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发明公开
CN101652428A 聚乳酸组合物 无效 - 撤回

聚乳酸组合物
摘要：
本发明的目的在于提供吹塑成型性得到改善的含有聚乳酸的组合物及吹塑成型体。本发明是同时满足下述要件(a)-(g)的聚乳酸组合物。(a)重均分子量为7万以上、70万以下；(b)Sn原子、Ti原子、Al原子和Ca原子的总含量(金属含量)为3ppm以上、20ppm以下；(c)P原子的含量为3ppm以上、3000ppm以下；(d)(Sn、Ti、Al和Ca的总克原子数)/(P的克原子数)为0.01以上、5以下；(e)分子量150以下的化合物的含量为0.2重量％以下；(f)COOH末端基团浓度为30当量/吨以下；(g)满足式(1)10Pa·s＜P＜100Pa·s和式(2)10MPa＜S，式中P为230℃下的熔融粘度，S为150℃下的应力。
摘要（英）：

Disclosed are: a composition comprising a polylactic acid, which is improved in the blow-moldability; and a blow-molded article produced from the composition. Specifically disclosed is a polylactic acid composition satisfying all of the following requirements (a) to (g): (a) the weight average molecular weight is 70,000 to 700,000 (inclusive); (b) the total content of an Sn atom, a Ti atom, an Alatom and a Ca atom is 3 to 20 ppm (inclusive) (in terms of the contents of metals); (c) the content of a P atom is 3 to 3000 ppm (inclusive); (d) the ratio of the total number of gram-atoms of Sn, Ti,Al and Ca to the number of gram-atoms of P is 0.01 to 5 (inclusive); (e) the content of a compound having a molecular weight of 150 or less is 0.2% by weight or less; (f) the concentration of a COOHterminal group is 30 equivalents/ton or less; and (g) the following formulae (1) and (2) are satisfied: 10 Pa s < P < 100 Pa s (1); and 10 MPa < S (2) wherein P represents a melt viscosity at 230 DEGC; and S represents a stress at 150 DEG C.

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