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Summary:PROBLEM TO BE SOLVED: To provide an insulating film and a solder resist film composed of the photosensitive resin material superior in heat resistance and heat shock resistance in soldering, and enhanced in usefulness as the insulating film forming material of a printed circuit board. SOLUTION: This photosensitive composition is obtained by allowing the reaction product of a dicyclopentadiene type epoxy compound represented by the formula to react with a saturated or unsaturated polybasic acid anhydride and further incorporating an epoxy resin and a photopolymerization initiator and a thermosetting accelerator and an ethylenically unsaturated compound. A metallic, plastic and ceramic product are provided with films composed of the photosensitive resin.
Bibliography:Application Number: JP19970082839