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:
Mar. 10, 2026
Filed:
Dec. 28, 2022
Applicants:
Kirin Holdings Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Takashi Sato, Tokyo, JP;
Satoshi Kato, Tokyo, JP;
Rie Shirahama, Tokyo, JP;
Takafumi Asakura, Tokyo, JP;
Masaki Nakaya, Tokyo, JP;
Yohei Yamaguchi, Tokyo, JP;
Assignees:
KIRIN HOLDINGS KABUSHIKI KAISHA, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/16 (2006.01); B29C 49/00 (2006.01); B29C 49/02 (2006.01); B29C 49/06 (2006.01); B29K 67/00 (2006.01); C08L 67/02 (2006.01);
U.S. Cl.
CPC ...
C08G 63/16 (2013.01); B29C 49/0005 (2013.01); B29C 49/06 (2013.01); C08L 67/02 (2013.01); B29C 2049/023 (2013.01); B29K 2067/003 (2013.01); C08L 2203/10 (2013.01);
Abstract
This polyethylene furanoate has an intrinsic viscosity of 0.95-1.50 dl/g. Said intrinsic viscosity is measured (the Huggins constant is defined as 0.32) at 30° C. by using an Ubbelohde viscometer, after dissolving 0.25 g of the polyethylene furanoate in 50 ml of a solvent mixture of phenol/1,1,2,2-tetrachloroethane=50/50 (weight ratio).