The Chemours Company Fc, LLC

E.i. Dupont De Nemours and Company

Honeywell International Inc.

Xuehui Sun

Mario Joseph Nappa

Karl Robert Krause

David Richard Corbin

Haiyou Wang

Hsueh Sung Tung

Barbara Haviland Minor

Daniel C Merkel

Sheng Peng

Konstantinos Kontomaris

Selma Bektesevic

Joseph A Creazzo

Ivan Sergeyevich Baldychev

Velliyur Nott Mallikarjuna Rao

Haluk Kopkalli

Ekaterina N Swearingen

Lev Moiseevich Yagupolskii

Yurii Lvovich Yagupolskii

Andrey Anatolievich Filatov

Vladimir Nikolaevich Boiko

Allen Capron Sievert

Viacheslav Alexandrovich Petrov

Barry Asher Mahler

Yuon Chiu

Gustavo Cerri

Andrew Jackson

Win-Chung Lee

Jeffrey Ball

Philip L Da Prato

Joseph Anthony Creazzo

Disclosed are compositions comprising HCFC-244bb and/or HFO-1234yf and at least one additional compound. Compositions comprising HCFC-244bb are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Compositions comprising 2,3,3,3 tetrafluoropropene and methods for making and using the compositions

A composition including 2-chloro-3,3,3-trifluoropropene (1233xf), one or more of 2,3-dichloro-1,1,1-trifluoropropane (243db), 1,2-dichloro-3,3,3-trifluoropropene (1223xd), 2,3-dichloro-3,3-difluoropropene (1232xf), 2,2,3-trichloro-1,1,1-trifluoro-propane (233ab), 2,3,3-trichloro-1,1,1-trifluoro-propane (233da), 3,3,3-trifluoropropyne, 1-chloro-3,3,3-trifluoropropyne, 3,3,3-trifluoro-1-propene (1243zf), 1-chloro-3,3,3-trifluoro-1-propene (1233zd), 1-chloro-2,3,3,3-tetrafluoro-1-propene (1224yd), or 2-bromo-3,3,3-trifluoropropene and optionally 1233xf oligomers are disclosed.

2-chloro-3,3,3-trifluoropropene (1233XF) compositions and methods for making and using the compositions

A dehydrohalogenation product includes a hydrochlorofluorocarbon mixture of a fluoroolefin of formula RCX=CZQ and a halofluoroalkane of formula RCXYCZQT. R is a perfluorinated alkyl group and X, Z, and Q are independently H or halogen. One of Y and T is H and the other is Cl, Br, or I. About 80% or greater of the hydrochlorofluorocarbon mixture is the fluoroolefin. The dehydrohalogenation product also includes a caustic agent and a solvent. In some embodiments, the dehydrohalogenation product is free of any catalyst, including any phase transfer catalyst.

Dehydrohalogenation of hydrochlorofluorocarbons

A method of synthesizing 2,3,3,3-tetrafluoropropene (1234yf) from 2-chloro-3,3,3-trifluoropropene (1233xf). The 2-chloro-3,3,3-trifluoropropene (1233xf) is reacted in the vapor phase, in the presence of a catalyst, at a temperature and pressure sufficient to selectively convert the 2-chloro-3,3,3-trifluoropropene (1233xf) to 2,3,3,3-tetrafluoropropene (1234yf) without the use of antimony-based catalysts.

Compositions and methods for synthesis of 2,3-dichloro-1,1,1,2-tetrafluoropropane and 2,3,3,3-tetrafluoropropene

This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one impurity with at least one zeolite to reduce the concentration of the at least one impurity in the mixture; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CFCF═CH, CFCH═CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CFCCl═CH, CFCH═CHCl, and mixtures thereof.

Process for the reduction of RC=CX impurities in fluoroolefins

The present application provides a process of preparing 3,3,3-trifluoroprop-1-ene, comprising reacting 3-chloro-1,1,1-trifluoropropane with a base in an aqueous solvent component in the absence of a phase transfer catalyst.

Process for preparing 3,3,3-trifluoroprop-1-ene

A process is provided comprising contacting and reacting the compound CFCFCHXCl, wherein X is H or Cl, or the compound CFCF═CXCl, wherein X is H or Cl, with hydrogen in the presence of a catalyst consisting essentially of Cu, Ru, Cu—Pd, Ni—Cu, and Ni—Pd, to obtain as a result thereof reaction product comprising hydrofluoropropenes or intermediates convertible to said hydrofluoropropenes, notably CFCF═CHand CFCH═CHF.

Conversion of chlorofluororopanes and chlorofluropropenes to more desirable fluoropropanes and fluororopenes and compositions thereof

The present disclosure relates to compositions comprising Z-1,1,1,4,4,4-hexafluoro-2-butene and additional compounds that may be useful as refrigerants, heat transfer compositions, aerosol propellants, foaming agents, blowing agents, solvents, cleaning agents, carrier fluids, displacement drying agents, buffing abrasion agents, polymerization media, expansion agents for polyolefins and polyurethane, gaseous dielectrics, power cycle working fluids, extinguishing agents, and fire suppression agents in liquid or vapor form.

Compositions comprising Z-1, 1, 1,4,4,4-hexafluoro-2-butene and uses thereof

A method hydrofluorinates an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCXHCFYZ, where X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C-Calkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C-Calkyl which is unsubstituted or substituted with chloro or fluoro or bromo. The method includes reacting the olefin with HF in the vapor phase, in the presence of SbF, at a temperature ranging from about −30° C. to about 65° C. and compositions formed by the process.

Compositions including olefin and hydrofluoroalkane

A method of chlorinating a antimony fluorohalide catalyst is disclosed. In one embodiment the method comprises contacting an antimony fluorohalide catalyst that contains one or more fluorines with a regenerating agent chosen from 2-chloro-3,3,3-trifluoropropene (1233xf), 1,1,1,3-tetrachloropropane (250fb), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and combinations of 1233xf, 250fb, and 244bb, under conditions effective to exchange at least one fluorine in the antimony fluorohalide catalyst with chlorine. The method can be used to regenerate spent antimony fluorohalide catalyst, for example regenerating SbClfrom SbF.

Fluorine removal from antimony fluorohalide catalyst using chlorocarbons

Process for the reduction of RƒC≡CX impurities in fluoroolefins

A dehydrohalogenation product includes a hydrochlorofluorocarbon mixture of a fluoroolefin of formula RCX&#x2550;CZQ and a halofluoroalkane of formula RCXYCZQT. R is a perfluorinated alkyl group and X, Z, and Q are independently H or halogen. One of Y and T is H and the other is Cl, Br, or I. About 80% or greater of the hydrochlorofluorocarbon mixture is the fluoroolefin. The dehydrohalogenation product also includes a caustic agent and a solvent. In some embodiments, the dehydrohalogenation product is free of any catalyst, including any phase transfer catalyst.

A method hydrofluorinates an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCXHCFYZ, where X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C-Calkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C-Calkyl which is unsubstituted or substituted with chloro or fluoro or bromo. The method includes reacting the olefin with HF in the vapor phase, in the presence of SbF, at a temperature ranging from about &#x2212;30&#xb0; C. to about 65&#xb0; C. and compositions formed by the process.

Growing community of inventors

Swedesboro, NJ, United States of America

Xuehui Sun