Patent ID: 6713154
Filing Date: 2004-03-30
Classification: B32B,H01B,H05K,Y10T

Abstract:
An interlayer insulating material for a high-density assembly board having interlayer-connecting via holes at most 200 &mgr;m in diameter, which interlayer insulating material is a cure resin composition comprising(A) a cycloolefin polymer containing a polar groups, wherein the polar groups are selected from the group consisting of a carboxyl group and a hydroxyl group and the rate of introduction of the polar groups in the cycloolefin polymer is within a range of 0.1-100 mol % based on the total number of units in the polymer, and at least 50 mol % of a repeating unit derived from a cycloolefin monomer, and (B) a hardener selected from the group consisting of an organic peroxide and a hardener capable of exhibiting its effect by heat.