WO2021084923A1 - Composition de résine uréthanique, cuir synthétique et procédé de fabrication d'un cuir synthétique - Google Patents

Composition de résine uréthanique, cuir synthétique et procédé de fabrication d'un cuir synthétique Download PDF

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Publication number
WO2021084923A1
WO2021084923A1 PCT/JP2020/034211 JP2020034211W WO2021084923A1 WO 2021084923 A1 WO2021084923 A1 WO 2021084923A1 JP 2020034211 W JP2020034211 W JP 2020034211W WO 2021084923 A1 WO2021084923 A1 WO 2021084923A1
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urethane resin
resin composition
synthetic leather
mass
cross
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PCT/JP2020/034211
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English (en)
Japanese (ja)
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前田　亮
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Dic株式会社
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Priority to JP2021531396A priority Critical patent/JPWO2021084923A1/ja
Publication of WO2021084923A1 publication Critical patent/WO2021084923A1/fr

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    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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
    • D06N3/14—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 polyurethanes

Definitions

  • the present invention relates to a urethane resin composition, synthetic leather, and a method for producing synthetic leather.
  • Polyurethane resin is widely used in the production of synthetic leather (including artificial leather) because of its mechanical strength and good texture.
  • solvent-based urethane resins containing N, N-dimethylformamide (DMF) have been the mainstream.
  • de-DMF of urethane resin for each layer constituting synthetic leather there is a demand for de-DMF of urethane resin for each layer constituting synthetic leather. ..
  • Patent Document 1 a urethane resin composition in which urethane resin is dispersed in water has been widely studied.
  • the current products including the invention described in Patent Document 1 have a problem that their physical properties such as hydrolysis resistance and peel strength are inferior to those of solvent-based urethane resins.
  • the solvent-based urethane resin used for the adhesive layer of synthetic leather includes a type that is aged for about 2 days after laminating and a quick peeling type that can be laminated without aging.
  • a water-based urethane resin composition It was extremely difficult to impart immediate peelability.
  • An object to be solved by the present invention is to provide a urethane resin composition having excellent peel strength and quick peelability in a water-containing urethane resin composition.
  • an anionic urethane resin (A), a carbodiimide cross-linking agent (b1) and a poly-isocyanate cross-linking agent (b2) containing an aromatic polyisocyanate (a1) and a glycol compound (a2) having a molecular weight of less than 500 as essential raw materials are used.
  • a urethane resin composition containing a cross-linking agent (B) containing and water (C).
  • the present invention is a synthetic leather having at least a base cloth (i), an adhesive layer (ii), and a skin layer (iii), and the adhesive layer (ii) is formed by the urethane resin composition. It provides synthetic leather characterized by being made of.
  • the present invention also provides a method for producing synthetic leather, which comprises applying the urethane resin composition and laminating other layers before it is completely cured.
  • the urethane resin composition of the present invention contains water and is environmentally friendly. Further, the urethane resin composition is excellent in peel strength and quick peelability.
  • the urethane resin composition of the present invention can be suitably used for producing synthetic leather, and in particular, can be suitably used as an adhesive layer for synthetic leather.
  • the urethane resin composition of the present invention comprises an anionic urethane resin (A) containing an aromatic polyisocyanate (a1) and a glycol compound (a2) having a molecular weight of less than 500 as essential raw materials, a carbodiimide cross-linking agent (b1), and a polyisocyanate. It contains a cross-linking agent (B) containing a cross-linking agent (b2) and water (C).
  • the anionic urethane resin (A) uses an aromatic polyisocyanate (a1) and a glycol compound (a2) having a molecular weight of less than 500 as essential raw materials.
  • aromatic polyisocyanate (a1) and the glycol compound (a2) which are hard segments with high crystallinity, excellent immediate peelability can be imparted.
  • aromatic polyisocyanate (a1) for example, phenylenediocyanate, toluene diisocyanate, diphenylmethane diisocyanate, naphthalenediocyanate, polymethylene polyphenyl polyisocyanate, carbodiimided diphenylmethane polyisocyanate and the like can be used.
  • aromatic polyisocyanates may be used alone or in combination of two or more.
  • diphenylmethane diisocyanate is preferable because it has high crystallinity and even more excellent immediate peelability can be obtained.
  • the glycol compound (a2) has a molecular weight of less than 500 (preferably in the range of 30 to 450), and is, for example, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-propanediol, butane. Diol, hexamethylene glycol and the like can be used. These compounds may be used alone or in combination of two or more. Among these, ethylene glycol and / or butanediol are preferable, and ethylene glycol is more preferable, from the viewpoint of high crystallinity and even more excellent immediate peeling property.
  • the molecular weight of the glycol cage (a2) indicates a value calculated from a chemical formula.
  • anionic urethane resin (A) examples include the aromatic polyisocyanate (a1), the glycol compound (a2), the polyol (a3), and a raw material (a4) for imparting an anionic group. ) Reactant can be used.
  • the polyol (a3) is other than the glycol compound (a2), and for example, a polycarbonate polyol, a polyether polyol, a polyester polyol, a polyacrylic polyol, or the like can be used. These polyols may be used alone or in combination of two or more. Among these, polycarbonate polyols and / or polyether polyols are preferable, and polycarbonate polyols and / or polytetramethylene glycol are preferable from the viewpoint of obtaining even more excellent peel strength, hydrolysis resistance, and heat resistance. Is more preferable.
  • the number average molecular weight of the polyol (a3) is preferably in the range of 500 to 100,000, preferably 700 to 100,000, from the viewpoint of obtaining even more excellent mechanical strength, peel strength, hydrolysis resistance, and heat resistance. A range of 10,000 is more preferred.
  • the number average molecular weight of the polyol (a3) indicates a value obtained by measuring under the following conditions by a gel permeation column chromatography (GPC) method.
  • Examples of the raw material (a4) for imparting the anionic group include 2,2-dimethylol propionic acid, 2,2-dimethylol butanoic acid, 2,2-dimethylol butyric acid, and 2,2-dimethylol propion.
  • the carboxyl group and the sulfonyl group may be partially or completely neutralized with a basic compound in the urethane resin composition.
  • a basic compound for example, organic amines such as ammonia, triethylamine, pyridine, and morpholine; alkanolamines such as monoethanolamine and dimethylethanolamine; and metal base compounds containing sodium, potassium, lithium, calcium and the like are used. Can be done.
  • the anionic urethane resin (A) is a reaction product of the aromatic polyisocyanate (a1), the glycol compound (a2), the polyol (a3), and the raw material (a4) for imparting an anionic group.
  • the raw material (a4) for imparting an anionic group may be used if necessary.
  • a chain extender having two or more amino groups and a molecular weight of less than 500 an aliphatic polyisocyanate, an alicyclic polyisocyanate, or the like can be used.
  • the amount of the components (a1) to (a4) used is preferably 50% by mass or more, more preferably 70% by mass or more, based on the total amount of the raw materials constituting the anionic urethane resin (A). 80% by mass or more is more preferable.
  • Examples of the chain extender having two or more amino groups and a molecular weight of less than 500 include ethylenediamine, 1,2-propanediamine, 1,6-hexamethylenediamine, piperazine, 2-methylpiperazin, and 2,5-. Dimethylpiperazin, isophorone diamine, 4,4'-dicyclohexylmethanediamine, 3,3'-dimethyl-4,4'-dicyclohexylmethanediamine, 1,2-cyclohexanediamine, 1,4-cyclohexanediamine, aminoethylethanolamine, Hydrazin, diethylenetriamine, triethylenetetramine and the like can be used. These chain extenders may be used alone or in combination of two or more. The molecular weight of the chain extender indicates a value calculated from a chemical formula.
  • aliphatic polyisocyanate for example, hexamethylene diisocyanate, lysine diisocyanate, dimerate diisocyanate and the like can be used. These polyisocyanates may be used alone.
  • alicyclic polyisocyanate for example, cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, norbornene diisocyanate and the like can be used. These polyisocyanates may be used alone or in combination of two or more.
  • Examples of the method for producing the anionic urethane resin (A) include a method in which the raw materials are collectively charged and reacted. Examples thereof include a method in which these reactions are carried out at a temperature of 50 to 100 ° C. for 3 to 10 hours.
  • the anionic urethane resin (A) it is preferable to inactivate the isocyanate groups remaining in the urethane resin (A).
  • inactivating the isocyanate group it is preferable to use an alcohol having a hydroxyl group such as methanol.
  • the amount used is preferably in the range of 0.001 to 10 parts by mass with respect to 100 parts by mass of the anionic urethane resin (A).
  • an organic solvent when producing the anionic urethane resin (A), an organic solvent may be used.
  • the organic solvent include ketone compounds such as acetone and methyl ethyl ketone; ether compounds such as tetrahydrofuran and dioxane; acetate compounds such as ethyl acetate and butyl acetate; nitrile compounds such as acetonitrile; dimethylformamide and N-methylpyrrolidone.
  • An amide compound or the like can be used.
  • These organic solvents may be used alone or in combination of two or more. It is preferable that the organic solvent is finally removed by a distillation method or the like.
  • the acid value of the anionic urethane resin (A) obtained by the above method is preferably 15 mgKOH / g, preferably 3 to 10 mgKOH / g, from the viewpoint of obtaining even more excellent hydrolysis resistance and flexibility.
  • the range of g is more preferable.
  • the method for measuring the acid value of the anionic urethane resin (A) will be described in Examples described later.
  • the concentration of the aromatic ring of the anionic urethane resin (A) is preferably in the range of 0.1 to 2.5 mmol / kg from the viewpoint of obtaining even more excellent peel strength, and is preferably 0.3.
  • the range of ⁇ 2.0 mmol / kg is more preferable.
  • the molecular weight of benzene or naphthalene having no substituent is used as the molecular weight of the aromatic ring.
  • the weight average molecular weight of the anionic urethane resin (A) is preferably in the range of 2,000 to 150,000, preferably 4,000 to 100,000, from the viewpoint of obtaining even more excellent peel strength. The range is more preferred, and the range of 6,000 to 70,000 is even more preferred.
  • the weight average molecular weight of the anionic urethane resin (A) indicates a value obtained by measuring under the following conditions by a gel permeation column chromatography (GPC) method.
  • the cross-linking agent (B) preferably contains a carbodiimide cross-linking agent (b1) and a polyisocyanate cross-linking agent (b2).
  • the carbodiimide cross-linking agent (b2) which has a very fast reactivity, imparts excellent immediate peeling property, and when used in combination with the polyisocyanate cross-linking agent (b2), which has a mild reaction, excellent peeling strength and quick peeling property are provided. Can be compatible with each other.
  • carbodiimide cross-linking agent (b1) examples include N, N'-dicyclohexylcarbodiimide, N, N'-diisopropylcarbodiimide, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide, and N- [3- (dimethyl).
  • a carbodiimide compound obtained by a known condensation reaction of polyisocyanate; a carbodiimide compound using polyisocyanate and polyalkylene oxide as raw materials can be used.
  • These carbodiimide cross-linking agents may be used alone or in combination of two or more.
  • Examples of the preferred carbodiimide cross-linking agent (b1) include “carbodilite V-02", “carbodilite V-02-L2", “carbodilite SV-02", “carbodilite V-10”, and “carbodilite” manufactured by Nisshinbo Chemical Co., Ltd. "SW-12G”, “Carbodilite E-02”, “Carbodilite E-03A”, “Carbodilite E-05” and the like can be obtained as commercial products.
  • polyisocyanate cross-linking agent (b2) examples include polyisocyanates such as tolylene diisocyanate, chlorophenylenediocyanate, hexamethylene diisocyanate, tetramethylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, and hydrogenated diphenylmethane diisocyanate; Trimethylol propane adducts; these isocyanurates; these bullets; water-dispersible polyisocyanate cross-linking agents and the like can be used.
  • a polyisocyanate cross-linking agent having water dispersibility from the viewpoint of obtaining even more excellent immediate peeling property and peeling strength.
  • the water-dispersible polyisocyanate cross-linking agent for example, a mixture of the polyisocyanate and a surfactant and emulsified can be used.
  • the surfactant include a surfactant having an anionic group such as a carboxyl group and a sulfonic acid group; a surfactant having a cationic group such as a tertiary amino group; and a nonionic property such as a polyoxyalkylene group.
  • a surfactant having a group or the like can be used. Among these, it is preferable to use a surfactant having an anionic group from the viewpoint of obtaining even more excellent water dispersion stability, immediate peeling property, and peeling strength.
  • water-dispersible polyisocyanate cross-linking agent examples include "Aquanate 100”, “Aquanate 110”, “Aquanate 200”, “Aquanate 210” (all manufactured by Tosoh Corporation), and “Baihijour TPLS”.
  • the amount of the cross-linking agent (B) used is preferably in the range of 0.1 to 10 parts by mass, more preferably in the range of 1 to 7 parts by mass with respect to 100 parts by mass of the anionic urethane resin (A).
  • the mass ratio [(b1) / (b2)] of the carbodiimide cross-linking agent (b1) and the polyisocyanate cross-linking agent (b2) is from the viewpoint that a more excellent balance between peel strength and immediate peelability can be obtained. , 95/5 to 30/70, more preferably 90/10 to 40/60.
  • cross-linking agent (B) other cross-linking agents can be used as needed, in addition to the above-mentioned (b1) and (b2).
  • the other cross-linking agent for example, a melamine cross-linking agent, an epoxy cross-linking agent, or the like can be used. These cross-linking agents may be used alone or in combination of two or more.
  • the total mass of (b1) and (b2) is preferably 50% by mass or more, more preferably 70% by mass or more, and further preferably 80% by mass or more in the cross-linking agent (B).
  • water (C) for example, ion-exchanged water, distilled water, or the like can be used. These waters may be used alone or in combination of two or more.
  • the urethane resin composition of the present invention contains the anionic urethane resin (A), the cross-linking agent (B), and the water (C) as essential picture components, but other additives may be used as necessary. You can say it.
  • Examples of the other additives include a urethanization catalyst, a neutralizing agent, a silane coupling agent, a thickener, a filler, a thixo-imparting agent, an antistatic agent, a wax, a heat stabilizer, a light-resistant stabilizer, and an optical brightener.
  • Whitening agent, foaming agent, pigment, dye, conductivity imparting agent, antistatic agent, moisture permeability improver, water repellent, oil repellent, hollow foam, flame retardant, water absorbing agent, moisture absorbing agent, deodorant, foam conditioning Agents, anti-blocking agents, anti-hydrolysis agents and the like can be used. These additives may be used alone or in combination of two or more.
  • the total mass of the anionic urethane resin (A) and the cross-linking agent (B) is preferably 50% by mass or more, preferably 55 to 65 parts by mass in the urethane resin composition. Within such a range, the urethane resin composition can appropriately soak into the base cloth (i), so that even more excellent peel strength can be obtained.
  • the urethane resin composition of the present invention contains water and is environmentally friendly. Further, the urethane resin composition is excellent in peel strength and quick peelability. Therefore, the urethane resin composition can be suitably used for producing synthetic leather, and in particular, can be suitably used as an adhesive layer for synthetic leather.
  • the synthetic leather has at least a base cloth (i), an adhesive layer (ii), and an epidermis layer (iii), and specific examples thereof include the following configurations.
  • Base cloth (i), adhesive layer (ii), epidermis layer (iii) (2) Base cloth (i), adhesive layer (ii), intermediate layer, epidermis layer (iii) (3) Base cloth (i), wet porous layer, adhesive layer (ii), epidermis layer (iii) (4) Base cloth (i), wet porous layer, adhesive layer (ii), intermediate layer, epidermis layer (iii)
  • Examples of the base cloth (i) include polyester fiber, polyethylene fiber, nylon fiber, acrylic fiber, polyurethane fiber, acetate fiber, rayon fiber, polylactic acid fiber, cotton, linen, silk, wool, glass fiber, carbon fiber, and the like. Non-woven fabrics, woven fabrics, knitting and the like made of these blended fibers can be used.
  • wet porous layer one formed by a known wet film forming method using a solvent-based urethane resin composition can be used.
  • the material for forming the intermediate layer and the skin layer (iii) for example, known water-based urethane resin, solvent-based urethane resin, solvent-free urethane resin, water-based acrylic resin, silicone resin, polypropylene resin, polyester resin and the like are used. Can be used. These resins may be used alone or in combination of two or more.
  • the thickness of the adhesive layer (ii) may be, for example, in the range of 30 to 60 ⁇ m.
  • the flow start temperature of the adhesive layer (ii), that is, the flow start temperature of the cured product of the urethane resin composition of the present invention is preferably 155 ° C. or higher from the viewpoint of obtaining even more excellent heat resistance. , 160-220 ° C. is more preferable.
  • the method for measuring the flow start temperature of the flow start temperature of the cured product of the urethane resin composition will be described in Examples described later.
  • a resin for forming a skin layer is applied onto a mold-released base material, dried and processed to obtain a skin layer (iii), and then the skin.
  • a method of applying the urethane resin composition of the present invention on the layer (iii) and laminating it with the base cloth (i) before the urethane resin composition is completely cured can be mentioned. These methods are called a wet lamination method or a semi-wet lamination method. By using such a method, even more excellent peel strength can be obtained.
  • Examples of the method of applying the urethane resin include a method using an applicator, a roll coater, a spray coater, a T-die coater, a knife coater, a comma coater, and the like.
  • the synthetic leather After producing the synthetic leather, for example, it may be aged at 30 to 100 ° C. for 1 to 10 days, if necessary.
  • MDI diphenylmethanediisocyanate
  • the urethane resin composition (X-2) containing the anionic urethane resin (A-2) (nonvolatile content; 60% by mass, of the anionic urethane (A-2) resin). Acid value; 10 mgKOH / g) was obtained.
  • Measuring device High-speed GPC device ("HLC-8220GPC” manufactured by Tosoh Corporation) Column: The following columns manufactured by Tosoh Corporation were connected in series and used. "TSKgel G5000" (7.8 mm ID x 30 cm) x 1 "TSKgel G4000” (7.8 mm ID x 30 cm) x 1 "TSKgel G3000" (7.8 mm ID x 30 cm) x 1 This "TSKgel G2000" (7.8 mm ID x 30 cm) x 1 Detector: RI (Differential Refractometer) Column temperature: 40 ° C Eluent: tetrahydrofuran (THF) Flow rate: 1.0 mL / min Injection amount: 100 ⁇ L (tetrahydrofuran solution with a sample concentration of 0.4% by mass) Standard sample: A calibration curve was prepared using the following standard polystyrene.
  • Examples 1 to 6 which are the urethane resin compositions of the present invention, are excellent in peel strength, immediate peeling property, hydrolysis resistance, and heat resistance.
  • Comparative Example 1 was an embodiment in which the polyisocyanate cross-linking agent (b2) was not used, but the peel strength was poor.
  • Comparative Example 2 was an embodiment in which the carbodiimide cross-linking agent (b1) was not used, but the immediate peelability was poor.
  • Comparative Example 3 is an embodiment in which an aromatic polyisocyanate (a1) and an anionic urethane resin not using the glycol compound (a1) as raw materials are used instead of the anionic urethane resin (A), but the quick peelability. , And the peel strength was poor.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'une composition de résine uréthanique qui contient de l'eau et a une excellente résistance au pelage et une aptitude au pelurage immédiate. L'invention concerne une composition de résine uréthanique caractérisée en ce qu'elle contient : une résine uréthanique anionique (A) contenant, en tant que matières premières essentielles, un polyisocyanate aromatique (a1) et un composé glycol (a2) ; un agent de réticulation (B) contenant un agent de réticulation carbodiimide (b1) et un agent de réticulation polyisocyanate (b2) ; et de l'eau (C). De plus, la présente invention concerne un cuir synthétique caractérisé en ce qu'il comprend au moins un tissu de base (i), une couche adhésive (ii) et une couche de peau (iii), la couche adhésive (ii) étant constituée de ladite composition de résine uréthanique.
PCT/JP2020/034211 2019-10-28 2020-09-10 Composition de résine uréthanique, cuir synthétique et procédé de fabrication d'un cuir synthétique WO2021084923A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210009875A1 (en) * 2018-03-20 2021-01-14 Dic Corporation Adhesive and synthetic leather
CN114606778A (zh) * 2022-03-16 2022-06-10 南通雄风服装有限公司 一种环保型可降解无纺布及其制备方法

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WO2015129602A1 (fr) * 2014-02-27 2015-09-03 東レ株式会社 Matériau en forme de feuille et procédé de production associé
WO2017061611A1 (fr) * 2015-10-08 2017-04-13 本田技研工業株式会社 Cuir de résine synthétique et son procédé de production
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