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:
May. 12, 2026
Filed:
Jun. 15, 2023
SK Chemicals Co., Ltd., Seongnam-si, KR;
Ji-Hun Kim, Seongnam-si, KR;
Kwang-Woo Park, Seongnam-si, KR;
Seong-Ki Lee, Seongnam-si, KR;
Joong Ki Lee, Seongnam-si, KR;
Yuntae Jin, Seongnam-si, KR;
SK CHEMICALS CO., LTD., Seongnam-si, KR;
Abstract
A method for producing bis-2-hydroxyethyl terephthalate is disclosed. The method includes the steps of: (1) adding a waste polyester raw material into a co-extruder to obtain a co-extrudate; (2) adding the co-extrudate into a reactor with an agitation shaft and depolymerizing same to obtain a first reaction product; (3) adding the first reaction product into a first continuous stirred tank reactor and depolymerizing same to obtain a second reaction product; and (4) adding the second reaction product into a second continuous stirred tank reactor and depolymerizing same to obtain a third reaction product.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile