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:
Feb. 20, 2024
Filed:
Nov. 01, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Jong Gil Kim, Daejeon, KR;
Chang Hun Kim, Daejeon, KR;
Jeong Hun Cho, Daejeon, KR;
Hyun Min Kim, Daejeon, KR;
Joon Hee Cho, Daejeon, KR;
Hyo Yong Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 220/46 (2006.01); C01B 32/05 (2017.01); D01F 9/22 (2006.01);
U.S. Cl.
CPC ...
C08F 220/46 (2013.01); C01B 32/05 (2017.08); D01F 9/22 (2013.01); C08F 2800/10 (2013.01);
Abstract
Provided is a method of preparing an acrylonitrile-based copolymer for a carbon fiber, which comprises: preparing a reaction solution including a monomer mixture comprising a sulfonate-based monomer represented by Chemical Formula 1, a carboxylic acid-based monomer, and an acrylonitrile-based monomer and an organic solvent; and subjecting the reaction solution to polymerization, wherein the monomer mixture comprises the sulfonate-based monomer represented by Chemical Formula 1 at 0.55 to 1.6 mol %.