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Title:
POLYTETRAFLUOROETHYLENE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/100834
Kind Code:
A1
Abstract:
Provided is a polytetrafluoroethylene production method by which polytetrafluoroethylene is obtained by polymerizing tetrafluoroethylene in an aqueous medium in the presence of a nucleating agent and a polymer (I) containing a polymer unit (I) derived from a monomer represented by general formula (I).　Formula (I): CX1X3=CX2R(-CZ1Z2-A0)m (In the formula: X1 and X3 are each independently F, Cl, H or CF3; X2 is H, F, an alkyl group or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group or a fluorine-containing alkyl group; and m is an integer of 1 or more.)

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Inventors:
FUJIMOTO YOHEI (JP)
ICHIKAWA KENJI (JP)
NANBA YOSHINORI (JP)
KATO TAKETO (JP)
YAMANAKA TAKU (JP)
Application Number:
PCT/JP2020/043293
Publication Date:
May 27, 2021
Filing Date:
November 19, 2020
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
C08F14/26; C08F2/38; C08F2/44; C08F259/08
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Other References:
KASAI, J. APPL. POLYMER SCI., vol. 57, 1995, pages 797
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See also references of EP 4063405A4
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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