Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
精製ポリテトラフルオロエチレン粉末の製造方法及び低分子量ポリテトラフルオロエチレン粉末
Document Type and Number:
Japanese Patent JP7385150
Kind Code:
B2
Abstract:
The purpose of the present disclosure is to provide a method for producing, from low-molecular-weight polytetrafluoroethylene, refined polytetrafluoroethylene powder in which short-chain fluorine compounds are reduced. The present disclosure is a method for producing refined polytetrafluoroethylene powder from low-molecular-weight polytetrafluoroethylene powder obtained through radical polymerization, the method including a step for reducing short-chain fluorine compounds, where at least compounds represented by general formula (1) are reduced to 179 ppb or less and compounds represented by general formula (2) are reduced to 6900 ppb or less in the abovementioned step. General formula (1): (H-(CF2)m-COO)pM1 (in the formula, m is 3-20, and M1 is H, a metal atom, NR5 4 (where R5 may be the same or different and are H or a C1-10 organic group), imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent. p is 1 or 2.) General formula (2): (H-(CF2)n-SO3)qM2 (in the formula, n is 4-21. M2 is H, a metal atom, NR5 4 (where R5 are the same as above), imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent. q is 1 or 2.)

More Like This:
JP2507119INDUSTRIAL APPLICABILITY: A heat exchanger coated with a water-repellent coating composition and a water-repellent coating composition.
JP2013227593METHOD FOR PRODUCING AQUEOUS FLUOROPOLYMER DISPERSION AND AQUEOUS FLUOROPOLYMER DISPERSION
JPS5988127[Title of the device] Tile
Inventors:
Chisei Iguchi
Masao Kubonai
Eiji Masuda
Masayuki Tsuji
Jiro Hiromoto
Application Number:
JP2022068411A
Publication Date:
November 22, 2023
Filing Date:
April 18, 2022
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Daikin Industries, Ltd.
International Classes:
C08F14/26
Domestic Patent References:
JP2010180364A
Foreign References:
WO2020213691A1
WO2021053531A1
WO2019031617A1
Attorney, Agent or Firm:
Patent Attorney Firm WisePlus



 
Previous Patent: Air conditioning related equipment and air conditioning systems

Next Patent: Mapping method, EFEM