3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Charles F Kolpin

John C Smeltzer

Gerald Lee Bauer

William V Childs

Dean Thomas Rutten

Richard M Minday

Stephen D Polson

Jeffrey C Spangler

Ludmila M Groubina

Anatoly A Krasilnikov

Eric N Wallace

Adda E Gandlina

Thomas M Barrett

Galina I Kaurova

Dean T Rutten

William Ves Childs

Described is a process for the electrochemical fluorination of a substrate, the process comprising the steps of: providing a substrate comprising at least one carbon-bonded hydrogen; preparing a reaction solution comprising the substrate and hydrogen fluoride; passing electric current through the reaction solution sufficient to cause replacement of one or more hydrogens of the substrate with fluorine, the electric current being interrupted through a current cycle defined by current levels comprising an elevated current and a reduced current; wherein the current varies in such a manner that the resistance of the cell operated with interrupted current is lower than the resistance of the cell operated with non-interrupted current.

Electrochemical fluorination using interrupted current

Carbon electrodes for use as an anode in electrochemical cells for the generation of fluorine by electrolysis of molten KF.multidot.2HF electrolyte. Also included is a process for the operation of an electrochemical fluorine cell in combination with a direct fluorination reactor.

Anodic electrode for electrochemical fluorine cell

A process for preparing fluorochemical compounds, e.g., perfluoroalkanes, perfluoroethers, and perfluoroalkyl tertiary amines, comprises

Process for preparing fluorochemicals

Carbon electrodes for use as an anode in electrochemical cells for the generation of fluorine by electrolysis of molten KF.2HF electrolyte. Also included is a process for the operation of an electrochemical fluorine cell in combination with a direct fluorination reactor.

Growing community of inventors

River Falls, WI, United States of America

Charles F Kolpin