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:
Mar. 07, 2000
Filed:
Jun. 08, 1998
Arakawa Chemical Industries, Ltd., Osaka-Fu, JP;
Abstract
A process for preparing polymers having quaternary ammonium groups comprising polymerizing a vinyl monomer component containing a vinyl monomer having a tertiary amino group in the presence of a specific solvent, while quaternizing the tertiary amino group with a quaternizing agent, to produce the vinyl polymers having quaternary ammonium groups in the form of particles dispersed in the solvent, which is possible to easily separate the produced polymers having quaternary ammonium groups from the solvent without requiring a heating step for removing the solvent, and which can produce quaternary ammonium group-containing copolymers having a high content of a hydrophobic vinyl monomer. The quaternary ammonium group-containing copolymers obtained by this process are useful as modifier for plastics, permanent antistatic agent, bactericide or fungicide, chemicals for paper making and water treating agent.