E.i. Dupont De Nemours and Company

The Chemours Company Fc, LLC

Butamax Advanced Biofuels LLC

Jeffrey P Knapp

Barry Asher Mahler

Mario Joseph Nappa

Velliyur Nott Mallikarjuna Rao

Leo Ernest Manzer

Michael Brian D'Amore

Edward S Miller, Jr

Allen Capron Sievert

Sheng Peng

Donald J Toton

Mark B Shiflett

Akimichi Yokozeki

Konstantinos Kontomaris

Joan Ellen Bartelt

Joshua Hughes

Olagappan Muthu

Michael B D'amore

The present application discloses compositions comprising hydrogen fluoride and fluorinated compounds (e.g., hydrochlorofluorocarbons), wherein the fluorinated compound is present in the composition in an amount effective to form an azeotrope composition or azeotrope-like composition with the hydrogen fluoride.

Azeotropic compositions comprising hydrogen fluoride and fluorocarbons

Disclosed are compositions comprising HFC-245eb and at least one additional compound selected from the group consisting of HFO-1234ze, HFC-245fa, HFC-236cb, HFC-236ea, HFC-236fa, HFC-227ea, HFC-227ca, HFO-1225yc, HFO-1225zc, HFO-1225ye, methane, ethane, propane, HFC-23, HFC-143a, HFC-134, HFC-134a, FC-1216, HFO-1234yf, HFC-254eb, HFO-1243zf, and HFC-254fb. Compositions comprising HFC-245eb are useful in processes to make HFO-1234yf. Also disclosed are compositions comprising HFO-1234yf and at least one additional compound selected from the group consisting of HFO-1234ze, HFC-254eb, HFC-254fb, HFO-1243zf, HFCHFC-245eb, HFC-245fa, HFC-245cb, HFC-236cb, HFC-236ea, HFC-236fa, HFC-227ea, HFC-227ca, HFO-1225yc, HFO-1225zc, HFO-1225ye, methane, ethane, propane, HFC-23, HFC-134, HFC-134a, HFO-1132a and FC-1216. Compositions comprising HFO-1234yf are useful as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Compositions comprising 1,1,1,2,3-pentafluoropropane or 2,3,3,3-tetrafluoropropene

The present application discloses compositions comprising hydrogen fluoride and fluorinated compounds (e.g., hydrofluorocarbons), wherein the fluorinated compound is present in the composition in an amount effective to form an azeotrope composition or azeotrope-like composition with the hydrogen fluoride.

The present invention relates to a catalytic process for making isooctenes using a reactant comprising isobutanol and water. The isooctenes so produced are useful for the production of fuel additives.

Process for making isooctenes from aqueous isobutanol

A chiller apparatus containing a composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene.

Composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene, apparatus containing same and methods of producing cooling therein

The present disclosure relates to a process for separating a fluoroolefin from a mixture comprising hydrogen fluoride and fluoroolefin, comprising azeotropic distillation both with and without an entrainer. In particular are disclosed processes for separating any of HFC-1225ye, HFC-1234ze, HFC-1234yf or HFC-1243zf from HF.

Processes for separation of fluoroolefins from hydrogen fluoride by azeotropic distillation

The present invention relates to a process for making isooctenes using dry 1-butanol derived from fermentation broth. The isooctenes so produced are useful for the production of fuel additives.

Process for making isooctenes from dry 1-butanol

A process for separating cis-1,1,1,4,4,4-hexafluoro-2-butene from a first mixture comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and at least one chlorofluoroolefin is disclosed. The process involves the steps of contacting the mixture with at least one extractive agent, to form another mixture, distilling the mixture; and recovering cis-1,1,1,4,4,4-hexafluoro-2-butene substantially free of chlorofluoroolefin.

Purification of cis-1,1,1,4,4,4-hexafluoro-2-butene via extractive distillation

Disclosed herein are processes for separation of 2,3,3,3-tetrafluoropropene and hydrogen fluoride using azeotropic distillation. Additionally, disclosed are processes for separating mixtures of 2,3,3,3-tetrafluoropropene, hydrogen fluoride and 1,1,1,2,3-pentafluoropropane (HFC-245eb) and/or 1,1,1,2,2-pentafluoropropane (HFC-245cb) by azeotropic distillation.

Processes for separation of 2,3,3,3-tetrafluoropropene from hydrogen fluoride by azeotropic distillation

Described is a process for separating 1,1,1,2-tetrafluoropropane and hydrogen fluoride from a mixture comprising 1,1,1,2-tetrafluoropropane, 1,1,1,2,3-pentafluoropropane and hydrogen fluoride comprising: subjecting said 1,1,1,2-tetrafluoropropane, 1,1,1,2,3-pentafluoropropane and hydrogen fluoride mixture to a distillation step, forming a column distillate composition comprising an azeotropic or near-azeotropic composition of said 1,1,1,2-tetrafluoropropane and hydrogen fluoride, and a bottoms composition of 1,1,1,2,3-pentafluoropropane. The column distillate may optionally be made essentially free of 1,1,1,2,3-pentafluoropropane and the column bottoms composition may optionally be made essentially free of HF. Also described is a process for separating 1,1,1,2-tetrafluoropropane and hydrogen fluoride from a mixture of 1,1,1,2-tetrafluoropropane and hydrogen fluoride. Also described are azeotropic and azeotrope-like compositions comprising 1,1,1,2-tetrafluoropropane and hydrogen fluoride.

Hydrogen fluoride-HFC-254eb azeotrope and its uses

The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoroheptene ethers and trans-1,2-dichloroethylene. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions.

Azeotropic and azeotrope-like compositions of methyl perfluoroheptene ethers and trans-1,2-dichloroethylene and uses thereof

Halocarbons of the structure CFCFCHX, wherein X is either F or Cl or mixtures thereof prepared by: contacting at least one 2-fluorochloropropane with hydrogen fluoride in a first fluorination step in the gas phase or liquid phase under substantially anhydrous conditions, in the absence of added catalyst to partially fluorinate said 2-fluorochloropropane; contacting said partially fluorinated 2-fluorochloropropane with at least the stoichiometric molar equivalent of hydrogen fluoride under substantially anhydrous conditions, in the presence of at least one fluorination catalyst in a second fluorination step; removing said reaction products from contact with said catalyst, and isolating a substantial yield of at least 1,1,1,2,2,3-hexafluoropropane or 1,1,1,2,2, penta-3-chloropropane, or mixtures thereof, respectively.

Growing community of inventors

Wilmington, DE, United States of America

Jeffrey P Knapp