| 摘要 |
PROBLEM TO BE SOLVED: To provide a molding material which has the glass transition temperature higher than that of a homopolymer of lactic acid, and excellent heat resistance, and by which the molding cycle can be shortened. SOLUTION: The copolymer of the lactic acid is obtained by copolymerizing (A) a constituent unit composed of the lactic acid with (B) an aromatic polyester constituent unit composed of at least one component selected from (b1) an aromatic carboxylic acid component, (b2) an aromatic alcohol component and (b3) an aromatic hydroxycarboxylic acid component, regulated so that the molar ratio (A)/(B) may be (20/80) to (95/5). COPYRIGHT: (C)2006,JPO&NCIPI
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