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:
Oct. 01, 2019
Filed:
Jul. 16, 2014
Hyosung Chemical Corporation, Seoul, KR;
St Pharm Co., Ltd., Siheung-si, Gyeonggi-do, KR;
Jae Yoon Shim, Gunpo-si, KR;
Sun Kue Kim, Ansan-si, KR;
Hae Souk Cho, Anyang-si, KR;
Ji Hwan Choi, Incheon, KR;
Geun Jho Lim, Seoul, KR;
Sun Ki Chang, Gunpo-si, KR;
Min Kyu Kim, Ansan-si, KR;
In Hyeok Baek, Ansan-si, KR;
HYOSUNG CHEMICAL CORPORATION, Seoul, KR;
ST PHARM CO., LTD., Siheung-si, Gyeonggi-do, KR;
Abstract
Provided are a novel polyketone polymerization catalyst and a method of preparing a ligand, which can reduce production costs and can enable commercial mass synthesis by using ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) as a ligand constituting the polykeytone polymerization catalyst, the ligand having a simple structure and a small molecular weight while having high activity.