Patent ID: 7556850
Filing Date: 2009-07-07
Classification: C08L,C09J,H05K,Y10T

Abstract:
1. A wiring circuit board at least comprising an electric insulator layer and an electric conductor formed on the electric insulator layer so as to form a predetermined circuit pattern, which further comprises an adhesive layer formed by thermal hardening of the following thermosetting adhesive and pressure-sensitive adhesive composition: the thermosetting adhesive and pressure-sensitive adhesive composition being a thermosetting adhesive and pressure-sensitive adhesive composition which comprises 100 parts by weight of an acrylic polymer (X) containing, as monomer components, a (meth)acrylic acid alkyl ester (a) where the alkyl group has 2 to 14 carbon atoms in an amount of 60 to 75% by weight relative to the total amount of monomer components, a cyano group-containing monomer (b) in an amount of 20 to 35% by weight relative to the total amount of monomer components, and a carboxyl group-containing monomer (c) in an amount of 0.5 to 10% by weight relative to the total amount of monomer components and 1 to 20 parts by weight of a carbolic acid-based resorcinol-type phenol resin (Y) represented by the following formula (1): wherein R