| Patent Number |
Title Of Patent |
Date Issued |
| 5972827 |
Catalytic oxychlorination of hydrocarbons to produce chlorocarbons |
October 26, 1999 |
| Hydrocarbons, e.g., ethylene, are steady-state catalytically oxychlorinated into chlorocarbons, e.g., 1,2-dichloroethane, by fluidizing a fluidizable charge by directing a gaseous feedstream containing a hydrocarbon therethrough and therein oxychlorinating such hydrocarbon, the gaseous |
| 5705720 |
Continuous process for cracking 1,2-dichloroethane |
January 6, 1998 |
| A thermal process for cracking 1,2-dichloroethane to form vinyl chloride comprising heating 1,2-dichloroethane in a reaction zone at a temperature between 300.degree. and 650.degree. C. under an absolute pressure between 1 and 40 bars; said heating being conducted in the presence of |
| 5637781 |
Process for the alcoholysis of carbon tetrachloride |
June 10, 1997 |
| The invention relates to a process for the alcoholysis of carbon tetrachloride which consists in simultaneously sending, on the one hand, carbon tetrachloride and, on the other hand, an alcohol ROH, over a catalytic composition, characterized in that the said catalytic composition co |
| 5488190 |
Prepartion of vinyl chloride by ultrapyrolysis of 1,2-dichloroethane |
January 30, 1996 |
| Vinyl chloride monomer is selectively prepared by intimately contacting, in the absence of steam, a feedstream of 1,2-dichloroethane with a flow of fluid or solid particulates heated to such elevated temperature and for such minim period of time, e.g., 0.010 to 0.5 second, as to flash tr |
| 5475135 |
Catalyst for the dehalogenation of .alpha.-halogenated carboxylic acids |
December 12, 1995 |
| The invention relates to a catalyst comprising a rare metal of Group VIII of the Periodic Table of Elements which has been deposited on an inert support and which has been used to dehalogenate .alpha.-halogenated carboxylic acids in the presence of hydrogen, and a rare metal of Group |
| 5466650 |
Catalyst for the dehalogenation of alphahalogenated carboxylic acids and its use for purifying m |
November 14, 1995 |
| The invention relates to a catalyst formed of an active charcoal support in the form of particles or of cylinders having a diameter from 0.3 to 1.5 mm and a length of 0.3 to 5 mm or spheres having a diameter from 0.3 to 2 mm, the said particles being loaded with a precious metal from gro |
| 5466650 |
Catalyst for the dehalogenation of alphahalogenated carboxylic acids and its use for purifying m |
November 14, 1995 |
| The invention relates to a catalyst formed of an active charcoal support in the form of particles or of cylinders having a diameter from 0.3 to 1.5 mm and a length of 0.3 to 5 mm or spheres having a diameter from 0.3 to 2 mm, the said particles being loaded with a precious metal from gro |
| 5414116 |
Catalyst for the dehalogenation of alphahalogenated carboxylic acids and its use for purifying m |
May 9, 1995 |
| The invention relates to a catalyst formed of an active charcoal support in the form of particles or of cylinders having a diameter from 0.3 to 1.5 mm and a length of 0.3 to 5 mm or spheres having a diameter from 0.3 to 2 mm, the said particles being loaded with a precious metal from gro |
| 5401876 |
Synthesis of chloroacetic acids |
March 28, 1995 |
| Chloroacetic acids and essentially pure hydrochloric acid are prepared by chlorinating acetic acid in the presence of a catalytically effective amount of acetic anhydride, acetyl chloride, or admixture thereof, whereby byproducing a gaseous stream of crude hydrochloric acid, contacting s |
| 5399796 |
Purification of 1,1-dichloro-1-fluoroethane |
March 21, 1995 |
| This invention relates to a process for the purification of 1,1-dichloro-1-fluorethane.To remove unsaturated impurities such as 1,1-dichloroethylene and dichloracetylene the crude 1,1-dichloro-1-fluoroethane is subjected to the action of chlorine and/or of a hydracid. This treatment is c |
| 5356850 |
Catalyst for the dehalogenation of .alpha.-halogenated carboxylic acids |
October 18, 1994 |
| The invention relates to a catalyst comprising a rare metal of Group VIII of the Periodic Table of Elements which has been deposited on an inert support and which has been used to dehalogenate .alpha.-halogenated carboxylic acids in the presence of hydrogen, and a rare metal of Group |
| 5326918 |
Purification of 1,1-dichloro-1-fluoroethane |
July 5, 1994 |
| This invention relates to a process to remove the unsaturated impurities (in particular vinylidene chloride) present in a crude 1,1-dichloro-1-fluoroethane. This process comprises subjecting the product to be purified, in the liquid phase, in the presence of oxygen, to an irradiation |
| 5278122 |
Catalyst for dehalogenation of alpha-halogenated carboxylic acids/esters |
January 11, 1994 |
| The alpha-halogenated carboxylic acids/esters are dehalogenated by reaction with hydrogen in the presence of a catalytically effective amount of (i) a Group VIII precious metal catalyst and (ii) either sulfur or a sulfur compound, or (iii) a novel precious metal/sulfur solid phase cataly |
| 5243111 |
Catalytic oxychlorination of hydrocarbons to produce chlorocarbons |
September 7, 1993 |
| Hydrocarbons, e.g., ethylene, are steady-state catalytically oxychlorinated into chlorocarbons, e.g., 1,2-dichloroethane, by fluidizing a fluidizable charge by directing a gaseous feedstream containing a hydrocarbon therethrough and therein oxychlorinating such hydrocarbon, the gaseous |
| 5227549 |
Synthesis of 1,2-dichloroethane by CCl.sub.4 oxychlorination of ethylene |
July 13, 1993 |
| A major amount of 1,2-dichloroethane (D12) and lesser amounts of trichloroethane and tetrachloroethane are prepared by contacting carbon tetrachloride, ethylene and oxygen (or an oxygen-containing gas, notably air) with an oxychlorination catalyst at a temperature sufficient to produ |
| 5191118 |
Catalytic dehalogenation of alpha-halogenated carboxylic acids/esters |
March 2, 1993 |
| The alpha-halogenated carboxylic acids/esters are dehalogenated by reaction with hydrogen in the presence of a catalytically effective amount of (i) a Group VIII precious metal catalyst and (ii) either sulfur or a sulfur compound, or (iii) a novel precious metal/sulfur solid phase cataly |
| 5116799 |
Oxychlorination of hydrocarbons |
May 26, 1992 |
| Chlorinated hydrocarbons, e.g., 1,2-dichloroethane, are prepared by heterogeneously oxychlorinating a hydrocarbon with an oxygen-containing gas and gaseous hydrochloric acid in a fluidized bed containing admixture of (i) a catalytically effective amount of an oxychlorination catalyst, |
| 5097081 |
Hydrodechlorination of higher chloromethanes |
March 17, 1992 |
| The highly chlorinated methanes, e.g., carbon tetrachloride, are improvedly dechlorinated by reacting same with hydrogen in the presence of oxygen or an oxygen-containing gas, e.g., air, and a catalytically effective amount of a metal of the copper or precious metal Groups of the Periodi |
| 5053567 |
Oxychlorination of hydrocarbons |
October 1, 1991 |
| Chlorinated hydrocarbons, e.g., 1,2-dichloroethane, are prepared by heterogenously oxychlorinating a hydrocarbon with an oxygen-containing gas and gaseous hydrochloric acid in a fluidized bed containing admixture of (i) a catalytically effective amount of an oxychlorination catalyst, (ii |
| 4954231 |
Functional chlorofluoro compounds and their preparation |
September 4, 1990 |
| The subject of the invention is functional chlorofluoro compounds of general formula: ##STR1## in which R.sub.F denotes a perfluoroalkyl radical, n is equal to 0 or 1, X denotes a chlorine or fluorine atom or a trichloromethyl or trifluoromethyl radical, and Y denotes a chlorine |
| 4301092 |
Preparation of oxalyl chloride |
November 17, 1981 |
| Oxalyl chloride is prepared by (i) first esterifying ethylene glycol with trichloroacetyl chloride, (ii) next photochemically chlorinating the ester which results from the step (i), i.e., ethylene glycol bis-trichloroacetate, and (iii) then decomposing the tetrachloroethylene glycol |
| 4172957 |
Production of monochloroacetyl chloride and monochloroacetic acid by hydration of trichloroethyl |
October 30, 1979 |
| Continuous process for the production of monochloroacetyl chloride accompanied, if the need should arise, by monochloroacetic acid, from trichloroethylene and/or 1,1,1,2-tetrachloroethane by reaction for hydration of trichloroethylene and/or 1,1,1,2-tetrachloroethane under pressure o |
