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US 6,869,997 B2Granted
Polymerization of fluoromonomers using a 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt as surfactant
AssigneeArkema Inc.
InventorsRoice Andrus Wille, Lotfi Hedhli, Mehdi Durali, Sayed Youssef Antoun
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Abstract
Fluoropolymers are prepared by a process comprising polymerizing at least one fluoromonomer in an aqueous reaction medium containing monomer, a radical initiator and a 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt as surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.
Claims39
A process for preparing a fluoropolymer in an aqueous reaction medium comprising:
- forming an aqueous emulsion comprising at least one radical initiator, at least one 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt, and at least one fluoromonomer, and
- initiating polymerization of said fluoromonomer.
Dependencies are inferred from the claim text.