Title:
METHOD FOR PRODUCING FLUORINE-CONTAINING POLYMER
Document Type and Number:
WIPO Patent Application WO/2023/286640
Kind Code:
A1
Abstract:
Provided is a novel method by which the adhesion of a fluorine-containing polymer to a polymerization tank can be easily and effectively prevented. This method for producing a fluorine-containing polymer comprises: (a) using a treatment agent containing phosphoric acid and/or phosphate and a polar solvent to treat, from among the metal inner surface of a polymerization tank, at least a region that can come into contact with a reaction mixture during (b) below, and thereby form an adhesion-preventing film on said region; and (b) polymerizing, in the polymerization tank, at least a fluorine-containing monomer through suspension polymerization in a reaction mixture containing a fluorine-containing solvent and water to obtain a fluorine-containing polymer.
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Inventors:
TAKAOKA HIROSHI (JP)
MARUYA YOSHIKI (JP)
SUZUKI TAKAAKI (JP)
NAKAO YUKI (JP)
MARUYA YOSHIKI (JP)
SUZUKI TAKAAKI (JP)
NAKAO YUKI (JP)
Application Number:
PCT/JP2022/026475
Publication Date:
January 19, 2023
Filing Date:
July 01, 2022
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
C08F2/18; C08F14/18
Domestic Patent References:
| WO2009014138A1 | 2009-01-29 | |||
| WO2008047906A1 | 2008-04-24 | |||
| WO2009014138A1 | 2009-01-29 |
Foreign References:
| JPH04261403A | 1992-09-17 | |||
| JPS4811386A | 1973-02-13 | |||
| JPH06211933A | 1994-08-02 | |||
| JPH06340719A | 1994-12-13 | |||
| JP2021115703A | 2021-08-10 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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