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. 08, 2023
Filed:
Oct. 29, 2018
Hanwha Chemical Corporation, Seoul, KR;
Hye Yeon Lee, Seoul, KR;
Dae Hak Kim, Seongnam-si, KR;
Seung Hoe Do, Daejeon, KR;
Jin Seo Lee, Seongnam-si, KR;
Kyung Ho Kwon, Daegu, KR;
Kyoung Won Yim, Gwangju, KR;
Do Kyoung Kim, Busan, KR;
HANWHA CHEMICAL CORPORATION, Seoul, KR;
Abstract
The present invention relates to a method for producing a polyamide by coordinated anionic ring-opening polymerization and a polyamide produced thereby, wherein metal alkoxide as an initiator and metal hydride as a catalyst are added to enable polymerization having a narrow molecular weight distribution and uniform molecular weight within a short polymerization reaction time at a low temperature, without a separate vacuum process, as compared with an existing polymerization method.