INSULATING RESIN COMPOSITION AND LAMINATE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an insulating resin composition having excellent impact and heat resistances and suitable for insulating layers such as multilayered wiring substrates having high adhesiveness to a plating metal and capable of being selectively etched with a permanganate used in a plating step. SOLUTION: This insulating resin composition comprises a cross-linked elastic polymer in an amount of 3-10 pts.wt. based on 100 pts.wt. of a resin component (except the cross-linked elastic polymer and including a monomer) in a polymerizable resin composition containing the cross-linked elastic polymer and polymerizable with light or heat. The cross-linked elastic polymer has carboxy groups and is dispersed into an average secondary particle diameter within the range of 0.5-2 μm.