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:
Sep. 29, 2020
Filed:
Sep. 05, 2016
Sumitomo Chemical Company, Limited, Tokyo, JP;
Takayuki Sugiyama, Tsukuba, JP;
Toyonari Ito, Tokyo, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
ABSTRACT OF THE DISCLOSURE An aromatic polyester containing a repeating unit (A) having Formula (a) below; a repeating unit (B) derived from an aromatic dicarboxylic acid, such as terephalic acid; a repeating unit (C) derived from an aromatic amine optionally having a hydroxyl group; and a repeating unit (D) derived from an aromatic diol. The content of (A) is 10 mol % to <20 mol %, the content of (B) is 40 mol % to <45 mol %, the total content of (C) and (D) is 40 mol % to <45 mol %, and the content of (D) is >0 mol % and <15 mol % with respect to a total of (A) to (D). In the Formula (a), Aris a 1,4-phenylene group, a 2,6-naphthylene group, or a 4,4'-biphenylene group; and at least one hydrogen atom in AO may be each substituted with a halogen atom, an alkyl group, or an aryl group.—O—Ar—CO—  (a)