The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 1997
Filed:
Feb. 22, 1996
Applicant:
Inventors:
Keiko Miyazaki, Yokohama, JP;
Hiroshi Noguchi, Yokohama, JP;
Takayuku Ota, Tokyo-to, JP;
Atsushi Kasai, Yokohama, JP;
Hiroaki Yamaoka, Yokohama, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528283 ; 528271 ; 528272 ;
Abstract
Aliphatic polyester copolymers, which have molecular weights high enough for practical use and which are excellent in thermal stability, tensile strength and moldability, and which are biodegradable as well, are provided, which are produced by a process comprising effecting polycondensation of an aliphatic diol and an aliphatic dicarboxylic acid in the presence of an aliphatic monohydroxymonocarboxylic acid in a specific amount and of a catalyst comprising a germanium compound.