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1. WO2023277138 - METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE PARTICLES

Publication Number WO/2023/277138
Publication Date 05.01.2023
International Application No. PCT/JP2022/026258
International Filing Date 30.06.2022
IPC
C08J 3/12 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3Processes of treating or compounding macromolecular substances
12Powdering or granulating
C08F 6/00 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6Post-polymerisation treatments
C08F 14/26 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
14Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
18Monomers containing fluorine
26Tetrafluoroethene
Applicants
  • ダイキン工業株式会社 DAIKIN INDUSTRIES, LTD. [JP]/[JP]
Inventors
  • 田中 孝之 TANAKA, Takayuki
  • 宮本 政佳 MIYAMOTO, Masayoshi
  • 南山 智貴 MINAMIYAMA, Tomoki
  • 楠 岳樹 KUSUNOKI, Takeki
  • 平良 隆博 TAIRA, Takahiro
  • 山部 拓也 YAMABE, Takuya
  • 吉田 裕俊 YOSHIDA, Hirotoshi
  • 加藤 丈人 KATO, Taketo
  • 山中 拓 YAMANAKA, Taku
  • 塚本 充郎 TSUKAMOTO, Mitsuo
Agents
  • 弁理士法人とこしえ特許事務所 TOKOSHIE PATENT FIRM
Priority Data
2021-10911530.06.2021JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE PARTICLES
(FR) PROCÉDÉ DE PRODUCTION DE PARTICULES DE POLYTÉTRAFLUOROÉTHYLÈNE
(JA) ポリテトラフルオロエチレン粒子の製造方法
Abstract
(EN) 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.
(FR) L'invention concerne un procédé de production de particules de polytétrafluoroéthylène qui consiste à produire des particules de polytétrafluoroéthylène par préparation de particules polymérisées en suspension de polytétrafluoroéthylène par polymérisation en suspension de tétrafluoroéthylène dans un milieu aqueux, à préparer des particules broyées par nettoyage des particules polymérisées en suspension, puis, à broyer celles-ci, ou à nettoyer les particules polymérisées en suspension tout en les écrasant, à préparer les particules broyées ayant une teneur en eau inférieure ou égale à 40 % en masse par déshydratation des particules broyées et à traiter thermiquement les particules broyées déshydratées.
(JA) テトラフルオロエチレンを水性媒体中で懸濁重合することにより、ポリテトラフルオロエチレンの懸濁重合粒子を作製し、前記懸濁重合粒子を洗浄した後に粉砕することにより、または、前記懸濁重合粒子を洗浄しながら粉砕することにより、粉砕粒子を作製し、前記粉砕粒子を脱水することにより、含水率が40質量%以下の粉砕粒子を作製し、脱水した前記粉砕粒子に対して熱処理をすることにより、ポリテトラフルオロエチレン粒子を製造するポリテトラフルオロエチレン粒子の製造方法を提供する。
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