(Co)polymerization process in aqueous emulsion of fluorinated olefinic monomers
AssigneeAusimont S.p.A.
InventorsJulio A. Abusleme, Patrizia Maccone, Pasqua Colaianna
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Abstract
Radical (co)polymerization process of fluorinated olefinic monomers, optionally in association with one or more non-fluorinated olefins, in which the monomers are (co)polymerized in aqueous emulsion, in the presence of a hydrogenated chain transfer agent selected from hydrogen, aliphatic hydrocarbons and fluorohydrocarbons C.sub.1 -C.sub.20 and of a branched chain aliphatic alcohol C.sub.3 -C.sub.12 characterized by a ratio between the number of hydroxyl groups and the number of methyl groups lower than or equal to 0.5.
Claims10
A radical (co)polymerization process for (co)polymerizing one or more fluorinated olefinic monomers, optionally with one or more non-fluorinated olefins, said process comprising (co)polymerizing said monomers in aqueous emulsion in the presence of a chain transfer system, said chain transfer system consisting of:
- (a) a hydrogenated chain transfer agent selected from the group consisting of hydrogen, aliphatic hydrocarbons and fluorohydrocarbons having from 1 to 20 carbon atoms, and
- (b) an activator for the hydrogenated chain transfer agent, said activator being a branched chain aliphatic alcohol having from 3 to 14 carbon atoms and characterized by a ratio of hydroxyl groups to methyl groups that is lower than or equal to 0.5.
Dependencies are inferred from the claim text.