WO2017179291A1 - 水性ウレタン樹脂組成物、及び、合成皮革 - Google Patents
水性ウレタン樹脂組成物、及び、合成皮革 Download PDFInfo
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- WO2017179291A1 WO2017179291A1 PCT/JP2017/005660 JP2017005660W WO2017179291A1 WO 2017179291 A1 WO2017179291 A1 WO 2017179291A1 JP 2017005660 W JP2017005660 W JP 2017005660W WO 2017179291 A1 WO2017179291 A1 WO 2017179291A1
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- urethane resin
- mass
- resin composition
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- 0 C*OC(*)(*N)*N Chemical compound C*OC(*)(*N)*N 0.000 description 4
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- 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
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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
- 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
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- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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- C08G18/08—Processes
- C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
- C08G18/0842—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents
- C08G18/0861—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of a dispersing phase for the polymers or a phase dispersed in the polymers
- C08G18/0866—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of a dispersing phase for the polymers or a phase dispersed in the polymers the dispersing or dispersed phase being an aqueous medium
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- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
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- C08G18/289—Compounds containing at least one heteroatom other than oxygen or nitrogen containing silicon
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- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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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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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0065—Organic pigments, e.g. dyes, brighteners
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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
- 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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- 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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- 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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- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/105—Resistant to abrasion, scratch
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- D06N2209/00—Properties of the materials
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- D06N2209/143—Inert, i.e. inert to chemical degradation, corrosion resistant
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- D06N2211/00—Specially adapted uses
- D06N2211/10—Clothing
- D06N2211/106—Footwear
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- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/14—Furniture, upholstery
Definitions
- the present invention relates to an aqueous urethane resin composition having excellent wear resistance and hydrolysis resistance.
- urethane resin for synthetic leather As urethane resin for synthetic leather, solvent-based urethane resin centering on N, N-dimethylformamide (DMF) has been widely used, but DMF regulations in Europe and VOC emission regulations in China and Taiwan are strengthened. against this background, de-DMF is being promoted.
- DMF N-dimethylformamide
- the problem to be solved by the present invention is to provide an aqueous urethane resin composition excellent in abrasion resistance and hydrolysis resistance.
- the present invention is a reaction using as an essential raw material a polyol (a1), a reactive silicone (a2) having a number average molecular weight of 4,000 or more and having a functional group that reacts with an isocyanate group, and a polyisocyanate (a3).
- the present invention provides an aqueous urethane resin composition comprising an urethane resin (A) and an aqueous medium (B), which are products.
- the present invention also provides a synthetic leather characterized by having a skin layer and / or a surface treatment layer formed of the aqueous urethane resin composition.
- the aqueous urethane resin composition of the present invention is excellent in wear resistance and hydrolysis resistance. Therefore, the water-based urethane resin composition of the present invention can be suitably used as a skin layer or a surface treatment layer of synthetic leather, and automotive interior materials, furniture, It can be suitably used for the production of synthetic leather that requires high wear resistance and hydrolysis resistance, such as sports shoes.
- the aqueous urethane resin composition of the present invention comprises a polyol (a1), a reactive silicone (a2) having a number average molecular weight of 4,000 or more and having a functional group that reacts with an isocyanate group, a polyisocyanate (a3), It contains a urethane resin (A), which is a reaction product using as an essential raw material, and an aqueous medium (B).
- the urethane resin (A) can be dispersed in an aqueous medium (B) to be described later.
- a urethane resin having a hydrophilic group such as an anionic group, a cationic group, or a nonionic group
- a urethane resin or the like that is forcibly dispersed in the aqueous medium (B) can be used.
- These urethane resins (A) may be used alone or in combination of two or more.
- Examples of the method for obtaining the urethane resin having an anionic group include a method using as a raw material one or more compounds selected from the group consisting of a glycol compound having a carboxyl group and a compound having a sulfonyl group.
- glycol compound having a carboxyl group examples include 2,2-dimethylolpropionic acid, 2,2-dimethylolbutanoic acid, 2,2-dimethylolbutyric acid, 2,2-dimethylolpropionic acid, 2,2 ′ -Valeric acid or the like can be used. These compounds may be used alone or in combination of two or more.
- Examples of the compound having a sulfonyl group include 3,4-diaminobutanesulfonic acid, 3,6-diamino-2-toluenesulfonic acid, 2,6-diaminobenzenesulfonic acid, N- (2-aminoethyl)- 2-Aminoethylsulfonic acid or the like can be used. These compounds may be used alone or in combination of two or more.
- the carboxyl group and sulfonyl group may be partially or completely neutralized with a basic compound in the aqueous urethane resin composition.
- a basic compound include organic amines such as ammonia, triethylamine, pyridine, and morpholine; alkanolamines such as monoethanolamine and dimethylethanolamine; metal base compounds including sodium, potassium, lithium, calcium, and the like. Can do.
- anionic urethane resin a urethane resin having an anionic group
- a hydrophilic group is hydrolyzed as an acid value of the anionic urethane resin.
- it is preferably 20 mgKOH / g or less, more preferably 3 to 17 mgKOH / g, and still more preferably 5 to 14 mgKOH / g.
- a range of 5 to 13 mg KOH / g is particularly preferable.
- the method for measuring the acid value of the anionic urethane resin will be described in Examples described later.
- the use amount of the glycol compound having a carboxyl group and the compound having a sulfonyl group is from 0.1 to 0.1% in the total mass of the raw materials constituting the urethane resin (A) from the viewpoint that a further excellent hydrolysis resistance is obtained.
- the range is preferably 5% by mass, more preferably in the range of 0.3 to 4% by mass, and still more preferably in the range of 0.5 to 3.5% by mass.
- Examples of the method for obtaining the urethane resin having a cationic group include a method using one or more compounds having an amino group as a raw material.
- Examples of the compound having an amino group include compounds having primary and secondary amino groups such as triethylenetetramine and diethylenetriamine; N-alkyldialkanolamines such as N-methyldiethanolamine and N-ethyldiethanolamine, and N-methyl.
- a compound having a tertiary amino group such as N-alkyldiaminoalkylamine such as diaminoethylamine and N-ethyldiaminoethylamine can be used. These compounds may be used alone or in combination of two or more.
- Examples of a method for obtaining the urethane resin having a nonionic group include a method using one or more compounds 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 polyoxyethylene glycol, polyoxyethylene polyoxypropylene glycol, and polyoxyethylene polyoxytetramethylene glycol. These compounds may be used alone or in combination of two or more.
- Examples of the emulsifier that can be used for obtaining the urethane resin forcibly dispersed in the aqueous medium (B) include polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene Nonionic emulsifiers such as oxyethylene sorbitol tetraoleate and polyoxyethylene / polyoxypropylene copolymers; fatty acid salts such as sodium oleate, alkyl sulfate esters, alkyl benzene sulfonates, alkyl sulfosuccinates, naphthalene sulfonates , Anionic emulsifiers such as polyoxyethylene alkyl sulfate, alkane sulfonate sodium salt, alkyl diphenyl ether sulfonate sodium salt; alkyl amine salt, alkyl trimethyl acetate Monium
- the urethane resin (A) specifically, the polyol (a1), the raw material used for producing the urethane resin having the hydrophilic group, the number average molecular weight is 4,000 or more, and the isocyanate group and The reactive silicone (a2) which has a functional group to react, and the reaction product of polyisocyanate (a3) are mentioned.
- polyether polyol for example, polyether polyol, polyester polyol, polyacryl polyol, polycarbonate polyol, polybutadiene polyol and the like can be used. These polyols may be used alone or in combination of two or more.
- polyol (a1) it is preferable to use a polyether polyol and / or a polycarbonate polyol from the viewpoint that much more excellent abrasion resistance and hydrolysis resistance can be obtained, and polytetramethylene glycol and / or polycarbonate polyol.
- polycarbonate polyol it is more preferable to use As the polycarbonate polyol, for the same reason, a polycarbonate polyol using 1,6-hexanediol and / or 1,4-butanediol as a raw material is preferably used, and 1,6-hexanediol and 1,4 -It is more preferable to use a polycarbonate polyol made from butanediol.
- the urethane resin which has a nonionic group as a urethane resin (A)
- things other than the compound which has the said oxyethylene structure are used as said polyol (a1).
- the number average molecular weight of the polyol (a1) is preferably in the range of 500 to 8,000, more preferably in the range of 800 to 5,000, from the viewpoint of the mechanical strength of the resulting film.
- the number average molecular weight of the said polyol (a1) shows the value obtained by measuring on condition of the following by a gel permeation column chromatography (GPC) method.
- Measuring device High-speed GPC device (“HLC-8220GPC” manufactured by Tosoh Corporation) Column: The following columns manufactured by Tosoh Corporation were connected in series. "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 “TSKgel G2000” (7.8 mm ID ⁇ 30 cm) ⁇ 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 mass%) Standard sample: A calibration curve was prepared using the following standard polystyrene.
- the amount of the polyol (a1) used is preferably in the range of 40 to 90% by mass in the total mass of the raw materials constituting the urethane resin (A) from the viewpoint of the mechanical strength of the film, and is preferably 45 to 88% by mass. % Is more preferable, and a range of 50 to 85% by mass is more preferable.
- the polyol (a1) may be used together with a chain extender (a1-1) having a number average molecular weight in the range of 50 to 450, if necessary.
- the number average molecular weight of the chain extender (a1-1) is a value obtained by measurement in the same manner as the number average molecular weight of the polyol (a1).
- chain extender (a1-1) examples include ethylene glycol, diethylene recall, triethylene glycol, propylene glycol, dipropylene glycol, 1,3-propanediol, 1,3-butanediol, and 1,4-butane.
- a chain extender having a hydroxyl group such as diol, hexamethylene glycol, saccharose, methylene glycol, glycerin, sorbitol, bisphenol A, 4,4′-dihydroxydiphenyl, 4,4′-dihydroxydiphenyl ether, trimethylolpropane; ethylenediamine, 1, 2-propanediamine, 1,6-hexamethylenediamine, piperazine, 2,5-dimethylpiperazine, isophoronediamine, 1,2-cyclohexanediamine, 1,3-cyclohexanediamine, 1,4- Use chain extenders having amino groups such as chlorohexanediamine, 4,4′-dicyclohexylmethanediamine, 3,3′-dimethyl-4,4′-dicyclohexylmethanediamine, 1,4-cyclohexanediamine, hydrazine, etc.
- a hydroxyl group such as diol, hexamethylene glycol, saccha
- chain extenders may be used alone or in combination of two or more.
- a chain extender having an amino group and at least one chain selected from the group consisting of ethylenediamine, isophoronediamine, and piperazine. More preferably, an extender is used.
- the amount used in the case of using the chain extender (a1-1) is from 0.1 to 0.1 in the total mass of raw materials constituting the urethane resin (A) from the viewpoint of durability such as hydrolysis resistance and heat resistance.
- the range is preferably 10% by mass, more preferably 0.5 to 7% by mass, and still more preferably 0.8 to 5% by mass.
- the reactive silicone (a2) is incorporated in the urethane resin (A), has a functional group that reacts with an isocyanate group to obtain excellent wear resistance and hydrolysis resistance, and has a number average. It is essential to use one having a molecular weight of 4,000 or more. By introducing such a relatively high molecular weight reactive silicone (a2), an extremely high slip property is imparted, so that excellent wear resistance and hydrolysis resistance can be obtained.
- the number average molecular weight of the reactive silicone (a2) is preferably in the range of 4,500 to 50,000, and more preferably in the range of 4,700 to 30 in terms of obtaining much more excellent wear resistance and hydrolysis resistance. The range of 5,000 is more preferred, and the range of 5,000 to 20,000 is even more preferred.
- the number average molecular weight of the said reactive silicone (a2) shows the value obtained by measuring with the method similar to the said polyol (a1).
- Examples of the reactive silicone (a2) include a one-end diol-type reactive silicone, a one-end monool-type reactive silicone, a one-end diamine-type reactive silicone, and a one-end monoamine type represented by the following formula (1): Reactive silicone, both end diol type reactive silicone represented by the following formula (2), both end diamine type reactive silicone, both end dimercapto type reactive silicone, and both end disilanol type reactive silicone, and the following formula ( The side chain monoamine type reactive silicone shown by 3) can be used. These reactive silicones may be used alone or in combination of two or more.
- R 1 and R 2 each independently represents an alkyl group having 1 to 10 carbon atoms
- X represents a structure represented by the following formulas (X-1) to (X-12).
- n represents an integer in the range of 50 to 670.
- R 1 and R 2 each independently represents an alkylene group having 1 to 10 carbon atoms, and R 3 represents a hydrogen atom or 1 to Represents an alkyl group in the range of 8.
- R 1 represents an alkylene group having 1 to 10 carbon atoms
- R 2 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. Show.
- R 1 represents an alkylene group having 1 to 10 carbon atoms
- R 2 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. Show.
- R 1 and R 2 each independently represents an alkylene group having 1 to 10 carbon atoms, and R 3 represents a hydrogen atom or 1 to Represents an alkyl group in the range of 8.
- R 1 and R 2 each independently represents an alkylene group having 1 to 10 carbon atoms.
- R 1 represents an alkylene group having 1 to 10 carbon atoms.
- R 1 represents an alkyl group having 1 to 10 carbon atoms
- Y represents a structure represented by the following formulas (Y-1) to (Y-5), and n represents 50 to Indicates an integer in the range of 670.
- R 1 represents an alkylene group having 1 to 10 carbon atoms.
- R 1 and R 2 each independently represents an alkylene group having 1 to 10 carbon atoms.
- R 1 and R 2 each represent an alkyl group having 1 to 8 carbon atoms
- Z represents a structure represented by the following formulas (Z-1) to (Z-2)
- m represents an integer in the range of 50 to 670
- n represents an integer in the range of 1 to 10.
- R 1 represents an alkylene group having 1 to 10 carbon atoms.
- R 1 and R 2 each independently represents an alkylene group having 1 to 10 carbon atoms.
- Examples of the reactive silicone (a2) include “Silaplane FM-3321”, “Silaplane FM-3325”, “Silaplane FM-4421”, “Silaplane FM-4425”, and “Silara” manufactured by JNC Corporation.
- X-22-176GX-A, X-22 -176F "etc. can be obtained as a commercial product.
- the reactive silicone (a2) since a silicone chain is introduced into the side chain of the urethane resin (A), a higher slipping property is imparted, and a further excellent wear resistance and hydrolysis resistance are obtained.
- the reactive silicone represented by the formula (1) it is preferable to use the reactive silicone represented by the formula (1).
- X represents the formulas (X-1) and (X-7). It is more preferable to use one or more reactive silicones selected from the group consisting of (X-9), and the reactive silicone in which X represents the above formula (X-1) and / or (X-7) More preferably, is used.
- R 1 and R 2 are each an alkyl group having 1 to 3 carbon atoms
- n is an integer in the range of 50 to 270
- the amount of the reactive silicone (a2) used is from 1 to 25% by mass in the total mass of the raw materials constituting the urethane resin (A) from the standpoint that much more excellent wear resistance and hydrolysis resistance can be obtained.
- the range is preferably 3 to 20% by mass, more preferably 3.8 to 19% by mass.
- polyisocyanate (a3) examples include aromatic polyisocyanates such as phenylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, carbodiimidized diphenylmethane polyisocyanate; hexamethylene diisocyanate, Aliphatic and / or alicyclic polyisocyanates such as lysine diisocyanate, cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, dimer acid diisocyanate, norbornene diisocyanate, etc.
- aromatic polyisocyanates such as phenylene diisocyanate, tol
- polyisocyanates may be used alone or in combination of two or more.
- an aliphatic polyisocyanate and / or an alicyclic polyisocyanate from the viewpoint of resistance to light discoloration, and one or more kinds selected from the group consisting of hexamethylene diisocyanate, isophorone diisocyanate, and dicyclohexylmethane diisocyanate. More preferably, isocyanate is used.
- the amount of the polyisocyanate (a3) used is in the range of 5 to 40% by mass in the total mass of raw materials constituting the urethane resin (A) from the viewpoint of production stability and mechanical properties of the resulting film.
- the range of 7 to 30% by mass is more preferable, and the range of 10 to 25% by mass is still more preferable.
- Examples of the method for producing the urethane resin (A) include the polyol (a1), the raw material used for producing the urethane resin having the hydrophilic group, the reactive silicone (a2), and the polyisocyanate (a3). And, if necessary, a method in which the chain extender (a1-1) is charged and reacted together. These reactions can be carried out, for example, at 50 to 100 ° C. for 3 to 10 hours.
- the molar ratio of the functional group that reacts with the isocyanate group of the raw material and the total functional group that reacts with the isocyanate group of the reactive silicone (a2) and the isocyanate group of the polyisocyanate (a3) [isocyanate group / The total of functional groups that react with isocyanate groups] is preferably in the range of 0.8 to 1.2, and more preferably in the range of 0.9 to 1.1.
- the urethane resin (A) When producing the urethane resin (A), it is preferable to deactivate the isocyanate group remaining in the urethane resin (A). When the isocyanate group is deactivated, it is preferable to use an alcohol having one hydroxyl group such as methanol. The amount of the alcohol used is preferably in the range of 0.001 to 10 parts by mass with respect to 100 parts by mass of the 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 Amide compounds and the like can be used.
- These organic solvents may be used alone or in combination of two or more. The organic solvent is preferably removed by a distillation method or the like when obtaining an aqueous urethane resin composition.
- aqueous medium (B) for example, water, an organic solvent miscible with water, a mixture thereof, or the like can be used.
- organic solvent miscible with water include alcohol solvents such as methanol, ethanol, n- and isopropanol; ketone solvents such as acetone and methyl ethyl ketone; polyalkylene glycol solvents such as ethylene glycol, diethylene glycol and propylene glycol; Alkyl ether solvents: lactam solvents such as N-methyl-2-pyrrolidone and the like can be used.
- These aqueous media may be used alone or in combination of two or more. Among these, it is preferable to use only water or a mixture of water and an organic solvent miscible with water, and more preferable to use only water from the viewpoint of safety and reduction of environmental load.
- the mass ratio [(A) / (B)] of the urethane resin (A) and the aqueous medium (B) is preferably in the range of 10/80 to 70/30 from the viewpoint of workability. A range of 20/80 to 60/40 is more preferable.
- the aqueous urethane resin composition of the present invention contains the urethane resin (A) and the aqueous medium (B), but may contain other additives as necessary.
- additives examples include emulsifiers, neutralizers, thickeners, urethanization catalysts, crosslinking agents, foaming agents, pigments, dyes, oil repellents, hollow foams, flame retardants, antifoaming agents, leveling agents.
- a ring agent, an antiblocking agent, etc. can be used. These additives may be used alone or in combination of two or more.
- the synthetic leather has a skin layer and / or a surface treatment layer formed from the aqueous urethane resin composition of the present invention.
- Examples of the synthetic leather include urethane synthetic leather and polyvinyl chloride (PVC) synthetic leather.
- PVC polyvinyl chloride
- Examples of the urethane-based synthetic leather include those in which a fiber base layer, an intermediate layer (adhesive layer), a skin layer, and a surface treatment layer as necessary are sequentially laminated.
- a nonwoven fabric, a woven fabric, a knitted fabric, or the like can be used as the fiber base material.
- polyester fiber, nylon fiber, acrylic fiber, acetate fiber, rayon fiber, polylactic acid fiber, cotton, hemp, silk, wool, blended fiber thereof or the like can be used as the fiber substrate. it can.
- intermediate layer examples include those formed using a known aqueous urethane resin composition, solvent-based urethane resin composition, solvent-free urethane resin composition, and the like.
- water-based urethane resin composition of the present invention When the water-based urethane resin composition of the present invention is not used as the skin layer and the surface treatment layer, a known water-based urethane resin composition, solvent-based urethane resin composition, water-based acrylic resin composition, solvent-based acrylic resin It can be formed using a composition or the like. Among these, it is preferable to use a water-based urethane resin composition and / or a water-based acrylic resin composition from the viewpoint of reducing environmental burden.
- a resin composition for forming a surface treatment layer is applied on a release paper and dried, and then a resin composition for forming a skin layer is applied thereon.
- a method of applying a resin composition for forming an intermediate layer (adhesive layer) thereon after drying, followed by drying and then bonding to the fiber base material can be mentioned.
- a thermocompression bonding may be performed at a pressure of, for example, 5 to 10 MPa / m 2 using, for example, a pressing roll heated to 80 to 140 ° C.
- aging may be performed at a temperature of 20 to 60 ° C. as necessary.
- Examples of a method for applying the aqueous urethane resin composition when forming the surface layer and / or the surface treatment layer using the aqueous urethane resin composition of the present invention include a roll coater, a knife coater, a comma coater, and an applicator. And the like.
- the thickness of the aqueous urethane resin composition after drying is, for example, in the range of 5 to 100 ⁇ m.
- Examples of the method for drying the aqueous urethane resin composition of the present invention include a method of drying at a temperature of 60 to 130 ° C. for 30 seconds to 10 minutes.
- the PVC synthetic leather includes, for example, a fiber base layer, a sponge layer, a PVC layer, and a surface treatment layer formed of the aqueous urethane resin composition of the present invention, which are sequentially laminated.
- Each layer other than the surface treatment layer is formed of a known material, and the surface treatment layer can be formed by the same method as the surface treatment layer in the urethane synthetic leather.
- the aqueous urethane resin composition of the present invention is excellent in wear resistance and hydrolysis resistance. Therefore, the water-based urethane resin composition of the present invention can be suitably used as a skin layer or a surface treatment layer of synthetic leather, and automotive interior materials, furniture, It can be suitably used for the production of synthetic leather that requires high wear resistance and hydrolysis resistance, such as sports shoes.
- Example 1 Preparation of aqueous urethane resin composition (X-1) Polycarbonate diol (Ube Industries, Ltd.) was placed in a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen inlet tube under a nitrogen stream.
- X-1 Polycarbonate diol (Ube Industries, Ltd.) was placed in a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen inlet tube under a nitrogen stream.
- ETERNACOLL UH-200 number average molecular weight: 2,000, hereinafter abbreviated as “PC-1”
- PC-1 both-end diol type reactive silicone
- Silaplane FM-4425 Average molecular weight: 10,000, hereinafter abbreviated as “both terminal diol type Si-1”
- DMPA dimethylolpropionic acid
- H 12 MDI dicyclohexylmethane diisocyanate
- aqueous urethane resin composition (X-1) (nonvolatile content: 30% by mass, acid value: 13 KOH mg / g).
- Example 2 Preparation of aqueous urethane resin composition (X-2) Polycarbonate diol (Asahi Kasei Chemicals Co., Ltd.) in a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen reflux tube under a nitrogen stream.
- aqueous urethane resin composition (X-2) (nonvolatile content: 30% by mass, acid value: 5 KOH mg / g).
- Example 3 Preparation of aqueous urethane resin composition (X-3) Polycarbonate diol (Asahi Kasei Chemicals Co., Ltd.) in a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen reflux tube under a nitrogen stream.
- DURANOL T4692 number average molecular weight: 2,000, hereinafter abbreviated as“ PC-3 ” 500 parts by mass, one-end diol type reactive silicone (“ Silaplane FM-DA21 ”manufactured by JNC Corporation, number average Molecular weight: 5,000, hereinafter abbreviated as “one-end diol type Si-2”.) 88 parts by mass, DMPA 26 parts by mass, methyl ethyl ketone 332 parts by mass were added and mixed uniformly, and then 145 parts by mass of H 12 MDI was added. Then, 0.1 part by mass of dibutyltin dilaurate is added and reacted at 70 ° C.
- IPDA isophoronediamine
- aqueous urethane resin composition (X-3) (nonvolatile content: 30% by mass, acid value: 14 KOH mg / g).
- Example 4 Preparation of aqueous urethane resin composition (X-4) In a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen reflux tube, 500 parts by mass of PC-2 under a nitrogen stream Polytetramethylene glycol (number average molecular weight: 1,000, hereinafter abbreviated as “PTMF1000”) 133 parts by mass, one-end diol type reactive silicone (“X-22-176F” manufactured by Shin-Etsu Chemical Co., Ltd.), number Average molecular weight: 12,000, hereinafter abbreviated as “one-end diol type Si-3”) 33 parts by weight, 17 parts by weight of DMPA and 385 parts by weight of methyl ethyl ketone were added and mixed uniformly, and then 86 parts by weight of IPDI was added.
- PTMF1000 number average molecular weight: 1,000, hereinafter abbreviated as “PTMF1000”
- X-22-176F one-end dio
- aqueous urethane resin composition (X-4) (nonvolatile content: 30% by mass, acid value: 8 KOH mg / g).
- Example 5 Preparation of aqueous urethane resin composition (X-5) Polycarbonate diol (Asahi Kasei Chemicals Corporation) in a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen reflux tube under a nitrogen stream.
- DURANOL G3452 number average molecular weight: 1,000, hereinafter abbreviated as “PC-4” 500 parts by mass, mono-terminal type reactive silicone (“Silaplane FM-0425” manufactured by JNC Corporation), Number average molecular weight: 10,000, hereinafter abbreviated as “one-end monool type Si-1”) 56 parts by mass, 17 parts by mass of DMPA and 291 parts by mass of methyl ethyl ketone were added and mixed uniformly, Abbreviated as “HDI.”) 86 parts by weight, then 0.1 parts by weight of dibutyltin dilaurate, 70 ° C.
- PC-4 mono-terminal type reactive silicone
- aqueous urethane resin composition (X-5) (nonvolatile content: 30% by mass, acid value: 10 KOH mg / g).
- a methyl ethyl ketone solution of a urethane prepolymer having an isocyanate group was obtained.
- 19 parts by mass of triethylamine was added to the methylethylketone solution of the obtained urethane prepolymer.
- 1972 parts by mass of ion-exchanged water was added, and then 31 parts by mass of IPDA was added. Added and allowed to react.
- aqueous urethane resin composition (X-6) (nonvolatile content: 30% by mass, acid value: 12 KOH mg / g).
- Example 7 Preparation of aqueous urethane resin composition (X-7) Polytetramethylene glycol (number average) was placed in a four-necked flask equipped with a stirrer, reflux condenser, thermometer and nitrogen reflux tube under a nitrogen stream. Molecular weight: 2,000, hereinafter abbreviated as “PTMG2000”.) 500 parts by mass, 167 parts by mass of one-end diol type Si-2, 23 parts by mass of DMPA, and 400 parts by mass of methyl ethyl ketone were added and mixed uniformly.
- PTMG2000 Molecular weight
- aqueous urethane resin composition (X-7) (nonvolatile content: 30% by mass, acid value: 11 KOH mg / g).
- aqueous polyurethane resin composition (X′-1) (nonvolatile content: 30% by mass, acid value: 13 KOH mg / g).
- a methyl ethyl ketone solution of a urethane prepolymer having an isocyanate group at the molecular end was obtained.
- 20 parts by mass of triethylamine was added to the methyl ethyl ketone solution of the obtained urethane prepolymer.
- 1865 parts by mass of ion-exchanged water was added, and then 18 parts by mass of IPDA was added. Added and allowed to react.
- aqueous urethane resin composition (X′-2) (nonvolatile content: 30% by mass, acid value: 14 KOH mg / g).
- Formula A (B ⁇ f ⁇ 5.611) / S (1)
- A is the solid content acid value of the resin (mgKOH / g)
- B is the amount of 0.1 mol / L potassium hydroxide aqueous solution used for titration (mL)
- f is the 0.1 mol / L potassium hydroxide aqueous solution.
- S is the mass (g) of resin particles
- 5.611 is the formula weight of potassium hydroxide (56.11 / 10).
- Abrasion resistance evaluation method The obtained synthetic leather was subjected to a flat surface abrasion test (JASO-M403-88B method, load: 1 kg, stroke: 140 mm), and the number of times until the surface of the synthetic leather was worn and the base fabric was confirmed was measured. It was evaluated as follows. “A”: 30,000 times or more “B”: 10,000 times or more and less than 30,000 times “C”: less than 10,000 times
- Examples 1 to 7 according to the present invention have excellent wear resistance and hydrolysis resistance.
- Comparative Examples 1 and 2 are embodiments in which a reactive silicone having a number average molecular weight lower than the range specified in the present invention is used. However, both have insufficient wear resistance, wear resistance, and water resistance. Decomposability could not be achieved at the same time.
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Abstract
Description
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」
撹拌機、還流冷却管、温度計及び窒素導入管を備えた4ツ口フラスコに、窒素気流下、ポリカーボネートジオール(宇部興産株式会社製「ETERNACOLL UH-200」数平均分子量:2,000、以下「PC-1」と略記する。)500質量部、両末端ジオール型反応性シリコーン(JNC株式会社製「サイラプレーンFM-4425」数平均分子量:10,000、以下「両末端ジオール型Si-1」と略記する。)125質量部、ジメチロールプロピオン酸(以下「DMPA」と略記する。)25質量部、メチルエチルケトン360質量部を加え、均一に混合した後、ジシクロヘキシルメタンジイソシアネート(以下「H12MDI」と略記する。)177質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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19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1960質量部を加え、次いで、エチレンジアミン(以下「EDA」と略記する。)14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、水性ウレタン樹脂組成物(X-1)(不揮発分;30質量%、酸価;13KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、ポリカーボネートジオール(旭化成ケミカルズ株式会社製「DURANOL T5652」、数平均分子量:2,000、以下「PC-2」と略記する。)500質量部、片末端ジオール型反応性シリコーン(信越化学工業株式会社製「X-22-176GX-A」、数平均分子量:14,000、以下「片末端ジオール型Si-1」と略記する。)26質量部、DMPA8質量部、メチルエチルケトン269質量部を加え、均一に混合した後、イソホロンジイソシアネート(以下「IPDI」と略記する。)86質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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6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1463質量部を加え、次いで、ピペラジン(以下「PZ」と略記する。)7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、水性ウレタン樹脂組成物(X-2)(不揮発分;30質量%、酸価;5KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、ポリカーボネートジオール(旭化成ケミカルズ株式会社製「DURANOL T4692、数平均分子量:2,000、以下「PC-3」と略記する。)500質量部、片末端ジオール型反応性シリコーン(JNC株式会社製「サイラプレーン FM-DA21」、数平均分子量:5,000、以下「片末端ジオール型Si-2」と略記する。)88質量部、DMPA26質量部、メチルエチルケトン332質量部を加え、均一に混合した後、H12MDIを145質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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20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1808質量部を加え、次いで、イソホロンジアミン(以下「IPDA」と略記する。)16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、水性ウレタン樹脂組成物(X-3)(不揮発分;30質量%、酸価;14KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、PC-2を500質量部、ポリテトラメチレングリコール(数平均分子量:1,000、以下「PTMF1000」と略記する。)133質量部、片末端ジオール型反応性シリコーン(信越化学工業株式会社製「X-22-176F」、数平均分子量:12,000、以下「片末端ジオール型Si-3」と略記する。)33質量部、DMPA17質量部、メチルエチルケトン385質量部を加え、均一に混合した後、IPDIを86質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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13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2098質量部を加え、次いで、EDA15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、水性ウレタン樹脂組成物(X-4)(不揮発分;30質量%、酸価;8KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、ポリカーボネートジオール(旭化成ケミカルズ株式会社製「DURANOL G3452」、数平均分子量:1,000、以下「PC-4」と略記する。)500質量部、片末端モノオール型反応性シリコーン(JNC株式会社製「サイラプレーンFM-0425」、数平均分子量:10,000、以下「片末端モノオール型Si-1」と略記する。)56質量部、DMPA17質量部、メチルエチルケトン291質量部を加え、均一に混合した後、ヘキサンメチレンジイソシアネート(以下「HDI」と略記する。)86質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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13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1586質量部を加え、次いで、IPDA22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、水性ウレタン樹脂組成物(X-5)(不揮発分;30質量%、酸価;10KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、PC-1を500質量部、両末端ジアミン型反応性シリコーン(JNC株式会社製「サイラプレーンFM-3325」、数平均分子量:10,000、以下「両末端ジアミン型Si-1」と略記する。)125質量部、DMPA25質量部、メチルエチルケトン362質量部を加え、均一に混合した後、H12MDIを165質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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19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1972質量部を加え、次いで、IPDAを31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、水性ウレタン樹脂組成物(X-6)(不揮発分;30質量%、酸価;12KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、ポリテトラメチレングリコール(数平均分子量:2,000、以下「PTMG2000」と略記する。)500質量部、片末端ジオール型Si-2を167質量部、DMPAを23質量部、メチルエチルケトン400質量部を加え、均一に混合した後、IPDIを203質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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18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2176質量部を加え、次いで、PZを39質量部加え反応させた。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、水性ウレタン樹脂組成物(X-7)(不揮発分;30質量%、酸価;11KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、PC-1を500質量部、両末端ジオール型反応性シリコーン(信越化学工業株式会社製「KF-6002、数平均分子量:3,200、以下「両末端ジオール型Si’-1」と略記する。)125質量部、DMPAを25質量部、メチルエチルケトン360質量部を加え、均一に混合した後、H12MDIを177質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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19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1986質量部を加え、次いで、EDAを14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、水系ポリウレタン樹脂組成物(X’-1)(不揮発分;30質量%、酸価;13KOHmg/g)を得た。
撹拌機、還流冷却管、温度計及び窒素還流管を備えた4ツ口フラスコに、窒素気流下、PC-3を500質量部、片末端ジオール型反応性シリコーン(JNC製「サイラプレーン FM-DA11」、数平均分子量:1,000、以下「片末端ジオール型Si’-1」と略記する。)88質量部、DMPAを26質量部、メチルエチルケトン343質量部を加え、均一に混合した後、H12MDIを167質量部を加え、次いでジブチル錫ジラウレート0.1質量部を加え、70℃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、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20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1865質量部を加え、次いで、IPDAを18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、水性ウレタン樹脂組成物(X’-2)(不揮発分;30質量%、酸価;14KOHmg/g)を得た。
実施例及び比較例で得られた水性ウレタン樹脂組成物を乾燥し、乾燥固化した樹脂粒子の0.05g~0.5gを、300mL三角フラスコに秤量し、次いで、テトラヒドロフランとイオン交換水との質量割合[テトラヒドロフラン/イオン交換水]が80/20の混合溶媒約80mLを加えそれらの混合液を得た。
次いで、前記混合液にフェノールフタレイン指示薬を混合した後、あらかじめ標定された0.1mol/Lの水酸化カリウム水溶液で滴定し、滴定に用いた水酸化カリウム水溶液の量から下記計算式(1)に従い、水性ウレタン樹脂(A)の酸価(mgKOH/g)を求めた。
計算式 A=(B×f×5.611)/S (1)
式中、Aは樹脂の固形分酸価(mgKOH/g)、Bは滴定に用いた0.1mol/L水酸化カリウム水溶液の量(mL)、fは0.1mol/L水酸化カリウム水溶液のファクター、Sは樹脂粒子の質量(g)、5.611は水酸化カリウムの式量(56.11/10)である。
実施例及び比較例で得られた水性ウレタン樹脂組成物100質量部、水分散性黒色顔料(DIC株式会社製「ダイラックHS-9530」)10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」)1質量部を配合し、離型紙上に乾燥後の膜厚が30μmとなるように塗布し、70℃で2分間乾燥させ、表皮層を得た。
次いで、水性ウレタン接着剤(DIC株式会社製「ハイドランWLA-412」)を100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」)1質量部、ポリイソシアネート架橋剤(DIC株式会社製「ハイドラン アシスター C5」)を9質量部配合し、前記表皮層上に乾燥後の膜厚が50μmとなるように塗布し、70℃で3分間乾燥させた。乾燥後、直ちにT/R起毛布を貼り合せ、120℃で2分間熱処理し、50℃で2日間熟成させてから離型紙を剥離して合成皮革を得た。
得られた合成皮革に対し、平面磨耗試験(JASO-M403-88B法、荷重;1kg、ストローク;140mm)を行い、合成皮革の表面が磨耗し基布が確認できるまでの回数を測定し、以下のように評価した。
「A」;30,000回以上
「B」;10,000回以上30,000回未満
「C」;10,000回未満
得られた合成皮革を70℃、湿度95%の湿熱条件下で5週間養生した後の外観変化を確認し、以下のように評価した。
「A」;外観に変化なし。
「B」;外観に艶の変化が生じた。
「C」;外観に艶の変化が生じ、かつ、べたつきが生じた。
Claims (4)
- ポリオール(a1)と、数平均分子量が4,000以上であり、イソシアネート基と反応する官能基を有する反応性シリコーン(a2)と、ポリイソシアネート(a3)とを必須原料とした反応物であるウレタン樹脂(A)、及び、水性媒体(B)を含有することを特徴とする水性ウレタン樹脂組成物。
- 前記反応性シリコーン(a2)の使用量が、ウレタン樹脂(A)を構成する原料の合計質量中1~25質量%の範囲である請求項1記載の水性ウレタン樹脂組成物。
- 前記ウレタン樹脂(A)が、酸価が20mgKOH/g以下のアニオン性ウレタン樹脂である請求項1又は2記載の水性ウレタン樹脂組成物。
- 請求項1~3のいずれか1項記載の水性ウレタン樹脂組成物により形成された表皮層及び/又は表面処理層を有することを特徴とする合成皮革。
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KR20210002552A (ko) * | 2018-06-07 | 2021-01-08 | 디아이씨 가부시끼가이샤 | 합성 피혁 |
KR20210002551A (ko) * | 2018-06-07 | 2021-01-08 | 디아이씨 가부시끼가이샤 | 합성 피혁 |
JP6669324B1 (ja) * | 2018-06-07 | 2020-03-18 | Dic株式会社 | 合成皮革 |
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KR102631667B1 (ko) | 2018-06-07 | 2024-02-01 | 디아이씨 가부시끼가이샤 | 합성 피혁 |
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JP2022510792A (ja) * | 2018-12-17 | 2022-01-28 | シュタール インタナショナル ベーフェー | 側鎖としてポリシロキサンを含んでいるポリウレタンの水性ポリウレタン分散液を調製する方法 |
CN113085314A (zh) * | 2019-12-23 | 2021-07-09 | Dic株式会社 | 合成皮革 |
Also Published As
Publication number | Publication date |
---|---|
EP3444286A1 (en) | 2019-02-20 |
EP3444286A4 (en) | 2019-12-25 |
TW201807001A (zh) | 2018-03-01 |
EP3444286B1 (en) | 2023-01-11 |
KR101966579B1 (ko) | 2019-04-05 |
US20180142409A1 (en) | 2018-05-24 |
CN107531861A (zh) | 2018-01-02 |
KR20170134574A (ko) | 2017-12-06 |
TWI719185B (zh) | 2021-02-21 |
JPWO2017179291A1 (ja) | 2018-04-19 |
JP6179697B1 (ja) | 2017-08-16 |
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