Patent ID: 6384152
Filing Date: 2002-05-07
Classification: H01B

Abstract:
An insulating resin consisting of:(1) an epoxy system consisting of: (a) an epoxy resin component consisting of a blend of cycloaliphatic epoxy and an epoxy resin selected from the group consisting of bisphenol A epoxy, bisphenol F epoxy, epoxy novolac, and mixtures thereof, where the cycloaliphatic epoxy constitutes at least 50 wt. % of the blend, and (b) a diglycidylether of neopentyl glycol epoxy reactive diluent, where the epoxy reactive diluent constitutes from 30 wt. % to 70 wt. % of the epoxy system, (2) a phenolic accelerator selected from the group consisting of catechol, pyrogallol, and mixtures thereof, where the phenolic accelerator concentration is from 0.001 wt. % to 0.4 wt. % and (3) an organotin latent catalyst selected from the group consisting of triphenyltin chloride, tribenzyltin chloride, tribenzyltin hydroxide, triphenyltin acetate, and mixtures thereof, where the organotin latent catalyst concentration is from 0.01 wt. % to 0.1 wt. % based on the epoxy system, and where the insulating resin is solventless and has a viscosity of from 10 centipoise to 450 centipoise at 25Â° C.