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. 23, 2026
Filed:
Apr. 26, 2023
Applicant:
SK Chemicals Co., Ltd., Gyeonggi-do, KR;
Inventors:
Assignee:
SK CHEMICALS CO., LTD., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 11/24 (2006.01); C07C 67/03 (2006.01); C07C 67/08 (2006.01); C07C 67/54 (2006.01); C07C 67/56 (2006.01); C08G 63/183 (2006.01); C08G 63/19 (2006.01); C08G 63/199 (2006.01); C08G 63/42 (2006.01); C08G 63/60 (2006.01); C08G 63/672 (2006.01); C08G 63/85 (2006.01); C08G 63/91 (2006.01);
U.S. Cl.
CPC ...
C08J 11/24 (2013.01); C07C 67/03 (2013.01); C07C 67/08 (2013.01); C07C 67/54 (2013.01); C07C 67/56 (2013.01); C08G 63/183 (2013.01); C08G 63/19 (2013.01); C08G 63/199 (2013.01); C08G 63/42 (2013.01); C08G 63/60 (2013.01); C08G 63/672 (2013.01); C08G 63/85 (2013.01); C08G 63/916 (2013.01); C08J 2367/00 (2013.01);
Abstract
A regenerated bis(2-hydroxyethyl) terephthalate obtained by the depolymerization of waste polyester is mixed with water to prepare an aqueous solution under specific temperature and concentration conditions, thereby ensuring storage stability. By introducing such a regenerated bis(2-hydroxyethyl) terephthalate aqueous solution into the polymerization of a polyester resin, the uniformity of raw materials and reaction efficiency can be increased, thereby improving the quality of the final polyester resin.
Hwang, Da-Young. (2026). Method for producing polyester resin by using regenerated bis(2-hydroxyethyl) terephthalate aqueous solution (U.S. Patent No. 12662585). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12662585
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile