Title:
METHOD FOR PRODUCING POLYURETHANE LAMINATE, AND POLYURETHANE LAMINATE OBTAINED BY THE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2010/137264
Kind Code:
A1
Abstract:
Disclosed is a method for producing a polyurethane laminate, which comprises: a melt-mixing step in which a urethane resin composition is formed by heating and melt-mixing a urethane prepolymer that is in a semi-solid state or in a solid state at room temperature, a chain extender and a temperature-sensitive urethanization catalyst exhibiting a specific exothermic peak temperature, within a temperature range lower than the exothermic peak temperature by 10-30˚C; a resin layer-forming step in which a urethane resin layer is formed on a sheet surface using the urethane resin composition; and a heating step in which the urethane resin layer is heated at a temperature not less than the exothermic peak temperature. Also disclosed is a polyurethane laminate that is a laminate of a composite fiber sheet, which is obtained by integrating a fiber sheet and a polymer elastic material by impregnation and has a plurality of pores in the surface layer, and a polyurethane resin layer that is arranged on the composite fiber sheet. The polyurethane laminate has a mixed layer having a thickness of not less than 10 μm. In the mixed layer, some parts of the polyurethane resin layer and the surface layer of the composite fiber sheet are present in an incompatible state since the parts of the polyurethane resin layer have entered into the pores.
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Inventors:
YONEDA, Hisao (2-1, Kaigandori 1-chome, Okayama-sh, Okayama 01, 〒7028601, JP)
米田久夫 (〒01 岡山県岡山市海岸通１丁目２番１号株式会社クラレ内 Okayama, 〒7028601, JP)
INOUE, Kazumasa (2-1, Kaigandori 1-chome, Okayama-sh, Okayama 01, 〒7028601, JP)
米田久夫 (〒01 岡山県岡山市海岸通１丁目２番１号株式会社クラレ内 Okayama, 〒7028601, JP)
INOUE, Kazumasa (2-1, Kaigandori 1-chome, Okayama-sh, Okayama 01, 〒7028601, JP)
Application Number:
JP2010/003393
Publication Date:
December 02, 2010
Filing Date:
May 20, 2010
Export Citation:
Assignee:
KURARAY CO., LTD. (1621, Sakazu Kurashiki-sh, Okayama 22, 〒7108622, JP)
株式会社クラレ (〒22 岡山県倉敷市酒津１６２１番地 Okayama, 〒7108622, JP)
YONEDA, Hisao (2-1, Kaigandori 1-chome, Okayama-sh, Okayama 01, 〒7028601, JP)
米田久夫 (〒01 岡山県岡山市海岸通１丁目２番１号株式会社クラレ内 Okayama, 〒7028601, JP)
株式会社クラレ (〒22 岡山県倉敷市酒津１６２１番地 Okayama, 〒7108622, JP)
YONEDA, Hisao (2-1, Kaigandori 1-chome, Okayama-sh, Okayama 01, 〒7028601, JP)
米田久夫 (〒01 岡山県岡山市海岸通１丁目２番１号株式会社クラレ内 Okayama, 〒7028601, JP)
International Classes:
B29C41/28; B32B27/40; D06N3/14; B29K75/00; B29K105/04
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Osaka Nakanoshima Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka 05, 〒5300005, JP)
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