E.i. Dupont De Nemours and Company

The Chemours Company Fc, LLC

Stephen James Getty

Sheng Peng

Ying Wang

Peter Arnold Morken

Timothy Edward Hopkins

Xianjun Meng

Peter Michael Murphy

Phan Linh Tang

Alexander Borisovich Shtarov

Romain Severac

Dipti Dilip Khasnis

Axel Hans-Joachim Herzog

Adam Paul Smith

Vincent Franco

Alexander Anthony Marchione

Hollis Thomas Warren

Pelin Hacarlioglu

George Murray Volker

Benjamin Weaver Messmore

Steven Furyk

Michael Deemer

Andrii Matsnev

Cameron Parrish

Xiaolin Liu

Edward Patrick Carey

An improved process for producing perfluoroalkyl iodides of formula (I)F(CFCF)&#x2014;I&#x2003;&#x2003;(I)wherein n is an integer from 2 to 3, wherein the improvement comprises thermolyzing at least one perfluoroalkyl iodide of formula (II), optionally in the presence of perfluoroethyl iodide, formula (III)F(CFCF)&#x2014;I&#x2003;&#x2003;(II)F(CFCF)&#x2014;I&#x2003;&#x2003;(III)wherein m is an integer greater than or equal to 4, and p is 1, wherein a) the molar ratio of formula (III) to formula (II) is less than 1.0, b) the residence time is from about 0.1 to about 10 seconds, and c) the temperature is from about 450&#xb0; C. to about 500&#xb0; C.

Production of short chain perfluoroalkyl iodides from higher order telomers

A process to prepare fluorinated sulfobetaine compounds of formula (I)   

Process to produce fluorinated betaines

A polymer having at least one urea linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I):R(CHCF)(CHCH)(R)&#x2014;XH&#x2003;&#x2003;Formula (I)wherein 

Fluoropolymer compositions and treated substrates

A composition comprising a compound of formula (I) or (II): wherein

Fluoroalkyl phosphate compositions

A composition which provides surface effects to substrates comprising a polymer containing at least one urea linkage prepared by 

Polyfluoroether based polymers

Fluororpolymer compositions and treated substrates

A composition comprising one or more compounds of formula (I) or (II): wherein:

Polyfluoroether-based phosphates

Perfluoroether based polymers

A process for reducing the level of perfluoroalkanoic acids, perfluoroalkanoic esters, and perfluoroalkyliodides in fluorinated alcohols comprising heating a fluorinated alcohol, or mixtures thereof, containing said acids, esters, or iodides to a temperature of at least 175&#xb0; C. in the presence of water and a base additive is disclosed.

Purification of fluorinated alcohols

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Wilmington, DE, United States of America

Stephen James Getty