Polymerization of fluoropolymers using alkyl phosphonate surfactants
AssigneeArkema Inc.
InventorsMehdi Durali, Lotfi Hedhli, Roice Wille
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Abstract
The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated alkyl phosphonate surfactants, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more alkyl phosphonic acids or salts thereof.
Claims12
A process for preparing a fluoropolymer in an aqueous reaction medium comprising:
- a) forming an aqueous emulsion comprising at least one radical initiator, at least one non-fluorinated alkyl phosphonic acid surfactant or salt thereof, and at least one fluoromonomer, and
- b) initiating polymerization of said fluoromonomer;
- wherein said aqueous emulsion consists of no fluorinated surfactant.
An aqueous fluoropolymer emulsion composition comprising:
- a) at least one radical initiator;
- b) at least one alkyl phosphonic acid surfactant, or salt thereof;
- and
- c) at least one fluoropolymer,
- wherein said aqueous emulsion consists of no fluorinated surfactant.
A fluoropolymer resin composition comprising a fluoropolymer and from 0.001 to 2.0 percent, based on the weight of the fluoropolymer, of at least one alkyl phosphonic acid, or salt thereof, and wherein said fluoropolymer resin consists of no fluorinated surfactant.
Dependencies are inferred from the claim text.