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    • 89. 发明申请
    • ARTIFICIAL LEATHER
    • 人造皮革
    • US20100239846A1
    • 2010-09-23
    • US12713877
    • 2010-02-26
    • Toshihiro Tsubota
    • Toshihiro Tsubota
    • D06N3/14B32B3/26B32B27/40
    • B32B27/40C08G18/10C08G18/44C08G18/4854C09D175/06C09D175/08D06N3/14D06N3/145Y10T428/249988Y10T428/31554C08G18/307
    • An artificial leather comprising a protective layer, a surface layer, and a fibrous substrate, successively laminated, wherein a polyurethane resin forming the surface layer is obtained by reacting a urethane polyisocyanate prepolymer (A) and a polyol component (C) containing a urethane polyol prepolymer (B), the (A) has an equivalent ratio (isocyanate groups/hydroxyl groups) of from 2.0 to 6.0, and has a number average molecular weight of from 3,000 to 30,000, the (B) has an equivalent ratio (isocyanate groups/hydroxyl groups) of from 0.2 to 0.8, and has a number average molecular weight of from 3,000 to 30,000, an equivalent ratio between the urethane polyisocyanate prepolymer (A) and the polyol component (C) (isocyanate groups/active hydrogen groups) is from 1.01 to 2.0, and a weight ratio between the urethane polyisocyanate prepolymer (A) and the polyol component (C) ((A)/(C)) is from 0.7 to 2.0.
    • 一种连续层压的保护层,表面层和纤维基材的人造革,其中形成表面层的聚氨酯树脂通过使氨基甲酸酯多异氰酸酯预聚物(A)和含有氨基甲酸酯多元醇的多元醇成分(C) 预聚物(B)中,(A)的当量比(异氰酸酯基/羟基)为2.0〜6.0,数均分子量为3000〜30,000,(B)具有当量比(异氰酸酯基 /羟基)为0.2〜0.8,数均分子量为3000〜30,000,氨基甲酸酯多异氰酸酯预聚物(A)与多元醇成分(C)的当量比(异氰酸酯基/活性氢基)为 为1.01〜2.0,氨基甲酸酯多异氰酸酯预聚物(A)与多元醇成分(C)((A)/(C))的重量比为0.7〜2.0。