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:
Nov. 14, 2023
Filed:
Oct. 29, 2018
Applicant:
Hanwha Chemical Corporation, Seoul, KR;
Inventors:
Hye Yeon Lee, Seoul, KR;
Do Kyoung Kim, Busan, KR;
Seung Hoe Do, Daejeon, KR;
Jin Seo Lee, Seongnam-si, KR;
Kyung Ho Kwon, Daegu, KR;
Dae Hak Kim, Seongnam-si, KR;
Kyoung Won Yim, Gwangju, KR;
Assignee:
HANWHA CHEMICAL CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 69/18 (2006.01); C08G 69/14 (2006.01);
U.S. Cl.
CPC ...
C08G 69/18 (2013.01); C08G 69/14 (2013.01); C08J 2377/02 (2013.01);
Abstract
The present invention provides a method for producing a polyamide with controlled activator addition, and a polyamide produced thereby, the method allowing a polymerization conversion rate and a polydispersity index (PDI) to be enhanced by controlling the addition of an activator so as to prevent a gelation phenomenon that occurs during anionic polymerization.