Honeywell International Inc.

Yian Zhai

Andrew Joseph Poss

Rajiv R Singh

Haridasan K Nair

David Nalewajek

Rajiv Banavali

Glenn Matthies

Hsueh Sung Tung

Haiyou Wang

Michael Van Der Puy

Willie Perez

John L Welch

Ralph John Borowski

Fang Huang Tu

Lucas Peter Labuda

Willie Josue Perez

The invention relates to a process for reducing the concentration of a fluorinated alkyne impurity, such as 3,3,3-trifluoropropyne (TFPY), in 2,3,3,3-tetrafluoropropene (HFO-1234yf) which comprises contacting such a mixture with a caustic material, such as sodium hydroxide (NaOH), under conditions effective to reduce the concentration of the fluorinated alkyne impurity, including in some practices reducing the concentration by at least about 50%.

Process for reducing 3,3,3-trifluoropropyne in 2,3,3,3-tetrafluoropropene

Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (HFO-1234yf) and vinylidene fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising HFO-1234yf and vinylidene fluoride in a 1234yf:vinylidene fluoride molar ratio of from about 0.5 to about 1.2.

Process for making 2,3,3,3-tetrafluoropropene and/or vinylidene fluoride

The production of 1, 1, 2-trifluoro-2-(trifluoromethyl)cyclobutane (TFMCB). More specifically, the present invention relates to a process for making 1, 1, 2-trifluoro-2-(trifluoromethyl)cyclobutane via a continuous catalytic reaction from commercially available raw materials ethylene and hexafluoropropene.

Process for the production of fluorinated cyclobutane

The production of 1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane (TFMCB). More specifically, the present invention relates to a process for making 1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane via a continuous catalytic reaction from commercially available raw materials ethylene and hexafluoropropene.

Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (1234yf) and vinylidene fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising 1234yf and vinylidene fluoride in a 1234yf:vinylidene fluoride molar ratio of from about 0.5 to about 1.2.

Process for making 2,3,3,3-tetrafluoropropene and/or vinylidine fluoride

The present invention is related to making hydrofluorocarbons (HCFCs), more specifically, 3,3,3-trifluoropropyne (TFP), from trans-1-chloro-3,3,3-trifluoropropene (trans-1233zd) by contacting the trans-1233zd with a base. Preferably, the base is potassium hydroxide or potassium tert-butoxide, which may or may not be dissolved in as solvent.

Dehalogenation of trans-1-chloro-3,3,3-trifluoropropene

To address the problem of insufficient biodegradability of perfluorinated surfactants, the present invention provides biodegradable fluorosurfactants derived from olefins having &#x2014;CHR, &#x2014;CHRf, &#x2014;CHF, and/or &#x2014;CHgroups, where R is an alkyl group and Rf is a perfluoro or fluroroalkyl group. Preferably, the &#x2014;CHR, &#x2014;CHRf, &#x2014;CHF, and/or &#x2014;CHgroups are contained within partially fluorinated alkenes.

Fluorosurfactants having improved biodegradability

The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides routes for HCFO-1233zd from inexpensive and commercially available trifluoromethane (HFC-23).

Process for 1-chloro-3,3,3-trifluoropropene from trifluoromethane

The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides several routes for forming HCFO-1233zd from 3,3,3-trifluoropropene (FC-1234zf).

Process for 1-chloro-3,3,3-trifluoropropene from trifluoropropene

In accordance with the present invention, processes for producing bromofluoropropenes in commercial quantities by reacting 3,3,3-trifluoropropyne with hydrogen bromide at elevated temperatures are provided.

Synthesis of 1-BROM0-3,3,3-trifluoropropene

In accordance with the present invention, processes of synthesizing 3,3,3-trifluoropropyne from 1,3,3,3-tetrafluoropropene, 1-chloro-3,3,3-trifluoropropene, and/or 1,1,1,3,3-pentafluoropropane are provided.

Synthesis of 3,3,3-trifluoropropyne

Disclosed is a process for the preparation of cis-1-chloro-3,3,3-trifluoropropene (cis-1233zd) comprising the steps of (a) providing CFCHClCHCl(233da), and (b) treating the 233da with a dechlorinating agent to produce a mixture of compounds including cis-1-chloro-3,3,3-trifluoropropene, preferably wherein the amount of the cis-isomer generated in the reaction is not less than 30%.

Process for cis-1-chloro-3,3,3-trifluoropropene

Disclosed is a process for making the compound 1,1,2-trichloro-3,3,3-trifluoropropane (233da) by the catalytic fluorination of 1,1,1,2,3,3-hexachloropropane. 233da is a starting material used in the production cis-1-chloro-3,3,3-trifluoropropene (cis-1233zd).

Process for preparing 1,1,2-Trichloro-3,3,3-trifluoropropane

Disclosed is a process for making cis-1-chloro-3,3,3-trifluoropropene comprising reacting 3,3,3-trifluoropropyne with HCl in a reaction vessel at a yield of at least about 80%.

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Amherst, NY, United States of America

Yian Zhai