The Chemours Company Fc, LLC

Great Lakes Chemical Corporation

E.i. Dupont De Nemours and Company

Chemtura Corporation

Pcbu Services, Inc.

E.i. Du Pont De Nmeours and Company

Stephan M Brandstadter

Vicki Hedrick

John Chien

Andrew Jackson

Mitchel Cohn

Janet K Boggs

Mario Joseph Nappa

Yuichi Iikubo

E Bradley Edwards

Stephen Owens

Janet Boggs

Julie Sacarias

Patricia Cheung

Ivan Sergeyevich Baldychev

Vimal Sharma

John Qian

Robert J Kaufman

Edward Norman

Sheng Peng

Gregory Leman

Bruno Ameduri

Thomas F Rowland

Donald J Toton

Mark Robin

George K Kostov

Ivan Sergeyvich Baldychev

Disclosed is a process for the preparation of cis-1,1,1,4,4,4-hexafluoro-2-butene comprising contacting 1,1,1-trifluorotrichloroethane with hydrogen in the presence of a catalyst comprising ruthenium to produce a product mixture comprising 1316mxx, recovering said 1316mxx as a mixture of Z- and E-isomers, contacting said 1316mxx with hydrogen, in the presence of a catalyst selected from the group consisting of copper on carbon, nickel on carbon, copper and nickel on carbon and copper and palladium on carbon, to produce a second product mixture, comprising E- or Z&#x2014;CFC-1326mxz, and subjecting said second product mixture to a separation step to provide E- or Z-1326mxz. The E- or Z-1326mxz can be dehydrochlorinated in an aqueous basic solution with an alkali metal hydroxide in the presence of a phase transfer catalyst to produce hexafluoro-2-butyne, which can then be selectively hydrogenated to produce Z-1,1,1,4,4,4-hexafluoro-2-butene using either Lindlar's catalyst, or a palladium catalyst further comprising a lanthanide element or silver.

Integrated process for the production of Z-1,1,1,4,4,4-hexafluoro-2-butene

Disclosed herein are methods of producing E-CFCH&#x2550;CHCFin a liquid phase. Also disclosed are methods of preparing CFCHCHClCFand CFCHClCHCCl.

Liquid phase process for preparing (E)-1,1,1,4,4,4-hexafluorobut-2-ene

Disclosed is a process for the preparation of cis-1,1,1,4,4,4-hexafluoro-2-butene comprising contacting 1,1,1-trifluorotrichloroethane with hydrogen in the presence of a catalyst comprising ruthenium to produce a product mixture comprising 1316mxx, recovering said 1316mxx as a mixture of Z- and E-isomers, contacting said 1316mxx with hydrogen, in the presence of a catalyst selected from the group consisting of copper on carbon, nickel on carbon, copper and nickel on carbon and copper and palladium on carbon, to produce a second product mixture, comprising E- or Z-CFC-1326mxz, and subjecting said second product mixture to a separation step to provide E- or Z-1326mxz. The E- or Z-1326mxz can be dehydrochlorinated in an aqueous basic solution with an alkali metal hydroxide in the presence of a phase transfer catalyst to produce hexafluoro-2-butyne, which can then be selectively hydrogenated to produce Z-1,1,1,4,4,4-hexafluoro-2-butene using either Lindlar's catalyst, or a palladium catalyst further comprising a lantanide element or silver.

Disclosed is a process for the preparation of cis-1,1,1,4,4,4-hexafluoro-2-butene comprising contacting 1,1,1-trifluorotrichloroethane with hydrogen in the presence of a catalyst comprising ruthenium to produce a product mixture comprising 1316mxx, recovering said 1316mxx as a mixture of Z- and E-isomers, contacting said 1316mxx with hydrogen, in the presence of a catalyst selected from the group consisting of copper on carbon, nickel on carbon, copper and nickel on carbon and copper and palladium on carbon, to produce a second product mixture, comprising E- or Z-CFC-1326mxz, and subjecting said second product mixture to a separation step to provide E- or Z-1326mxz. The E- or Z-1326mxz can be dehydrochlorinated in an aqueous basic solution with an alkali metal hydroxide in the presence of a phase transfer catalyst to produce hexafluoro-2-butyne, which can then be selectively hydrogenated to produce Z-1, 1,1,4,4,4-hexafluoro-2-butene using using either Lindlar's catalyst, or a palladium catalyst further comprising a lantanide element or silver.

Compositions comprising are provided wherein Ris a fluorine containing moiety comprising (CF)CFCH(CF)CH&#x2014;, (CF)CFCH((CF)CF)CH&#x2014;, (CF)CFCH((CF)CH)CH&#x2014;, (CF)CHCH((CF)CF)CH&#x2014;, ((CF)CFCH)CH&#x2014;, (CF)CFCHCF&#x2014;, (CF)CF&#x2014;, (CF)CH&#x2014;, CF&#x2014;, or CF&#x2014;, n being an integer from 2 to 20; Ris F or H; Rcomprises (CF)CF&#x2014;, (CF)CH&#x2014;, CF&#x2014;, F, or H; and Rcomprises (CF)CF&#x2014;, (CF)CH&#x2014;, CF&#x2014;, F, or H, such compositions can produced according to processes, and utilized to prevent combustion utilizing systems.

Fire extinguishing agents, methods for preventing and/or extinguishing combustion, fire extinguishing systems, and production processes

Production processes and systems are provided that include reacting halogenated compounds, dehalogenating compounds, reacting alcohol's, reacting olefins and a saturated compounds, reacting reactants having at least two &#x2014;CFgroups with reactants having cyclic groups, R-compositions such as R-intermediates, R-surfactants, R-monomers, R-monomer units, R-metal complexes, R-phosphate esters, R-glycols, R-urethanes, and or R-foam stabilizers. The Rportion can include at least two groups &#x2014;CFgroups, at least three &#x2014;CFgroups, and/or at least two &#x2014;CFgroups and at least two &#x2014;CHgroups. Detergents, emulsifiers, paints, adhesives, inks, wetting agents, foamers, and defoamers including the R-surfactant composition are provided. Acrylics, resins, and polymers are provided that include a R-monomer unit. Compositions are provided that include a substrate having a R-composition thereover. Aqueous Film Forming Foam ('AFFF') formulations are provided that can include R-surfactants and/or R-foam stabilizers are provided.

Production processes and systems, compositions, surfactants, monomer units, metal complexes, phosphate esters, glycols, aqueous film forming foams, and foam stabilizers

Compositions, combustion prevention compositions, methods for preventing and/or extinguishing combustion, combustion prevention systems, and production processes

R-compositions including surfactants, foam stabilizers, monomers, polymers, urethanes, intermediates, metal complexes, phosphate esters as well as telomerization methods are provided.

Production processes and systems, compositions, surfactants, monomer units, metal complexes, phosphate esters, glycols, aqueous film forming foams and foam stabilizers

Production processes and systems are provided that include reacting halogenated compounds, dehalogenating compounds, reacting alcohol's, reacting olefins and a saturated compounds, reacting reactants having at least two &#x2014;CFgroups with reactants having cyclic groups. R-compositions such as R-intermediates, R-surfactants, R-monomers, R-monomer units, R-metal complexes, R-phosphate esters, R-glycols, R-urethanes, and/or R-foam stabilizers. The Rportion can include at least two &#x2014;CFgroups, at least three &#x2014;CFgroups, and/or at least two &#x2014;CFgroups and at least two &#x2014;CH&#x2014; groups. Detergents, emulsifiers, paints, adhesives, inks, wetting agents, foamers, and defoamers including the R-surfactant composition are provided. Acrylics, resins, and polymers are provided that include a R-monomer unit. Compositions are provided that include a substrate having a R-composition thereover. Aqueous Film Forming Foam ('AFFF') formulations are provided that can include R-surfactants and/or R-foam stabilizers are provided.

Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other embodiments include processes for the production of CFC-217ba and HFC-227ea. Particular embodiments of the present invention provide separation techniques for the separation of chlorofluorocarbons from HF, from other chlorofluorocarbons, and the separation of isomers of halogenated compounds. Still other embodiments of the present invention provide catalytic synthetic techniques that demonstrate extended catalyst lifetime. In other embodiments, the present invention provides catalytic techniques for the purification of isomeric mixtures.

Processes for halogenating compounds

Processes for purifying reaction products and processes for separating chlorofluorinated compounds

Processes for purifying chlorofluorinated compounds

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Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3

Growing community of inventors

Philadelphia, PA, United States of America

Stephan M Brandstadter