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Title:
METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE PARTICLES
Document Type and Number:
WIPO Patent Application WO/2023/277138
Kind Code:
A1
Abstract:
Provided is a method for producing polytetrafluoroethylene particles which involves producing polytetrafluoroethylene particles by preparing suspension-polymerized particles of polytetrafluoroethylene by suspension-polymerizing tetrafluoroethylene in an aqueous medium, preparing crushed particles by cleaning the suspension-polymerized particles, and thereafter, crushing the same, or cleaning the suspension-polymerized particles while crushing the same, preparing crushed particles having a water content of 40 mass% or less by dehydrating the crushed particles, and heat-treating the dehydrated crushed particles.

Inventors:
TANAKA TAKAYUKI (JP)
MIYAMOTO MASAYOSHI (JP)
MINAMIYAMA TOMOKI (JP)
KUSUNOKI TAKEKI (JP)
TAIRA TAKAHIRO (JP)
YAMABE TAKUYA (JP)
YOSHIDA HIROTOSHI (JP)
KATO TAKETO (JP)
YAMANAKA TAKU (JP)
TSUKAMOTO MITSUO (JP)
Application Number:
PCT/JP2022/026258
Publication Date:
January 05, 2023
Filing Date:
June 30, 2022
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
C08J3/12; C08F6/00; C08F14/26
Domestic Patent References:
WO2019156071A12019-08-15
WO1996028498A11996-09-19
WO2013005743A12013-01-10
WO2014123075A12014-08-14
WO2005042593A12005-05-12
WO2008060461A12008-05-22
WO2007046377A12007-04-26
WO2007046482A12007-04-26
WO2007046345A12007-04-26
WO2013189824A12013-12-27
WO2013189826A12013-12-27
WO2019161153A12019-08-22
WO2003035724A12003-05-01
Foreign References:
JPS63159438A1988-07-02
JP2019527644A2019-10-03
US3085083A1963-04-09
US20070015864A12007-01-18
US20070015865A12007-01-18
US20070015866A12007-01-18
US20070276103A12007-11-29
US20070117914A12007-05-24
US20070142541A12007-06-21
US20080015319A12008-01-17
US3250808A1966-05-10
US3271341A1966-09-06
JP2003119204A2003-04-23
JP2007119526A2007-05-17
US20140228531A12014-08-14
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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