Patent ID: 6339116
Filing Date: 2002-01-15
Classification: C08H,H05K

Abstract:
A method of preparing a cross-linked polymer composition for use in a printed circuit board composing the steps of:forming an admixture having not less than 50% by weight of a polymer selected from the group consisting of lignin, crop oils, wood resins, tannins, polysaccharide resins, and combinations thereof; an epoxy resin cross-linking agent selected from the group consisting of diglycidyl ether benzylamine, epoxy novolacs epoxy cresol novolacs; an initiator selected from the group consisting of benyldimethylamine tetamethylbutane diamine, 2-methyl imidazole, caffeine, guanine and folic acid; adding energy selected from the group consisting of heat and electroergetic radiation to cause cross linking.