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US 12,612,477 B2Granted
Method for producing fluoropolymer, polytetrafluoroethylene composition, and polytetrafluoroethylene powder
AssigneeDaikin Industries, Ltd.
InventorsHiroyuki Sato, Taketo Kato, Kenji Ichikawa, Yohei Fujimoto, Taku Yamanaka
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Abstract
Provided is a method for producing a fluoropolymer, including a polymerization step of polymerizing a fluoromonomer in an aqueous medium having a pH of 4.0 or more in the presence of a hydrocarbon surfactant and a polymerization initiator to obtain a fluoropolymer.
Claims9
A method for producing a fluoropolymer:
- comprising polymerizing a fluoromonomer in an aqueous medium in the presence of an anionic hydrocarbon surfactant and a polymerization initiator to obtain a fluoropolymer,
- wherein the anionic hydrocarbon surfactant comprises a salt of a carboxylic acid hydrocarbon surfactant,
- wherein the polymerization initiator is a redox initiator, and
- the polymerization of the fluoromonomer is carried out in an aqueous medium having a pH of 7.0 or higher.
1 more element
Dependencies are inferred from the claim text.