| (19) |
 |
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(11) |
EP 4 365 210 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
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published in accordance with Art. 153(4) EPC |
| (15) |
Correction information: |
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Corrected version no 1 (W1 A1) |
| (48) |
Corrigendum issued on: |
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03.07.2024 Bulletin 2024/27 |
| (43) |
Date of publication: |
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08.05.2024 Bulletin 2024/19 |
| (22) |
Date of filing: 01.07.2022 |
|
| (51) |
International Patent Classification (IPC):
|
| (86) |
International application number: |
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PCT/JP2022/026475 |
| (87) |
International publication number: |
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WO 2023/286640 (19.01.2023 Gazette 2023/03) |
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| (84) |
Designated Contracting States: |
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AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
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Designated Extension States: |
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BA ME |
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Designated Validation States: |
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KH MA MD TN |
| (30) |
Priority: |
13.07.2021 JP 2021115703
|
| (71) |
Applicant: DAIKIN INDUSTRIES, LTD. |
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Osaka-shi, Osaka 530-0001 (JP) |
|
| (72) |
Inventors: |
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- TAKAOKA, Hiroshi
Osaka-shi, Osaka 530-8323 (JP)
- MARUYA, Yoshiki
Osaka-shi, Osaka 530-8323 (JP)
- SUZUKI, Takaaki
Osaka-shi, Osaka 530-8323 (JP)
- NAKAO, Yuki
Osaka-shi, Osaka 530-8323 (JP)
|
| (74) |
Representative: Hoffmann Eitle |
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Patent- und Rechtsanwälte PartmbB
Arabellastraße 30
81925 München
81925 München (DE) |
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| (54) |
METHOD FOR PRODUCING FLUORINE-CONTAINING POLYMER |
(57) A method for producing a fluorine-containing polymer comprises: (a) treating, on
a metal inner surface of a polymerization tank, at least a region with which a reaction
mixture may come into contact during the following (b) with a treatment agent containing
phosphoric acid and/or a phosphate and a polar solvent to form an adhesion prevention
film on the region, and (b) polymerizing at least a fluorine-containing monomer in
a reaction mixture containing a fluorine-containing solvent and water by suspension
polymerization in the polymerization tank to obtain the fluorine-containing polymer.