PRODUCTION OF DICYCLOPENTADIENE-MODIFIED UNSATURATED POLYESTER RESIN, CURABLE RESIN COMPOSITION AND USE OF THE SAME COMPOSITION

摘要

PURPOSE:To obtain the subject resin useful for a fiber-reinforced laminated cured material with giving a surface smoothness to said laminated cured material by reacting dicyclopentadiene maleate, etc., with a dihydric alcohol, etc. CONSTITUTION:(A) Dicyclopentadiene maleate and/or dicyclopentadiene fumalate is reacted with (B) a dihydric alcohol or a mixture of a dihydric alcohol and an unsaturated dibasic acid (e.g. maleic acid), a saturated dibasic acid (e.g. isophthalic acid) or acid anhydrides of said acids to afford the aimed resin expressed by the formula (R1 is a residue removed hydroxyl group from dihydric alcohol; R2 is a residue removed carboxyl from unsaturated or saturated dibasic acid; n is 0-100). Besides, 20-100wt.% dihydric alcohol having bisphenol skeleton and/or hydrogenated bisphenol skeleton is contained in total 100wt.% dihydric alcohol as a dihydric alcohol. Furthermore, a curable resin composition is obtained from said resin and a radical-polymerizable monomer.