| Patent Number |
Title Of Patent |
Date Issued |
| 4940687 |
Catalyst and process for hydrogenation of unsaturated hydrocarbons |
July 10, 1990 |
| Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the average pore radius is 200-2000 |
| 4762956 |
Novel catalyst and process for hydrogenation of unsaturated hydrocarbons |
August 9, 1988 |
| Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the average pore radius is 200-2000 |
| 4558167 |
Hydrogen chloride-propylene separation |
December 10, 1985 |
| Hydrogen chloride is recovered from a mixture with propylene by extractive distillation with an inert extraction solvent to minimize reaction between hydrogen chloride and propylene during such distillation. The temperature and pressure conditions are coordinated with the extraction solv |
| 4351819 |
Recovery of chlorine values in integrated process for oxychlorination and combustion of chlorina |
September 28, 1982 |
| In an integrated process for oxychlorination and combustion of chlorinated hydrocarbons, chlorinated hydrocarbon is burned to recover chlorine values essentially as hydrogen chloride. Hydrogen chloride is recovered from the effluent from the combustion by absorption with aqueous hydrogen |
| 4346069 |
Recovery of chlorine values in integrated process for oxychlorination and combustion of chlorina |
August 24, 1982 |
| In an integrated process for oxychlorination and combustion of chlorinated hydrocarbons, chlorinated hydrocarbons is burned to recover chlorine values essentially as hydrogen chloride. Combustion effluent and off-gas from an oxychlorination reaction are simultaneously treated to recover |
| 4346047 |
Production of phosgene |
August 24, 1982 |
| A molten salt containing the higher and lower valent chlorides, such as mixture of cuprous and cupric chloride, is contacted with oxygen and hydrogen chloride to enrich the salt in the higher valent metal chloride. The salt enriched in the higher valent metal chloride is contacted with |
| 4329525 |
Production of chlorinated compounds by use of molten salts |
May 11, 1982 |
| A compound is chlorinated with chlorine to produce chlorinated product and hydrogen chloride byproduct. Recovered hydrogen chloride byproduct is contacted with oxygen and a molten salt mixture containing the higher and lower valent chlorides of a multivalent metal, such as cuprous and cu |
| 4231969 |
Production of hexachlorocyclopentadiene |
November 4, 1980 |
| Hexachlorocyclopentadiene is produced by the use of a molten salt mixture of cuprous and cupric chloride, with the reaction effluent including the product, chlorine, hydrogen chloride, unreacted feed and organic byproduct, as well as entrained molten salt. The effluent is cooled at a |
| 4207268 |
Oxychlorination of methane |
June 10, 1980 |
| Methane is oxychlorinated to one or more chlorinated methanes, without net production of carbon tetrachloride, by contacting methane and chlorine and/or hydrogen chloride with a molten mixture of cuprous chloride, cupric chloride, and copper oxychloride, in the presence of an amount of c |
| 4119705 |
Production of chlorine |
October 10, 1978 |
| Hydrogen chloride and oxygen are contacted with a molten mixture of cuprous and cupric chloride in a oxidation reaction zone to enrich the cupric chloride content of the melt, and the melt introduced into a dechlorination zone wherein gaseous chlorine is removed from the melt. The ox |
| 4107222 |
Oxychlorination of methane |
August 15, 1978 |
| Methane is oxychlorinated to one or more chlorinated methanes, without net production of carbon tetrachloride, by contacting methane and chlorine and/or hydrogen chloride with a molten mixture of cuprous chloride, cupric chloride, and copper oxychloride, in the presence of an amount of c |
| 4036897 |
Production of hexachlorocyclopentadiene |
July 19, 1977 |
| Hexachlorocyclopentadiene is produced by contacting pentane, pentene, cyclopentane or cyclopentene or chlorinated derivatives thereof with a molten salt mixture of cuprous and cupric chloride. Cyclopentadiene can also be employed as an initial feed, in which case the cyclopentadiene is |
| 3980723 |
Purging of inerts in chlorinated hydrocarbon production |
September 14, 1976 |
| In the production of chlorinated hydrocarbons, a gas stream, containing hydrocarbon and carbon monoxide and/or nitrogen, as inerts, is separated from the effluent, and contacted with chlorinated hydrocarbon, as an absorption liquid, to absorb unreacted hydrocarbon. The absorbed hydro |
| 3968050 |
Oxidation of molten salts and recovery of chlorine values |
July 6, 1976 |
| In the oxidation of a molten salt, such as copper chlorides with the simultaneous recovery of chlorine values, as chlorine and/or hydrogen chloride, oxygen is introduced into a lower bed and chlorine values are introduced into an upper bed for contact with downwardly flowing melt. By |
| 3965202 |
Production of trichloro-ethylene from waste C.sub.2 chlorinated hydrocarbons |
June 22, 1976 |
| All or a portion of chlorinated hydrocarbons convertible to trichloroethylene and/or perchloroethylene by chlorination, dehydrochlorination or dehydrogenation and optionally also dechloroination are recovered from a C.sub.2 chlorinated hydrocarbon waste stream and contacted with a mo |
| 3937744 |
Vinyl chloride process |
February 10, 1976 |
| Process for producing vinyl chloride from ethane by contacting, in a first reactor, ethane and chlorine and/or hydrogen chloride, as fresh feed, and as recycle, hydrogen chloride, ethyl chloride, ethylene and unconverted ethane with a molten mixture, including cuprous chloride, cupric ch |
| 3935288 |
Production of olefinic halides |
January 27, 1976 |
| Olefinic halides are produced by catalytic dehydrohalogenation of the corresponding saturated halide by direct contact thereof with a melt containing a multivalent metal halide in its higher and lower valence state. In particular, 1,2-dichloroethane is dehydrochlorinated to vinyl chl |
