Patent ID: 6616984
Filing Date: 2003-09-09
Classification: C08G,H01L,H05K,Y10S

Abstract:
A process of forming vias in a polymer composition comprising the steps of:(a) applying a layer of a resin composition that comprises (i) a cyanate ester; (ii) a bismaleimide; (iii) a co-curing agent having the structure R1â€”Arâ€”R2 wherein Ar is at least one aryl moiety, R1 is at least one unsaturated aliphatic moiety, R2 is at least one glycidyl moiety; (iv) an epoxy resin; and (v) a radiation triggered free-radical initiator; (b) covering the layer of resin composition with a mask having windows through which radiation can be transmitted; (c) exposing part of the resin composition to radiation to at least partially cure the resin composition in exposed areas; (d) removing non-cured portions of the resin composition; and (e) completing the cure of the resin composition.