Patent ID: 6723819
Filing Date: 2004-04-20
Classification: C08G

Abstract:
A method for producing a polyurethane resin, which comprises reacting a polyol with a polyisocyanate in the presence of a catalyst selected from the group consisting of a catalyst (B) containing an amine compound of the following formula (2): a catalyst (C) containing an amine compound of the following formula (3): a catalyst (D) containing a compound of the following formula (5): wherein each of R3, R4 and R5 which are independent of one another, is a hydrogen atom or a C1-4 alkyl group, R6 is a hydrogen atom, a functional group of the following formula: wherein R7 is a hydrogen atom or a C1-4 alkyl group, and p is an integer of from 1 to 3, or a 3-aminopropyl group, and an amine compound of the following formula (6): wherein X is a nitrogen atom or an oxygen atom, each of R8 and R9 which are independent of each other, is a methyl group or a functional group of the following formula: wherein R10 is a hydrogen atom or a C1-4 alkyl group, and q is an integer of from 1 to 3, and each of m and n is an integer of from 1 to 2, provided that when X is a nitrogen atom, R8 and R9 are not simultaneously methyl groups, and that when X is an oxygen atom, R9 is a functional group or the following formula: wherein R10 is a hydrogen atom or a C1-4 alkyl group, andq is an integer of from 1 to 3; and a catalyst (E) containing an amine compound of the following formula (7): wherein each of R11, R12 and R13 which are independent of one another, is a hydrogen atom or a C1-4 straight chain or branched chain alkyl group, and R14 is a C1-4 straight chain or branched chain alkylene group.