The poly lactic acid type constituent which features that the poly lactic acid type constituent, the moldings, the film,

摘要

PROBLEM TO BE SOLVED: To provide a biodegradable lactic acid polymer composition which exerts a previously unattained flexibility, especially retains flexibility under low temperature conditions, while maintaining the transparency of polylactic acid. ;SOLUTION: This polylactic acid composition contains a polylactic acid wherein the optical purity of the constitutive lactic acid is not larger than 50% and a polylactic acid wherein the optical purity of the constitutive lactic acid is 50% or larger in a weight ratio within the range of from 90/10 to 10/90 and contains, against 100 pts.wt. total weight of these polylactic acids, 25 pts.wt. or more plasticizer.;COPYRIGHT: (C)1999,JPO