US Patent 7973127 Method for producing polytetrafluoroethylene fine powder
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Patent abstract
The present invention provides a method for producing a polytetrafluoroethylene fine powder, which comprises emulsion polymerizing tetrafluoroethylene in the presence of an aqueous medium, a fluorinated surfactant and a radical polymerization initiator to produce an aqueous polytetrafluoroethylene emulsion, mixing and coagulating the aqueous emulsion to separate a polytetrafluoroethylene fine powder, and then drying the polytetrafluoroethylene fine powder in a wet state in an atmosphere containing ammonia.
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Patent Inventor Names
Shigeki Kobayashi0
Shinya Higuchi0
Yasuhiko Matsuoka0
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US Patent 07973127 Method for producing polytetrafluoroethylene fine powder US Patent 7973127 Method for producing polytetrafluoroethylene fine powder
Infobox
Patent Number
079731270
Patent Number
79731270
Edits on 26 Mar, 2023
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Infobox
Is a
Patent Jurisdiction
Patent Number
079731270
Date of Patent
July 5, 2011
0Patent Application Number
128918670
Date Filed
September 28, 2010
0Patent Primary Examiner
Edits on 8 Dec, 2021
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Infobox (+7 properties)
US Patent 07973127 Method for producing polytetrafluoroethylene fine powder
Infobox
Is a
Patent jurisdiction
Patent number
07973127
Date of patent
July 5, 2011
Patent application number
12891867
Date Filed
September 28, 2010
Patent primary examiner
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