Title:
BIO-DEGRADABLE RESIN COMPOSITION
Document Type and Number:
Japanese Patent JPH0551483
Kind Code:
A
Abstract:
PURPOSE:To provide a bio-degradable resin composition containing a starch- based polymer, a saponified ethylene-vinyl acetate copolymer and a specific polyhydric alcohol as a plasticizer and giving a film having excellent transparency and flexibility. CONSTITUTION:The objective composition contains (A) a starch-based polymer (e.g. raw starch or physically modified starch), (B) a saponified ethylene-vinyl acetate copolymer having an ethylene content of 20-60mol% (preferably 25-50mol%), a saponification degree of the vinyl acetate unit of >=90mol% (preferably >=95mol%) and a melt flow index of 1-60g/10min (preferably 2-30g/10min) at a weight ratio (A:B) of 80:20 to 20:80 (preferably 70:30 to 30:70) and (C) 5-50 pts.wt., preferably 10-40 pts.wt. (based on 100 pts.wt. of A+B) of a polyhydric alcohol (preferably 1,6-hexanediol, etc.) containing 2-4 OH groups in the molecule and having a melting point of >=40 deg.C (preferably 40-150 deg.C) and a molecular weight of <=600 (preferably 100-300).
Inventors:
MORIWAKI YOSHIKAZU
YOSHIDA YUICHI
YOSHIDA YUICHI
Application Number:
JP24253591A
Publication Date:
March 02, 1993
Filing Date:
August 27, 1991
Export Citation:
Assignee:
NIPPON SYNTHETIC CHEM IND
International Classes:
C08K5/05; C08K5/053; C08L3/00; C08L3/02; C08L23/26; C08L29/04; C08L101/16; (IPC1-7): C08K5/05; C08L3/02; C08L23/26; C08L29/04
Next Patent: RUBBER COMPOSITION