The present invention relates to a process for the production of polyurethanes wherein a tertiary amine functionality is incorporated into the side chain of a diaminobenzoate to form catalytic polyurethane chain extender. These chain extenders are polyurethane catalysts which provide adequate cure without residual odor and safety hazards associated with the more traditional tertiary amine catalysts. When reacted with the isocyanate reactive group the non-tertiary amine portion of the chain extender is bound to the polymeric network thereby preventing diffusion of the catalyst species from the polyurethane and negating odor and toxicity as problems. The diaminobenzoate provides enhanced polyurethane physical properties.
本发明涉及一种生产聚
氨酯的方法,其中将三级胺功能并入二
氨基
苯甲酸酯的侧链中,形成催化聚
氨酯链延伸剂。这些链延伸剂是聚
氨酯催化剂,能够提供足够的固化效果,而不带有传统三级胺催化剂所带来的残留气味和安全隐患。当与
异氰酸酯反应时,链延伸剂的非三级胺部分与聚合物网络结合,从而防止催化剂物种从聚
氨酯中扩散,消除气味和毒性问题。二
氨基
苯甲酸酯提供了增强的聚
氨酯物理性能。