| 摘要 |
PROBLEM TO BE SOLVED: To provide a photosensitive resin composition having excellent photosensitivity so that its hardened material is excellent in bending property, adhesion property, pencil hardness, solvent resistance, acid resistance, heat resistance, resistance against gold plating or the like. SOLUTION: A polyester compound (E) soluble with an alkali aqueous solution is obtained by the reaction of the following compound (A), compound (B) and compound (D) and as an optional component, compound (C). The photosensitive resin composition using the compound (E), and its hardened material are provided. The compound (A) is an epoxy carboxylate compound obtained by the reaction of an epoxy compound (a) having two epoxy groups in the molecule and a monocarboxylic acid compound (b) having an ethylenic unsaturated group in the molecule. The compound (B) is a butadiene-acrylonitrile copolymer having a hydroxy group at the molecular end. The compound (C) is a diol component except the compound (A) and compound (B). The compound (D) is a polybasic acid anhydride. |
