Patent ID: 6379799
Filing Date: 2002-04-30
Classification: C08G,Y10T

Abstract:
A low moisture-absorbing resin system comprising:(a) an epoxy resin having structural formula (I): wherein R is hydrogen or halogen and n is from 0 to 0.5; and(b) an ortho-alkylated aromatic diamine hardener, wherein said ortho-alkylated aromatic diamine hardener is of structural formula (II): wherein Y is a direct bond, sulfur, oxygen, methyl, substituted methyl, or sulfoxy, R1 and R2 are C1-C4 straight chain or branched alkyl groups, and X is hydrogen, chlorine or bromine, or,wherein said ortho-alkylated aromatic diamine hardener is of structural formula (III): wherein the â€”NH2 groups are in the meta- or para-position to each other, R3 is branched or straight chain alkyl, and R4 and R5 are each hydrogen, C1-C4 branched or straight chain alkyl or methylthio.