Patent ID: 6555592
Filing Date: 2003-04-29
Classification: C08F,C08G,C08L,G03F,H05K

Abstract:
A photothermosetting composition comprising:(A) a base resin obtained from the reaction of the following components: (a) an epoxy resin composition containing at least two epoxy groups; (b) an unsaturated monobasic acid; (c) a saturated or unsaturated dibasic acid having the following structure: HOOCâ€”Râ€”COOH R: C1ËœC12, aliphatic or aromatic (d) saturated or unsaturated acid anhydride; in which, the molar ratio of (a) (b),and (c), is 1:0.90Ëœ0.95:0.025Ëœ0.050, the acid value of the obtained base resin is in the range of 40Ëœ49 mg KOH/g; (B) a photopolymerizable photomonomer or photooligomer; (C) a photoinitiator; (D) an epoxide compound containing at least two epoxy groups which is a solid, semi-solid or liquid at an ambient temperature, or is solid/semi-solid/liquid mixed for use at an ambient temperature and is able to soluble in organic solvent; (E) an organic solvent.