Processes for the production of chlorinated propenes are provided. The present processes make use of a feedstock comprising 1,2,3-trichloropropane and chlorinates the 1,1,2,3-tetrachloropropane generated by the process prior to a dehydrochlorination step. Production of the less desirable pentachloropropane isomer, 1,1,2,3,3-pentachloropropane, is thus minimized. The present processes provide better reaction yield as compared to conventional processes that require dehydrochlorination of 1,1,2,3-tetrachloropropane prior to chlorinating the same. The present process can also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, while limiting the production of waste water, thus providing further time and cost savings.

Process for the production of chlorinated propenes

There is provided an azeotrope or azeotrope-like composition containing (A) 1,1,2,2-tetrafluoro-1-methoxyethane and (B) a compound formed of at least one selected from the group consisting of (Z)-1-chloro-3,3,3-trifluoropropene, 2-bromo-3,3,3-trifluoropropene, and (E)-2-bromo-1,3,3,3-tetrafluoropropene.

Azeotrope or azeotrope-like composition comprising 1,1,2,2-tetrafluoro-1-methoxyethane

The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.

Process for the production of chlorinated and/or fluorinated propenes

A gas-injection type refrigeration-cycle device has heat exchanger where refrigerant extracts waste heat from heating devices. In the refrigeration-cycle device, the mode is changed between where lower-pressure refrigerant extracts heat and where intermediate-pressure refrigerant extracts the heat of the hot water. The lower-pressure refrigerant is drawn into compressor, after heat exchanger is set at the lower-pressure side of the refrigeration cycle. The intermediate-pressure refrigerant is introduced into compressor-gas-injection port, after heat exchanger is set at the intermediate-pressure side of the refrigeration cycle. In another aspect, a defrosting mode of outdoor heat exchanger includes a heating mode, and gas refrigerant discharged from compressor flows through condenser without heat exchange. Thereafter, the flow of the gas refrigerant is divided to two portions, and the gas refrigerant of one portion flows into outdoor heat exchanger, thereby defrosting outdoor heat exchanger. The other portion flows into evaporator, thereby heating blown air within an air-conditioning duct by evaporator.

Refrigeration cycle device

The invention relates to a process for removing one or more undesired (hydro)halocarbon compounds from a (hydro)fluoroalkene, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminium-containing absorbent, activated carbon, or a mixture thereof.

Process for purifying (hydro)fluoroalkenes

There is provided a method for producing trans-1,3,3,3-tetrafluoropropene, which includes the step of bringing cis-1,3,3,3-tetrafluoropropene into contact, in a gas phase, with a metal oxide, an activated carbon supporting thereon a metal compound, or a fluorinated derivative thereof, as a catalyst.

Method for producing trans-1,3,3,3-tetrafluoropropene

PROBLEM TO BE SOLVED: To produce 1,1,1,3,3-pentachloropropane that is useful as a precursor for producing 1,1,1,3,3-pentafluoropropane. SOLUTION: Carbon tetrachloride and vinyl chloride are allowed to react with each other in the presence of a catalyst comprising iron and a phosphoric or phosphorous ester.

Method of producing 1,1,1,3,3-pentachloro-propane

Disclosed is a method for producing difluoroacetic acid esters useful as intermediates and functional intermediates for medicines and agricultural chemicals from readily available raw materials in an industrially advantageous and efficient manner. SOLUTION: Formula 1-alkoxy-1,1,2,2-tetrafluoroethane represented by the formula: wherein R 1 represents a linear or branched alkyl group having 1 to 20 carbon atoms. Is reacted with an alcohol having 1 to 20 carbon atoms and a metal hydroxide or metal alkoxide to obtain a metal salt of difluoroacetic acid, and the resulting metal salt of difluoroacetic acid is converted to a compound having 1 to 10 carbon atoms in the presence of an acid. React with alcohol to obtain difluoroacetic acid ester. According to the production method of the present invention, it can be produced on a simple and industrial scale in a short process compared to the prior art. [Selection figure] None

Method for producing difluoroacetic acid ester

PROBLEM TO BE SOLVED: To prepare an incombustible mixture manufactured by making HFE-254pc (combustible) incombustible that has less global warming ability, less environmental impact and less gaseous heat conductivity, and is useful for a foaming agent, a cooling medium, a solvent, a detergent, a heat transfer medium, a working fluid, a reaction solvent, a coating material solvent, an extracting agent, a hydro-extracting agent, a drying agent and a solvent for air spray, and to provide a method for manufacturing a foam using the incombustible mixture as the foaming agent. SOLUTION: The incombustible composition is manufactured by mixing the hydrofluoroether HFE-254pc (CHF 2 CF 2 OCH 3 ) with incombustible hydrofluoroethers (incombustible HFE) to be incombustible. The method for manufacturing the foam uses the composition as the foaming agent. COPYRIGHT: (C)2005,JPO&NCIPI

Methods for manufacturing incombustible composition and synthetic resin foam

To provide an industrial process for producing HFE-254pc which is highly safe and economical. (1) A step of reacting with an alcohol in the presence of an aprotic solvent and / or a crown ether using a fluoroolefin as a basic catalyst and an additive. (2) A step of removing the reaction product from the reactor and purifying the reaction product separated from the unreacted raw material after drying. And (3) A method for producing a hydrofluoroether comprising a step of returning the unreacted raw material containing the separated catalyst, aprotic polar solvent and / or alcohol to the reactor again and reacting the fluoroolefin with the alcohol.

Satoru Okamoto

Papers

Method for producing trans-1,3,3,3-tetrafluoropropene

Method of producing 1,1,1,3,3-pentachloro-propane

Method for producing difluoroacetic acid ester

Methods for manufacturing incombustible composition and synthetic resin foam

Method for producing hydrofluoroether (hfe)