Patent ID: 6841605
Filing Date: 2005-01-11
Classification: B32B,C08L,C09J,H05K,Y10T

Abstract:
1. An adhesive composition for a metal foil which comprises as main components a polyvinyl acetal resin, a polyfunctional acrylate compound or a polyfunctional methacrylate compound having two or more acryloyl groups or methacryloyl groups in the molecule and an epoxy resin, wherein said polyvinyl acetal resin comprises (a) an acetoacetal portion, (b) a butylacetal portion, (c) a vinyl alcohol portion, (d) a vinyl acetate ester portion and (e) an itaconic acid portion having a carboxyl group as a side chain in the weight ratio of and a number average degree of polymerization of 1,000 to 3,000.