"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7671244 | Method for producing 1,2-dichloroethane by means of direct chlorination The invention relates to a method for producing high-purity 1,2-dichloroethane from dissolved chlorine and dissolved ethylene which are brought into contact with each other using a circulating liquid reaction medium which essentially consists of 1,2-dichloroethane a... | 03/02/2010 |
| 7579509 | Method and device for producing 1,2-dichlorethane by means of direct chlorination The invention refers to a process for the production of high-purity 1,2-dichloroethane from dissolved chlorine and dissolved ethylene, which are brought into contact with each other in a circulating liquid reaction fluid, which mainly consists of 1,2-dichlorethane a... | 08/25/2009 |
| 7348461 | Processes for halogenating compounds Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other... | 03/25/2008 |
| 7132578 | One-step synthesis of CF-1 A process for the preparation of trifluoromethyl iodide is provided. The process includes the step of contacting in a reactor a compound represented by the formula: CF3—W and a compound represented by the for... | 11/07/2006 |
| 7102042 | Method for producing substituted fluorene monomers A method for preparing a composition of the formula in a yield greater than 50% where R1 is C 1-20 comprising the steps of combining fluorene or dibromo flourene, an excess of alkali metal hydroxide and a ha... | 09/05/2006 |
| 7094936 | Process for preparing halogenated alkanes Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl ch... | 08/22/2006 |
| 7009084 | Method for producing 1, 2-dichloroethane by direct chlorination The invention relates to a method for producing high purity 1,2-dichloroethane using a liquid reaction medium that is circulated and that is essentially composed of 1,2-dichloroethane and a catalyst. At least ethylene and chlorine are added to the reaction medium an... | 03/07/2006 |
| 6984763 | Oxidative halogenation and optional dehydrogenation of c3+hydrocarbons An oxidative halogenation and optional dehydrogenation process involving contacting a reactant hydrocarbon having three or more carbon atoms, such as propane or propene, or a halogenated derivative thereof, with a source of halogen, and optionally, a source of oxyge... | 01/10/2006 |
| 6977316 | Direct one-step synthesis of trifluoromethyl iodide A catalytic one-step process for the production of CF3I by reacting, preferably in the presence of a source of oxygen, a source of iodine with a reactant of the formula: CF3R where R is —SH, —S—S—CF3, —S... | 12/20/2005 |
| 6933417 | Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only partially recovered from the... | 08/23/2005 |
| 6909024 | Process for the conversion of ethylene to vinyl chloride and novel catalyst compositions useful for such process This invention is a process for producing vinyl chloride from an ethylene-containing feed, oxygen, and a chlorine source in the presence of a catalyst. The process permits direct production of vinyl chloride in a single reactor system, and further permits ethane to ... | 06/21/2005 |
| 6841708 | Method of producing ethylene (di)chloride (EDC) With a method or a device for producing 1,2-dichloroethane or ethylene (di)chloride (EDC) with the use of a circulating reaction medium and a catalyst, whereby ethylene and chlorine are supplied to the reaction medium, the goal is to permit the catalytic chlorinatio... | 01/11/2005 |
| 6756513 | Process for preparing monochlorinated hydrocarbons having a high isomeric purity Monochlorinated hydrocarbons of high isomeric purity are prepared by a process, which comprises: reacting a monoalcohol having an alkyl radical having from 3 to 20 carbon atoms with cyanuric chloride; and purifying the resulting monochlorinated hydroca... | 06/29/2004 |
| 6255544 | Process for the manufacture of halocarbons A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1 R2 CBR3 R4 (where A, B, R1, R2, R3, and R4 are as defined in the speci... | 07/03/2001 |
| 6229059 | Process for the production of 1, 2-dichloroethane Using a process for the production of 1,2-dichloroethane by reacting ethylene and chlorine in the liquid phase in the presence of a catalyst, the 1,2-dichloroethane produced being drawn off in the gaseous phase, the high-boilers being separated from the 1... | 05/08/2001 |
| 6204419 | Process and apparatus for preparing 1,2-dichloroethane by direct chlorination Process and apparatus for preparing 1,2-Dichloroethane by direct chlorination If in the reaction of ethylene with chlorine to form 1,2-dichloroethane (EDC) the catalyst components sodium chloride and iron(III) chloride are used in a molar ratio of below 0... | 03/20/2001 |
| 5986152 | Supported catalyst, process for its production as well as its use in the oxychlorination of ethylene 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... | 11/16/1999 |
| 5696309 | Purification of halogenated carbon compounds Disclosed is a method of chlorinating vinylidene chloride contained in a solution 1,1 -dichloro-1-fluoroethane to provide a chlorinated compound having a boiling point different from the 1,1-dichloro-1-fluoroethane to permit separation therefrom. The meth... | 12/09/1997 |
| 5569798 | Chlorination of halogenated carbon compounds for purification purposes A method of chlorinating vinylidene chloride contained in a solution 1,1-dichloro-1-fluoroethane to provide a chlorinated compound having a boiling point different from the 1,1-dichloro-1-fluoroethane to permit separation therefrom, the method comprising ... | 10/29/1996 |
| 5527975 | Process for the preparation of bromochloro-alkanes Bromochloro-alkanes are made by reaction of a corresponding chloroalkene with hydrogen bromide by a continuous process carried at -20° to +20° C., preferably in a gas-lift reactor.... | 06/18/1996 |
| 5315052 | Concurrent production of trichloroethane isomers 1,1,1-Trichloroethane (viz., methylchloroform) and 1,1,2-trichloroethane are produced in the same reactor by feeding molecular chlorine and chloroethene (viz., vinyl chloride) as well as 1,1-dichloroethane to the reactor. The ratios at which the two trich... | 05/24/1994 |
| 4922042 | Production of 1,2-dichloroethane Process for the production of 1,2-dichloroethane by the reaction between ethylene and chlorine in the vapor phase in the presence of a catalyst comprising alumina, wherein the reaction is carried out using a fluidized bed comprising fluidizable, substanti... | 05/01/1990 |
| 4873384 | Method for producing dichloroethane A method for producing dichloroethane (EDC) by reacting ethylene and chlorine in a liquid reaction medium composed mainly of EDC at a temperature of not less than the boiling point of EDC measured at ordinary pressure, characterized by leading the vapor o... | 10/10/1989 |
| 4832873 | Process for producing polybrominated higher alkylbenzenes Polybrominated higher alkylbenzenes may be produced by reacting the corresponding hydrocarbon material with bromine chloride in an excess bromine reaction medium in the presence of an antimony halide catalyst.... | 05/23/1989 |
| 4783564 | Method for the preparation of 1,2-dichloroethane A method is disclosed for the preparation of 1,2-dichloroethane in a reactor by the reaction of gaseous ethylene with chlorine dissolved in a hot, catalyst-containing, liquid circulating stream that is under elevated pressure and consists of chlorinated h... | 11/08/1988 |
| 4774372 | Method for producing dichloroethane A method for producing dichloroethane (EDC) from ethylene and chlorine in high selectivity, yield and efficiency and in high safety wherein the unreacted ethylene and oxygen included in an exhaust gas discharged from a reactor are prevented from forming a... | 09/27/1988 |
| 4774373 | Process for making 1,2-dichloroethane The disclosure relates to a process for making 1,2-dichloroethane by reacting ethylene with chlorine in a solvent in the presence of a catalyst, at a temperature of about 20° to 200° C. at atmospheric or elevated pressure, and distillatively separating ... | 09/27/1988 |
| 4754088 | Process for oxychlorination of ethylene 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 oxychlorin... | 06/28/1988 |
| 4672142 | Process for making 1,2-dichloroethane The disclosure relates to a process for making 1,2-dichloroethane by reacting ethylene and chlorine in a reaction zone having a liquid medium containing chlorinated C2 -hydrocarbons circulated therein. To this end, the disclosure provides: (a) ... | 06/09/1987 |
| 4410747 | Process for producing 1,2-dichloroethane In the technology for producing 1,2-dichloroethane by reacting ethylene with chlorine by a liquid phase reaction at 65° to 160° C. in 1,2-dichloroethane containing a metal chloride catalyst, there is a disadvantage of a side reaction for producing 1,1,2... | 10/18/1983 |
| 4329323 | Process for removing ethylene and vinyl chloride from gas stream A process for removing ethylene and vinyl chloride from a gas stream containing them by passing a mixed gas containing ethylene, vinyl chloride and a necessary amount of chlorine through a fixed-bed reactor charged with as a catalyst an activated alumina ... | 05/11/1982 |
| 4259264 | Process for the continuous chlorination of olefins in the liquid phase and an apparatus for carrying out the process In the chlorination of ethylene in the liquid phase, an excess stoichiometric amount of chlorine is normally used in order to achieve as complete as possible a conversion of the ethylene. Part of the excess chlorine reacts by substitution and thereby redu... | 03/31/1981 |
| 4226812 | Process for producing chlorotrifluoroethylene An improved process is described for producing chlorotrifluoroethylene, a useful monomer for making high strength chlorofluoropolymers, comprising passing a mixture of 1,1,2-trichloro-1,2,2-trifluoroethane, ethylene, hydrogen chloride and elemental oxygen... | 10/07/1980 |
| 4072728 | Process for the preparation of 1,2-dichloroethane in two reaction zones by reacting chlorine with not more than 102 mole percent of ethylene An improved process for the production of 1,2-dichloroethane in which chlorine and ethylene are reacted in the liquid phase in the absence of light and in the presence of a Lewis acid catalyst wherein all of the chlorine used in the reaction and a fractio... | 02/07/1978 |
| 4034049 | Mo catalyzed chlorination of dichlorobutenes Meso-1,2,3,4-tetrachlorobutane is produced in an improved liquid phase chlorination process wherein the trans-1,4-dichlorobutene-2 is contacted with chlorine in the presence of a catalytic amount of molybdenum.... | 07/05/1977 |
| 4029714 | Ethylene/chlorine elimination process An improvement in a process for recovering residual amounts of ethylene in ethylene chlorination effluents is disclosed, whereby ureacted chlorine is virtually eliminated. Elimination of the chlorine is accomplished by reacting it with the clorinated hydr... | 06/14/1977 |
| 3980725 | Meso-1,2,3,4-tetrachlorobutane production Meso-1,2,3,4-tetrachlorobutane is produced in an improved liquid phase chlorination process wherein trans-1,4-dichlorobutene-2 is contacted with chlorine in the additional presence of an effective amount of nitric oxide.... | 09/14/1976 |
| 3968179 | Selective preparation of 1,2-dichloroethane A process for the continuous chlorination of ethylene in the liquid phase in the absence of light and in the presence of 1,2-dichloroethane and dissolved ferric chloride wherein the reaction is carried out in a homogeneous reaction zone in which the react... | 07/06/1976 |