Fiber-reinforced unsaturated copolyester.

摘要

A fiber-reinforced unsaturated polyester resin composition comprising an unsaturated polyester (A) obtained from, as acid component, 40 to 100 mole % of an unsaturated dicarboxylic acid or anhydride thereof and at most 60 mole % of a saturated dicarboxylic acid or anhydride thereof and, as alcohol component, a polyhydric alcohol having a primary hydroxyl group, and having a hydroxyl value of 115 to 210 mgKOH/g and an acid value of not more than 5 mgKOH/g, a polyisocyanate compound (B) having a terminal group of formula <CHEM> and a viscosity, at 25 DEG C, of 0.01 to 2 Pas (10 to 2,000 cps) and being in the liquid state, a polymerizable vinyl monomer (C) and a fiber (D), said composition satisfying the following conditions (i), (ii) and (iii); (i) the proportion of (A) is 50 to 70% by weight of the total weight of (A) and (C), (ii) the molar ratio of the isocyanate group of (B) to the hydroxyl group of (A) is 0.75 to 1.2, and (iii) the proportion of (D) is 50 to 70% by weight of the total weight of (A), (B), (C) and (D). t