Crosslinkable polyester/isocyanate compositions suitable for preparing composite manufactured articles, in particular by means of injection processes, process for preparing them and their use
申请人:SIR INDUSTRIALE S.p.A.
公开号:EP0570735A2
公开(公告)日:1993-11-24
The present invention relates to a crosslinkable polyester/isocyanate composition suitable for preparing composite manufactured articles endowed with high structural mechanical properties, by means of injection processes, comprising:
A - a polyfunctional isocyanate;
B - an unsaturated polyester resin, or a vinyl ester resin, or a mixture of both said resins, wherein said resin can contain free hydroxy groups;
C - a free-radical polymerization initiator;
D - a promoter of decomposition of (C) initiator;
E - a catalyst of (A) isocyanate trimerization.
本发明涉及一种可交联聚酯/异氰酸酯组合物,适用于通过注塑工艺制备具有高结构机械性能的复合制成品,该组合物包括
A - 多官能异氰酸酯;
B - 不饱和聚酯树脂,或乙烯基酯树脂,或上述两种树脂的混合物,其中所述 树脂可含有游离羟基;
C - 自由基聚合引发剂
D - (C)引发剂的分解促进剂;
E - (A) 异氰酸酯三聚的催化剂。