| abstract |
PROBLEM TO BE SOLVED: To use an oligomer-containing high-molecular-weight aliphatic polyester copolymer, to be excellent in mechanical properties and biodegradability, to suppress powder blowing to the surface, to deteriorate haze and to reduce light transmittance. Provide a biodegradable resin film free of SOLUTION: The molecular chain is a repeating unit represented by the following general formulas (1) and (2): —CO—R 1 —CO— (1) (R 1 represents a divalent aliphatic group having 1 to 12 carbon atoms.) —OR 2 —O— (2) (R 2 represents a divalent aliphatic group having 2 to 12 carbon atoms.) And a repeating unit represented by (3) added as necessary: —CO—R 3 —O— (3) (R 3 represents a divalent aliphatic group having 1 to 10 carbon atoms.) An aliphatic polyester copolymer (a) having a weight average molecular weight of 40,000 or more and an oligomer having a molecular weight of 500 or less and having an oligomer content of 1,000 to 20,000 ppm and another biodegradable resin (b) A biodegradable resin film obtained by molding an aliphatic polyester-based biodegradable resin composition comprising: [Selection diagram] None |