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:
Feb. 22, 2022
Filed:
Jun. 24, 2019
Applicant:
Kuraray Co., Ltd., Kurashiki, JP;
Inventors:
Assignee:
KURARAY CO., LTD., Kurashiki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D04H 1/55 (2012.01); D01F 6/92 (2006.01); D04H 1/732 (2012.01); D21H 13/24 (2006.01);
U.S. Cl.
CPC ...
D04H 1/55 (2013.01); D01F 6/92 (2013.01); D04H 1/732 (2013.01); D21H 13/24 (2013.01); D10B 2331/04 (2013.01);
Abstract
The problem to be solved by the present invention is to provide a polyester binder fiber having a low crystallization temperature and exhibiting improved adhesiveness and a fiber structure including the polyester binder fiber. The polyester binder fiber according to the present invention includes a polyester polymer and an amorphous polyether imide polymer in a proportion of 0.1 to 5.0 mass % (based on the mass of the polyester polymer), and the polyester binder fiber has a crystallization temperature measured by differential calorimetry in a range of 100° C. or higher and 250° C. or lower.