Patent ID: 6482899
Filing Date: 2002-11-19
Classification: C08G

Abstract:
A latent curing agent for epoxy resin, comprising a reaction product obtainable by allowing (A) an epoxy compound having more than one epoxy groups on the average in the molecule, (B) a compound having in the molecule both a tertiary amino group and at least one functional group having an active hydrogen selected from the group consisting of OH group, SH group, NH group, NH2 group, COOH group and CONHNH2 group, and (C) a compound having in the molecule at least one functional group having an active hydrogen selected from the group consisting of NH2 group and CONHNH2 group or having in the molecule at least two functional groups selected from the group consisting of OH group, SH group, NH group, NH2 group, COOH group and CONHNH2 group, provided that a compound having an epoxy group or tertiary amino group in the molecule is excluded, to react on one another in the presence of 0.05 to 5.0 equivalents of water per 1 equivalent of the epoxy group of Compound (A);wherein when compound B) is a compound having in the molecule both a tertiary amino group and at least one functional group having an active hydrogen selected from the group consisting of OH group, SH group, COOH group and CONHNH2 group, 0.5-2.5 equivalents of the epoxy group of Compound (A) is used per 1 equivalent of the total active hydrogen in both compounds (B) and (C); or when compound (B) is a compound having in the molecule both a tertiary amino group and at least one functional group having an active hydrogen selected from the group consisting of NH group and NH2 group, 0.2-1.1 equivalents of Compound (A) is used per 1 equivalent of the active hydrogen in the functional group of both Compounds (B) and (C).