发明名称 |
Process for producing polylactic acid resin |
摘要 |
There is provided a polylactic acid resin composition, comprising 0.15 to 0.90 parts by weight of an organic nucleating agent (B) in addition to 100 parts by weight of a polylactic acid resin (A) comprised of a poly-L-lactic acid component and a poly-D-lactic acid component. The polylactic acid resin composition satisfies the following (i) to (v):
(i) amount of a linear oligomer of L-lactic acid and/or D-lactic acid is equal to or less than 0.3 parts by weight
(ii) rate of weight-average molecular weight retention is equal to or greater than 70% after the polylactic acid resin composition is retained in a closed state at 220°C for 30 minutes;
(iii) degree of stereocomplexation (Sc) exceeds 80%;
(vi) stereocomplex crystal melting heat quantity ”Hmsc is equal to or greater than 30 J/g; and
(v) cooling crystallization heat quantity (”Hc) is equal to or greater than 20 J/g. |
申请公布号 |
EP2752457(A1) |
申请公布日期 |
2014.07.09 |
申请号 |
EP20120827001 |
申请日期 |
2012.08.24 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
SUDO, KEN;TAKAHASHI, YOSHITAKE;KUMAZAWA, SADANORI |
分类号 |
C08L67/04;C08K5/521;C08K13/02;C08L101/16 |
主分类号 |
C08L67/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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