Polyurethanes Made with Copper Catalysts

摘要

Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a copper catalyst that contains at least one copper atom associated with a polydentate ligand that contains at least one nitrogen-containing complexing site.

主权项

1. A process for preparing a polyisocyanate-based polymer, comprising forming a reaction mixture containing at least one polyisocyanate, at least one isocyanate-reactive compound having at least two isocyanate-reactive groups and at least one copper catalyst, and then curing the reaction mixture to form a polymer, wherein the copper catalyst contains at least one copper atom associated with a polydentate organic ligand that contains at least two complexing sites, of which at least one is nitrogen-containing, wherein the ligand is
a) a β-amino alcohol or enol; b) a β-imino alcohol or enol; c) a β-enamino alcohol; d) a β-amino keto or β-enamino keto or ester compound; e) a β-diketiminate compound; or f) a β-diamine compound.