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| Number | Title | Issue Date |
| 7074434 | Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane... | 07/11/2006 |
| 6861566 | Process for producing 1-chloro-4-arylbutane There is provided an industrially advantageous process for producing a 1-chloro-4-arylbutane represented by the general formula (2): wherein R represents hydrogen, lower alkyl, or lower alkoxy, characterized by reactin... | 03/01/2005 |
| 5981818 | Integrated cracking and olefins derivative process utilizing dilute olefins A novel process is provided which integrates the cracking of hydrocarbon containing feedstocks with the olefins purification and olefins derivative process utilizing dilute olefin feedstocks.... | 11/09/1999 |
| 5977419 | Process for the preparation of substituted phenylpropenes The invention relates to novel processes for the preparation of phenyl acetic acid derivatives of the formula (I) some of which are known ##STR1## in which R1, R2 and R3 independently of each other each represent hydr... | 11/02/1999 |
| 5917098 | Preparation of 1,1,1,3,3-pentachlorobutane and 1,1,1,3,3-pentafluorobutane 1,1,1,3,3-Pentachlorobutane, whose fluorination leads to 1,1,1,3,3-pentafluorobutane, is prepared with high yield and selectivity by addition of carbon tetrachloride to 2-chloropropene in the presence of a copper salt and an amine.... | 06/29/1999 |
| 5268517 | Stereoselective preparation of Z-1,2-diarylallyl chlorides and the conversion thereof into azolylmethyloxiranes, and novel intermediates The preparation of Z-1,2-diarylallyl chlorides of the general formula I ##STR1## in which R1 and R2, independently of one another, are hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or a substituted aromatic radical, an... | 12/07/1993 |
| 5262575 | Production of allylic chlorides This invention, in one respect, is a process for producing allylic chlorides which comprises contacting a feedstream containing an olefin in the gas phase with a chlorination composition under conditions effective to produce an allylic chlorine and wherei... | 11/16/1993 |
| 5243109 | Tribromostyrene products and process for making them Tribromostyrene (TBS) is produced by the preparation of a TBS precursor, which is ଲ-bromoethyl-tribromobenzene (ଲ-BrBr3), and the successive elimination of hydrogen bromide from said precursor. The precursor is prepared by selective... | 09/07/1993 |
| 5100986 | Flame retardant brominated styrene-based coatings Halogenated styrene-based coatings having surprisingly good physical properties in combination with flame retardancy are prepared from copolymers of ring-halogenated, ethylenically unsaturated aromatic monomers and aliphatic conjugated dienes having from ... | 03/31/1992 |
| 5066752 | Flame retardant brominated styrene-based polymers Halogenated styrene-based polymers having surprisingly good physical properties in combination with flame retardancy include copolymers of ring-halogenated, ethylenically unsaturated aromatic monomers and aliphatic conjugated dienes having from 4 to 10 ca... | 11/19/1991 |
| 4898998 | Process for producing brominated acenaphthylene condensates A process for producing brominated acenaphthylene condensates of the formula: ##STR1## wherein x is 1 or 2, y is an integer from 1 to 6 and n is 1 or more, from elementary units of the following formulas: ##STR2## wherein y is as defined ab... | 02/06/1990 |
| 4886922 | Catalyst for dehydrohalogenation A method for preparing an -substituted styrene such as 2-(3,5-dichlorophenyl)-4,4,4-trichloro-1-butene comprising contacting, an -haloalkylbenzene such as 3-(3,5-dichlorophenyl)-1,1,1,3-tetrachlorobutane with a catalyst consisting essen... | 12/12/1989 |
| 4814522 | Catalytic fluoroolefin transhalogenations Catalyzed halogen exchange between perhaloolefins to form products of the formulas: and wherein R1, R2, R3, R5, Rhu 6l , and R7 are individually selected from the group F, Cl, Br, C1 to C4 | 03/21/1989 |
| 4734534 | Preparing cis-olefinic compounds from acetylenic compounds Novel alumina-supported nickel boride catalysts prepared by the borohydride promoted reduction of nickel arsenate are described. Method of catalyst preparation and process for hydrogenation of acetylenic and diolefinic compounds employing the invention ca... | 03/29/1988 |
| 4686311 | Dehydrohalogenation of haloethyl brominated benzenes A process for the preparation of bromostyrenes which comprises aqueous alcoholic alkali dehydrohalogenation of a 1-haloethyl bromobenzene, a 2-haloethyl bromobenzene, or a 1-methyl-2-haloethyl brominated benzene in the presence of a phase transfer catalys... | 08/11/1987 |
| 4668832 | Dehydration of halogenated, unsaturated alcohols to form halogenated, conjugated dienes Halogenated, unsaturated alcohols are dehydrated by contacting the alcohol and a carrier gas with a silica alumina catalyst to form dienes of the formula: ##STR1## wherein each X is independently hydrogen, fluorine chlorine, or bromine with the ... | 05/26/1987 |
| 4650910 | Process for the preparation of substituted styrenes Substituted styrenes are prepared by treatment on N-acyl-B-phenethylamines with bases and removal by distillation of the styrene which is formed during the reaction.... | 03/17/1987 |
| 4633026 | Process for preparing ring-halogenated vinyl aromatic monomers A process for preparing ring-halogenated vinyl aromatic monomers comprising reacting ring-halogenated (alpha- or beta-bromoethyl)benzenes or ring-halogenated (alpha- or beta-bromoethyl)toluenes with a strong aqueous alkali base in the presence of a poly(e... | 12/30/1986 |
| 4599469 | Hydrogenation process Process for the hydrogenation of functionally substituted acetylenic compounds employing catalyst comprising nickel boride on an inorganic oxide support is disclosed. Functionally-substituted acetylenic compounds are selectively reduced under mild reactio... | 07/08/1986 |
| 4594467 | Preparation of 3,5-dichloro--methylstyrene 3,5-Dichloro--methylstyrene is prepared from -bromo-3,5-dichlorocumene by reaction with alkali metal hydroxide solutions in the presence of phase-transfer catalysts.... | 06/10/1986 |
| 4571438 | Process for preparing olefinic aldehydes and chemical intermediates A process for the preparation of olefinic aldehydes and intermediates is disclosed. The condensation of an ,ω-dihalide with a metal acetylide gives an acetylenic halide which can be reduced to give an olefinic halide, then oxidized to give the des... | 02/18/1986 |
| 4540826 | Process for preparing olefinic aldehydes A process for the preparation of olefinic aldehydes and intermediates is disclosed. The condensation of an ,ω-dihalide with a metal acetylide gives an acetylenic halide which can be reduced to give an olefinic halide, then oxidized to give the des... | 09/10/1985 |
| 4489212 | Process for preparing allyl- and 2-chloropropyl- or propenylarene compounds Arenes are reacted with allyl chloride to produce allylarenes and 2-chloropropyl- or propenylarenes using a catalyst comprising a metal oxide substrate having tantalum (V) halide/oxide bound to the surface of the substrate.... | 12/18/1984 |
| 4443625 | Product for treating soil to suppress the nitrification of ammonium nitrogen therein The present invention relates to crop culture and is particularly concerned with practices for conserving soil nitrogen and for supplying the soil nitrogen requirements for plant nutrition. These practices involve the employment, as active agent, of a nov... | 04/17/1984 |
| 4423262 | Preparation of dibromostyrene A process for the preparation of an ar-dibromostyrene which comprises aqueous alcoholic alkali dehydrobromination of 2-bromoethyl dibromobenzene in the presence of a phase transfer catalyst at a temperature of between about 0° C. and about 150° C. The a... | 12/27/1983 |
| 4342704 | Process for the preparation of 1,1-dichloroalkenes A process for the preparation of a 1,1-dichloroalkene of the formula ##STR1## in which R1 is hydrogen or an optionally substituted alkyl, alkenyl, alkynyl, aralkyl or aryl radical, and R2 is an optionally substituted alkyl, alkenyl, ... | 08/03/1982 |
| 4334111 | Process for preparing substituted benzotrihalides Benzotrihalides are prepared by pyrolyzing a substituted phenyl trihaloacetate of the formula ##STR1## wherein each X is halo, nitro, alkyloxy, aryloxy, aralkyoxy, cyano, lower alkyl, haloalkyl, haloalkyloxy, alkenyl, haloalkenyl, carbamoyl, N,N... | 06/08/1982 |
| 4292453 | Process for preparing ring halogenated styrenes The present invention relates to the production of ring-halogenated styrene monomers of high purity. These are of value in the production of polymers which possess flame retardance. The process of the invention comprises reacting heterogenously ring halog... | 09/29/1981 |
| 4267388 | Process for producing ethynylbenzenes There is disclosed a novel process for preparing anti-inflammatory ethynylbenzene derivatives represented by the general formula I: ##STR1## wherein Y is hydrogen, halogen or loweralkyl of 1 to 3 carbon atoms; R represents a ring having the structure... | 05/12/1981 |
| 4230642 | Process for producing 3,5-dichloro--methylstyrene 1-Bromo-3,5-dichlorobenzene is reacted with magnesium in a solvent and acetone is added to react it with the reaction product and a mineral acid is added to hydrolyze the resulting -(3,5-dichlorophenyl) isopropoxymagnesium bromide and then, the pro... | 10/28/1980 |
| 4205015 | Dehydrohalogenation of (polyhaloalkyl) benzenes with support Lewis acid catalysts A process for the dehydrohalogenation of a (polyhaloalkyl)benzene containing a benzylic halogen such as 1,3-dichloro-5-(2,4,4,4-tetrachlorobutyl)-benzene by contacting the (polyhaloalkyl)benzene with a Lewis acid such as AlCl3 deposited on ... | 05/27/1980 |
| 4188346 | Dehydrohalogenation of (polyhaloalkyl)benzenes A process for the dehydrohalogenation of a (polyhaloalkyl)benzene containing a benzylic halogen such as 1,3-dichloro-5-(2,4,4,4-tetrachlorobutyl)benzene by contacting the (polyhaloalkyl)benzene with a suitably active Lewis acid catalyst such as SbCl | 02/12/1980 |
| 4164583 | Benz[f]isoindoline compounds The present invention provides benz[f]isoindolines, useful in the treatment of aggression, a process for their preparation and compositions containing these compounds.... | 08/14/1979 |
| 4153719 | Aromatic diketones Beta-diketones substituted by an aryl-aliphatic group in which the aliphatic chain is interrupted by a cyclic group, and useful as anti-viral agents, are prepared by interacting the appropriate aryl-aliphatic halide with an alkali metal salt of a beta-dik... | 05/08/1979 |
| 4045501 | Method for making o- and p- haloalkyl styrenes A method for making o- and p- halomethyl styrenes which comprises reacting an ethyl benzene, paraformaldehyde and hydrogen halide, treating the reaction product with a halogen, and dehydrohalogenating the resulting o- and p- halomethyl (1-haloethyl) benze... | 08/30/1977 |
| 4028429 | Preparation of high trans-isomer content 1,4-dienes 1,4-Dienes of high trans-isomer content are prepared by contacting ethylene with a 1,3-diene in the presence of a catalyst system comprising an organic solvent-soluble organonickel compound in which the nickel is zerovalent or divalent, a hydrocarbylalumi... | 06/07/1977 |
| 4025570 | Preparation of 1,4-dienes of high trans-isomer content 1,4-Dienes of high trans-isomer content are prepared by contacting ethylene with a 1,3-diene in the presence of a catalyst system comprising an organic solvent-soluble organonickel compound in which the nickel is zerovalent or divalent, a hydrocarbylalumi... | 05/24/1977 |
| 3998895 | Preparation of polychloroalkenyl aromatic compounds Polychloroalkenyl aromatic compounds as exemplified by (1,3-dichloroallyl)benzene are prepared by the condensation of chloroalkyl aromatic compounds such as benzyl chloride with polychloroalkene compounds characterized by the presence of at least one chlo... | 12/21/1976 |
| 3962357 | Process for the preparation of substituted vinylbenzyl chloride An improved continous single step vapor phase process for the preparation of substituted vinylbenzyl chloride from substituted ethyltoluene is disclosed. In this process a substituted ethyltoluene is reacted with a halogen gas in the vapor phase, at eleva... | 06/08/1976 |
