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:
Sep. 01, 2020

Filed:

Jan. 11, 2017
Applicants:

Tokyo Institute of Technology, Meguro-ku, JP;

Kaneka Corporation, Osaka-shi, JP;

Inventors:

Takeshi Kikutani, Meguro-ku, JP;

Wataru Takarada, Meguro-ku, JP;

Noriyuki Suzuki, Settsu, JP;

Sarah Siti, Settsu, JP;

Ryuji Fukuda, Settsu, JP;

Assignees:

TOKYO INSTITUTE OF TECHNOLOGY, Meguro-ku, JP;

KANEKA CORPORATION, Osaka-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 1/02 (2006.01); D01F 6/62 (2006.01); D04H 3/011 (2012.01); D01F 1/10 (2006.01); C08K 5/20 (2006.01); C08K 5/053 (2006.01); D01D 5/16 (2006.01); D01F 6/92 (2006.01); C08G 63/06 (2006.01); D01F 6/84 (2006.01); C08K 5/00 (2006.01);
U.S. Cl.
CPC ...
D01F 1/02 (2013.01); C08G 63/06 (2013.01); C08K 5/053 (2013.01); C08K 5/20 (2013.01); D01D 5/16 (2013.01); D01F 1/10 (2013.01); D01F 6/62 (2013.01); D01F 6/625 (2013.01); D01F 6/84 (2013.01); D01F 6/92 (2013.01); D04H 3/011 (2013.01); C08K 5/0083 (2013.01); D10B 2331/04 (2013.01); D10B 2401/12 (2013.01);
Abstract

An objective is to improve the spinnability and the productivity and increase the tensile strength of a polyester fiber containing polyhydroxyalkanoate. Disclosed is a biodegradable aliphatic polyester fiber containing a polyhydroxyalkanoate, a nucleating agent, and a lubricant, wherein the nucleating agent contains pentaerythritol, and the lubricant contains at least one of behenic amide, stearic acid amide, erucamide, oleic amide, and a combination thereof.


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