Title:
METHOD FOR PRODUCING VINYLPYRROLIDONE POLYMER
Document Type and Number:
Japanese Patent JP2002069115
Kind Code:
A
Abstract:
To provide a vinylpyrrolidone polymer which has no discoloration and odor and which has very few impurities.
A water soluble organic peroxide and sulfite are added to a vinylpyrrolidone aqueous solution and the vinylpyrrolidone is polymerized.
Inventors:
KITADA AKIRA
FUJISE KEIICHI
HAMAGUCHI ITSUKO
FUJISE KEIICHI
HAMAGUCHI ITSUKO
Application Number:
JP2000332582A
Publication Date:
March 08, 2002
Filing Date:
October 31, 2000
Export Citation:
Assignee:
DAI ICHI KOGYO SEIYAKU CO LTD
International Classes:
C08F2/10; C08F4/40; C08F16/10; C08F26/10; C08F226/10; (IPC1-7): C08F4/40; C08F2/10; C08F26/10
Domestic Patent References:
JPS6368609A | 1988-03-28 | |||
JPH06192993A | 1994-07-12 | |||
JPS5975911A | 1984-04-28 |
Attorney, Agent or Firm:
Sota Asahina (1 person outside)