| 摘要 |
PURPOSE: To obtain an interlayer electric insulation coating film excellent in adhesion to copper plating which forms a circuit, in a multilayered printed board obtained by a build-up method. CONSTITUTION: Conjugated diene based polymer (e.g. copolymer of polybutadiene and acrylic acid) suspends a carboxyl group in a molecular chain. Rubber denatured epoxy acrylate resin is obtained by making conjugated diene based polymer, bisphenol A-type epoxy resin and acrylic acid. Acid pendant rubber denatured epoxy acrylate resin (A) has a structure by reacting hydroxyl group of rubber denatured epoxy acrylate resin with polybasic acid anhydride. The following are contained: the resin (A). diluent (B), photopolymerization initiator (C), and epoxy resin (D). |
