Title:
BIODEGRADABLE PLASTIC COMPOSITION
Document Type and Number:
Japanese Patent JPH03290461
Kind Code:
A
Abstract:
PURPOSE:To obtain a biodegradable plastic composition having utility as a plastic molding material, providing molded articles having biodegradation properties and toughness, by blending a polyglycollide with a specific polymer substance in a molten state. CONSTITUTION:A biodegradable plastic composition comprising a molten mixture consisting of (A) 5-60wt.% polyglycollide which is prepared by reacting carbon monoxide with carbon monoxide preferably in the presence of an acidic catalyst, depolymerizing the prepared polyglycollide with water or a lower alcohol to give glycolic acid (ester), heating and polymerizing the glycolic acid and has >=500, preferably 800-10,000 number-average molecular weight and (B) 95-40wt.% one or more polymer substances selected from poly(3- hydroxybutyric acid), a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid, polycaprolactone and polyglutamic acid.
Inventors:
MASUDA TAKASHI
MATSUDA AKIO
MURATA KAZUHISA
YAMAZAKI SHINSUKE
MATSUDA AKIO
MURATA KAZUHISA
YAMAZAKI SHINSUKE
Application Number:
JP9281690A
Publication Date:
December 20, 1991
Filing Date:
April 06, 1990
Export Citation:
Assignee:
AGENCY IND SCIENCE TECHN
International Classes:
C08L67/04; C08L67/00; C08L77/00; C08L101/16; (IPC1-7): C08L67/04; C08L77/00
Attorney, Agent or Firm:
Director, Institute of Materials Technology, Institute of Industrial Technology
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