Emulsifier free aqueous emulsion polymerization to produce copolymers of a fluorinated olefin and hydrocarbon olefin
Assignee3M Innovative Properties Company
InventorsHarald Kaspar, Peter J. Scott, Klaus Hintzer, Gernot Löhr
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Abstract
Provided is a process for making a copolymer of fluorinated olefin and hydrocarbon olefin selected from ethylene, propylene and mixtures thereof, the process comprising a substantially emulsifier free aqueous emulsion polymerization of said fluorinated olefin and said hydrocarbon olefin, optionally in the presence of fluoropolymer particles and/or fluorinated liquid in a form suitable to improve the copolymerization of fluorinated olefin and hydrocarbon olefin.
Claims13
Process comprising polymerizing a fluorinated olefin and a hydrocarbon olefin selected from ethylene, propylene and mixtures thereof, to give a copolymer, wherein polymerizing is a substantially emulsifier free aqueous emulsion polymerization in the presence of fluoropolymer particles and/or in the presence of fluorinated liquid having a boiling point of at least 50° C., wherein said copolymer contains recurring units deriving from the hydrocarbon olefin in an amount of 10 to 70 mol % relative to the total amount of recurring units in the copolymer.
Dependencies are inferred from the claim text.