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    • 1. 发明授权
    • Thermosetting resin compositions with low shrinkage
    • 具有低收缩率的热固性树脂组合物
    • US5489655A
    • 1996-02-06
    • US067446
    • 1993-07-26
    • Tomoaki ShimodaKenichi Ishiwa
    • Tomoaki ShimodaKenichi Ishiwa
    • C08F283/02
    • C08F283/02
    • Thermosetting resin compositions with low shrinkage are provided, which when molded show low shrinkage rates, good dimensional stability (little cracking or warping), and excellent surface smoothness, mechanical strength, and dispersion stability.The thermosetting resin compositions with low shrinkage in accordance with the present invention comprise:(a) 100 wt. parts by weight thermosetting resins, and(b) 3 to 200 parts by weight polycarbonates containing constituent units derived from aromatic dihydroxy compounds.The polycarbonates preferably have at least 5% (of all the terminal groups) terminal hydroxyl groups derived from aromatic dihydroxy compounds. The polycarbonates also preferably have an intrinsic viscosity of 0.05 to 0.65 dL/g.
    • 提供具有低收缩率的热固性树脂组合物,其在模塑时显示低收缩率,良好的尺寸稳定性(小的开裂或翘曲),以及优异的表面光滑度,机械强度和分散稳定性。 根据本发明的具有低收缩率的热固性树脂组合物包含:(a)100wt。 热固性树脂重量份,(b)含有由芳族二羟基化合物衍生的构成单元的3〜200重量份聚碳酸酯。 聚碳酸酯优选具有至少5%(末端基团)衍生自芳族二羟基化合物的末端羟基。 聚碳酸酯的特性粘度也优选为0.05〜0.65dL / g。