Reaction injection molding compositions and process
    8.
    发明授权
    Reaction injection molding compositions and process 失效
    反应注塑组合物和方法

    公开(公告)号:US4414174A

    公开(公告)日:1983-11-08

    申请号:US372897

    申请日:1982-04-29

    摘要: Replacement of one-third to two-thirds of the short chain diols in a polyisocyanate/polymeric polyol/short chain diol molding composition with a hydroxyalkyl-melamine provides shaped articles of increased high temperature stiffness and reduced heat sag. The hydroxyalkylmelamine is strongly catalytic for the isocyanatepolyol reaction.

    摘要翻译: 在具有羟基烷基 - 三聚氰胺的多异氰酸酯/聚合多元醇/短链二醇模塑组合物中用三分之一至三分之二的短链二醇替代提供增加的高温刚度和减少的热下垂的成型制品。 羟基烷基三聚氰胺对于异氰酸酯多元醇反应是强催化的。