Patent ID: 6384177
Filing Date: 2002-05-07
Classification: C08G

Abstract:
A process for producing a polyurethane and an isocyanate in the presence of a catalyst wherein the catalyst is an amine catalyst comprising a quaternary ammonium compound represented by general formula (1): where R1 to R6 are independently a linear or branched saturated hydrocarbon group of 1 to 4 carbon atoms; R7 and R8 are independently a linear or branched, saturated or unsaturated hydrocarbon group of 2 to 12 carbon atoms; n is a number of 0 to 3, provided that when n=0 any one of R1, R2 and R3, and R5 and/or R6 may be linked together to form a heterocycle, or when n=1, 2, or 3, R5 or R6 and R4 may be linked together to form a heterocycle; A is a carbonate group or an organic acid group; and X is number of 1 or 2.