Abstract:
The present invention relates to a process for the preparation of haloethylenes, and preferably perhaloethylenes, by the gas-phase dechlorination of haloethanes in the presence of a catalyst and optionally in the presence of an alkene or an alkane. In particular aspects, the invention relates to a gas-phase process for preparing chlorotrifluoroethylene (CTFE). More particularly, the present invention relates to a gas-phase process for preparing CTFE from 1,1,2-trichloro- 1,2,2-trifluoroethane (CFC-113) by dechlorination in the presence of an alkene or an alkane and a catalyst.
Abstract:
The present disclosure relates to a method for producing trifluoroiodomethane (CF3I) from iodine (l2) and trifluoroacetic anhydride (TFAA) under photochemical conditions using ultraviolet (UV) light.
Abstract:
Provided are methods of producing fluorinated alcohols from non-perfluorinated fluoroolefins and methanol. Certain preferred embodiments of such methods involve advantageously reacting a non-perfluorinated fluoroolefin with methanol under ambient-pressure and/or low-temperature conditions.
Abstract:
Provided are polymers derived from bridged heterocyclic compounds, fluorinated norbornene compounds, fluorinated alkenes, heterocyclic compounds, and combinations of two or more thereof for use in a wide variety of applications, including photoresist compositions. Also provided are methods for producing the monomer compounds for use in the present polymers.
Abstract:
Present invention relates to novel fluorinated ethers and to a process for producing such fluorinated ethers. Such fluorinated ethers find use in as solvents, anesthetics, refrigerants, cleaning compositions, dry cleaning compositions, blowing agents, flame retardants, formulations of dyes used in optical recording media, microemulsions, and heat transfer compositions. The fluorinated ethers have the formula R-O-R 1 wherein R = CF 3 -CXH-CYZ wherein each of X, Y and Z are independently H or halogen; and R 1 is a C 1 to C 16 alkyl group or a halogen substituted C 1 to C 16 alkyl group.
Abstract:
A process for preparing 1-chloro-1,1,3,3,3-pentafluoropropane, CF 3 CH 2 CF 2 Cl, comprising contacting in a reaction zone in the substantial absence of oxygen, reactants comprising chlorine and 1,1,1,3,3-pentafluoropropane, CF 3 CH 2 CHF 2 (also referred to as HFC-245fa), and subjecting the reactants to actinic radiation, such as UV light at about 2,000 to 4,000 Angstroms, wherein: (1) inert gas is present at a concentration equal to or less than about 5 wt.% of the total weight of reactants; (2) the molar ratio of chlorine to CF 3 CH 2 CHF 2 is from about 0.2:1 to about 1.5:1; and (3) the concentration of chlorinated product produced having greater than one chlorine present in the molecule is less than or equal to about 10 wt.%.
Abstract:
The present invention provides an ink for recordable media comprising a coating moiety and at least one fluorinated alcohol solvent for said at least one coating moiety, the fluorinated alcohol solvent preferably having a surface tension of not greater than about 27 dynes/cm. In certain preferred embodiments the fluorinated alcohol has the structure R f -OH, wherein R f is selected from the group consisting of H-[CX 2 ] n ; Z-[CX 2 -CX 2 ] n ; Z-[CZX-CX 2 ] n ; Z-[CZX-CZX] n -; CZ 2 CH-; Z-[CX=CX] ri ; Z-[CZ=CX] n ; Z-[CZ=CZ] n ; Z-[CX 2 ] n CX 2 =CX-[CX 2 ] n - and Z-CZX-CX(CZX 2 )-, wherein Z is independently -CF 3 , -CHF 2 , - CH 2 F; -R-CF 3 , -R-CHF 2 , or -R-CH 2 F, wherein R is a substituted or unsubstituted C 1 -C 12 alkyl radical, or a substituted or unsubstituted fluorinated C 1 -C 12 alkyl radical; X is independently hydrogen, Cl, Br, F, I, or Z; and n is an integer from 1 to 20.
Abstract:
Disclosed in one embodiment is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises (a) reacting a compound of formula (I) X 1 X 2 with a compound of formula (II) CF 3 CH=CH 2 to produce a reaction product comprising a compound of formula (III) CF 3 CHX 1 CH 2 X 2 , wherein X 1 and X 2 are each independently selected from the group consisting of hydrogen, chlorine, bromine and iodine, provided that X 1 and X 2 are not both hydrogen; (b) when X 2 in formula (III) is not fluorine, fluorinating the compound of formula (III) to produce a reaction product comprising a compound of formula (III) wherein X 1 is as described above and X 2 is fluorine; and (c) exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3,-tetrafluoropropene. In another embodiment, the process comprises (a) reacting chlorine with a compound of formula ( I) CH 3 CH=CH 2 to produce a reaction product comprising a compound of formula ( II) CCI 3 CHC1CH 2 C1; (b) fluorinating the compound of formula ( II) to produce a reaction product comprising a compound of formula ( III ) CF 3 CHC1CH 2 F; and (c) exposing said compound of said formula ( III ) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.
Abstract:
Provided are polymers derived from fluoroalkyl norbornenes, fluorinated crotonates, fluorinated allyl alcohols, and combinations of two or more thereof for use in a wide variety of applications, including photoresist compositions. Also provided are methods for producing the fluoroalkyl norbornenes, fluorinated crotonates, and fluorinated allyl alcohols for use in the present polymers.
Abstract:
Provided are polymers derived from fluoroalkyl norbornenes, fluorinated crotonates, fluorinated allyl alcohols, and combinations of two or more thereof for use in a wide variety of applications, including photoresist compositions. Also provided are methods for producing the fluoroalkyl norbornenes, fluorinated crotonates, and fluorinated allyl alcohols for use in the present polymers.