WO2022219891A1 - 積層体及び靴底 - Google Patents
積層体及び靴底 Download PDFInfo
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- WO2022219891A1 WO2022219891A1 PCT/JP2022/004163 JP2022004163W WO2022219891A1 WO 2022219891 A1 WO2022219891 A1 WO 2022219891A1 JP 2022004163 W JP2022004163 W JP 2022004163W WO 2022219891 A1 WO2022219891 A1 WO 2022219891A1
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- WIPO (PCT)
- Prior art keywords
- mass
- less
- foam layer
- urethane foam
- polyol
- Prior art date
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- 210000004027 cell Anatomy 0.000 claims abstract description 11
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 27
- 150000003839 salts Chemical class 0.000 claims description 25
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- -1 quaternary ammonium alkyl sulfate Chemical class 0.000 description 61
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 21
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- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 14
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- 125000004432 carbon atom Chemical group C* 0.000 description 13
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- 229920005830 Polyurethane Foam Polymers 0.000 description 6
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 229920000768 polyamine Polymers 0.000 description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
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- 150000001450 anions Chemical class 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
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- 125000001453 quaternary ammonium group Chemical group 0.000 description 4
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- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 4
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- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 125000002723 alicyclic group Chemical group 0.000 description 3
- 230000001588 bifunctional effect Effects 0.000 description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
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- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 3
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- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
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- 229920000166 polytrimethylene carbonate Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- VRFOKYHDLYBVAL-UHFFFAOYSA-M 1-ethyl-3-methylimidazol-3-ium;ethyl sulfate Chemical compound CCOS([O-])(=O)=O.CCN1C=C[N+](C)=C1 VRFOKYHDLYBVAL-UHFFFAOYSA-M 0.000 description 2
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- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 2
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 2
- DSKYSDCYIODJPC-UHFFFAOYSA-N 2-butyl-2-ethylpropane-1,3-diol Chemical compound CCCCC(CC)(CO)CO DSKYSDCYIODJPC-UHFFFAOYSA-N 0.000 description 2
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
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- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
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- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 description 1
- 229940100515 sorbitan Drugs 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 229960005078 sorbitan sesquioleate Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- UZZYXUGECOQHPU-UHFFFAOYSA-N sulfuric acid monooctyl ester Natural products CCCCCCCCOS(O)(=O)=O UZZYXUGECOQHPU-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical class CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- IFNXAMCERSVZCV-UHFFFAOYSA-L zinc;2-ethylhexanoate Chemical compound [Zn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O IFNXAMCERSVZCV-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
- B32B2255/102—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer synthetic resin or rubber layer being a foamed layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2437/00—Clothing
- B32B2437/02—Gloves, shoes
Definitions
- the present invention relates to laminates and shoe soles.
- a method of imparting antistatic properties to resin a method of coating the surface of a resin molded product with an antistatic agent consisting of a conductive substance, an ionic substance, etc., or adding it internally to the resin is being used.
- these methods include, for example, 1) a method of adding carbon black, a conductive filler, etc., 2) a method of coating or adding an ionic surfactant, 3) a method of perchloric acid, thiocyanic acid or 4) A method of adding a quaternary ammonium alkyl sulfate or a quaternary ammonium perchlorate; 5) A method of adding a non-metallic antistatic compound such as a quaternary ammonium substituted sulfonate; A method of adding a metal-based antistatic compound such as an acid metal salt and a polar organic solvent has been proposed (Patent Document 1).
- the surface to be installed on the ground or floor is a high-density molded body from the viewpoint of abrasion resistance, scratch resistance, hydrolysis resistance, etc., and the surface that comes in contact with the human body is flexible.
- the viewpoint of soft feeling, etc. it is a low-density molded body, and it is a structure in which they are bonded.
- urethane resin Since urethane resin has self-adhesive properties, it is possible to obtain a structure by molding the high-density part and then continuously molding the low-density part during manufacturing. However, due to the influence of the antistatic agent internally added to the resin in order to exhibit the electrostatic performance, the adhesiveness of the structure may be hindered. Production sites for shoe soles are shifting to Southeast Asia where labor costs are low, and the deterioration of adhesiveness caused by continuous molding, especially under hot and humid conditions, has become a problem.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a laminate in which the adhesion between each layer is good even when continuous molding is performed under high temperature and high humidity.
- the laminate of the present invention has a first urethane foam layer and a second urethane foam layer, and the density of the first urethane foam layer is 0.8 g/cm 3 or more and 1.2 g/cm 3 or more.
- the density of the second urethane foam layer is 0.3 g/cm 3 or more and 0.7 g/cm 3 or less, and the second urethane foam layer and the first urethane foam layer
- the average cell diameter of the foam cells in the range exceeding 200 ⁇ m from the interface with the first urethane foam layer is a ( ⁇ m)
- the average cell diameter of the foam cells in the range of 200 ⁇ m or less from the interface with the first urethane foam layer is b ( ⁇ m)
- b/a is less than 1.2.
- the laminate of the present invention has good adhesion between layers even when continuously molded under high temperature and high humidity.
- the laminate of the present invention has a first urethane foam layer and a second urethane foam layer.
- the first urethane foam layer is composed of a urethane resin foam.
- the urethane resin include polyether-based urethane resin, polyester-based urethane resin, and polycarbonate-based urethane resin.
- a polyester-based urethane resin represents a urethane resin having a unit derived from polyester in the molecular chain.
- the density of the first urethane foam layer is preferably 0.8 g/cm 3 or more, more preferably 0.9 g/cm 3 or more, and preferably 1.2 g/cm 3 or less, more preferably 1.1 g. / cm 3 or less.
- the hardness of the first urethane foam layer is preferably 50 or more, more preferably 50 or more, when measured by a spring hardness test (type C) in accordance with Japanese Industrial Standards JIS K 7312-1996 (hardness test). It is 60 or more, preferably 100 or less, more preferably 90 or less.
- the foamed cell diameter is preferably 10 ⁇ m or more, more preferably 20 ⁇ m or more, still more preferably 30 ⁇ m or more, and preferably 200 ⁇ m or less, more preferably 150 ⁇ m or less, further preferably 100 ⁇ m or less. be.
- the foam cell diameter refers to the length of the foam cells observed on the fracture surface of the urethane foam.
- the foam cell diameter can be measured using a scanning electron microscope (SEM), and the average foam cell diameter represents the average foam cell diameter measured for 50 or more foam cells.
- the first urethane foam layer can be produced by foaming, molding, and curing the first polyurethane resin composition containing the main agent (i) and the curing agent (ii).
- the main agent (i) preferably contains a urethane prepolymer (A) having an isocyanate group.
- the urethane prepolymer (A) is preferably a reaction product of polyol (A1) and polyisocyanate (A2), and preferably has an isocyanate group.
- the isocyanate group is preferably at the end of the urethane prepolymer (A).
- polyol (A1) one type or two or more types can be used, and examples thereof include high molecular weight polyols such as polyester polyols, polyether polyols and polycarbonate polyols; low molecular weight polyols and the like.
- the polyol (A1) may be a bifunctional or trifunctional or higher polyol.
- polyester polyol one or more kinds can be used.
- the low-molecular-weight polyol which is a raw material for the polyester polyol
- one or two or more can be used.
- examples thereof include polyols having a molecular weight of 50 or more and less than 300.
- aliphatic polyols are preferred, and the number of carbon atoms in the aliphatic polyol is preferably 2-8, more preferably 2-6, and even more preferably 2-4.
- the content of the aliphatic polyol is preferably 60% by mass or more, more preferably 80% by mass or more, and still more preferably 90% by mass or more in the low-molecular-weight polyol that is the raw material of the polyester polyol, and the upper limit is 100% by mass. is.
- the polycarboxylic acid which is a raw material of the polyester polyol
- one or two or more can be used.
- polyether polyol one or more can be used. Examples include polyethylene glycol (PEG), polypropylene glycol (PPG), polyoxyethylene polyoxypropylene glycol (PEPG), polytetramethylene glycol (PTMG). ), polyether polyols having oxyalkylene units having 2 to 6 carbon atoms (preferably 2 to 4 carbon atoms) such as polyoxybutylene glycol, polyoxypentylene glycol and polyoxyhexylene glycol.
- the polyether polyol may have any structure, linear, branched or cyclic.
- the polyether polyol may be a bifunctional polyol or a trifunctional or higher polyol, preferably a bifunctional polyol.
- the polycarbonate polyol is obtained by an esterification reaction between carbonic acid and carbonic acid ester and polyhydric alcohol.
- the polyhydric alcohol one or more can be used, and examples thereof include 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, polyethylene glycol, and polyoxypropylene. glycol, polytetramethylene glycol, and the like.
- Examples of the carbonate include methyl carbonate, dimethyl carbonate, ethyl carbonate, diethyl carbonate, cyclocarbonate, diphenyl carbonate, and the like.
- Examples of the high-molecular-weight polyol include polyol obtained by ring-opening addition polymerization of a lactone compound such as ⁇ -caprolactone to the polyether polyol; polycaprolactone polyol obtained by ring-opening polymerization of a caprolactone monomer; polyether ester polyol; aromatic polyester polyol; Acrylic polyols; polyolefin polyols; polybutadiene polyols; castor oil-based polyols; polymer polyols obtained by polymerizing ethylenically unsaturated monomers such as acrylonitrile and styrene in the presence of polyether ester polyols.
- a lactone compound such as ⁇ -caprolactone
- polycaprolactone polyol obtained by ring-opening polymerization of a caprolactone monomer
- polyether ester polyol aromatic polyester polyol
- Acrylic polyols polyolefin polyols
- the total content of polyester polyol, polyether polyol and polycarbonate polyol (preferably polyester polyol) in the high-molecular-weight polyol is preferably 50% by mass or more, more preferably 70% by mass or more, and still more preferably 80% by mass or more. and preferably 100% by mass or less.
- the hydroxyl value of the high molecular weight polyol is preferably 20 mgKOH/g or more, more preferably 35 mgKOH/g or more, still more preferably 55 mgKOH/g or more, preferably 225 mgKOH/g or less, more preferably 120 mgKOH/g or less.
- the hydroxyl value of the polyester polyol is within the above range, the viscosity of the urethane prepolymer (A) described below can be suppressed.
- the hydroxyl value of the high molecular weight polyol can be measured according to JIS K 1557-1.
- the content of the high molecular weight polyol in the polyol (A1) is preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 75% by mass or more, and preferably 100% by mass or less.
- low-molecular-weight polyol examples include ethylene glycol (EG), 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,3 - pentanediol, 1,5-pentanediol, neopentyl glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol , 3-methyl-1,5-pentanediol, 2-butyl-2-ethyl-1,3-propanediol, 2-methyl-1,3-propanediol and other aliphatic diols; 1,4-cyclohexanediol , 1,4-cyclohexanedimethanol, hydrogenated bisphenol A
- the molecular weight of the low-molecular-weight polyol is preferably 50 or more, preferably 300 or less, more preferably 200 or less. If the molecular weight of the low-molecular-weight glycol is within such a range, it is easy to obtain a molded article having a target hardness when used in combination as a polyol component.
- polyisocyanate (A2) one or more may be used, and may be any of aliphatic polyisocyanate, alicyclic polyisocyanate, and aromatic polyisocyanate.
- the aliphatic polyisocyanate include hexamethylene diisocyanate (HDI), dimer acid diisocyanate, norbornene diisocyanate, lysine diisocyanate, tetramethylxylylene diisocyanate, and the like; and examples of the alicyclic polyisocyanate include isophorone diisocyanate (IPDI) , hydrogenated diphenylmethane diisocyanate (hydrogenated MDI), hydrogenated xylylene diisocyanate (hydrogenated XDI), cyclohexane diisocyanate, dicyclohexylmethane diisocyanate, isophorone diisocyanate, etc.; (MDI; its 4,4', 2,4' or 2,2
- the molar ratio (NCO/OH) of the isocyanate groups contained in the polyisocyanate (A2) to the hydroxyl groups contained in the polyol (A1) is preferably 2 or more, more preferably 3 or more, and preferably 20 or less. It is more preferably 15 or less.
- the reaction between the polyol (A1) and the polyisocyanate (A2) may be carried out without solvent or in an organic solvent.
- organic solvent include ester solvents such as ethyl acetate and n-butyl acetate; ketone solvents such as acetone and methyl ethyl ketone; and aromatic hydrocarbon solvents such as toluene.
- the organic solvent is desirably removed by heating under reduced pressure, thin film distillation, or the like during or after the reaction.
- the reaction temperature of the polyol (A1) and the polyisocyanate (A2) is preferably, for example, 50 to 90° C.
- the reaction time is preferably, for example, 2 to 24 hours
- the reaction pressure is normal pressure, increased pressure, Either reduced pressure may be used.
- a known reaction method such as batch, semi-continuous, or continuous can be selected.
- the reaction atmosphere of the polyol (A1) and the polyisocyanate (A2) may be an inert gas atmosphere such as nitrogen or argon, or may be a dry air atmosphere.
- the conditions may be such that no mixing occurs.
- a urethanization catalyst may coexist as necessary.
- the catalyst can be appropriately added at any stage of the raw material charging process and the reaction process.
- the method of adding the catalyst may be batch, divided, continuous, or the like.
- the urethanization catalyst one or two or more can be used.
- nitrogen-containing compounds such as triethylamine, tributylamine, benzyldibutylamine, triethylenediamine, and N-methylmorpholine
- titanium tetrabutoxide titanium tetrabutoxide
- dibutyltin oxide Organometallic compounds such as dibutyltin dilaurate, tin 2-ethylcaproate, zinc naphthenate, cobalt naphthenate, zinc 2-ethylcaproate, molybdenum glycolate, potassium acetate, zinc stearate, tin octoate, dibutyltin dilaurate
- examples include inorganic compounds such as iron chloride and zinc chloride.
- the urethane prepolymer (A) has an isocyanate group at its end.
- the isocyanate group equivalent weight of the urethane prepolymer (A) is preferably 150-350 g/mol, more preferably 200-300 g/mol.
- the isocyanate group equivalent of the urethane prepolymer can be measured according to JIS K1603-2007 Plastics-Polyurethane raw material aromatic isocyanate test method Part 1: Determination of isocyanate group content.
- the curing agent (ii) preferably contains a compound (B) having two or more functional groups capable of reacting with an isocyanate group (hereinafter sometimes referred to as "compound (B)").
- the compound (B) one type or two or more types can be used, and examples thereof include active hydrogen atom-containing compounds such as polyols and polyamines.
- polyol (B1) as the compound (B) one type or two or more types can be used, and examples thereof include the same compounds as those exemplified as the polyol (A1). Among them, high-molecular-weight polyols such as polyester polyols, polyether polyols and polycarbonate polyols are preferred, and polyester polyols are more preferred.
- the content of trifunctional or higher polyol is preferably 0.1% by mass or more, more preferably 1% by mass or more, still more preferably 3% by mass or more, and preferably 5% by mass or less, More preferably, it is 10% by mass or less.
- the content of the high molecular weight polyol in the polyol (B1) is preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, and preferably 100% by mass or less.
- the content of the low-molecular-weight polyol in the polyol (B1) is preferably 0.1 parts by mass or more, more preferably 1 part by mass or more, and still more preferably 3 parts by mass or more, relative to 100 parts by mass of the high-molecular-weight polyol. , preferably 10 parts by mass or less, more preferably 7 parts by mass or less.
- the content of the polyol (B1) in the compound (B) is preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, and preferably 100% by mass or less.
- polyamine (B2) as the compound (B) examples include aliphatic or alicyclic amine compounds such as ethylenediamine, propanediamine, hexanediamine, and isophoronediamine; phenylenediamine, 3,3'-dichloro-4,4'- aromatic amine compounds such as diaminodiphenylmethane and polyaminochlorophenylmethane compounds;
- Polyol (B1) is preferable as the compound (B).
- the first polyurethane resin composition preferably further contains an antistatic agent (E).
- the antistatic agent include quaternary ammonium salts (E1), organic metal salts (E2), ionic liquids (E3), antistatic agents (E4), antistatic auxiliary agents (E5), and the like.
- Primary ammonium salts (E1), organic metal salts (E2) and ionic liquids (E3) are preferred, and quaternary ammonium salts (E1) and organic metal salts (E2) are more preferred.
- the content of the antistatic agent (E) in the first urethane foam layer is defined by the present invention in terms of obtaining even better peel strength and antistatic properties, and the value of b/a. From the viewpoint of easy adjustment within the range, the content is preferably 0.1% by mass or more and less than 4.0% by mass, and more preferably 3.15% by mass or more and 3.95% by mass or less.
- the quaternary ammonium salt (E1) contains a cation component and an anion component, and contains a quaternary ammonium salt as a cation.
- the anion component preferably contains one or more selected from the group consisting of a sulfate anion and a sulfonate anion, more preferably a sulfate anion.
- the sulfate anion include carbon atoms such as methyl sulfate anion, ethyl sulfate anion, propyl sulfate anion, butyl sulfate anion, pentyl sulfate anion, hexyl sulfate anion, heptyl sulfate anion and octyl sulfate anion.
- Examples thereof include alkyl sulfate anions having an alkyl group having 1 to 10 carbon atoms (preferably 1 to 5 carbon atoms).
- Examples of the sulfonate anion include carbon atoms such as methanesulfonate anion, ethanesulfonate anion, propanesulfonate anion, butanesulfonate anion, pentanesulfonate anion, hexanesulfonate anion, heptanesulfonate anion, and octanesulfonate anion.
- Examples thereof include alkanesulfonate anions having an alkyl group having 1 to 10 carbon atoms (preferably 1 to 5 carbon atoms).
- the quaternary ammonium cation is preferably a cation represented by the following formula (1).
- R 1 to R 4 each independently represent an aliphatic hydrocarbon group having 1 to 20 carbon atoms.
- Aliphatic hydrocarbon groups represented by R 1 , R 2 , R 3 and R 4 include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, Linear or branched alkyl groups such as decyl group, undecyl group, dodecyl group, tridecyl group, butadecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, icosyl group; ethenyl group, propenyl group , butenyl group, pentenyl group, hexenyl group, heptenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group
- the number of carbon atoms in the aliphatic hydrocarbon groups represented by R 1 , R 2 , R 3 and R 4 is preferably 1-15, more preferably 1-12.
- the total number of carbon atoms of the aliphatic hydrocarbon groups represented by R 1 , R 2 , R 3 and R 4 is preferably 4-40, more preferably 6-30, and still more preferably 10-20. be.
- At least one of R 1 , R 2 , R 3 and R 4 is preferably an aliphatic hydrocarbon group having 3-20 (preferably 4-15) carbon atoms.
- the quaternary ammonium salt (E1) is preferably a combination of a sulfate anion and a quaternary ammonium cation represented by formula (1).
- Both the quaternary ammonium salt (E1) and the ionic liquid (E3) described later are composed of a cation component and an anion component, but the quaternary ammonium salt is a molecular solvent. and exhibit ionic conductivity only through a solvent, whereas ionic liquids exhibit ionic conductivity without the addition of a molecular solvent.
- the content of the quaternary ammonium salt (E1) in the polyurethane resin molded article is preferably 0.5% by mass or more, more preferably 1% by mass or more, and still more preferably 2% by mass or more. is 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7% by mass or less.
- organic metal salt (E2) examples include bis(perfluoroalkanesulfonyl)imide metal salts such as trifluoromethanesulfonic acid and bis(trifluoromethanesulfonyl)imide metal salts; perfluoroalkanesulfonyl)methane metal salts; alkylsulfonic acid metal salts; benzenesulfonic acid metal salts; alkylbenzenesulfonic acid metal salts;
- the metal component of the organic metal salt (E2) for example, from the viewpoint of solubility in an organic solvent, alkali metals such as lithium, sodium, and potassium, or alkaline earth metals such as magnesium are preferable, and lithium is particularly preferable. preferable.
- the content of the organic metal salt (E2) in the polyurethane resin molding is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and still more preferably 0.3% by mass or more, It is preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less.
- the mass ratio (E1/E2) of the quaternary ammonium salt (E1) and the organometallic salt (E2) even better peel strength and antistatic properties are obtained, and the b/a is preferably in the range of 1/1 or more and 10/1 or less, more preferably 3/1 or more and 8/1 or less, from the viewpoint that the value of is easily adjusted to the range defined by the present invention.
- the ionic liquid (E3) represents a salt having a melting point of 100°C or less under atmospheric pressure (1013 hPa), and is preferably liquid at room temperature (25°C) under atmospheric pressure (1013 hPa).
- the ionic liquid (E3) contains, as a cationic component, one or more selected from the group consisting of imidazolium cations, pyridinium cations, pyrrolidinium cations, piperidinium cations and quaternary ammonium cations. However, the ionic liquid (E3) is different from the quaternary ammonium salt (E1).
- Examples of the ionic liquid (E3) include 1-ethyl-3-methyl-imidazolium sulfonic acid methyl salt, 1-ethyl-3-methyl-imidazolium ethyl sulfate, 1-ethyl-3-methyl-imidazolium Thiocyanate, 1-ethyl-3-methyl-imidazolium acetate, 1-butyl-3-methyl-imidazolium sulfonic acid methyl salt, 1-butyl-3-methyl-imidazolium ethyl sulfate, 1-butyl-3-methyl -imidazolium thiocyanate, 1-butyl-3-methyl-imidazolium acetate, among others, 1-ethyl-3-methyl-imidazolium ethyl sulfate, 1-ethyl-3-methyl-imidazolium Thiocyanate is preferred due to its superior antistatic performance. These may be used alone or in combination of two or more.
- the content of the ionic liquid (E3) in the polyurethane resin molding is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 1% by mass or more, and preferably 10% by mass. % or less, more preferably 5 mass % or less, and still more preferably 3 mass % or less.
- antistatic agent (E4) examples include cationic antistatic compounds such as methanesulfonate derivatives and p-toluenesulfonate derivatives.
- Examples of the antistatic auxiliary agent (E5) include cyclic ketones, sorbitan fatty acid esters, lactone-based monomers, and the like.
- Examples of the cyclic ketones include cyclopentanone, cyclohexanone, cycloheptanone and derivatives thereof, and examples of the sorbitan fatty acid esters include sorbitan sesquioleate, sorbitan monooleate, sorbitan monostearate and sorbitan monolau.
- lactone monomers such as ⁇ -propiolactone, ⁇ -butyrolactone, ⁇ - Examples include lactone monomers such as valerolactone, ⁇ -caprolactone, ⁇ -crotonolactone, and the like.
- All or part of the antistatic agent may be contained in the main agent (i), and from the viewpoint of uniform mixing and curing reaction control, it is preferable that the whole is contained in the curing agent (ii). .
- the first polyurethane resin composition preferably contains a foaming agent.
- a foaming agent By including a foaming agent, the polyurethane resin composition can be foamed. Water is preferred as the blowing agent.
- the content of the foaming agent is preferably 0.01 parts by mass or more, more preferably 0.05 parts by mass or more, and preferably 0.8 parts by mass or less, relative to 100 parts by mass of the compound (B). More preferably, it is 0.4 parts by mass or less. When the content of the foaming agent is within the above range, it is easy to realize a stable foaming state.
- the urethane resin composition may further contain a foaming aid.
- a foaming assistant one or two or more can be used.
- Compounds (hydrocarbon compounds or halogenated hydrocarbon compounds, preferably halogenated hydrocarbon compounds) with low boiling points for example, 50° C. or lower, preferably 40° C. or lower
- low boiling points for example, 50° C. or lower, preferably 40° C. or lower
- 1,3,3-pentafluorobutane, methylene chloride, and pentane 1,3,3-pentafluorobutane, methylene chloride, and pentane
- Part or all of the foaming agent and the foaming aid may be contained in at least one of the main agent (i) and the curing agent (ii), and all of them should be contained in the curing agent (ii). is preferred.
- the first polyurethane resin composition preferably further contains a catalyst (D).
- a catalyst (D) one or more can be used. Examples include triethylamine, triethylenediamine, palmityldimethylamine, pentamethyldiethylenetriamine, N,N-dimethylaminoethyl ether, dimethylethanolamine, tri amine compounds such as ethanolamine, N,N,N',N'-tetramethylhexamethylenediamine, N-methylimidazole, N-ethylmorpholine, toluenediamine, 4,4'-diaminodiphenylmethane, or dioctyltin dilaurate; Organometallic compounds such as stannus octoate and dibutyltin dilaurate are included.
- the catalyst (D) triethylenediamine and N,N-dimethylaminoethyl ether are more preferable from the viewpoint of foaming control.
- the content of the catalyst (D) is preferably 0.1 parts by mass or more, more preferably 0.2 parts by mass or more, and preferably 1.5 parts by mass with respect to 100 parts by mass of the compound (B). Below, more preferably 1 part by mass or less. When the content of the catalyst (D) is within the above range, it becomes easy to stabilize the foaming state.
- Part or all of the catalyst (D) may be contained in at least one of the main agent (i) and the curing agent (ii), and more preferably all of the catalyst (D) is contained in the curing agent (ii). preferable.
- the first polyurethane resin composition may contain other additives.
- Other additives include flame retardants, foam stabilizers, chain extenders, plasticizers, fillers, colorants, weather stabilizers, light stabilizers, antioxidants, and the like.
- foam stabilizer one or more of them can be used, and examples thereof include silicon compounds such as polydimethylsiloxane and polysiloxane-polyalkylene oxide block copolymers, metal soaps, ethylene oxides of alkylphenols and fatty acids, and and/or surfactants such as propylene oxide adducts.
- the plasticizer one or more kinds can be used, and examples thereof include an adipate-based polyester plasticizer and a benzoic acid-based polyester plasticizer.
- the other additives may be contained in the main agent (i) or may be contained in the curing agent (ii).
- the first polyurethane resin composition can be produced by mixing the main agent (i) and the curing agent (ii).
- the molar ratio (NCO/active hydrogen atom-containing group) between the isocyanate group and the active hydrogen atom-containing group such as a hydroxyl group and -NH- group is preferably is 0.7 or more, more preferably 0.85 or more, preferably 1.2 or less, more preferably 1.1 or less.
- the molar ratio (NCO/active hydrogen atom-containing group) is within the above range, the strength, flexibility and abrasion resistance of the resulting polyurethane resin molded product can be enhanced.
- the foaming agent When foaming the first polyurethane resin composition, the foaming agent may be used, hollow beads may be added, or mechanical foaming or chemical foaming may be performed. Also, a foam molding machine such as a low-pressure foam molding machine or an injection foam molding machine can be used.
- the first urethane foam layer can be formed by a molding method (open injection of the mixed foaming liquid discharged from the molding machine into the mold) or an injection molding method (direct injection of the mixed foaming liquid into a closed mold directly connected to the discharge port of the molding machine). It can be molded by such as.
- an open mold consisting of an upper mold and a lower mold; a planar mold; a cylindrical mold; a recessed closed mold, etc.
- Metals such as iron and aluminum; and resins such as epoxy resin can be used as the material of the molding die.
- the second urethane foam layer is composed of a urethane resin foam.
- the urethane resin include polyether-based urethane resin, polyester-based urethane resin, and polycarbonate-based urethane resin.
- a polyester-based urethane resin represents a urethane resin having a unit derived from polyester in the molecular chain.
- the density of the second urethane foam layer is preferably 0.3 g/cm 3 or more, more preferably 0.4 g/cm 3 or more, and preferably 0.7 g/cm 3 or less, more preferably 0.6 g. / cm 3 or less.
- the hardness of the second urethane foam layer is preferably 40 or more, more preferably 40 or more, when measured by a spring hardness test (type C) in accordance with Japanese Industrial Standards JIS K 7312-1996 (hardness test). It is 50 or more, preferably 90 or less, more preferably 80 or less.
- the foamed cell diameter is preferably 20 ⁇ m or more, more preferably 40 ⁇ m or more, still more preferably 60 ⁇ m or more, and preferably 400 ⁇ m or less, more preferably 300 ⁇ m or less, further preferably 200 ⁇ m or less. be.
- the average cell diameter of the foam cells in the range exceeding 200 ⁇ m from the interface with the first urethane foam layer is a ( ⁇ m), and 200 ⁇ m or less from the interface with the first urethane foam layer.
- b/a is less than 1.2, preferably 1.15 or less, more preferably 1.1 or less, for example, 0.1. It may be 7 or more, 0.8 or more, or 0.9 or more. Examples of the method for adjusting the b/a value include a method for adjusting the antistatic agent (E).
- the second urethane foam layer can be produced by foaming, molding, and curing the second polyurethane resin composition containing the main agent (i') and the curing agent (ii').
- the main agent (i') preferably contains a urethane prepolymer (A') having an isocyanate group.
- the urethane prepolymer (A') is preferably a reaction product of polyol (A1') and polyisocyanate (A2'), and preferably has an isocyanate group.
- the isocyanate group is preferably at the end of the urethane prepolymer (A').
- Examples of the polyol (A1') include compounds similar to the compounds exemplified as the polyol (A1), and examples of the polyisocyanate (A2') include compounds exemplified as the polyisocyanate (A2). Similar compounds can be mentioned.
- the molar ratio (NCO/OH) of the isocyanate groups contained in the polyisocyanate (A2') to the hydroxyl groups contained in the polyol (A1') is preferably 2 or more, more preferably 3 or more, and preferably 20. 15 or less, more preferably 15 or less.
- the reaction between the polyol (A1') and the polyisocyanate (A2') may be carried out without solvent or in an organic solvent.
- organic solvent include ester solvents such as ethyl acetate and n-butyl acetate; ketone solvents such as acetone and methyl ethyl ketone; and aromatic hydrocarbon solvents such as toluene.
- the organic solvent is desirably removed by heating under reduced pressure, thin film distillation, or the like during or after the reaction.
- the reaction temperature of the polyol (A1′) and the polyisocyanate (A2′) is preferably, for example, 50 to 90° C.
- the reaction time is preferably, for example, 2 to 24 hours
- the reaction pressure is normal pressure, increased Either pressure or reduced pressure may be used.
- a known reaction method such as batch, semi-continuous, or continuous can be selected.
- the reaction atmosphere of the polyol (A1′) and the polyisocyanate (A2′) may be an inert gas atmosphere such as nitrogen or argon, or may be a dry air atmosphere.
- the conditions may be such that moisture does not mix.
- the above-described urethanization catalyst may coexist as necessary.
- the catalyst can be appropriately added at any stage of the raw material charging process and the reaction process.
- the method of adding the catalyst may be batch, divided, continuous, or the like.
- the isocyanate group equivalent weight of the urethane prepolymer (A') is preferably 150-350 g/mol, more preferably 200-300 g/mol.
- the isocyanate group equivalent of the urethane prepolymer can be measured according to JIS K1603-2007 Plastics-Polyurethane raw material aromatic isocyanate test method Part 1: Determination of isocyanate group content.
- the curing agent (ii') preferably contains a compound (B') having two or more functional groups capable of reacting with an isocyanate group (hereinafter sometimes referred to as "compound (B')").
- the compound (B') one type or two or more types can be used, and examples thereof include active hydrogen atom-containing compounds such as polyols and polyamines.
- polyol (B1') as the compound (B') examples include compounds similar to the compounds exemplified as the polyol (B1). Among them, high-molecular-weight polyols such as polyester polyols, polyether polyols and polycarbonate polyols are preferred, and polyester polyols are more preferred.
- the content of trifunctional or higher polyol is preferably 0.1% by mass or more, more preferably 1% by mass or more, still more preferably 3% by mass or more, and preferably 10% by mass or less, More preferably, it is 7% by mass or less.
- the content of the high molecular weight polyol in the polyol (B1') is preferably 50% by mass or more, more preferably 80% by mass or more, still more preferably 85% by mass or more, and preferably 100% by mass or less.
- the content of the low-molecular-weight polyol in the polyol (B1′) is preferably 0.1 parts by mass or more, more preferably 1 part by mass or more, and still more preferably 3 parts by mass with respect to 100 parts by mass of the high-molecular-weight polyol. or more, preferably 10 parts by mass or less, more preferably 7 parts by mass or less.
- the content of the polyol (B1′) in the compound (B′) is preferably 50% by mass or more, more preferably 80% by mass or more, still more preferably 90% by mass or more, and preferably 100% by mass or less. be.
- Examples of the polyamine (B2') as the compound (B') include compounds similar to the compounds exemplified as the polyamine (B2).
- Polyol (B1') is preferable as the compound (B').
- the second polyurethane resin composition preferably further contains an antistatic agent (E').
- the antistatic agent include quaternary ammonium salts (E1'), organic metal salts (E2'), ionic liquids (E3'), antistatic agents (E4'), antistatic assistants (E5'), and the like.
- Preferred are quaternary ammonium salts (E1′), organic metal salts (E2′) and ionic liquids (E3′), more preferred are quaternary ammonium salts (E1′) and organic metal salts (E2′). .
- the mass ratio (E1'/E2') between the quaternary ammonium salt (E1') and the organometallic salt (E2') provides even better peel strength and antistatic properties, and
- the range of 1/1 or more and 10/1 or less is preferable, and the range of 3/1 or more and 8/1 or less is more preferable from the point that the value of b/a can be easily adjusted to the range specified in the present invention.
- the quaternary ammonium salt (E1'), the organometallic salt (E2'), the ionic liquid (E3'), the antistatic agent (E4'), and the antistatic auxiliary agent (E5') include the Compounds similar to those exemplified as the quaternary ammonium salt (E1), the organic metal salt (E2), the ionic liquid (E3), the antistatic agent (E4), and the antistatic auxiliary agent (E5) can be mentioned.
- the value of b/a is defined in the present invention, in that even better peel strength and antistatic properties can be obtained. 0.1% by mass or more and 3.0% by mass or less is preferable because it is easy to adjust the range.
- All or part of the antistatic agent may be contained in the main agent (i'), and from the viewpoint of uniform mixing and curing reaction control, the entirety of the antistatic agent should be contained in the curing agent (ii'). is preferred.
- the second urethane resin composition preferably contains the foaming agent described above, and may contain the foaming auxiliary agent described above.
- the foaming agent and the foaming aid may be partially or wholly contained in at least one of the main agent (i′) and the curing agent (ii), and may be contained entirely in the curing agent (ii′). preferably.
- the first polyurethane resin composition preferably further contains a catalyst (D').
- the catalyst (D') include compounds similar to the compounds exemplified as the catalyst (D).
- the content of the catalyst (D') is preferably 0.15 parts by mass or more, more preferably 0.3 parts by mass or more, and preferably 2 parts by mass with respect to 100 parts by mass of the compound (B'). 1.5 parts by mass or less, more preferably 1.5 parts by mass or less. When the content of the catalyst (D') is within the above range, it becomes easy to stabilize the foaming state.
- Part or all of the catalyst (D') may be contained in at least one of the main agent (i') and the curing agent (ii'), and the entirety of the catalyst (D') may be contained in the curing agent (ii'). It is more preferable to be
- the second polyurethane resin composition may contain the other additives described above.
- the other additive may be contained in the main agent (i') or may be contained in the curing agent (ii').
- the second polyurethane resin composition can be produced by mixing the main agent (i') and the curing agent (ii').
- the molar ratio (NCO/active hydrogen atom-containing group) of the isocyanate group to the active hydrogen atom-containing group such as a hydroxyl group and -NH- group is , preferably 0.7 or more, more preferably 0.85 or more, preferably 1.2 or less, more preferably 1.1 or less.
- the molar ratio (NCO/active hydrogen atom-containing group) is within the above range, the strength, flexibility and abrasion resistance of the resulting polyurethane resin molded product can be enhanced.
- the foaming agent When foaming the second polyurethane resin composition, the foaming agent may be used, hollow beads may be added, or mechanical foaming or chemical foaming may be performed. Moreover, a foam molding machine such as a low-pressure foam molding machine or an injection foam molding machine can be used.
- the second urethane foam layer can be formed by molding method (open injection of the mixed foaming liquid discharged from the molding machine into the mold), injection molding method (direct injection of the mixed foaming liquid into the closed mold directly connected to the discharge port of the molding machine). It can be molded by such as.
- an open mold consisting of an upper mold and a lower mold; a planar mold; a cylindrical mold; a recessed closed mold, etc.
- Metals such as iron and aluminum; and resins such as epoxy resin can be used as the material of the molding die.
- the laminate of the present invention can be produced by forming a first urethane foam layer and then forming a second urethane foam layer on the first urethane foam layer.
- the laminate of the present invention has good adhesion between layers even when molded under high temperature and high humidity, and is useful as a shoe sole.
- polyol a a polyester polyol having a hydroxyl value of 56.1 mgKOH/g synthesized from ethylene glycol (EG)/1,4-butylene glycol (1,4BG) and adipic acid (AA).
- EG/1 , 4BG 5/5 molar ratio.
- 443.5 parts were separately charged and mixed, and reacted at 60°C for 8 hours under a nitrogen stream to contain an isocyanate group-terminated urethane prepolymer (A) having an NCO equivalent of 250.
- a main agent (X) was obtained.
- polyol c a polyester polyol having a hydroxyl value of 56 synthesized from EG/1,4BG and AA; EG
- Resin composition (A-1) was prepared, 160 g was injected into a mold (100 mm ⁇ 200 mm ⁇ 8 mm) preheated to 40 ° C., the mold was immediately covered, and then 2.5 at 40 ° C. It was left for 1 minute to form the first layer. After removing from the mold, the first layer was placed in a mold of (100 mm x 200 mm x 20 mm).
- Example 2 A laminate was obtained in the same manner as in Example 1, except that the compositions of the resin compositions of the first layer and the second layer were changed as shown in Table 3, respectively.
- Examples 1 and 2 of the present invention exhibited high peel strength. At the same time, it had excellent antistatic performance.
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Abstract
Description
前記第一のウレタン発泡層は、ウレタン樹脂の発泡体から構成される。前記ウレタン樹脂としては、ポリエーテル系ウレタン樹脂、ポリエステル系ウレタン樹脂、ポリカーボネート系ウレタン樹脂等が挙げられる。本発明において、例えば、ポリエステル系ウレタン樹脂とは、分子鎖中に、ポリエステルに由来する単位を有するウレタン樹脂を表すものとする。
前記第二のウレタン発泡層は、ウレタン樹脂の発泡体から構成される。前記ウレタン樹脂としては、ポリエーテル系ウレタン樹脂、ポリエステル系ウレタン樹脂、ポリカーボネート系ウレタン樹脂等が挙げられる。本発明において、例えば、ポリエステル系ウレタン樹脂とは、分子鎖中に、ポリエステルに由来する単位を有するウレタン樹脂を表すものとする。
法(成形機の吐出口に直結したクローズドモールドに混合発泡液を直接射出する)等により成形することができる。
反応容器に、イソシアネート成分として、4,4’-ジフェニルメタンジイソシアネート(以下「4,4’MDI」と略称。商標:ミリオネート MT、日本ポリウレタン工業株式会社製)543部と、カルボジイミド変性MDI(商標:コスモネート LL、三井化学ポリウレタン株式会社製)28.6部を仕込み、攪拌を開始した。
イソシアネート基反応性化合物(B1)としてポリオールb(2M1,3PD/1,4BGとAAから合成された水酸基価74.8のポリエステルポリオール。2M1,3PD/1,4BG=6/4モル比のもの)98.0部と、EG7.6部、発泡剤として水(C)0.17部、触媒(D)としてトリエチレンジアミン(TEDA)1.00部、N-エチル-N,N-ジメチル-N-ドデシルアンモニウムエチル硫酸塩7.2部、トリフルオロメタンスルホン酸リチウム1.2部を配合し、充分に撹拌、混合して、硬化剤(Y11)を調製した。
ポリオール、帯電防止剤の組成を表1に示すように変更したこと以外は調製例2と同様にして、硬化剤(Y12)~(Y15)を得た。
イソシアネート基反応性化合物(B2)としてポリオールc(EG/1,4BGとAAから合成された水酸基価56のポリエステルポリオール。EG/1,4BG=5/5モル比のもの。)96.00部と、EG8.10部、発泡剤として水(C)0.35部、触媒(D)としてトリエチレンジアミン(TEDA)0.80部、N-エチル-N,N-ジメチル-N-ドデシルアンモニウムエチル硫酸塩4.8部、トリフルオロメタンスルホン酸リチウム0.80部を配合し、充分に撹拌、混合して、硬化剤(Y21)を調製した。
ポリオール、帯電防止剤の組成を表2に示すように変更したこと以外は調製例7と同様にして、硬化剤(Y22)~(Y25)を調製した。
≪2液硬化型発泡ポリウレタン構成体の製造≫
構造体を作成する室内を室温30℃、相対湿度80%に調整した。次いで、混合容器に前記主剤(X)と前記硬化剤(Y11)を、(X)/(Y11)=100/111質量比で配合し攪拌、混合して、本発明の2液硬化型発泡ポリウレタン樹脂組成物(A-1)を調整して、40℃に予め加熱した金型(100mm×200mm×8mm)中に160gを注入し、直ちに金型の蓋をした後、40℃で2.5分間放置し、第1層目を作成した。金型から取り出し、その後、(100mm×200mm×20mm)の金型内に第1層目を入れた。
1層目、2層目の樹脂組成物の組成を、それぞれ表3に示すように変更したこと以外は、実施例1と同様にして、積層体を得た。
≪2液硬化型発泡ポリウレタン構成体の製造≫
構造体を作成する室内を室温30℃、相対湿度80%に調整した。混合容器に前記主剤(X)と前記硬化剤(Y13)を、(X)/(Y13)=100/150質量比で配合し攪拌、混合して、本発明の2液硬化型発泡ポリウレタン樹脂組成物(A-3)を調整して、40℃に予め加熱した金型(100mm×200mm×8mm)中に160gを注入し、直ちに金型の蓋をした後、40℃で2.5分間放置し、第1層目を作成した。金型から取り出し、その後、(100mm×200mm×20mm)の金型内に第1層目を入れた。
1層目、2層目の樹脂組成物の組成を、それぞれ表3に示すように変更したこと以外は、比較例1と同様にして、積層体を得た。
Claims (6)
- 第一のウレタン発泡層と、第二のウレタン発泡層とを有し、
前記第一のウレタン発泡層の密度が、0.8g/cm3以上1.2g/cm3以下であり、
前記第二のウレタン発泡層の密度が、0.3g/cm3以上0.7g/cm3以下であり、
前記第二のウレタン発泡層において、前記第一のウレタン発泡層との界面から200μmを超える範囲における発泡セルの平均セル径をa(μm)、前記第一のウレタン発泡層との界面から200μm以下の範囲における発泡セルの平均セル径をb(μm)としたとき、b/aが、1.2未満であることを特徴とする積層体。 - 前記第一のウレタン発泡層が、帯電防止剤(E)として、第4級アンモニウム塩(E1)と、有機金属塩(E2)とを含むものであり、前記第4級アンモニウム塩(E1)と前記有機金属塩(E2)との質量比(E1/E2)が、1/1以上10/1以下である請求項1記載の積層体。
- 前記第一のウレタン発泡層における静電防止剤(E)の含有率が、4.0質量%未満である請求項1又は2載の積層体。
- 前記第二のウレタン発泡層が、帯電防止剤(E’)として、第4級アンモニウム塩(E1’)と、有機金属塩(E2’’)とを含むものであり、前記第4級アンモニウム塩(E1’)と前記有機金属塩(E2’)との質量比(E1’/E2’)が、1/1以上10/1以下である請求項1~3のいずれか1項記載の積層体。
- 前記第二のウレタン発泡層における帯電防止剤(E’)の含有率が、3.0質量%以下である請求項1~4のいずれか1項載の積層体。
- 請求項1~5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靴底。
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CN1871304B (zh) | 2003-07-31 | 2010-04-21 | 大日本油墨化学工业株式会社 | 聚氨酯树脂模塑体及其制造方法 |
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2022
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- 2022-02-03 CN CN202280022662.1A patent/CN117062715A/zh active Pending
- 2022-02-03 KR KR1020237028847A patent/KR20230137388A/ko unknown
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Patent Citations (2)
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JPH09302059A (ja) * | 1996-03-05 | 1997-11-25 | Kao Corp | 靴底用ウレタンフォーム |
JP2002052551A (ja) * | 2000-06-28 | 2002-02-19 | World Properties Inc | 複合ポリウレタンフォームとその製造方法 |
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CN117062715A (zh) | 2023-11-14 |
JPWO2022219891A1 (ja) | 2022-10-20 |
JP7243941B2 (ja) | 2023-03-22 |
KR20230137388A (ko) | 2023-10-04 |
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