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    • 9. 发明申请
    • POLYLACTIC ACID COMPOSITION
    • 聚氨酯组合物
    • US20100120991A1
    • 2010-05-13
    • US12593257
    • 2008-03-31
    • Kiyotsuna ToyoharaRyuji NonokawaKohei EndoShin To
    • Kiyotsuna ToyoharaRyuji NonokawaKohei EndoShin To
    • C08G63/06
    • C08G63/08B29K2995/006C08L67/04C08L2666/18
    • It is an object of the present invention to provide a composition comprising polylactic acid and having improved injection moldability and an injection molded product thereof.The object of the present invention is attained by a specific polylactic acid composition which meets the following requirements (a) to (g) at the same time: (a) it must have a weight average molecular weight of 70,000 to 700,000; (b) the total content of Sn atom, Ti atom, Al atom and Ca atom must be 3 to 20 ppm; (c) it must contain a P atom in an amount of 3 to 3,000 ppm; (d) the (total number of gram-atoms of Sn, Ti, Al and Ca)/(number of gram-atoms of P) value must be 0.01 to 5; (e) the content of a compound having a molecular weight of 150 or less must be not more than 0.2 wt %; (f) the COOH terminal group concentration must be not more than 30 equivalents/ton; and (g) the melt viscosity (P) at a melting temperature of 230° C. must satisfy the following expression (1): 10 Pa·s
    • 本发明的目的是提供一种包含聚乳酸并具有改进的注射成型性的组合物及其注模产品。 本发明的目的是通过同时满足以下要求(a)至(g)的特定聚乳酸组合物实现的:(a)其重均分子量必须为70,000至700,000; (b)Sn原子,Ti原子,Al原子和Ca原子的总含量必须为3〜20ppm, (c)必须含有3〜3000ppm的P原子; (d)(Sn,Ti,Al和Ca的克原子数)/(P的克原子数)值必须为0.01〜5; (e)分子量为150以下的化合物的含量必须为0.2重量%以下。 (f)COOH端基浓度必须不超过30当量/吨; 和(g)熔融温度为230℃时的熔融粘度(P)必须满足下式(1):10Pa·s