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:
Aug. 03, 2021
Filed:
Aug. 01, 2018
Toray Industries, Inc., Tokyo, JP;
Yoshinori Kakizawa, Otsu, JP;
Koji Kadowaki, Otsu, JP;
Kazuhiro Tanahashi, Otsu, JP;
Hirokazu Sakaguchi, Otsu, JP;
Kazuyuki Kidoba, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A polyester copolymer has two types of ester bond-forming monomer residues as main structural units when the two types of ester bond-forming monomers are defined as 'monomer A' and 'monomer B', respectively, the polyester copolymer satisfies (1) and (2): (1) an R value represented by equation:value=[]/(2[][])×100[A]: mole fraction of monomer A residues in the polyester copolymer [% by mol], [B]: mole fraction of monomer B residues in the polyester copolymer [% by mol], and [AB]: mole fraction of a structure in which the monomer A residues and the monomer B residues are adjacent to each other (A-B and B-A) in the polyester copolymer [% by mol], is 0.45 or more and 0.99 or less; and (2) a crystallization rate of at least one of the monomer A residues and the monomer B residues is less than 14%.