Abstract: The present invention involves methods for isomerization of 1234zc. Also provided are methods for managing 1,1,3,3-tetrafluoropropene produced as a byproduct in a process for synthesizing trans-1,3,3,3-tetrafluoropropene from 245fa, wherein 1234zc is converted into trans/cis-1234ze with the help of a catalyst in the absence of HF and in an isomerization reactor, or is converted into 1234zc and/or 245fa with the help of a catalyst in the presence of HF in a separate reactor or preferably in the same reactor of 245fa dehydrofluorination.

Abstract: The present invention involves methods for isomerization of 1234zc. Also provided are methods for managing 1,1,3,3-tetrafluoropropene produced as a byproduct in a process for synthesizing trans-1,3,3,3-tetrafluoropropene from 245fa, wherein 1234zc is converted into trans/cis-1234ze with the help of a catalyst in the absence of HF and in an isomerization reactor, or is converted into 1234zc and/or 245fa with the help of a catalyst in the presence of HF in a separate reactor or preferably in the same reactor of 245fa dehydrofluorination.

Abstract: Provided is a continuous process for preparing 1,1,2,3-tetrachloro-1-propene having the steps of catalytically dehydrochlorinating CH2ClCCl2CH2Cl in the gas phase to produce CHCl?CClCH2Cl; chlorinating the CHCl?CClCH2Cl to form CHCl2CCl2CH2Cl; and catalytically dehydrochlorinating the CHCl2CCl2CH2Cl in the gas phase to form CCl2?CClCH2Cl.

Abstract: Disclosed is a process for making one isomer of CF3CH?CHCl. More particularly, the invention comprises the production of CF3C?CCl and its selective reduction to cis-1-chloro-3,3,3-trifluoropropene (CF3CH?CHCl).

Abstract: Disclosed are processes for an isomerization reaction between (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene. Some of the disclosed processes include the step of contacting a feed stream with a heated surface, where the feed stream includes (E)1-chloro-3,3,3-trifluoropropene, (Z)1-chloro-3,3,3-trifluoropropene or mixtures thereof. The resulting product stream includes (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene, where the ratio of (E) isomer to (Z) isomer in the product stream is different than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.

Abstract: Disclosed are heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The heat transfer fluid comprise from about 30 to about 70 percent, on a molar basis, of carbon dioxide (CO2) and from about 30 to about 70 percent, on a molar basis, of hydrofluorocarbon (HFC), preferably HFC having one to two carbon atoms, and even more preferably trans-1,1,1,3-tetrafluoropropene (HFC-32). The preferred fluids of the present invention have a vapor pressure of at least about 100 psia at 40?F and are also preferably not azeotropic.

Abstract: Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF?CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2?CClCH2Cl is fluorinated to synthesize a compound such as CF3CCl?CH2. The CF3CCl?CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf. For the first step, a mixture of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl?CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.

Abstract: Provided is a composition comprising (a) at least one halogenated compound selected from the group consisting of C3-C5 hydrofluoroolefin, CF3I, and combinations thereof, and (b) an effective stabilizing amount of a sesquiterpene selected from the group consisting of farnesol, farnesene, and mixtures thereof.

Abstract: Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF?CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2?CClCH2Cl (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CF3CCl?CH2, preferably in a 80-96% selectivity. The CF3CCl?CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl?CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3.

Abstract: A process for the preparation of 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential. A process comprises a) reacting chlorotrifluoroethylene with a methyl halide to form an intermediate product stream; and b) reacting the intermediate product stream with hydrogen fluoride to thereby produce a result comprising 2,3,3,3-tetrafluoropropene.

Abstract: The present invention provides a method for the preparation of suitable chlorofluorocarbon and hydrochlorofluorocarbon materials or chlorofluorocarbon and hydrochlorofluorocarbon alkene and alkyne intermediates which serve as useful feedstock for fluorination and reduction to cis-1,1,1,4,4,4-hexafluoro-2-butene. Also presented is a continuous process for the production of cis-1,1,1,4,4,4-hexafluoro-2-butene from the alkene and alkyne intermediates.

Abstract: Disclosed is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkane with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents of the chlorofluoroalkane with hydrogen to produce a fluorine-containing olefin. Also disclosed are catalyst compositions for the hydrodechlorination of chlorofluoroalkanes comprising copper metal deposited on a support, and comprising palladium deposited on calcium fluoride, poisoned with lead and reducing the in the presence or absence of a dehydrochlorination catalyst under conditions effective to form a product stream comprising cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336).

Abstract: Disclosed is a process for making hexafluoro-2-butyne comprising the steps of: (a) providing a composition comprising CF3CX?CXCF3, where X=halogen; and (b) treating CF3CX?CXCF3 with a dehalogenation catalyst in the presence of a halogen acceptor compound Y, where Y is not hydrogen. The halogen acceptor compound Y is a material capable of being halogenated, preferably a compound having a multiple bond, such as an alkyne, alkene, allene, or carbon monoxide. Another suitable material capable of being halogenated is a cyclopropane. A catalyst effectively transfers halogen from CF3CX?CXCF3 to the halogen acceptor compound. Since Y is not hydrogen, the formation of CF3CX?CHCF3 is greatly reduced or eliminated.

Abstract: Disclosed is a process for preparing cis-1,1,1,4,4,4-hexafluoropropene comprising the steps of (a) reacting CCl4 with a compound having the formula CF3CX?CXH, where each X is independently halogen or hydrogen, to form a compound having the formula CF3CXClCXHCCl3; (b) fluorinating the compound formed in step (a) to form a compound having the formula CF3CXHCXHCF3; (c) converting the compound formed in step (b) by a reaction selected from the group consisting of dehydrohalogenation, dehalogenation and both reactions, to form a compound having the formula CF3C?CCF3; and (d) catalytically reducing the compound formed in step (c) with hydrogen to form the compound having the formula:

Abstract: A method for preparing 2,3,3,3-tetrafluoropropene comprising contacting a reactant comprising CCl2?CFCH2Cl with a fluorinating agent, such as HF, under conditions effective to produce a reaction product comprising CF3CF?CH2.

Abstract: The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a non-amine catalyst used alone or in combination with an amine catalyst.

Abstract: A process for the production of fluorinated alkanes by contacting a feed stream containing a fluorinated olefin and a reducing agent, preferably with a first amount of catalyst to produce a fluorinated alkane, at a first conversion level, wherein a first effluent stream contains unreacted fluorinated olefin and reducing agent; and contacting the first effluent stream under conditions effective to produce a higher level of conversion than said conversion level.

Abstract: The invention pertains to heat transfer compositions, particularly to automobile refrigerants comprising a hydrofluoroalkene, an iodocarbon, and at least one lubricant having hydrogen atoms and carbon atoms, wherein no more than 17% of the total number of hydrogen atoms which are attached to a carbon atom are tertiary hydrogen atoms.

Abstract: Disclosed is a process for the preparation of fluorinated olefins. In preferred embodiments C3 olefins are produced by methods comprising contacting a compound of the Formula (I) C(R1aR2bR3c)??(I) with a compound of Formula (II) C(R1aR2bR3c)Cn(R1aR2bR3c)??II wherein R1a, R2b, and R3c are independently a hydrogen atom or a halogen selected from the group consisting of fluorine; chlorine, bromine and iodine, provided that the compound of formula I has at least three halogen substituents and that said at three halogen substituents comprise at least one fluorine; a, b and c are independently=0, 1, 2 or 3 and (a+b+c)=2 or 3; and n is 0 or 1, under conditions effective to produce at least one C3 fluoroolefin.

Abstract: A process for the production of fluorinated alkanes by contacting a feed stream containing a fluorinated olefin and a reducing agent, preferably with a first amount of catalyst to produce a fluorinated alkane, at a first conversion level, wherein a first effluent stream contains unreacted fluorinated olefin and reducing agent; and contacting the first effluent stream under conditions effective to produce a higher level of conversion than said conversion level.