| Patent Number |
Title Of Patent |
Date Issued |
| 5986152 |
Supported catalyst, process for its production as well as its use in the oxychlorination of ethy |
November 16, 1999 |
| A supported catalyst includes: a) 0.5-15 wt. % of one or more Cu-II compounds, the quantitative amounts referring to copper metal; b) 0.1-8 wt. % of one or more alkali metal compounds, the quantitative amounts referring to alkali metal; c) 0.1-10 wt. % of an oxide mixture including; |
| 5233106 |
Process for the hydrogenation of chloromethanes |
August 3, 1993 |
| A process is provided for the hydrogenation of chloromethanes of the formula CH.sub.n Cl.sub.m, where n=0 to 3 and m=4-n, with hydrogen at a temperature of 150.degree. to 250.degree. C. and under an absolute pressure of 1 to 10 bar, by means of a supported catalyst comprising an acti |
| 5177233 |
Catalyst system and use for the preparation of 1,2-dichloroethane |
January 5, 1993 |
| A catalyst system for the preparation of 1,2-dichloroethane by reacting ethylene and chlorine in a solvent, if desired, in the presence of an inhibitor for reducing the formation of byproducts. The catalyst system comprises a phenolate/chlorine complex. The invention also relates to a |
| 5166120 |
Cylindrically formed catalyst for the oxychlorination of ethylene |
November 24, 1992 |
| A carrier catalyst containing copper and alkali ions on an annular carrier of surface-active material is defined by the dimensions of the carrier body and the porosity of the finished catalyst. Its total pore volume is 0.6-1.0 ml/g, pores smaller than 4 nm diameter are not present, pores |
| 5099085 |
Chlorination reactions and oxychlorination reactions in the presence of honeycomb monolithic cat |
March 24, 1992 |
| The use of hitherto known supported catalysts in chlorination processes and oxychlorination processes leads to high pressure drops and to the formation of hot spot temperatures in the reactor. When honeycomb monolithic catalyst supports provided with a multiplicity of channels open a |
| 5068475 |
Process for purifying unreacted 1,2-dichloroethane from a 1,2-dichloroethane pyrolysis process |
November 26, 1991 |
| The invention relates to a process for purifying unreacted 1,2-dichloroethane from a 1,2-dichloroethane pyrolysis process by chlorinating the benzene produced as a by-product and removing the chlorination products by distillation. |
| 4986975 |
Process for purifying hydrogen chloride from pyrolysis of 1,2-dichloroethane |
January 22, 1991 |
| The invention is a multi-stage process for purifying hydrogen chloride containing acetylene and ethylene, from pyrolysis of 1,2-dichloroethane to provide highly pure hydrogen chloride for use in the preparation of silicon compounds. In the first stage, unsaturated by-products are chl |
| 4839153 |
Process for purification of HCl from pyrolysis of EDC |
June 13, 1989 |
| In a process for the purification of hydrogen chloride from the pyrolysis of 1,2-dichloroethane, optionally after a preceding step of acetylene removal by selective hydrogenation under specific conditions followed by rectification of the resulting mixture to obtain hydrogen chloride |
| 4822932 |
Heat recovery in production of vinyl chloride by pyrolysis of dichloroethane |
April 18, 1989 |
| In a method of treating the reaction product of pyrolysis of 1,2-dichloroethane to form vinyl chloride and hydrogen chloride with multiple stage cooling and distillation separation of the reaction product and recycle of unreacted 1,2-dichloroethane to the pyrolysis step, the improvem |
| 4788357 |
Vinyl chloride production |
November 29, 1988 |
| An improved method of producing vinyl chloride by pyrolysis of purified 1,2-dichloroethane at temperatures from 480.degree. C. to 540.degree. C. at a pressure of 10 to 36 bar absolute with partial utilization of the heat content of the flue gases from the pyrolysis furnace firing to |
| 4754088 |
Process for oxychlorination of ethylene |
June 28, 1988 |
| In a process for preparation of 1,2-dichloroethane by chlorination of ethylene-containing reaction vent gases from the oxychlorination of ethylene in the presence of a catalyst carrier impregnated with metal compounds wherein the waste from the oxychlorination stage are chlorinated, |
| 4746759 |
Process for thermal cracking of 1,2-dichloroethane to form vinyl chloride |
May 24, 1988 |
| An improved process for the preparation of vinyl chloride from 1,2-dichloroethane (EDC) wherein 0.10 to 0.15 % by weight of carbon tetrachloride based on EDC, is used as a cracking promoter and the CHCl.sub.3 content is limited to less than 200 ppm. Before being fed to the cracking z |
| 4606742 |
Novel heat recovery process |
August 19, 1986 |
| In a method of recovering heat from flue gas resulting from the combustion of chlorinated organic compounds at 900.degree. to 1300.degree. C. at a pressure of 0.9 to 1.5 bar absolute whereby the flue gas is cooled with the recovery of heat and hydrogen chloride is processed, the improvem |
| 4584123 |
Process for upgrading hydrogen chloride containing chlorine, iron-III-chloride, ethylene and/or |
April 22, 1986 |
| A process of upgrading hydrogen chloride which contains chlorine, iron-III-chloride, acetylene and/or ethylene, for use in an oxichlorination process, wherein water in a gaseous state is added to the hydrogen chloride at temperatures between 120.degree. and 180.degree. C. within a ti |
| 4540837 |
Process for the work-up of residues of chlorination |
September 10, 1985 |
| A process for the work-up of chlorination residues by dissolving the same at temperatures between 100.degree. and 180.degree. C. in chlorine- and oxygen-containing hydrocarbons having a ratio by weight of hydrogen to chlorine of 0.028-0.06:1, a ratio by weight of oxygen:carbon of 0.0 |
| 4409396 |
Process for the manufacture of unsaturated carboxylic acid esters |
October 11, 1983 |
| The invention relates to a process for the manufacture of unsaturated carboxylic acid esters by the reaction of olefins or cyclo-olefins with oxygen and carboxylic acids in the gaseous phase, in the presence of a catalyst which contains elements of the subsidiary group VIII of the pe |
| 4388278 |
Purification by hydrogenation of hydrogen chloride containing acetylene obtained by the thermal |
June 14, 1983 |
| The invention is a process for the purification of hydrogen chloride formed during the thermal cracking of 1,2-dichloroethane, by hydrogenating the acetylene impurities with excess hydrogen, at pressures of from 8 to 20 bar absolute and at temperatures of from 120.degree. to 180.degree. |
| 4188347 |
Process for treating unreacted 1,2-dichloroethane from 1,2-dichloroethane cracking |
February 12, 1980 |
| An improved process for removal of chloroprene from 1,2-dichloroethane recovered unconverted from the effluent of 1,2-dichloroethane pyrolysis. The chloroprene is chlorinated with chlorine in the presence of o- or m-cresol or a chlorinated derivative thereof, and the excess chlorine from |
