Patent ID: 6962964
Filing Date: 2005-11-08
Classification: C07C,C08G

Abstract:
1. In a polyepoxide resin comprising the reaction product of a polyglycidyl ether of a polyhydric alcohol having terminal 1,2 epoxy groups cured with a polyamine curative, the improvement which comprises said curative comprising a methylene bridged poly(cyclohexyl-aromatic)amine mixture herein designated Heavy MPCA, wherein the Heavy MPCA contains 3 ring and higher ring components, represented by the formulas: wherein R is hydrogen or methyl x is 1-13, y is 1-13, z is 1-13, the sum of x, y and z is from 3 to 15, p is 0-14, q is 0-14, the sum of p and q is from 1-14, r is 0-14, s is 0-14, the sum of r and s is from 1-14, u is 0-14, v is 0-14, the sum of u and v is 1-14, and the total number of rings is between 3 and 15 and at least 15-40% of said Heavy MPCA is non-elutable as determined by gas chromatography at a 300° C. injector temperature and said Heavy MPCA comprising at least a portion of said polyamine curative.