Reaction injection molding polyurea resin composition
    1.
    发明授权
    Reaction injection molding polyurea resin composition 失效
    反应注射成型聚脲树脂组合物

    公开(公告)号:US5331051A

    公开(公告)日:1994-07-19

    申请号:US928349

    申请日:1992-08-12

    摘要: A polyurea resin molding composition for RIM use comprising (a) polyoxyalkylenpolyamine having an average molecular weight greater than about 400 and a plurality of terminal primary or secondary amino groups, (b) an aromatic polyamine and/or xylylenediamine and (c) a polyisocyanate. The component (a) contains dispersed therein a polymer prepared by the in situ polymerization of at least two different olefinically unsaturated monomers in the presence of a radical polymerization initiator, the ratio of the average amino equivalent of said polyamines (a) and (b) in combination to the average NCO equivalent of said polyisocyanate (c) being between about 1:0.7 to 1:1.5.

    摘要翻译: 一种用于RIM用途的聚脲树脂模塑组合物,其包含(a)平均分子量大于约400的聚氧亚烷基多胺和多个末端伯或仲氨基,(b)芳族多胺和/或苯二甲胺和(c)多异氰酸酯。 组分(a)在其中分散有在自由基聚合引发剂存在下通过至少两种不同的烯属不饱和单体的原位聚合制备的聚合物,所述多胺(a)和(b)的平均氨基当量的比例 与所述多异氰酸酯(c)的平均NCO当量的组合在约1:0.7至1:1.5之间。