PHOTOPOLYMER COMPOSITION AND LAMINATING MATERIAL AND MULTILAYER PRINTED WIRING BOARD MADE BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a photopolymer composition adapted so that the peel strength between a photopolymerized product of the resin and the metal plating layer formed thereon may be improved by mixing a photopolymer composition containing a novolac epoxy (meth)acrylate with a rubber-modified epoxy (meth) acrylate. SOLUTION: This composition comprises a novolac epoxy (meth)acrytate resin and a rubber-modified epoxy (meth)acrylate. The peel strength between the surface of a photopolymerized product of the composition and the metal plating layer formed thereon can be markedly improved presumably because, when the photopolymerized product is surface-treated with an oxidizing agent, the double bonds contained in the rubber-modified segments of the rubber- modified epoxy (meth)acrylate are oxidized to allow part to be further decomposed and then eluted or to allow functional groups having a higher affinity for metals to be introduced into it.