Patent ID: 8232476
Filing Date: 2012-07-31
Classification: H05K,Y10T

Abstract:
1. A flexible multilayer wiring board, comprising a flexible inner layer board obtained by forming an inner layer wiring on both sides of an insulating layer, an outer layer wiring situated on at least one side of the inner layer board, and at least one insulating adhesive sheet lying between the inner layer board and the outer layer wiring, wherein at least one of the insulating adhesive sheets consists of a polyamideimide obtained by reacting a diimidedicarboxylic acid mixture containing a diimidedicarboxylic acid represented by the following general formula (1a), a diimidedicarboxylic acid represented by the following general formula (1b) and a diimidedicarboxylic acid represented by the following general formula (1c), with an aromatic diisocyanate represented by the following chemical formula (2a), (2b), (2c), (2d) or (2e): Z X