Patent ID: 6500912
Filing Date: 2002-12-31
Classification: C08L

Abstract:
A curable epoxy composition comprising:an epoxy resin having at least 1.5 epoxy groups per molecule; and a liquid amine-terminated polyamide, wherein the liquid amine-terminated polyamide is prepared by reacting(a) carboxylic acids selected from the group consisting of C18-C60 dicarboxylic acids, C18-C60 dicarboxylic acid derivatives and mixtures thereof, wherein said carboxylic acids optionally contain di- or polycarboxylic acids or acid derivatives having from 4 to 20 carbon atoms in an amount ranging from 0-10% based on all carboxylic acids; and (b) at least one amine having a formula: R1â€”NHâ€”R2â€”NHâ€”R3, wherein R1 having a total number of carbon atoms from 0 to about 20, is selected from the group consisting of H, alkyl, cycloalkyl, arylalkyl, hydroxyalkyl, alkoxyalkyl, cyanoalkyl, alkylthioalkyl, dialkylaminoalkyl, aryl, alkylaryl, cyanoaryl, alkoxyaryl, alkylthioaryl, and dialkylaminoaryl;R3 having a total number of carbon atoms from 1 to about 20, is selected from the group consisting of alkyl, cycloalkyl, arylalkyl, hydroxyalkyl, alkoxyalkyl, cyanoalkyl, alkylthioalkyl, dialkylaminoalkyl, aryl, alkylaryl, cyanoaryl, alkoxyaryl, alkylthioaryl, and dialkylaminoaryl; and R2 is (CR4R5)n, wherein n is from 2 to about 20, R4 is independently selected for each (CR4R5) from the group consisting of H, alkyl, aryl, hydroxyl, alkoxy, alkylthio, dialkylamino and cyano; and R5 is independently selected for each (CR4R5) from the group consisting of H, alkyl and aryl.