Title:
含フッ素ポリマーの製造法
Document Type and Number:
Japanese Patent JP4714991
Kind Code:
B2
Abstract:
A process for preparing a fluorine-containing polymer through emulsion polymerization method which enhances productivity while maintaining excellent physical properties of the fluorine-containing polymer and comprises (a) a first polymerization step for emulsion-polymerizing a fluorine-containing monomer or a mixture of a fluorine-containing monomer and a non-fluorine-containing monomer in an aqueous medium in the presence of a radical polymerization initiator and an emulsifying agent, (b) a dilution step for diluting the obtained aqueous emulsion of polymer particles with water to reduce the number of emulsified polymer particles per unit amount of aqueous medium in the emulsion and a concentration of emulsifying agent, and (c) a second polymerization step for emulsion-polymerizing a fluorine-containing monomer and/or a non-fluorine-containing monomer in the obtained diluted emulsified solution.
Inventors:
Kitaichi Masaki
Hiroshi Aihara
Sadanari Irie
Kishine Mitsuru
Yutaka Ueda
Katsuhide Otani
Yuki Marutani
Hideya Saito
Tsukamoto Mitsuro
Hiroshi Aihara
Sadanari Irie
Kishine Mitsuru
Yutaka Ueda
Katsuhide Otani
Yuki Marutani
Hideya Saito
Tsukamoto Mitsuro
Application Number:
JP2000558141A
Publication Date:
July 06, 2011
Filing Date:
July 05, 1999
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C08F2/10; C08F14/18; C08F14/26; C08F14/28; C08F259/08
Domestic Patent References:
| JPS5657811A | 1981-05-20 | |||
| JPS5284271A | 1977-07-13 | |||
| JPS6323907A | 1988-02-01 |
Attorney, Agent or Firm:
Atomi International Patent Office