申请人:Tosoh Corporation
公开号:EP1312630A1
公开(公告)日:2003-05-21
Flexible polyurethane foams are produced by reacting a polyol and a polyisocyanate in the presence of a catalysts and other auxiliary agents, the process characterized in that a tin-based catalyst is not used. One process includes reacting a polyether polyol containing at least 5% by weight of an oxyethylene group in the chain and having a terminal secondary OH group, a toluene diisocyanate and/or a derivative, and one or more specified imidazole compounds, the process conducted in the absence of a tin-based catalyst.
柔性聚氨酯泡沫塑料是通过多元醇和多异氰酸酯在催化剂和其他辅助剂的存在下发生反应而生产的,该工艺的特点是不使用锡基催化剂。一种工艺包括使一种在链中含有至少 5%(按重量计)氧乙烯基并具有末端仲羟基的聚醚多元醇、一种甲苯二异氰酸酯和/或衍生物以及一种或多种特定咪唑化合物发生反应,该工艺在无锡基催化剂的情况下进行。