one or two hydrogen atoms are eliminated from the arylene skeleton in the molecule).
- Component (2-C) is added in an amount of 0.1 to 50 parts by weight, preferably 0.1 to 20 parts by weight, and more preferably 0.1 to 50 parts by weight per 100 parts by weight of component (2-A). 2 to 15 parts by mass.
- the molar ratio of hydrogen atoms bonded to silicon atoms (SiH groups) in the component (2-C) to the total of alkenyl groups bonded to silicon atoms in the components (2-A) and (2-B) is 0. It is desirable to blend in an amount of 5 to 10 mol / mol, preferably 0.8 to 6 mol / mol, more preferably 1 to 5 mol / mol. If it is less than 0.5 mol / mol, crosslinking may not be sufficient, and sufficient mechanical strength may not be obtained, or surface tackiness may be insufficiently controlled. In some cases, the heat resistance and compression set may deteriorate significantly.
- the component (2-D) is an addition reaction catalyst and can be an addition reaction catalyst similar to the component (1-E) of the liquid silicone rubber composition used for the first coating layer.
- the amount of the component (2-D) is a catalytic amount, and is usually 0.1 to 1,000 ppm in terms of the mass of a platinum group metal such as platinum, palladium or rhodium metal with respect to the component (2-A). Particularly, it is 1 to 200 ppm.
- the silicone rubber composition used for the second coating layer of the present invention has various additives such as titanium oxide, iron oxide, cerium oxide, vanadium oxide, cobalt oxide, Metal oxides such as chromium oxide and manganese oxide and composites thereof, quartz powder, diatomaceous earth, calcium carbonate, magnesium carbonate, alumina, carbon, hollow glass, hollow resin, gold, silver, copper and other inorganic powders having conductivity, Inorganic fillers such as plating powder can be added, and pigments, heat-resistant agents, flame retardants, plasticizers, reaction control agents, and the like may be added as long as the intended properties are not impaired.
- the addition amount of these arbitrary components can be made into a normal amount in the range which does not inhibit the effect of this invention.
- the silicone rubber composition used for the second coating layer of the present invention can be obtained by simply mixing the above-described components (2-A) to (2-D) and, if necessary, optional components evenly at room temperature. Usually, those having a viscosity at 23 ° C. of 10 to 1,000 Pa ⁇ s, particularly about 20 to 500 Pa ⁇ s can be preferably used.
- the cured product of the silicone rubber composition used for the second coating layer has a hardness of 50 or more (usually 50 to 90), particularly about 60 to 85, as measured by a durometer A hardness meter based on JIS K6249. It is preferable. If the hardness is too low, the slipperiness of the surface may decrease. In addition, in order to make it into the said hardness range, it is achieved by containing a silicone resin component (silicone resin component of a three-dimensional network structure) in a predetermined amount in the silicone rubber composition.
- a silicone resin component silicone resin component of a three-dimensional network structure
- a first method for producing a molded fabric base material coated with silicone rubber according to the present invention is a liquid silicone containing an adhesion-imparting component on at least one surface of a fabric base material in order to improve adhesion.
- a rubber composition and curing to form a first coating layer comprising a cured product of the composition, in order to impart slipperiness, on the outer surface of the first coating layer.
- a silicone rubber composition containing a silicone resin is applied and cured to form a second coating layer made of a cured product of the composition, whereby the surface of the cloth substrate is coated with the first coating layer and the second coating layer. It is a method of laminating with a coating layer.
- a silicone rubber composition containing a silicone resin is applied on the surface of the release paper, and the composition is cured to form a second coating layer, and then the second coating is formed.
- a liquid silicone rubber composition containing an adhesion-imparting component is applied on the outer surface of the layer, a cloth base material is laminated thereon, and the liquid silicone rubber composition is cured to form a first coating layer
- the method to do can be adopted.
- the surface slipperiness of the cured coating is dramatically improved, the adhesion to the fabric substrate is good, and the cured coating has elongation, so that the laminated fabric substrate does not crack or crack.
- a molded product can be obtained.
- the fabric substrate molded product produced by the above method can be suitably used as an artificial leather-like sheet molded product having a silicone rubber coating layer laminated on its surface.
- the liquid silicone rubber composition containing the adhesion-imparting component used for the first coating layer is applied onto a cloth substrate and cured before use. Further, in the second manufacturing method, it is applied onto the second coating layer, a cloth base material is placed thereon, laminated, and then cured and used.
- the application method of the liquid silicone rubber composition can be applied by an application method known in the industry such as brush coating, spraying, dipping or the like.
- the thickness of the coating layer to be applied is arbitrary, but it is usually applied to a thickness of about 1 to 1,000 ⁇ m.
- the curing condition after coating is performed by heating at 50 to 200 ° C. for about 1 to 20 minutes.
- the curing temperature is preferably 100 to 150 ° C., since it takes time for curing if the temperature is low, and the fabric base material may be deteriorated by heat if the temperature is too high.
- the silicone rubber composition containing a silicone resin used for the second coating layer has a surface that exhibits slipperiness, and is laminated on the first coating layer.
- the method for applying and laminating the silicone rubber composition is arbitrary, but as a third production method, after applying the silicone rubber composition used for the second coating layer on the release paper, A method of curing after laminating on a cloth on which one coating layer is laminated is also preferably used.
- the coating thickness of the silicone rubber composition used for the second coating layer is arbitrary, but it is usually applied to a thickness of about 1 to 1,000 ⁇ m.
- the curing conditions after bonding are arbitrary, but the same conditions as the curing of the first coating layer are selected, and heating is performed at 50 to 200 ° C., particularly 100 to 150 ° C. for about 1 to 20 minutes. Is called.
- a polyester fiber such as polyethylene terephthalate (PET), a synthetic fiber such as nylon, polyamide or polyolefin, or a natural fiber such as cellulose can be used.
- PET polyethylene terephthalate
- a synthetic fiber such as nylon, polyamide or polyolefin
- a natural fiber such as cellulose
- the release paper paper, polypropylene, polytetrafluoroethylene, polyethylene terephthalate, or the like is used. The release paper is peeled off and removed during use.
- the degree of polymerization and molecular weight of each component are weight average values in terms of polystyrene in GPC analysis, and the viscosity is a value measured by a rotational viscometer. Moreover, in the following example, a part is a mass part.
- Example 1 After applying the first liquid silicone rubber composition containing the following adhesion-imparting component on the surface of the cloth substrate made of PET fiber in an amount of 100 ⁇ m, in a dryer at 120 ° C. for 5 minutes. And cured by heating. Next, a second silicone rubber composition containing the following silicone resin was applied on the release paper to a thickness of 50 ⁇ m. The 2nd silicone rubber composition layer apply
- silicone rubber base performs surface hydrophobic treatment of fumed silica.
- 129 parts of this silicone rubber base dimethylpolysiloxane (1-A1) [vinyl group content having a viscosity of 30 Pa ⁇ s (average degree of polymerization of about 750) at 23 ° C. with both ends of the molecular chain blocked with dimethylvinylsiloxy groups 3 ⁇ 10 ⁇ 5 mol / g] 40 parts, methyl hydrogen polysiloxane (1-C1) having SiH groups in the side chain as a crosslinking agent [viscosity at 25 ° C.
- the first liquid silicone rubber composition does not contain an adhesion-imparting component (1-B1) having a phenylene skeleton [SiH group in (1-C1) / (1-A1) and (1-A2)]
- cured material property hardness, tensile strength, elongation at the time of cutting
- the surface slipperiness was evaluated by measuring the dynamic friction coefficient under the following conditions. That is, in accordance with ASTM D1894, the dynamic friction coefficient was measured using a surface property measuring machine TYPE: 14FW (manufactured by Shinto Kagaku Co., Ltd.) under the conditions of a load of 100 gf and a tensile speed of 500 mm / min. Those with 5 or less were evaluated as good slipperiness ( ⁇ ), and those with a dynamic friction coefficient exceeding 0.5 were evaluated as poor slipperiness ( ⁇ ). ⁇ Evaluation> ⁇ : Good surface slipping ⁇ : Poor surface slipping
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Abstract
Description
〔1〕
布基材の少なくとも一方の表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、該組成物を硬化して第1の被覆層を形成したのち、該第1の被覆層の外表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成することを特徴とする布基材成形物の製造方法。
〔2〕
剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成したのち、該第2の被覆層の外表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、その上から布基材を積層し、前記液状シリコーンゴム組成物を硬化して第1の被覆層を形成することを特徴とする布基材成形物の製造方法。
〔3〕
布基材の少なくとも一方の表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、該組成物を硬化して第1の被覆層を形成すると共に、剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、上記第1の被覆層上に上記シリコーンレジンを含有するシリコーンゴム組成物の塗布面を貼り合わせ、次いで該シリコーンゴム組成物を硬化して第1の被覆層上に第2の被覆層を形成することを特徴とする布基材成形物の製造方法。
〔4〕
第1の被覆層に用いられる液状シリコーンゴム組成物が、
(1-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有し、23℃における粘度が0.1~2,000Pa・sであるオルガノポリシロキサン 100質量部、
(1-B)一分子中に少なくとも1個のケイ素原子と結合する水素原子を有し、かつ少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を有するケイ素原子数1~100の有機ケイ素化合物 0.1~30質量部、
(1-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有し、アリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しないオルガノハイドロジェンポリシロキサン 0~20質量部、
(1-D)補強性シリカ微粉末 0~100質量部、
(1-E)付加反応触媒 触媒量
を含有してなり、
第2の被覆層に用いられるシリコーンゴム組成物が、
(2-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサン 100質量部、
(2-B)R3SiO1/2単位(式中、Rは独立に非置換又は置換の炭素原子数1~6の1価炭化水素基を表す)及びSiO4/2単位からなり、SiO4/2単位1モルに対するR3SiO1/2単位のモル数が0.5~1.5モルであり、更にR2SiO2/2単位及びRSiO3/2単位(前記各式中、Rは前記のとおり)を、SiO4/2単位1モルに対し、それぞれ0~1.0モル有していてもよいシリコーンレジン 1~300質量部、
(2-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有するオルガノハイドロジェンポリシロキサン 0.1~50質量部、
(2-D)付加反応触媒 触媒量
を含有してなるものである〔1〕~〔3〕のいずれかに記載のシリコーンゴムで被覆された布基材成形物の製造方法。
〔5〕
(1-B)成分が、一分子中に少なくとも1個のケイ素原子と結合する水素原子と、一分子中に少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基と、エポキシ基、アルコキシシリル基、エステル基、アクリル基、メタクリル基、無水カルボキシ基、イソシアネート基、アミノ基及びアミド基から選ばれる1種又は2種以上の官能基とを含有するケイ素原子数1~100の有機ケイ素化合物である〔4〕に記載のシリコーンゴムで被覆された布基材成形物の製造方法。
〔6〕
第1の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である〔1〕~〔5〕のいずれかに記載のシリコーンゴムで被覆された布基材成形物の製造方法。
〔7〕
第2の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である〔1〕~〔6〕のいずれかに記載のシリコーンゴムで被覆された布基材成形物の製造方法。
〔8〕
布基材の表面にシリコーンゴム被覆層として第1の被覆層が形成され、この第1の被覆層上に第2の被覆層が積層された人工皮革様シート成形物であって、
第1の被覆層が、接着性付与成分を含有する液状シリコーンゴム組成物の硬化物であり、
第2の被覆層が、シリコーンレジンを含有するシリコーンゴム組成物の硬化物であることを特徴とする人工皮革様シート成形物。
〔9〕
第1の被覆層に用いられる液状シリコーンゴム組成物が、
(1-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有し、23℃における粘度が0.1~2,000Pa・sであるオルガノポリシロキサン 100質量部、
(1-B)一分子中に少なくとも1個のケイ素原子と結合する水素原子を有し、かつ少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を有するケイ素原子数1~100の有機ケイ素化合物 0.1~30質量部、
(1-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有し、アリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しないオルガノハイドロジェンポリシロキサン 0~20質量部、
(1-D)補強性シリカ微粉末 0~100質量部、
(1-E)付加反応触媒 触媒量
を含有してなり、
第2の被覆層に用いられるシリコーンゴム組成物が、
(2-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサン 100質量部、
(2-B)R3SiO1/2単位(式中、Rは独立に非置換又は置換の炭素原子数1~6の1価炭化水素基を表す)及びSiO4/2単位からなり、SiO4/2単位1モルに対するR3SiO1/2単位のモル数が0.5~1.5モルであり、更にR2SiO2/2単位及びRSiO3/2単位(前記各式中、Rは前記のとおり)を、SiO4/2単位1モルに対し、それぞれ0~1.0モル有していてもよいシリコーンレジン 1~300質量部、
(2-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有するオルガノハイドロジェンポリシロキサン 0.1~50質量部、
(2-D)付加反応触媒 触媒量
を含有してなるものである〔8〕に記載の人工皮革様シート成形物。
〔10〕
(1-B)成分が、一分子中に少なくとも1個のケイ素原子と結合する水素原子と、一分子中に少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基と、エポキシ基、アルコキシシリル基、エステル基、アクリル基、メタクリル基、無水カルボキシ基、イソシアネート基、アミノ基及びアミド基から選ばれる1種又は2種以上の官能基とを含有するケイ素原子数1~100の有機ケイ素化合物である〔9〕に記載の人工皮革様シート成形物。
〔11〕
第1の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である〔8〕~〔10〕のいずれかに記載の人工皮革様シート成形物。
〔12〕
第2の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である〔8〕~〔11〕のいずれかに記載の人工皮革様シート成形物。
本発明のシリコーンゴムで被覆された布基材成形物の製造方法は、布基材の少なくとも一方の表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、該組成物を硬化して第1の被覆層を形成したのち、該第1の被覆層の外表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成すること、或いは、剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成したのち、該第2の被覆層の外表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、その上から布基材を積層し、前記液状シリコーンゴム組成物を硬化して第1の被覆層を形成することを特徴とする。
またこの場合、布基材の少なくとも一方の表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、該組成物を硬化して第1の被覆層を形成すると共に、剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、上記第1の被覆層上に上記シリコーンレジンを含有するシリコーンゴム組成物の塗布面を貼り合わせ、次いで該シリコーンゴム組成物を硬化して第1の被覆層上に第2の被覆層を形成してもよい。
(1-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサン、
(1-B)一分子中に少なくとも1個のケイ素原子と結合する水素原子を有し、かつ少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を有するケイ素原子数1~100の有機ケイ素化合物、
(1-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有し、アリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しないオルガノハイドロジェンポリシロキサン、
(1-D)補強性シリカ微粉末、
(1-E)付加反応触媒。
(1-A)成分は、一分子中に少なくとも平均2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサンであり、液状シリコーンゴム組成物の主剤(ベースポリマー)として作用するものであって、下記平均組成式(I)で示されるものを用いることができる。
R1 aSiO(4-a)/2 (I)
(式中、R1は互いに同一又は異種の炭素原子数1~10、好ましくは1~8の非置換又は置換の1価炭化水素基であり、aは1.5~2.8、好ましくは1.8~2.5、より好ましくは1.95~2.05の範囲の正数である。)
なお、アルケニル基の含有量は、オルガノポリシロキサン中1.0×10-6~10.0×10-4mol/g、特に1.0×10-5~8.0×10-4mol/gとすることが好ましい。アルケニル基の量が1.0×10-6mol/gより少ないとゴム硬度が低すぎてゲル状になってしまう場合があり、また10.0×10-4mol/gより多いと架橋密度が高くなりすぎて、硬度の高いゴムになってしまう場合がある。このアルケニル基は、分子鎖末端のケイ素原子に結合していても、分子鎖途中のケイ素原子に結合していても、両者に結合していてもよい。
また、23℃における粘度が0.1~2,000Pa・s、特に0.5~500Pa・sであることが好ましい。なお、本発明において、粘度は、回転粘度計(BL型、BH型、BS型、コーンプレート型、レオメータ等)により測定できる(以下、同じ)。
(1-B)成分は、接着性付与成分で、一分子中に少なくとも1個のケイ素原子と結合する水素原子(即ち、SiH基)を有し、かつ少なくとも1個のアリーレン骨格あるいは該アリーレン骨格から水素原子が1~2個脱離した3~4価の基(通常、2~4価の芳香族環骨格)を有するケイ素原子数1~100、好ましくは2~30の有機ケイ素化合物である。
(Rw,Rxは上記と同様であり、y=0~100である。)から選ばれる基であり、Y’は
(Rw,Rx,q,hは上記と同様である。)である。z=1~10である。〕
(1-C)成分は、一分子中に少なくとも2個、好ましくは3個以上のケイ素原子と結合した水素原子(SiH基)を含有し、アリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しない(即ち、(1-B)成分とは異なる)オルガノハイドロジェンポリシロキサンであり、下記平均組成式(II)で示される従来から公知のオルガノハイドロジェンポリシロキサンが適用可能である。
R2 bHcSiO(4-b-c)/2 (II)
bは0.7~2.1、cは0.01~1.0、かつb+cは0.8~3.0、好ましくはbは0.8~2.0、cは0.10~1.0、より好ましくは0.18~1.0、更に好ましくは0.2~1.0、かつb+cは1.0~2.5を満足する正数で示される。
(1-D)成分は、補強性シリカ微粉末であり、該補強性シリカ微粉末はシリカの種類に特に限定はなく、通常ゴムの補強材として使用されるものであればよい。その補強性シリカ微粉末としては、従来のシリコーンゴム組成物に使用されているものを使用できるが、特にはBET法による比表面積が50m2/g以上である補強性シリカ微粉末を用いる。特にBET法による比表面積が50~400m2/gの沈澱シリカ、ヒュームドシリカ、焼成シリカなどが好適に使用される。ゴム強度を向上するには、ヒュームドシリカが好適である。
また、上記補強性シリカ微粉末(1-D)の表面疎水化処理は、液状シリコーンゴム組成物を調製する途中の工程において、(1-A)成分のアルケニル基含有オルガノポリシロキサン(ベースポリマー)と表面未処理の補強性シリカ微粉末とを表面処理剤と共に加熱下に均一に混合することによって、該組成物の調製と同時に(in situ)表面疎水化処理を行ってもよい。
処理剤の配合量は、その処理剤の被覆面積から計算される量以上であればよい。
(1-E)成分は付加反応触媒であり、該付加反応触媒としては、白金黒、塩化第二白金、塩化白金酸と1価アルコールとの反応物、塩化白金酸とオレフィン類との錯体、白金ビスアセトアセテート等の白金系触媒、パラジウム系触媒、ロジウム系触媒等の白金族金属触媒が挙げられる。
この付加反応触媒の添加量は触媒量であり、通常(1-A)成分に対して白金、パラジウム又はロジウム金属等の白金族金属の質量換算として0.1~1,000ppm、特に1~200ppmである。
第2の被覆層は、布基材表面上にコート、形成した第1の被覆層の外表面上にコートされる成分であり、この第2の被覆層に用いられるシリコーンゴム組成物には、シリコーンレジン成分(三次元網状構造のシリコーン樹脂成分)を含有するシリコーンゴム組成物が用いられる。第2の被覆層の目的は、表面タックを無くし、表面に滑り性を付与することを目的に使用される。第2の被覆層としては、以下に示される(2-A)~(2-D)成分を含有してなるシリコーンゴム組成物を用いることができる。
(2-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサン、
(2-B)R3SiO1/2単位(式中、Rは独立に非置換又は置換の炭素原子数1~6の1価炭化水素基を表す)及びSiO4/2単位からなり、SiO4/2単位1モルに対するR3SiO1/2単位のモル数が0.5~1.5モルであり、更にR2SiO2/2単位及びRSiO3/2単位(前記各式中、Rは前記のとおり)を、SiO4/2単位1モルに対し、それぞれ0~1.0モル有していてもよいシリコーンレジン、
(2-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有するオルガノハイドロジェンポリシロキサン、
(2-D)付加反応触媒。
(2-A)成分は、一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサンであり、第1の被覆層に用いられる液状シリコーンゴム組成物の(1-A)成分と同様なオルガノポリシロキサンとすることができる。
(2-B)成分は、R3SiO1/2単位(式中、Rは独立に非置換又は置換の炭素原子数1~6の1価炭化水素基を表す)及びSiO4/2単位からなり、SiO4/2単位1モルに対するR3SiO1/2単位のモル数が0.5~1.5モルであり、更にR2SiO2/2単位及び/又はRSiO3/2単位(前記各式中、Rは前記のとおり)を、SiO4/2単位1モルに対し、それぞれ0~1.0モル、好ましくは0~0.5モル、より好ましくは0~0.3モル有していてもよい、シリコーンレジン(三次元網状(樹脂状)構造のオルガノポリシロキサン)である。
上記有機溶媒としては、共加水分解・縮合反応により生成するオルガノポリシロキサンを溶解することのできるものが好ましく、典型的には、トルエン、キシレン、ナフサミネラルスピリット等を挙げることができる。上記(2-B)成分に係る各単位の含有モル比については、例えば、各単位に対応するシラン化合物の仕込み量(モル比)を調整することによって適宜設定することができる。
(2-C)成分は、一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有するオルガノハイドロジェンポリシロキサンであり、第1の被覆層に用いられる液状シリコーンゴム組成物の(1-C)成分と同様な(即ち、分子中にアリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しない)オルガノハイドロジェンポリシロキサンとすることができる。
(2-D)成分は、付加反応触媒であり、第1の被覆層に用いられる液状シリコーンゴム組成物の(1-E)成分と同様な付加反応触媒とすることができる。
(2-D)成分の添加量は、触媒量であり、通常、(2-A)成分に対して白金、パラジウム又はロジウム金属等の白金族金属の質量換算として0.1~1,000ppm、特に1~200ppmである。
或いは、第2の製造方法として、剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成したのち、該第2の被覆層の外表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、その上から布基材を積層し、前記液状シリコーンゴム組成物を硬化して第1の被覆層を形成する方法を採用し得る。
これにより硬化塗膜の表面滑り性が飛躍的に向上し、布基材との接着性も良好であり、かつ硬化塗膜は伸びを有するため、割れ、クラックも生じない積層された布基材成形物を得ることができる。上記方法により製造された布基材成形物は、表面にシリコーンゴム被覆層が積層された人工皮革様シート成形物などとして好適に使用し得る。
ここで、液状シリコーンゴム組成物の塗布方法は、刷毛塗り、スプレー、ディップ等、業界公知の塗布方法で塗布することができる。塗布するコーティング層の厚さは任意であるが、通常、1~1,000μm程度の厚さとなるように塗布される。
ここで、シリコーンゴム組成物の塗布、積層方法は任意であるが、第3の製造方法として、剥離紙の上に第2の被覆層に用いられるシリコーンゴム組成物を塗布した後に、これを第1の被覆層が積層された布の上に貼り合わせた後に硬化させる方法等も好適に用いられる。
貼り合わせた後の硬化条件は任意であるが、第1の被覆層の硬化と同様な条件が選択され、50~200℃、特に100~150℃で、1~20分程度加熱することにより行われる。
また、剥離紙としては、紙とポリプロピレン、ポリテトラフルオロエチレン、ポリエチレンテレフタレートと等が用いられる。なお、剥離紙は、使用時には剥離、除去される。
PET繊維からなる布基材の表面に、下記の接着性付与成分を含有する第1の液状シリコーンゴム組成物を、厚さが100μmとなる量塗布した後、120℃/5分間の乾燥機中で加熱硬化した。
次いで、下記のシリコーンレジンを含有する第2のシリコーンゴム組成物を、離型紙上に50μmの厚さとなるように塗布した。この離型紙に塗布された第2のシリコーンゴム組成物層と、前記の布基材上に第1の液状シリコーンゴム組成物を塗布、加熱硬化した面とを貼り合わせた。貼り合わせたものを乾燥機中で120℃/5分間硬化させて、シリコーンゴムが積層されたPET繊維布基材を得た。
分子鎖両末端がジメチルビニルシロキシ基で封鎖された23℃の粘度が30Pa・s(平均重合度約750)であるジメチルポリシロキサン(1-A1)[ビニル基含有量3×10-5mol/g]84部、分子鎖両末端がトリメチルシロキシ基で封鎖された平均重合度が約230であり、側鎖(分子鎖途中)に5モル%のビニルメチルシロキサン単位を含有するジメチルポリシロキサン(1-A2)[ビニル基含有量6.5×10-4mol/g]5部、BET比表面積が300m2/gである表面未処理のヒュームドシリカ(1-D1)(日本アエロジル(株)製、アエロジル300)40部、表面疎水化処理剤としてヘキサメチルジシラザン8部、水2部を室温(25℃)で30分間混合後、150℃に昇温し、3時間撹拌を続けた後、冷却し、ヒュームドシリカの表面疎水化処理を行うと共にシリコーンゴムベースを得た。
このシリコーンゴムベース129部、分子鎖両末端がジメチルビニルシロキシ基で封鎖された23℃の粘度が30Pa・s(平均重合度約750)であるジメチルポリシロキサン(1-A1)[ビニル基含有量3×10-5mol/g]40部、架橋剤として側鎖にSiH基を有するメチルハイドロジェンポリシロキサン(1-C1)[25℃における粘度0.010Pa・s、一分子当たりのSiH基数34個(SiH基量0.0050mol/g)の両末端トリメチルシロキシ基封鎖ジメチルシロキサン・メチルハイドロジェンシロキサン共重合体]2.4部、下記式(1)で示されるフェニレン骨格を有する接着性付与成分(1-B1)(SiH基量0.0066mol/g)2.0部[(1-C1)及び(1-B1)中の合計SiH基/(1-A1)及び(1-A2)中の合計ビニル基=2.8モル/モル]、反応制御剤としてエチニルシクロヘキサノール0.10部、及び白金触媒(1-E1)(Pt濃度1質量%)0.2部を均一に約30分間混合し、液状シリコーンゴム組成物(23℃の粘度;400Pa・s)を得た。
分子鎖両末端がジメチルビニルシロキシ基で封鎖された23℃の粘度が30Pa・s(平均重合度約750)であるジメチルポリシロキサン(2-A1)[ビニル基含有量3×10-5mol/g]84部、(CH3)3SiO1/2単位、(CH2=CH)(CH3)2SiO1/2単位、SiO4/2単位からなり、モル比:(CH3)3SiO1/2/(CH2=CH)(CH3)2SiO1/2/SiO4/2が40/10/50であって、ビニル基含有量が0.00054mol/gである三次元網状構造のオルガノポリシロキサン樹脂(数平均分子量30,000)(2-B1)84部、架橋剤として側鎖にSiH基を有するメチルハイドロジェンポリシロキサン(2-C1)[23℃における粘度20mPa・s、一分子当たりのSiH基数40個(SiH基含有量0.016mol/g)の両末端トリメチルシロキシ基封鎖メチルハイドロジェンポリシロキサン]14.5部[(2-C1)中のSiH基/(2-A1)及び(2-B1)中の合計ビニル基=3.5モル/モル]、反応制御剤としてエチニルシクロヘキサノール0.10部、及び白金触媒(Pt濃度1質量%)0.2部を均一に約30分間混合し、シリコーンゴム組成物(23℃の粘度;35Pa・s)を得た。
第2のシリコーンゴム組成物において、オルガノポリシロキサン樹脂(2-B1)に代えて、(CH3)3SiO1/2単位、(CH2=CH)(CH3)2SiO1/2単位、SiO4/2単位からなり、モル比:(CH3)3SiO1/2/(CH2=CH)(CH3)2SiO1/2/SiO4/2が40/5/55である三次元網状構造のオルガノポリシロキサン樹脂(2-B2)[数平均分子量5,000、ビニル基含有量;0.00027mol/g]100部[(2-C1)中のSiH基/(2-A1)及び(2-B2)中の合計ビニル基=6.9モル/モル]を用いた以外は、実施例1と同様な方法により、シリコーンゴムが積層されたPET繊維布基材を得た。
第1の液状シリコーンゴム組成物中のフェニレン骨格を有する接着性付与成分(1-B1)を含有しない[(1-C1)中のSiH基/(1-A1)及び(1-A2)中の合計ビニル基=1.8モル/モル]以外は、実施例1と同様な方法により、シリコーンゴムが積層されたPET繊維布基材を得た。
第2のシリコーンゴム組成物中のオルガノポリシロキサン樹脂(2-B1)の代わりに、分子鎖両末端がジメチルビニルシロキシ基で封鎖された23℃の粘度が30Pa・s(平均重合度約750)であるジメチルポリシロキサン(2-A1)[ビニル基含有量3×10-5mol/g]を更に84部(合計で168部)、架橋剤として側鎖にSiH基を有するメチルハイドロジェンポリシロキサン(2-C1)[23℃における粘度20mPa・s、一分子当たりのSiH基数40個(SiH基含有量0.016mol/g)の両末端トリメチルシロキシ基封鎖メチルハイドロジェンポリシロキサン]0.56部[(2-C1)中のSiH基/(2-A1)中のビニル基=3.0モル/モル]を用いた他は、実施例1と同様な方法により、シリコーンゴムが積層されたPET繊維布基材を得た。
また、得られたPET繊維布基材について、布基材との接着性及び表面滑り性を下記評価方法により測定し、下記評価基準により評価した。結果を表1に併記する。
なお、第1のシリコーンゴム組成物の硬化物の硬度は、いずれの実施例、比較例の場合もデュロメータータイプAで52であった。
〔布基材との接着性〕
接着性試験は、以下の条件にてスコット揉み試験機を用いて行った。即ち、上記のゴムコーティングした布基材について、押し圧力5kgfで10回の揉み試験を行った後、コーティング部分の破壊状況を目視で確認し、シリコーンゴムコーティング層が布基材から剥離していない場合を合格(○:接着)と評価し、剥離している場合を不合格(×:剥離)と評価した。
〈評価〉
○:接着
×:剥離(シリコーン層と基布の間で剥離)
表面の滑り性は、以下の条件にて動摩擦係数を測定することにより評価した。即ち、ASTM D1894に準拠して、表面性測定機TYPE:14FW(新東科学(株)製)を用い、荷重100gf、引張速度500mm/分の条件で動摩擦係数を測定し、動摩擦係数が0.5以下のものは滑り性良好(○)と評価し、動摩擦係数が0.5を超えるものは滑り性不良(×)と評価した。
〈評価〉
○:表面の滑り性が良好
×:表面の滑り性が不良
Claims (12)
- 布基材の少なくとも一方の表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、該組成物を硬化して第1の被覆層を形成したのち、該第1の被覆層の外表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成することを特徴とする布基材成形物の製造方法。
- 剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、該組成物を硬化して第2の被覆層を形成したのち、該第2の被覆層の外表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、その上から布基材を積層し、前記液状シリコーンゴム組成物を硬化して第1の被覆層を形成することを特徴とする布基材成形物の製造方法。
- 布基材の少なくとも一方の表面上に、接着性付与成分を含有する液状シリコーンゴム組成物を塗布し、該組成物を硬化して第1の被覆層を形成すると共に、剥離紙表面上に、シリコーンレジンを含有するシリコーンゴム組成物を塗布し、上記第1の被覆層上に上記シリコーンレジンを含有するシリコーンゴム組成物の塗布面を貼り合わせ、次いで該シリコーンゴム組成物を硬化して第1の被覆層上に第2の被覆層を形成することを特徴とする布基材成形物の製造方法。
- 第1の被覆層に用いられる液状シリコーンゴム組成物が、
(1-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有し、23℃における粘度が0.1~2,000Pa・sであるオルガノポリシロキサン 100質量部、
(1-B)一分子中に少なくとも1個のケイ素原子と結合する水素原子を有し、かつ少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を有するケイ素原子数1~100の有機ケイ素化合物 0.1~30質量部、
(1-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有し、アリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しないオルガノハイドロジェンポリシロキサン 0~20質量部、
(1-D)補強性シリカ微粉末 0~100質量部、
(1-E)付加反応触媒 触媒量
を含有してなり、
第2の被覆層に用いられるシリコーンゴム組成物が、
(2-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサン 100質量部、
(2-B)R3SiO1/2単位(式中、Rは独立に非置換又は置換の炭素原子数1~6の1価炭化水素基を表す)及びSiO4/2単位からなり、SiO4/2単位1モルに対するR3SiO1/2単位のモル数が0.5~1.5モルであり、更にR2SiO2/2単位及びRSiO3/2単位(前記各式中、Rは前記のとおり)を、SiO4/2単位1モルに対し、それぞれ0~1.0モル有していてもよいシリコーンレジン 1~300質量部、
(2-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有するオルガノハイドロジェンポリシロキサン 0.1~50質量部、
(2-D)付加反応触媒 触媒量
を含有してなるものである請求項1~3のいずれか1項に記載のシリコーンゴムで被覆された布基材成形物の製造方法。 - (1-B)成分が、一分子中に少なくとも1個のケイ素原子と結合する水素原子と、一分子中に少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基と、エポキシ基、アルコキシシリル基、エステル基、アクリル基、メタクリル基、無水カルボキシ基、イソシアネート基、アミノ基及びアミド基から選ばれる1種又は2種以上の官能基とを含有するケイ素原子数1~100の有機ケイ素化合物である請求項4に記載のシリコーンゴムで被覆された布基材成形物の製造方法。
- 第1の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である請求項1~5のいずれか1項に記載のシリコーンゴムで被覆された布基材成形物の製造方法。
- 第2の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である請求項1~6のいずれか1項に記載のシリコーンゴムで被覆された布基材成形物の製造方法。
- 布基材の表面にシリコーンゴム被覆層として第1の被覆層が形成され、この第1の被覆層上に第2の被覆層が積層された人工皮革様シート成形物であって、
第1の被覆層が、接着性付与成分を含有する液状シリコーンゴム組成物の硬化物であり、
第2の被覆層が、シリコーンレジンを含有するシリコーンゴム組成物の硬化物であることを特徴とする人工皮革様シート成形物。 - 第1の被覆層に用いられる液状シリコーンゴム組成物が、
(1-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有し、23℃における粘度が0.1~2,000Pa・sであるオルガノポリシロキサン 100質量部、
(1-B)一分子中に少なくとも1個のケイ素原子と結合する水素原子を有し、かつ少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を有するケイ素原子数1~100の有機ケイ素化合物 0.1~30質量部、
(1-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有し、アリーレン骨格及び該アリーレン骨格から水素原子が1~2個脱離した3~4価の基を含有しないオルガノハイドロジェンポリシロキサン 0~20質量部、
(1-D)補強性シリカ微粉末 0~100質量部、
(1-E)付加反応触媒 触媒量
を含有してなり、
第2の被覆層に用いられるシリコーンゴム組成物が、
(2-A)一分子中に少なくとも2個のケイ素原子と結合するアルケニル基を含有するオルガノポリシロキサン 100質量部、
(2-B)R3SiO1/2単位(式中、Rは独立に非置換又は置換の炭素原子数1~6の1価炭化水素基を表す)及びSiO4/2単位からなり、SiO4/2単位1モルに対するR3SiO1/2単位のモル数が0.5~1.5モルであり、更にR2SiO2/2単位及びRSiO3/2単位(前記各式中、Rは前記のとおり)を、SiO4/2単位1モルに対し、それぞれ0~1.0モル有していてもよいシリコーンレジン 1~300質量部、
(2-C)一分子中に少なくとも2個のケイ素原子と結合する水素原子を含有するオルガノハイドロジェンポリシロキサン 0.1~50質量部、
(2-D)付加反応触媒 触媒量
を含有してなるものである請求項8に記載の人工皮革様シート成形物。 - (1-B)成分が、一分子中に少なくとも1個のケイ素原子と結合する水素原子と、一分子中に少なくとも1個のアリーレン骨格及び/又は該アリーレン骨格から水素原子が1~2個脱離した3~4価の基と、エポキシ基、アルコキシシリル基、エステル基、アクリル基、メタクリル基、無水カルボキシ基、イソシアネート基、アミノ基及びアミド基から選ばれる1種又は2種以上の官能基とを含有するケイ素原子数1~100の有機ケイ素化合物である請求項9に記載の人工皮革様シート成形物。
- 第1の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である請求項8~10のいずれか1項に記載の人工皮革様シート成形物。
- 第2の被覆層に用いられるシリコーンゴム組成物の硬化物が、JIS K6249に基づいて測定したデュロメーターA硬度計による硬度が50以上である請求項8~11のいずれか1項に記載の人工皮革様シート成形物。
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| PCT/JP2015/084549 Ceased WO2016093281A1 (ja) | 2014-12-12 | 2015-12-09 | シリコーンゴムで被覆された布基材成形物の製造方法及び人工皮革様シート成形物 |
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| US (1) | US20180355552A1 (ja) |
| EP (1) | EP3231606A4 (ja) |
| JP (1) | JP6323569B2 (ja) |
| KR (1) | KR102392412B1 (ja) |
| CN (1) | CN107000394B (ja) |
| TW (1) | TWI683868B (ja) |
| WO (1) | WO2016093281A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021508619A (ja) * | 2017-12-28 | 2021-03-11 | エルケム・シリコーンズ・シャンハイ・カンパニー・リミテッドElkem Silicones Shanghai Co.,Ltd. | 低tvoc放出性シリコーン複合シート |
| JP2021519382A (ja) * | 2018-04-02 | 2021-08-10 | エニーメディ インコーポレーテッド | 3d模型用のコーティング液組成物及びこれを用いた3d模型の製造方法 |
| JP2022132959A (ja) * | 2021-03-01 | 2022-09-13 | 株式会社ニッシリ | 布素材、布素材の製造装置および製造方法 |
| KR20230029191A (ko) * | 2021-08-24 | 2023-03-03 | 현대트랜시스 주식회사 | 인조가죽 시트 커버링 제조 방법 |
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| CN105625047A (zh) * | 2016-03-15 | 2016-06-01 | 惠州赛力珑新材料有限公司 | 一种多色有机硅合成革及制造工艺 |
| CN108559398A (zh) * | 2018-01-10 | 2018-09-21 | 广东天跃新材料股份有限公司 | 一种环境友好的硅橡胶皮革及其涂布工艺 |
| TWI668106B (zh) * | 2018-04-11 | 2019-08-11 | 厚生股份有限公司 | 複合式膠布及其製造方法 |
| KR102099263B1 (ko) * | 2019-02-25 | 2020-04-08 | 조맹상 | 슬립성 실리콘 수지 코팅 원단 및 이의 제조방법 |
| ES2902068T3 (es) | 2019-04-15 | 2022-03-24 | CHT Germany GmbH | Preparación de silicona adecuada para la preparación de un material compuesto multicapas |
| WO2020232568A1 (en) | 2019-05-17 | 2020-11-26 | Dow Silicones Corporation | Coating composition and its uses |
| CN110982275A (zh) * | 2019-12-16 | 2020-04-10 | 九牧厨卫股份有限公司 | 一种耐老化软硬复合密封条及其制备方法 |
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| CN115704189B (zh) * | 2021-08-05 | 2024-05-31 | 杭州希力高新材料科技有限公司 | 一种高透明有机硅涂布织物制备抗菌型印花硅胶革的方法 |
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- 2015-12-09 CN CN201580067480.6A patent/CN107000394B/zh active Active
- 2015-12-09 EP EP15866595.0A patent/EP3231606A4/en not_active Withdrawn
- 2015-12-09 JP JP2016563717A patent/JP6323569B2/ja active Active
- 2015-12-09 WO PCT/JP2015/084549 patent/WO2016093281A1/ja not_active Ceased
- 2015-12-09 US US15/534,942 patent/US20180355552A1/en not_active Abandoned
- 2015-12-09 KR KR1020177018776A patent/KR102392412B1/ko active Active
- 2015-12-11 TW TW104141736A patent/TWI683868B/zh active
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021508619A (ja) * | 2017-12-28 | 2021-03-11 | エルケム・シリコーンズ・シャンハイ・カンパニー・リミテッドElkem Silicones Shanghai Co.,Ltd. | 低tvoc放出性シリコーン複合シート |
| JP7058742B2 (ja) | 2017-12-28 | 2022-04-22 | エルケム・シリコーンズ・シャンハイ・カンパニー・リミテッド | 低tvoc放出性シリコーン複合シート |
| US12083783B2 (en) | 2017-12-28 | 2024-09-10 | Elkem Silicones Shanghai Co., Ltd. | Low TVOC release silicone composite sheet |
| JP2021519382A (ja) * | 2018-04-02 | 2021-08-10 | エニーメディ インコーポレーテッド | 3d模型用のコーティング液組成物及びこれを用いた3d模型の製造方法 |
| JP7111883B2 (ja) | 2018-04-02 | 2022-08-02 | エニーメディ インコーポレーテッド | 3d模型用のコーティング液組成物及びこれを用いた3d模型の製造方法並びに3d模型用のコーティング液組成物の製造方法 |
| JP2022132959A (ja) * | 2021-03-01 | 2022-09-13 | 株式会社ニッシリ | 布素材、布素材の製造装置および製造方法 |
| JP2022141873A (ja) * | 2021-03-01 | 2022-09-29 | 株式会社ニッシリ | 布素材、布素材の製造装置および製造方法 |
| JP7382669B2 (ja) | 2021-03-01 | 2023-11-17 | 株式会社ニッシリ | 布素材、布素材の製造装置および製造方法 |
| KR20230029191A (ko) * | 2021-08-24 | 2023-03-03 | 현대트랜시스 주식회사 | 인조가죽 시트 커버링 제조 방법 |
| KR102684769B1 (ko) | 2021-08-24 | 2024-07-11 | 현대트랜시스 주식회사 | 인조가죽 시트 커버링 제조 방법 |
| US12421656B2 (en) | 2021-08-24 | 2025-09-23 | Hyundai Transys Incorporated | Method for manufacturing artificial leather seat covering |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180355552A1 (en) | 2018-12-13 |
| TW201634616A (zh) | 2016-10-01 |
| TWI683868B (zh) | 2020-02-01 |
| JP6323569B2 (ja) | 2018-05-16 |
| EP3231606A4 (en) | 2018-08-01 |
| EP3231606A1 (en) | 2017-10-18 |
| CN107000394B (zh) | 2019-05-21 |
| KR102392412B1 (ko) | 2022-04-29 |
| CN107000394A (zh) | 2017-08-01 |
| KR20170097087A (ko) | 2017-08-25 |
| JPWO2016093281A1 (ja) | 2017-07-20 |
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