Coating compositions
    7.
    发明授权
    Coating compositions 失效
    涂料组合物

    公开(公告)号:US4801644A

    公开(公告)日:1989-01-31

    申请号:US915098

    申请日:1986-10-03

    申请人: Richard G. Coogan

    发明人: Richard G. Coogan

    摘要: Aqueous polyurethane dispersions useful as coating compositions wherein the polyurethane comprises the reaction product of(a) an isocyanate-terminated polyurethane prepolymer containing carboxylic acid salt groups formed by reacting:(i) a polyisocyanate component containing at least 1% by weight of diphenylmethane-2,4'-diisocyanate, and(ii) an active hydrogen containing component containing a polyol and a carboxy group containing diol or triol, and(b) an active hydrogen containing chain extender.

    摘要翻译: 可用作涂料组合物的水性聚氨酯分散体,其中聚氨酯包含(a)含有羧酸盐基团的异氰酸酯封端的聚氨酯预聚物的反应产物,其通过以下反应形成:(i)含至少1重量%的二苯基甲烷-2 ,4'-二异氰酸酯,和(ii)含有多元醇和含羧基的二醇或三醇的含活性氢成分,和(b)含活性氢的扩链剂。