申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0300366A1
公开(公告)日:1989-01-25
The present invention relates 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 non-fugitive catalytic polyurethane chain extender. These non-fugitive chain extruders 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 a problem. The aromatic diamine provides enhanced polyurethane physical properties.
本发明涉及一种生产聚氨酯的方法,其中将三级胺官能团合并到芳香族二胺的侧链中,优选为二氨基苯酰胺,以形成非挥发性催化聚氨酯链延伸剂。这些非挥发性链延伸剂是聚氨酯催化剂,提供足够的固化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。当与异氰酸酯反应性基团反应时,链延伸剂的非三级胺部分被束缚到聚合物网络上。催化剂物种从聚氨酯中的扩散已被防止,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。