WO2023062981A1 - 積層体、及び、合成皮革 - Google Patents
積層体、及び、合成皮革 Download PDFInfo
- Publication number
- WO2023062981A1 WO2023062981A1 PCT/JP2022/033642 JP2022033642W WO2023062981A1 WO 2023062981 A1 WO2023062981 A1 WO 2023062981A1 JP 2022033642 W JP2022033642 W JP 2022033642W WO 2023062981 A1 WO2023062981 A1 WO 2023062981A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- urethane resin
- mass
- laminate
- epoxy compound
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- D—TEXTILES; PAPER
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- 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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- D06N3/06—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 by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
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- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
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- 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
- D06N3/146—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 characterised by the macromolecular diols used
-
- 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
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- D06N2209/1678—Resistive to light or to UV
-
- 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 laminates and synthetic leather.
- PVC leather In the vehicle interior leather market, highly cost-competitive polyvinyl chloride (PVC) leather is widely used. PVC leather is generally considered to have plasticizer bleeding and poor texture, so it is often coated with urethane resin (PU) as a skin layer or surface treatment layer (see, for example, Patent Document 1.).
- PU urethane resin
- the problem to be solved by the present invention is to provide a laminate of a thermoplastic resin layer and a film formed from a urethane resin composition containing water, which is excellent in bleeding resistance and heat discoloration resistance.
- the present invention has a thermoplastic resin layer and a film formed from a urethane resin composition containing a urethane resin (A) having a nonionic group, water (B), and an epoxy compound (C). It provides a laminate with features.
- the present invention also provides a synthetic leather comprising the laminate.
- the laminate of the present invention is a laminate of a thermoplastic resin layer and a film formed from a urethane resin composition containing water, and is excellent in bleeding resistance and heat discoloration resistance.
- the laminate of the present invention has a thermoplastic resin layer and a film formed from a specific urethane resin composition.
- thermoplastic resin layer for example, one formed of known polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, polystyrene, or the like can be used. In the present invention, even when polyvinyl chloride is used as the thermoplastic resin, it has excellent bleeding resistance and heat discoloration resistance.
- the film is formed from a urethane resin composition containing a urethane resin (A) having a nonionic group, water (B), and an epoxy compound (C).
- the urethane resin (A) it is essential to use a urethane resin having a nonionic group in order to obtain excellent bleeding resistance and heat discoloration resistance.
- a urethane resin having an anionic group into which a carboxyl group or a sulfonic acid group is introduced is used instead of the urethane resin (A)
- the carboxyl group itself or an amine compound that neutralizes the carboxyl group may be used.
- PVC deteriorates quickly under the influence. As a result, dehydrochlorination, which causes discoloration, is accelerated, causing further deterioration of PVC and decomposition of PU.
- the effect of the epoxy compound added as a hydrochloric acid scavenger is reduced, and discoloration cannot be suppressed.
- the urethane resin (A) having a nonionic group is not affected by neutralized amines or carboxylic acids, and the epoxy compound (C), which will be described later, sufficiently exhibits the hydrochloric acid-scavenging effect, thereby suppressing bleeding and discoloration. be able to.
- Examples of the method for obtaining the urethane resin (A) having the nonionic group include a method using a compound having an oxyethylene structure as a raw material.
- Examples of the compound having an oxyethylene structure include polyether polyols having an oxyethylene structure such as polyethylene glycol, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxytetramethylene glycol, and polyethylene glycol dimethyl ether. . These compounds may be used alone or in combination of two or more. Among these, it is preferable to use polyethylene glycol and/or polyethylene glycol dimethyl ether because the hydrophilicity can be controlled more easily.
- the number average molecular weight of the compound having an oxyethylene structure is in the range of 200 to 10,000 from the viewpoint of obtaining even better emulsifiability, bleeding resistance, heat discoloration resistance, and water dispersion stability. 300 to 3,000 is more preferred, 300 to 2,000 is more preferred, and 300 to 1,000 is particularly preferred. In addition, the number average molecular weight of the compound having the oxyethylene structure indicates a value measured by a gel permeation column chromatography (GPC) method.
- GPC gel permeation column chromatography
- urethane resin (A) specifically, for example, a reaction product of a chain extender (a1), a polyol (a2), a polyisocyanate (a3), and a compound having the oxyethylene structure can be used. can.
- chain extender (a1) those having a molecular weight of less than 500 (preferably in the range of 50 to 450) can be used.
- the chain can be easily extended even at a relatively low temperature of 30 ° C. or less, and the energy consumption during the reaction can be suppressed. From the point that film-forming properties, foam retention properties, texture, bleeding resistance, low-temperature flexibility, heat discoloration resistance, and peel strength can be obtained, and that high solidification of the urethane resin (A) is further facilitated, amino A chain extender having a group (hereinafter abbreviated as "amine-based chain extender”) is preferable, and further excellent foam retention, emulsifiability, low-temperature flexibility, texture, and water dispersion stability can be obtained.
- amine-based chain extender amino A chain extender having a group
- an amine-based chain extender having a molecular weight in the range of 30-250.
- the molecular weight indicates the average value, and the average value may be included in the preferred molecular weight range.
- the use ratio of the chain extender (a1) is such that even more excellent mechanical strength, film-forming properties, heat discoloration resistance, texture, peel strength, foam retention, emulsifiability, bleeding resistance, low-temperature flexibility, and , From the point that water dispersion stability can be obtained, and the point that the high solidification of the urethane resin (A) becomes easier, the range of 0.1 to 30% by mass of the total mass of the raw materials constituting the urethane resin (X) is more preferred, and a range of 0.5 to 10% by mass is particularly preferred.
- polyether polyol for example, polyether polyol, polyester polyol, polyacrylic polyol, polycarbonate polyol, polybutadiene polyol, etc.
- polyacrylic polyol for example, polycarbonate polyol, polybutadiene polyol, etc.
- polycarbonate polyol for example, polycarbonate polyol, polybutadiene polyol, etc.
- polybutadiene polyol polystylene glycol
- these polyols may be used alone or in combination of two or more.
- polyol (a2) those other than the said compound which has the said oxyethylene structure which provides the said nonionic group are used.
- the number average molecular weight of the polyol (a2) is preferably in the range of 500 to 100,000, more preferably in the range of 800 to 10,000, from the viewpoint of the mechanical strength of the resulting film.
- the number average molecular weight of the polyol (a2) is the value measured by gel permeation column chromatography (GPC).
- the use ratio of the polyol (a2) is 40 to 90% by mass in the total mass of the raw materials constituting the urethane resin (A) from the viewpoint of obtaining even better bleeding resistance, heat discoloration resistance, and mechanical strength. is more preferred, and a range of 50 to 80% by mass is particularly preferred.
- polyisocyanate (a3) examples include aromatic polyisocyanates such as phenylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, and carbodiimidized diphenylmethane polyisocyanate; hexamethylene diisocyanate, Aliphatic polyisocyanates such as lysine diisocyanate, cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, dimer acid diisocyanate, norbornene diisocyanate, or alicyclic polyisocyanates can be used. These polyisocyanates may be used alone or in combination of two or
- the proportion of the polyisocyanate (a3) used is 5 to 40 masses in the total mass of raw materials constituting the urethane resin (A) from the viewpoint of obtaining even better bleeding resistance, heat discoloration resistance, and mechanical strength. % range is more preferred, and a range of 10 to 35% by weight is particularly preferred.
- the proportion of the compound having an oxyethylene structure is selected from the viewpoint of obtaining even better foam retention, emulsifiability, water dispersion stability, low-temperature flexibility, heat discoloration resistance, and film-forming properties. It is preferably 5% by mass or less, more preferably 3% by mass or less, and still more preferably in the range of 0.25 to 3% by mass in the total mass of the raw materials constituting (A).
- the average particle size of the urethane resin (A) is, from the viewpoint of obtaining even better bleeding resistance, bubble retention, heat discoloration resistance, surface smoothness, texture, low-temperature flexibility, and film-forming properties, It is preferably in the range of 0.01 to 1 ⁇ m, more preferably in the range of 0.05 to 0.9 ⁇ m. A method for measuring the average particle size of the urethane resin (A) will be described later in Examples.
- the content of the urethane resin (A) in the urethane resin composition of the present invention is preferably 50-80% by mass, more preferably 50-70% by mass.
- the so-called urethane resin (A) solid content in the water dispersion is high, so even if the foam is mechanically foamed, the retention is even more excellent, and the drying property of the urethane resin composition is improved. / Or the crack resistance after drying is also excellent, and excellent texture, bleeding resistance, heat discoloration resistance, and low-temperature flexibility can be obtained.
- the polyol (a2), the polyisocyanate (a3), and the compound having an oxyethylene structure are reacted in the absence of a solvent to obtain a compound having an isocyanate group.
- a urethane prepolymer (i) is obtained (hereinafter abbreviated as the “prepolymer step”), then the urethane prepolymer (i) is dispersed in the water (hereinafter abbreviated as the “emulsification step”), and then and a step of reacting the chain extender (a1) to obtain the urethane resin (A) (hereinafter abbreviated as “chain extender step”).
- the prepolymer step is preferably carried out without a solvent.
- the prepolymer process was generally carried out in an organic solvent such as methyl ethyl ketone or acetone. It took several production days on site. In addition, it is difficult to completely distill off the organic solvent in the solvent removal step, and there are many cases in which a small amount of the organic solvent remains, making it difficult to completely respond to environmental concerns.
- the prepolymer in the absence of solvent, it is possible to obtain a urethane resin that is completely free of organic solvents and to save labor in the production process.
- the molar ratio [isocyanate group / (hydroxyl group and amino group)] is preferably in the range of 1.1 to 3, more preferably in the range of 1.2 to 2.
- reaction in the prepolymer step is carried out at 50 to 120°C for 1 to 10 hours.
- the emulsification step includes, for example, a reactor equipped with stirring blades; Kneaders such as; Homomixer, Static Mixer, Filmix, Ebara Milder, Clearmix, Ultra Turrax, Cavitron, Biomixer, and other rotary dispersion mixers; Ultrasonic dispersion equipment; Instead, it can be performed by using a device or the like that can mix by the flow of the fluid itself.
- Kneaders such as; Homomixer, Static Mixer, Filmix, Ebara Milder, Clearmix, Ultra Turrax, Cavitron, Biomixer, and other rotary dispersion mixers; Ultrasonic dispersion equipment; Instead, it can be performed by using a device or the like that can mix by the flow of the fluid itself.
- the emulsification step is preferably performed at a temperature at which water does not evaporate, for example, a range of 10 to 90° C.
- the emulsification step can be performed using the same equipment as the prepolymer step. .
- the isocyanate group of the urethane prepolymer (i) reacts with the chain elongation agent (a1) to increase the molecular weight of the urethane prepolymer (i) to obtain the urethane resin (A). It is a process.
- the temperature for the chain elongation step is preferably 50° C. or lower from the viewpoint of productivity.
- the molar ratio of the isocyanate group of the urethane prepolymer (i) to the sum of the hydroxyl groups and amino groups of the chain extender (a1) [(hydroxyl group and amino group)/isocyanate group] is preferably in the range of 0.8 to 1.1 from the viewpoint of obtaining even better low-temperature flexibility, heat discoloration resistance, crack resistance, film-forming properties, and mechanical strength. A range of 9 to 1 is more preferred.
- the chain elongation step can be performed using the same equipment as the prepolymer step.
- water (B) used in the present invention 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 epoxy compound (C) is essential for obtaining excellent bleeding resistance and heat discoloration resistance. It is believed that the epoxy group possessed by the epoxy compound has a hydrochloric acid scavenging effect and an amine scavenging effect, thereby suppressing discoloration.
- Examples of the epoxy compound (C) include butyl glycidyl ether, 2-ethylhexyl glycidyl ether, allyl glycidyl ether, glycidol, lauryl alcohol glycidyl ether, glycidyl ether of polyethylene glycol alcohol ether having 1 to 18 carbon atoms, phenyl glycidyl ether, Compounds having one epoxy group such as p-tert-butylphenyl glycidyl ether; polypropylene glycol diglycidyl ether, glycerol diglycidyl ether, glycerol polyglycidyl ether, polyglycerol polyglycidyl ether, trimethylolpropane polyglycidyl ether, sorbitol polyglycidyl ether ether, pentaerythritol polyglycidyl ether, resorcinol diglycidy
- Polyglycidyl ether ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, polytetramethylene glycol diglycidyl ether, polybutadiene diglycidyl ether, sorbitol polyglycidyl ether, polyglycerol polyglycidyl
- a compound having two or more epoxy groups such as ether can be used. These epoxy compounds may be used alone or in combination of two or more. Further, part of the structure of the above epoxy compound may be modified with a carbonate bond, a urethane bond, or a urea bond. Among these, those having no aromatic ring are preferable from the viewpoint of obtaining even more excellent resistance to heat discoloration.
- the number average molecular weight of the epoxy compound (C) is preferably 200 to 1,500, more preferably 250 to 1,000, from the viewpoint of obtaining even better bleeding resistance and heat discoloration resistance.
- the method for measuring the number average molecular weight of the epoxy compound (C) will be described in Examples.
- the molecular weight of the epoxy compound (C) is from 2 to 2 to 2 to 2, in order to obtain even better bleeding resistance and heat discoloration resistance. 5 is preferred, and 2 to 4 are more preferred.
- the chlorine content of the epoxy compound (C) is preferably 9% by mass or less, more preferably 5% by mass or less, for better bleeding resistance and heat discoloration resistance.
- the content of the epoxy compound (C) is preferably 4 to 16 parts by mass with respect to 100 parts by mass of the urethane resin (A) in terms of obtaining even better bleeding resistance and heat discoloration resistance. , 8 to 12 parts by mass is more preferable.
- the urethane resin composition of the present invention contains the urethane resin (A) having a nonionic group, the water (B), and the epoxy compound (C) as essential components. It may contain an agent.
- additives examples include urethanization catalysts, neutralizers, cross-linking agents, silane coupling agents, thickeners, fillers, thixotropic agents, tackifiers, waxes, heat stabilizers, and light stabilizers.
- Fluorescent brightening agent, Foaming agent, Pigment, Dyes, Conductive agent, Antistatic agent, Moisture permeability improver, Water repellent, Oil repellent, Hollow foam, Flame retardant, Water absorbing agent, Moisture absorbent, Deodorant , a foam stabilizer, an anti-blocking agent, an anti-hydrolysis agent, and the like can be used. These additives may be used alone or in combination of two or more.
- Examples of the synthetic leather include those having a base material, a thermoplastic resin layer, the film, and a surface treatment layer in this order.
- Examples of the base material include polyester fiber, polyethylene fiber, nylon fiber, acrylic fiber, polyurethane fiber, acetate fiber, rayon fiber, polylactic acid fiber, cotton, hemp, silk, wool, glass fiber, carbon fiber, and blends thereof.
- a nonwoven fabric, a woven fabric, a knitted fabric, or the like made of fibers or the like can be used.
- the surface treatment layer for example, one formed of a known solvent-based urethane resin, water-based urethane resin, solvent-based acrylic resin, water-based acrylic resin, or the like can be used.
- the urethane prepolymer heated to 70° C., 65 parts by mass of a 20% aqueous solution of sodium dodecylbenzenesulfonate emulsifier (“Neogen S-20F” manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and 948 parts by mass of water were stirred and mixed in a homomixer. An emulsion was obtained. Immediately thereafter, a water-diluted solution of isophoronediamine (IPDA) having an amino group content equivalent to the NCO group and an equimolar amount was added to extend the chain, and finally the content of the urethane resin (A-1) was 58 mass. % of urethane resin (A-1) composition was obtained.
- IPDA isophoronediamine
- the urethane prepolymer heated to 70° C., 65 parts by mass of a polypropylene-polyethylene copolymer (“Pluronic (registered trademark) L-64” manufactured by ADEKA Co., Ltd.) as an emulsifier, and 957 parts by mass of water are stirred and mixed in a homomixer. An emulsion was obtained. Immediately thereafter, a water-diluted solution of IPDA having an amino group content equivalent to 95% of the NCO groups was added to extend the chain, and finally the urethane resin (A-2) content was 60% by mass. -2) A composition was obtained.
- the urethane prepolymer heated to 70° C., 65 parts by mass of a polypropylene-polyethylene copolymer (“Pluronic (registered trademark) L-64” manufactured by ADEKA Co., Ltd.) as an emulsifier, and 919 parts by mass of water are stirred and mixed in a homomixer. An emulsion was obtained. Immediately thereafter, a water-diluted solution of IPDA having an amino group content equivalent to 95% of the NCO groups was added to extend the chain, and finally the urethane resin (A-2) content was 60% by mass. -2) A composition was obtained.
- Example 1 ⁇ Method for producing laminate> [Method for evaluating bleed resistance] 100 parts by mass of the urethane resin (A-1) composition obtained in Synthesis Example 1, trimethylolpropane polyglycidyl ether (manufactured by Nagase ChemteX Corporation "Denacol EX-321L” number average molecular weight; 250 to 350, number of functional groups; 2 to 3, chlorine content: 0.2 to 0.4% by mass), 2 parts by mass, and 1 part by mass of associative thickener ("Hydran Assister T10" manufactured by DIC Corporation).
- a polyurethane resin film was prepared by applying the solution to the above so that the solid content film thickness was 30 microns, drying at 70° C.
- Example 2 100 parts by mass of the urethane resin (A-1) composition obtained in Synthesis Example 1, trimethylolpropane polyglycidyl ether (manufactured by Nagase ChemteX Corporation "Denacol EX-321L” number average molecular weight; 250 to 350, number of functional groups; 2 to 3, chlorine content: 1% by mass or less) and 1 part by mass of an associative thickener ("Hydran Assister T10" manufactured by DIC Corporation). It was applied to a thickness of 30 microns, dried at 70° C. for 2 minutes and further dried at 120° C. for 2 minutes to prepare a polyurethane resin film, which was evaluated in the same manner.
- Trimethylolpropane polyglycidyl ether manufactured by Nagase ChemteX Corporation "Denacol EX-321L” number average molecular weight; 250 to 350, number of functional groups; 2 to 3, chlorine content: 1% by mass or less
- Example 3 A laminate was obtained and evaluated in the same manner as in Example 2, except that the urethane resin (A-2) composition was used instead of the urethane resin (A-1) composition.
- Example 4 A laminate was obtained and evaluated in the same manner as in Example 1, except that the amount of "Denacol EX-321L” used was changed from 2 parts by mass to 8 parts by mass.
- Example 5 100 parts by mass of the urethane resin (A-2) composition obtained in Synthesis Example 2, trimethylolpropane polyglycidyl ether (manufactured by Nagase ChemteX Corporation "Denacol EX-321" number average molecular weight; 250 to 350, number of functional groups; 2 to 3, chlorine content: 7 to 8% by mass), 5 parts by mass, and 1 part by mass of associative thickener ("Hydran Assister T10" manufactured by DIC Corporation) Solid content on PVC leather It was applied to a film thickness of 30 microns, dried at 70° C. for 2 minutes and further dried at 120° C. for 2 minutes to prepare a polyurethane resin film, which was evaluated in the same manner.
- Example 6 instead of “Denacol EX-321", polyglycerol polyglycidyl ether (manufactured by Nagase ChemteX Co., Ltd. "Denacol EX-512" number average molecular weight: 500 to 600, number of functional groups: 3 to 5, chlorine content: 6 to 7 mass %) was used, and a laminate was obtained and evaluated in the same manner as in Example 5.
- Example 7 A laminate was obtained and evaluated in the same manner as in Example 2 except that the urethane resin (A-3) composition was used instead of the urethane resin (A-1) composition.
- Example 8 A laminate was obtained and evaluated in the same manner as in Example 2, except that the urethane resin (A-4) composition was used instead of the urethane resin (A-1) composition.
- Example 9 A laminate was obtained and evaluated in the same manner as in Example 2, except that the urethane resin (A-5) composition was used instead of the urethane resin (A-1) composition.
- 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" (7.8mm I.D. x 30cm) x 1 "TSKgel G4000” (7.8mm I.D. x 30cm) x 1 "TSKgel G3000” (7.8mm I.D. x 30cm) x 1 Book “TSKgel G2000" (7.8 mm I.D.
- Measuring device Waters 2695 manufactured by Waters Column: The following columns manufactured by Waters were connected in series and used. "Waters Styragel HR 1 THF” (7.8 mm ID x 30 cm) x 1 "Waters Styragel HR 0.5 THF" (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 volume: 100 ⁇ L (tetrahydrofuran solution with a sample concentration of 0.4% by mass) Standard sample: "EasiVial PS-L polystyrene (Low MW)" was used for standard polystyrene to create a calibration curve.
- Examples 1 to 9 which are laminates of the present invention, are excellent in bleeding resistance and heat discoloration resistance.
- Comparative Example 1 is an embodiment in which the epoxy compound (C) is not used, the heat discoloration resistance was poor.
- Comparative Example 2 is an embodiment using a urethane resin having an anionic group instead of the urethane resin (A), but the heat discoloration resistance was poor.
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Abstract
Description
オクチル酸第一錫0.1質量部の存在下、ポリカーボネートポリオール(1,6-ヘキサンジオールを原料とするもの、数平均分子量;2,000)1,000質量部と、ポリエチレングリコール(日油株式会社製「PEG600」、数平均分子量;600、以下「PEG」と略記する。)38質量部と、ジシクロヘキシルメタンジイソシアネート(HMDI)262質量部とをNCO%が2.8%に達するまで100℃で反応させてウレタンプレポリマーを得た。
70℃に加熱した前記ウレタンプレポリマーと乳化剤ドデシルベンゼンスルホン酸Na20%水溶液(第一工業製薬株式会社製「ネオゲンS-20F」)65質量部、水948質量部をホモミキサーで攪拌、混合して乳化液を得た。その後、直ちにNCO基と等モル量に相当するアミノ基含量のイソホロンジアミン(IPDA)の水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂(A-1)の含有率が、58質量%のウレタン樹脂(A-1)組成物を得た。
オクチル酸第一錫0.1質量部の存在下、ポリカーボネートポリオール(1,6-ヘキサンジオールを原料とするもの、数平均分子量;2,000)1,000質量部と、ポリエチレングリコール(日油株式会社製「PEG600」、数平均分子量;600、以下「PEG」と略記する。)38質量部と、ジシクロヘキシルメタンジイソシアネート(HMDI)262質量部とをNCO%が2.8%に達するまで100℃で反応させてウレタンプレポリマーを得た。
70℃に加熱した前記ウレタンプレポリマーと乳化剤としてポリプロピレンポリエチレン共重合体(株式会社ADEKA製「プルロニック(登録商標)L-64」)65質量部、水957質量部をホモミキサーで攪拌、混合して乳化液を得た。その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂(A-2)の含有率が60質量%のウレタン樹脂(A-2)組成物を得た。
ポリカーボネートポリオール(1,6-ヘキサンジオールを原料とするもの、数平均分子量;2,000)を、ポリエステルポリオール(1,6-ヘキサンジオール及びアジピン酸の反応物、数平均分子量;2,000)に変更した以外は合成例1と同様にして樹脂組成物を得、評価を実施した。
ポリカーボネートポリオール(1,6-ヘキサンジオールを原料とするもの、数平均分子量;2,000)を、ポリオキシテトラメチレングリコール(数平均分子量;2,000)に変更した以外は合成例1と同様にして樹脂組成物を得、評価を実施した。
※オクチル酸第一錫0.1質量部の存在下、ポリカーボネートポリオール(1,6-ヘキサンジオールを原料とするもの、数平均分子量;2,000)1,000質量部と、ポリエチレングリコール(日油株式会社製「PEG600」、数平均分子量;600、以下「PEG」と略記する。)38質量部と、イソホロンジジイソシアネート155質量部と、ヘキサンジイソシアネート50質量部をNCO%が3.0%に達するまで100℃で反応させてウレタンプレポリマーを得た。
70℃に加熱した前記ウレタンプレポリマーと乳化剤としてポリプロピレンポリエチレン共重合体(株式会社ADEKA製「プルロニック(登録商標)L-64」)65質量部、水919質量部をホモミキサーで攪拌、混合して乳化液を得た。その後、直ちにNCO基の95%に相当するアミノ基含量のIPDAの水希釈液を添加して鎖伸長させ、最終的にウレタン樹脂(A-2)の含有率が60質量%のウレタン樹脂(A-2)組成物を得た。
温度計、窒素ガス導入管、攪拌器を備えた窒素置換された容器中に、ポリカーボネートポリオール(1,6-ヘキサンジオールを原料とするもの、数平均分子量;2,000)を375質量部、メチルエチルケトン100質量部、ジメチロールプロピオン酸11質量部 を加え十分に攪拌混合した。攪拌混合後、ジシクロヘキシルメタンジイソシアネートを57質量部、カルボン酸ビスマスを0.03質量部添加し、75℃で約4時間反応させることによって、分子末端にイソシアネート基を有するウレタンプレポリマーのメチルエチルケトン溶液を得た。次いで、前記方法で得られたウレタンプレポリマーのメチルエチルケトン溶液にトリエチルアミン8.0質量部を加え、前記ウレタンプレポリマー中にカルボキシル基を中和した後、イオン交換水825質量部を加え、次いで、ピペラジン2.8質量部を加え反応させた。反応終了後、メチルエチルケトンを減圧下留去することによって、最終的にウレタン樹脂(AR-1)の含有率が35質量%のウレタン樹脂(AR-1)組成物を得た。
<積層体の作製方法>
[耐ブリード性の評価方法]
合成例1で得られたウレタン樹脂(A-1)組成物100質量部、トリメチロールプロパンポリグリシジルエーテル(ナガセケムテックス株式会社製「デナコールEX-321L」数平均分子量;250~350、官能基数;2~3、塩素含有量;0.2~0.4質量%)を2質量部、会合型増粘剤(DIC株式会社製「ハイドラン アシスター T10」)を1質量部からなる配合液をPVCレザー上に固形分膜厚が30ミクロンとなる様に塗布し、70℃で2分間、さらに120℃で2分間乾燥させポリウレタン樹脂フィルムを作製した。
得られたPU/PVCレザーを室温(約25℃)で1日静置した際に、表面を目視観察し、ブリード物の有無を判定した。ブリードがないものを「○」、ブリードがあるものを「×」と評価した。
前記「耐ブリード性の評価方法」と同様の方法にて作製したPU/PVCレザーを、110℃恒温オーブンに400時間静置する。取り出したレザー表面が、無色~わずかに変色した場合を「A」、やや黄色く変色した場合を「B」、黄色~茶色く変色した場合を「C」、焦げ茶色になるまで大きく変色した場合を「D」と評価した。
合成例1で得られたウレタン樹脂(A-1)組成物100質量部、トリメチロールプロパンポリグリシジルエーテル(ナガセケムテックス株式会社製「デナコールEX-321L」数平均分子量;250~350、官能基数;2~3、塩素含有量;1質量%以下)を5質量部、会合型増粘剤(DIC株式会社製「ハイドラン アシスター T10」)を1質量部からなる配合液をPVCレザー上に固形分膜厚が30ミクロンとなる様に塗布し、70℃で2分間、さらに120℃で2分間乾燥させポリウレタン樹脂フィルムを作製し、同様に評価を実施した。
ウレタン樹脂(A-1)組成物に代え、ウレタン樹脂(A-2)組成物を用いた以外は実施例2と同様にして積層体を得、評価を実施した。
「デナコールEX-321L」の使用量を2質量部から8質量部に変更した以外は、実施例1と同様にして積層体を得、評価を実施した。
合成例2で得られたウレタン樹脂(A-2)組成物100質量部、トリメチロールプロパンポリグリシジルエーテル(ナガセケムテックス株式会社製「デナコールEX-321」数平均分子量;250~350、官能基数;2~3、塩素含有量;7~8質量%)を5質量部、会合型増粘剤(DIC株式会社製「ハイドラン アシスター T10」)を1質量部からなる配合液をPVCレザー上に固形分膜厚が30ミクロンとなる様に塗布し、70℃で2分間、さらに120℃で2分間乾燥させポリウレタン樹脂フィルムを作製し、同様に評価を実施した。
「デナコールEX-321」に代え、ポリグリセロールポリグリシジルエーテル(ナガセケムテックス株式会社製「デナコールEX-512」数平均分子量;500~600、官能基数;3~5、塩素含有量;6~7質量%)を用いた以外は実施例5と同様にして積層体を得、評価を実施した。
ウレタン樹脂(A-1)組成物に代え、ウレタン樹脂(A-3)組成物を用いた以外は実施例2と同様にして積層体を得、評価を実施した。
ウレタン樹脂(A-1)組成物に代え、ウレタン樹脂(A-4)組成物を用いた以外は実施例2と同様にして積層体を得、評価を実施した。
ウレタン樹脂(A-1)組成物に代え、ウレタン樹脂(A-5)組成物を用いた以外は実施例2と同様にして積層体を得、評価を実施した。
「デナコールEX-321L」を使用しなかったこと以外は、実施例1と同様にして積層体を得、評価を実施した。
ウレタン樹脂(A-1)組成物に代え、ウレタン樹脂(AR-1)組成物を用いた以外は実施例1と同様にして積層体を得、評価を実施した。
実施例および比較例で用いたポリオールの数平均分子量、ウレタン樹脂の重量平均分子量は、ゲル・パーミエーション・カラムクロマトグラフィー(GPC)法により、下記の条件で測定し得られた値を示す。
カラム:東ソー株式会社製の下記のカラムを直列に接続して使用した。
「TSKgel G5000」(7.8mmI.D.×30cm)×1本
「TSKgel G4000」(7.8mmI.D.×30cm)×1本
「TSKgel G3000」(7.8mmI.D.×30cm)×1本
「TSKgel G2000」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:下記の標準ポリスチレンを用いて検量線を作成した。
東ソー株式会社製「TSKgel 標準ポリスチレン A-500」
東ソー株式会社製「TSKgel 標準ポリスチレン A-1000」
東ソー株式会社製「TSKgel 標準ポリスチレン A-2500」
東ソー株式会社製「TSKgel 標準ポリスチレン A-5000」
東ソー株式会社製「TSKgel 標準ポリスチレン F-1」
東ソー株式会社製「TSKgel 標準ポリスチレン F-2」
東ソー株式会社製「TSKgel 標準ポリスチレン F-4」
東ソー株式会社製「TSKgel 標準ポリスチレン F-10」
東ソー株式会社製「TSKgel 標準ポリスチレン F-20」
東ソー株式会社製「TSKgel 標準ポリスチレン F-40」
東ソー株式会社製「TSKgel 標準ポリスチレン F-80」
東ソー株式会社製「TSKgel 標準ポリスチレン F-128」
東ソー株式会社製「TSKgel 標準ポリスチレン F-288」
東ソー株式会社製「TSKgel 標準ポリスチレン F-550」
測定装置:Waters社製Waters2695
カラム:Waters社製の下記のカラムを直列に接続して使用した。
「Waters Styragel HR 1 THF」(7.8mmI.D.×30cm)×1本
「Waters Styragel HR 0.5 THF」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:標準ポリスチレンに「EasiVial PS-L ポリスチレン(Low MW)」を用いて検量線を作成した。
Claims (9)
- 熱可塑性樹脂層、並びに、ノニオン性基を有するウレタン樹脂(A)、水(B)、及び、エポキシ化合物(C)を含有するウレタン樹脂組成物により形成された皮膜を有することを特徴とする積層体。
- 前記エポキシ化合物(C)の数平均分子量が、200~1,500である請求項1記載の積層体。
- 前記エポキシ化合物(C)の官能基数が、2~6である請求項1又は2記載の積層体。
- 前記エポキシ化合物(C)が、芳香環を有しないものである請求項1~3のいずれか1項記載の積層体。
- 前記エポキシ化合物(C)の塩素含有量が、9質量%以下である請求項1~4のいずれか1項記載の積層体。
- 前記エポキシ化合物(C)の含有量が、前記ウレタン樹脂(A)100質量部に対し、4~16質量部である請求項1~5のいずれか1項記載の積層体。
- 前記ウレタン樹脂(A)のノニオン性基が、オキシエチレン構造を有する化合物により形成されたものである請求項1~6のいずれか1項記載の積層体。
- 請求項1~7のいずれか1項記載の積層体を有することを特徴とする合成皮革。
- 前記熱可塑性樹脂が、ポリ塩化ビニルである請求項8記載の合成皮革。
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| CN202280065553.8A CN118159424A (zh) | 2021-10-12 | 2022-09-08 | 层叠体及合成皮革 |
| EP22880677.4A EP4393702A4 (en) | 2021-10-12 | 2022-09-08 | Laminate and synthetic leather |
| JP2023555009A JP7473089B2 (ja) | 2021-10-12 | 2022-09-08 | 積層体、及び、合成皮革 |
| US18/699,987 US20240417923A1 (en) | 2021-10-12 | 2022-09-08 | Laminate and synthetic leather |
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| EP (1) | EP4393702A4 (ja) |
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| WO2025041391A1 (ja) * | 2023-08-21 | 2025-02-27 | ミドリオートレザー株式会社 | 積層シートの製造方法、及び積層シートの製造装置 |
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- 2022-09-08 CN CN202280065553.8A patent/CN118159424A/zh active Pending
- 2022-09-08 EP EP22880677.4A patent/EP4393702A4/en active Pending
- 2022-09-08 US US18/699,987 patent/US20240417923A1/en active Pending
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| KR20240087678A (ko) | 2024-06-19 |
| EP4393702A1 (en) | 2024-07-03 |
| US20240417923A1 (en) | 2024-12-19 |
| CN118159424A (zh) | 2024-06-07 |
| JP7473089B2 (ja) | 2024-04-23 |
| EP4393702A4 (en) | 2025-07-16 |
| TW202327888A (zh) | 2023-07-16 |
| JPWO2023062981A1 (ja) | 2023-04-20 |
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