Polyurethane adhesive mixtures
    8.
    发明授权
    Polyurethane adhesive mixtures 失效
    聚氨酯胶粘剂混合物

    公开(公告)号:US4731410A

    公开(公告)日:1988-03-15

    申请号:US881244

    申请日:1986-07-02

    摘要: Polyurethane adhesive mixtures or polyurethane adhesive solutions contain(a) a polyurethane elastomer which advantageously has a mean molecular weight of not less than 30,000 and which is prepared by reacting(i) one or more essentially linear polyesterpolyols and(ii) one or more chain extenders with(iii) a mixture of 4,4'- and 2,4'-diphenylmethane diisocyanate isomers in a weight ratio of from 60:40 to 40:60 and(b) if appropriate, additives and/or organic solvents.

    摘要翻译: 聚氨酯粘合剂混合物或聚氨酯粘合剂溶液包含(a)有利地具有不小于30,000的平均分子量的聚氨酯弹性体,其通过(i)一种或多种基本上线性的聚酯多元醇和(ii)一种或多种扩链剂 与(iii)重量比为60:40至40:60的4,4'-和2,4'-二苯基甲烷二异氰酸酯异构体的混合物和(b)如果合适的话,添加剂和/或有机溶剂。