PRODUCTION OF POLYVINYLPYRRORIDONE - KAWAKEN FINE CHEMICALS CO

Title:

PRODUCTION OF POLYVINYLPYRRORIDONE

Document Type and Number:

Japanese Patent JP2000204118

Kind Code:

A

Abstract:

To provide a method for producing a polyvinylpyrroridone having a high molecular weight and a narrow molecular weight distribution, containing less impurity, and capable of being used for an electronic material, a cosmetic, etc., by using dimethyl-2, 2'-azobisisobutylate of which decomposition product is also safe, as a radical forming agent.

This method for producing a polyvinylpyrroridone from vinylpyrroridone monomer by a solution polymerization initiated with a radical by using dimethyl-2,2'-azobisisobutylate as a radical-forming compound in an aqueous medium, is provided by using a vinylpyrroridone monomer from which a basic impurity in the raw material vinylpyrroridone monomer is removed by an adsorbing agent.

Inventors:

IKEDA SATORU
KADO KAZUHIRO
SEKIDO HIROTAKA

Application Number:

JP332699A

Publication Date:

July 25, 2000

Filing Date:

January 08, 1999

Export Citation:

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Assignee:

KAWAKEN FINE CHEMICALS CO
TAKEFU FINE CHEMICAL KK

International Classes:

C08F2/10; C08F4/04; C08F26/06; C08F26/10; (IPC1-7): C08F26/10; C08F2/10; C08F4/04

Attorney, Agent or Firm:

Masayuki Kishida (2 outside)

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