Process for the production of elastomeric polyurethane moldings and the product of this process
申请人:Mobay Chemical Corporation
公开号:EP0002724A1
公开(公告)日:1979-07-11
This invention relates to a process for making elastomeric polyurethane reaction injection moldings from
(a) organic polyisocyanates
(b) polyhydroxyl compounds having molecular weights in the range from about 1,800 to about 10,000,
(c) a chain extender,
(d) a catalyst
(e) a blowing agent and,
(f) optionally the auxiliaries and additives commonly used in making polyurethanes,
where the catalyst used is a dialkyl tin dithiocarboxylate and the chain extender comprises at least 75% by weight of ethylene glycol based on the total amount of chain extender.
本发明涉及一种用以下材料制造弹性聚氨酯反应注塑模具的工艺
(a) 有机多异氰酸酯
(b) 分子量在约 1,800 至约 10,000 之间的聚羟基化合物、
(c) 扩链剂
(d) 催化剂
(e) 发泡剂和
(f) 通常用于制造聚氨酯的辅助剂和添加剂、
其中所用催化剂为二烷基二硫代羧酸锡,扩链剂包括至少 75%(按重量计)的乙二醇(基于扩链剂总量)。