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US 2007/0032591 A1Published application
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 alkyl phosphonic acid surfactant or salt thereof, and at least one fluoromonomer, and
- b) initiating polymerization of said fluoromonomer,
An aqueous fluoropolymer 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.
1 more element
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.
Dependencies are inferred from the claim text.