| 摘要 |
PURPOSE:To provide the titled composition containing an unsaturated polyester prepolymer and diallyl phthalate, curable in a short time, and effective to energy saving. CONSTITUTION:The objective composition is prepared by mixing (A) an unsaturated polyester prepolymer obtained by the polycondensation of generally an unsaturated polybasic acid, a saturated polybasic acid and a glycol, (B) a polymerizable monomer (e.g. styrene) containing preferably 15-90% of diallyl phthalate and (C) a polymerization initiator. The polymerization initiator (C) is preferably a mixture of plural polymerization initiators (e.g. benzoyl peroxide, dicumyl peroxide) having different half-life times from each other.
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