Patent ID: 6361923
Filing Date: 2002-03-26
Classification: B23K,B41M,H05K,Y10S

Abstract:
A laser ablatable resin consisting essentially of an epoxy resin, an effective amount to increase the rate of laser ablation of a cured film of the coating of at least one dye that has substantial energy absorption at least one wave length selected from the group 532 nm, 355 nm, 308 nm, 266 nm, 248 nm, and 10,600 nm thermal curing agent, and wherein said epoxy resin consists essentially ofbetween about 10% and about 80% by weight of a polyol resin which is a condensation product of epichlorohydrin and bisphenol A; about 0% to about 80% by weight of a multifunctional bisphenol A formaldehyde novalak resin; about 10% to about 50% by weight of a glycidyl ether of bisphenol A; and about 10% to about 35% of a liquid epoxy resin.