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.

Date of Patent:
Aug. 23, 2011

Filed:

Jun. 28, 2007
Applicants:

Yoshinori Suzuki, Iwaki, JP;

Kazuyuki Yamane, Iwaki, JP;

Hiroyuki Sato, Tokyo, JP;

Takahiro Watanabe, Iwaki, JP;

Inventors:

Yoshinori Suzuki, Iwaki, JP;

Kazuyuki Yamane, Iwaki, JP;

Hiroyuki Sato, Tokyo, JP;

Takahiro Watanabe, Iwaki, JP;

Assignee:

Kureha Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/52 (2006.01); C08K 5/5357 (2006.01); C08L 67/04 (2006.01); C08G 63/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

Polyglycolic acid and polylactic acid having a weight-average molecular weight of at most 50,000 are melt-kneaded in the presence of a thermal stabilizer to obtain a polyglycolic acid-based aliphatic polyester composition. The aliphatic polyester composition alleviates the too fast crystallizability of polyglycolic acid which has been problematic in forming or molding of polyglycolic acid alone or in combination with another thermoplastic resin, thus showing a crystallization speed which has been lowered and can be controlled in a wide range.


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