2003-335850 is referenced by 1 patents.

PROBLEM TO BE SOLVED: To provide a method of producing a biodegradable plastic by synthesizing polylactic acid directly from lactic acid, unlike current processes based on a route of synthesizing polylactic acid from lactic acid through lactide, and an apparatus for the method, which achieve a substantial reduction of the time for synthesis of polylactic acid and the production cost.SOLUTION: The method comprises dehydration polycondensation of the raw material lactic acid under high-temperature and reduced-pressure conditions in the presence of a metal catalyst to obtain polylactic acid serving as the main component of biodegradable plastics.

Method of manufacturing biodegradable plastic and apparatus for it
Application Number
Publication Number
Application Date
May 17, 2002
Publication Date
November 28, 2003
Matsumura Masatoshi
Yamada Junji
Kin Tohaku
Takamura Koji
Nomura Nakao
J Corporation
C08G 63/78