Fluorine-containing polymers and preparation and use thereof
AssigneeMinnesota Mining and Manufacturing Company
InventorWerner M. Grootaert
Life of this patent
Estimating the term…
Abstract
Fluoroalkyl sulfinates were synthesized and used as a source of fluoroalkyl radicals in aqueous emulsion polymerization. The resulting polymers contained a high level of perfluoroalkyl end groups. When fluoroalkyl disulfinates were utilized, the fluoroalkyl moiety and was incorporated in the polymer backbone. These disulfinates act as monomers, yielding fluoropolymers with specific micro structural fragments, derived from the parent perfluoro disulfinate. Novel fluoropolymers can thus be prepared.
Claims7
A method for the preparation of fluorine-containing polymer comprising, polymerizing, under free-radical conditions, an aqueous emulsion or suspension of a polymerizable mixture comprising a fluoroaliphatic-radical containing sulfinate, and an oxidizing agent capable of oxidizing said sulfinate to a sulfonyl radical.
Dependencies are inferred from the claim text.