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. 28, 2023
Filed:
Dec. 16, 2019
Applicant:
Maruzen Petrochemical Co., Ltd., Chuo-ku, JP;
Inventors:
Tadashi Yamazaki, Ichihara, JP;
Masahiro Endo, Ichihara, JP;
Assignee:
MARUZEN PETROCHEMICAL CO., LTD., Chuo-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 230/02 (2006.01); C08F 4/04 (2006.01); C08F 30/02 (2006.01);
U.S. Cl.
CPC ...
C08F 230/02 (2013.01); C08F 4/04 (2013.01);
Abstract
A method for producing a polyvinylphosphonic acid copolymer may control a rise in internal temperature in the reaction system during polymerization and may allow synthesis of a copolymer as a polymer solution. A method for producing a polyvinylphosphonic acid copolymer may include polymerizing a compound of formula (1) and a compound of formula (2) in presence of a radical polymerization initiator and in a water-containing solvent: