The present invention relates to a process for the production of polyurethanes wherein a tertiary amine functionality is incorporated into the side chain of an aromatic diamine, preferably a diaminobenzamide, to form a catalytic polyurethane chain extender. These chain extenders are polyurethane catalysts that 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. Diffusion of the catalyst species from the polyurethane has been prevented, thus negating odor and toxicity as problems. The aromatic diamine provides enhanced polyurethane physical properties.
本发明涉及一种生产聚
氨酯的工艺,其中将三级胺功能并入芳香族二胺的侧链中,优选为二
氨基苯甲酰胺,以形成催化聚
氨酯链延长剂。这些链延长剂是聚
氨酯催化剂,能够提供足够的固化效果,而不会产生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,链延长剂的非三级胺部分与聚合物网络结合。催化剂物种从聚
氨酯中扩散已被防止,从而消除了气味和毒性问题。芳香族二胺提供了增强的聚
氨酯物理性能。