Title:
METHOD FOR PRODUCTION OF VINYLPYRROLIDONE POLYMER
Document Type and Number:
Japanese Patent JP3338677
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a production method whereby a vinylpyrrolidone polymer having a desired mol.wt. and a narrow mol.wt. distribution can be produced at a high reproducibility.
SOLUTION: In this method, a vinylpyrrolidone polymer is produced by polymerizing a polymerizable monomer component containing N-vinylpyrrolidone by using a water-soluble initiator in an aqueous solution. The polymerization is conducted in the temperature range of from Tbpw-5(°C) to Tbpw (°C) (Tbpw is the boiling point of water at polymerization).
Inventors:
Akio Naka
Taisei Tomihisa
Toshiaki Kuriyama
Hideyuki Nishibayashi
Taisei Tomihisa
Toshiaki Kuriyama
Hideyuki Nishibayashi
Application Number:
JP30894099A
Publication Date:
October 28, 2002
Filing Date:
October 29, 1999
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C08F2/10; C08F26/10; (IPC1-7): C08F26/10; C08F2/10
Domestic Patent References:
| JP4711497A | ||||
| JP5092A |
Attorney, Agent or Firm:
Takehiko Matsumoto
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