The present invention is directed to a process for the production of polyurethane elastomer moldings by reacting a reaction mixture in a closed mold, wherein said reaction mixture comprises:
(a) an organic polyisocyanate;
(b) an organic active hydrogen group-containing compound having a molecular weight of from 1800to 12,000 and containing at least two active hydrogen groups;
(c) 1,3,5-triethyl-2, 6-diamino benzene and, optionally
(d) a catalyst for the reaction between hydroxyl groups and isocyanate groups, wherein component (c) is present in an amount of from 25 to 35 percent by weight based on the combined weight of components (b) and (c), wherein the amounts of components (a), (b) and (c) are such that the isocyanate index of the reaction mixture is from about 90 to 110, and wherein all of said components are processed via a one-shot process whereby (a) is mixed simultaneously eitherwith (b), (c) and (d) orwith a non-reacted premixture of some or all of (b), (c) and (d).
本发明涉及一种通过在封闭模具中对反应混合物进行反应来生产聚
氨酯弹性体模塑件的工艺,其中所述反应混合物包括:
(a) 有机多
异氰酸酯;
(b) 含有活性氢基的有机化合物,其分子量在 1800 至 12000 之间,并含有至少 两个活性氢基;
(c) 1,3,5-三乙基-2,6-二
氨基苯;以及
(d) 用于羟基和
异氰酸酯基反应的催化剂,其中组分(c)的含量为组分(b)和(c)总重量的 25%至 35%,其中组分(a)、(a)、(b)和(c)的用量使反应混合物的
异氰酸酯指数约为 90 至 110,其中所有所述组分均通过一次性工艺处理,即(a)与(b)、(c)和(d)同时混合,或与部分或全部(b)、(c)和(d)的未反应预混料混合。