Improved polyurea reaction injection molding process
    9.
    发明公开
    Improved polyurea reaction injection molding process 失效
    Polyharnstoff-Reaktionsspritzgussverfahren。

    公开(公告)号:EP0284254A2

    公开(公告)日:1988-09-28

    申请号:EP88302136.2

    申请日:1988-03-11

    摘要: A reaction system for use in making a reaction injection moulded elastomer, said system comprising the following components :

    (A) a polyisocyanate composition comprising a reaction product of a stoichiometric excess of an organic polyisocyanate and :

    (i) a polymeric polyol having an average nominal hydroxyl functionality greater than 2 and an average hydroxyl equivalent weight of from about 500 to about 5000, and
    (ii) a polymeric polyamine having an average nominal primary and/or secondary amino functionality of from about 2 to about 3 and an average amine equivalent weight of from about 500 to about 5000, the polyol and the polyamine having glass transition temperatures below room temperature.

    (B) an isocyanate-reactive composition comprising at least one imino-functional compound.

    摘要翻译: 用于制备反应注射成型弹性体的反应体系,所述体系包含以下组分:(A)多异氰酸酯组合物,其包含化学计量过量的有机多异氰酸酯的反应产物和:(i)具有平均标称值的聚合多元醇 羟基官能度大于2,平均羟基当量为约500至约5000,和(ii)具有约2至约3的平均标称伯和/或仲氨基官能度的平均胺当量重量的聚合多胺 为约500至约5000,多元醇和玻璃化转变温度低于室温的多胺。 (B)包含至少一种亚氨基官能化合物的异氰酸酯反应性组合物。