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:
Jun. 28, 2022
Filed:
Jan. 08, 2019
Sumitomo Chemical Company, Limited, Tokyo, JP;
Yusaku Kohinata, Tokyo, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
A liquid crystal polyester fibers containing a liquid crystal polyester, in which the liquid crystal polyester has repeating units represented by Formulae (1), (2) and (3), at least one of the repeating units contains 2,6-naphthylene, a content of the repeating unit containing the 2,6-naphthylene is 40 mol% or greater with respect to a total content of all the repeating units, and an orientation degree of the liquid crystal polyester in a length direction of the fiber is 89% to 95%:—O—Ar—CO—  (),—CO—Ar—CO—  (), and—X—Ar—Y—  (), wherein Arrepresents phenylene, naphthylene, or biphenylylene, Arand Areach independently represent phenylene, naphthylene, or biphenylylene, and at least one of Ar, Ar, and Arcontains 2,6-naphthylene, X and Y each independently represent oxygen or —NH—, Ar, Ar, or Armay be each independently substituted with halogen, alkyl, or aryl.