Class 570/208 - Catalyst utilized

Subclass of Class 570 - Organic compounds -- part of the class 532-570 series
Definition: Process employing a catalyst.
No. of patents: 94
Last issue date: 04/15/2008

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Number	Title	Issue Date
7358407	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically...	04/15/2008
7255927	Laminate composition This invention concerns a thermosetting resin system that is useful in the manufacture of high performance prepreg, laminate and composite materials as well as, prepregs, laminates and composites made from the thermosetting resin composition. ...	08/14/2007
7179950	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically...	02/20/2007
7125952	(Partially) conjugated polymer process for its preparation and use in electroluminescent devices A polymer for use in an optical device comprising one or more regions, where each region comprises (i) a first structural unit having general formula I: where m=1 or 2 and which contains at least one substituent se...	10/24/2006
7090924	Thermosetting resin composition for high performance laminates This invention concerns a thermosetting resin system that is useful in the manufacture of high performance prepreg, laminate and composite materials as well as the prepregs, laminates and composites made from the thermosetting resin composition. ...	08/15/2006
7084317	Oxidative halogenation of aromatic compound A process for the halogenation of an aromatic compound wherein the aromatic compound is admixed with a halogenating agent in the presence of an ionic liquid is described. The method in preferably halide, sulfur or nitrate ionic liquids has significant advantages ove...	08/01/2006
7012166	Catalyst composition and method for chlorinating aromatic compounds Aromatic compounds such as toluene and o-xylene are chlorinated in the presence of a catalyst combination prepared by combining (A) at least one salt comprising a metal selected from the group consisting of a Group 4–12 metal, a lanthanide and an actinide; and a c...	03/14/2006
6974887	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically...	12/13/2005
6958423	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically...	10/25/2005
6930216	Method for the nuclear chlorination of ortho-xylene A method for the nuclear chlorination of ortho-xylene using a chlorinating agent in the presence of at least one Friedel-Crafts catalyst and chloro-substituted 2,8-dimethylphenoxathiin as co-catalyst. The co-catalyst used is preferably tetrachlorinated 2,8-dimethylp...	08/16/2005
6841707	Method and apparatus for producing decabromodiphenyl alkanes A method of producing decabromodiphenyl alkanes includes the steps of charging a reaction vessel with bromine and a bromination catalyst and introducing a diphenyl alkane into the vessel at a location above the level of the charge bromine and catalyst. A dip tube ap...	01/11/2005
6768033	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from disphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economicall...	07/27/2004
6710217	Method for producing 4-chlorobiphenyl and 4-chlorobiphenyl-specific specifications The invention relates to a process for preparing 4-chlorobiphenyl by (a) reacting biphenyl and chlorine in the presence of one or more ring-chlorination catalysts, and (b) subjecting the reaction mixture obtained in step (a) to fractional distillation ...	03/23/2004
6706934	Method for producing 2,3,4,5-tetrachlorobenzotrifluoride Disclosed herein is a method for producing 2,3,4,5-tetrachlorobenzotrifluoride comprising chlorinating 4-chlorobenzotrifluoride with elemental chlorine, in the presence of from 0.1 to 2% by weight of iron(III) chloride and 0.05 to 0.75% by weight of aluminum(III) ch...	03/16/2004
6603049	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most e...	08/05/2003
6518468	Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most e...	02/11/2003
6426440	Method for preparing decomposition products from the thermal decomposition of 1,2-dichlorethane The work-up of the gaseous products from the thermal cracking of 1,2-dichloroethane is simplified if the cracking gases are cooled to a temperature range of about 150 to 180° C., only a subsidiary proportion, which comprises all the coke formed, being co...	07/30/2002
6225514	Ring halogenation of aromatic compounds Disclosed is a method of halogenating the ring of an aromatic compound. The aromatic compound is contacted with a halogenating agent in the presence of a heterogeneous catalyst. The catalyst is the calcination reaction product of: (A) 51 to 99 wt % of a s...	05/01/2001
6124512	Ring halogenation of aromatic compounds Disclosed is a method of halogenating the ring of an aromatic compound. The aromatic compound is contacted with a halogenating agent in the presence of a heterogeneous catalyst. The catalyst is the calcination reaction product of: (A) 51 to 99 wt % of a s...	09/26/2000
6117278	Method of making ଱-chloroxylenes Disclosed is a method for making high purity ଱-chloroxylenes. A composition is formed of about 15 to about 80 wt % of a xylene and about 20 to about 85 wt % of a solvent. The solvent can be toluene, ring halogenated toluene, benzotrichloride, ring h...	09/12/2000
6084132	Fluorescent dyes Fluorescent dyes which fluoresce in a variety of colors are produced from substituted and un-substituted 6-ring and 8-ring aromatic diketones by reductive alkylation with alkyl halides in the presence of zinc....	07/04/2000
6028232	Para-chlorination of aromatic compound The present invention relates to a catalyst for preparing para-chloro aromatic compounds by the liquid-phase chlorination method. The catalyst is prepared by loading transition metal salts, rare earth metal salts or a mixture thereof, and alkali metal or ...	02/22/2000
5892138	Process for the preparation of halocumenes A process for the preparation of 4-halocumenes is disclosed wherein the halogen in the halocumene is chlorine, bromine, or iodine, the process including the step of reacting cumene with a halogenating agent in a liquid phase in the presence of a solvent, ...	04/06/1999
5750811	Method of making m-chlorobenzotrifluoride Disclosed is a method of making m-chlorobenzotrifluoride. Benzotrifluoride is reacted with chlorine gas in the presence of about 0.1 to about 5 mole % (based on benzotrifluoride) of a metal chloride which can be FeCl3, SbCl3, or AlCl...	05/12/1998
5710355	Method of making chlorobenzenes Disclosed is a method of making a chlorobenzene having the general formulas ##STR1## where X is Cl or F, and X' is X or CF3. A compound having the formula ##STR2## is sulfonated using at least 2 moles per mole of said compound of a su...	01/20/1998
5679736	Additive fire retardants, process for their preparation and polymeric compositions containing them Novel fire retardant compounds are disclosed, which are poly-halogenated TMPI and MPI compounds containing three or more halogen atoms per molecule. A process for the preparation of these compounds and polymeric compositions containing them are also descr...	10/21/1997
5473084	Chlorination process with high para selectivity A heterogeneous catalytic chlorination process for making chlorinated aromatic compounds with high para-selectivity. Examples of chlorinated aromatic compounds that can be prepared using the process disclosed in the present invention include those compoun...	12/05/1995
5369214	Method for selective dehalogenation of halogenated polyaromatic compounds A method for dehalogenating halogenated polyaromatic compounds is provided wherein the polyaromatic compounds are mixed with a hydrogen donor solvent and a carbon catalyst in predetermined proportions, the mixture is maintained at a predetermined pressure...	11/29/1994
5324874	Process for a decarbromodiphenylethane predominate product having enhanced whiteness This invention relates to an improvement in a process for preparing a product predominant in decabromodiphenylethane. In the improved process the diphenylethane is reacted with bromine in the presence of bromination catalyst in a reaction vessel by feedin...	06/28/1994
5315049	Process for the nuclear chlorination of aromatic hydrocarbons Alkylaromatics are subjected to nuclear chlorination in the liquid phase in the presence of Friedel-Crafts catalyst mixtures comprising compounds of iron and antimony and cocatalysts of the formula (II) ##STR1## wherein the substituents have the mean...	05/24/1994
5292975	Process for decreasing the halogen content of polyhalogenated aromatics When the halogen content of polyhalogenated aromatics is decreased by reaction with monohalogenated and/or non-halogenated aromatics in the gas phase, good yields and significantly improved catalyst service lives are achieved if the reaction is carried ou...	03/08/1994
5210343	Process for the preparation of p-dichlorobenzene Dichlorobenzene having an increased p-content and a greatly reduced m-content is obtained by ring chlorination of benzene or chlorobenzene in the presence of Friedel-Crafts catalysts if the reaction is carried out in the presence of co-catalysts of the fo...	05/11/1993
5157173	Process for 4-chlorobenzotrichloride 4-chlorobenzotrichloride was prepared by the chlorination of p-xylene in the vapor phase at a temperature above about 200° C. in the presence of an activated carbon catalyst and water. An approximately 75 percent calculated yield was obtained at 250° C....	10/20/1992
5157170	Process for reacting polyhalogenated aromatic compounds with monohalogenated or nonhalogenated aromatic compounds The halogen of a polyhalogenated aromatic compound can be transferred to a monohalogenated or nonhalogenated aromatic compound by reaction in the presence of ruthenium as the element or in the form of compounds and if desired with one or more metal compou...	10/20/1992
5149892	Chlorinated benzenes Benzene or a chlorinated benzene feedstock compound represented by the formula C6 H6-x Clx is chlorinated in the rectifying zone of a catalytic distillation reactor to produce a chlorinated benzene product compound represe...	09/22/1992
5124496	Process for decabromodiphenylalkane predominant product This invention relates to a white or at least near white flame retardant product which is predominant in decarbromodiphenylalkane, and which product contains a minor amount of impurities; to a process for preparation of the flame retardant product; to a p...	06/23/1992
5105036	Process for ring-chlorination of aromatic hydrocarbons Aromatic hydrocarbons monosubstituted by straight-chain or branched C1 -C12 -alkyl or by Chd 3-C8 -cycloalkyl can be chlorinated in the aromatic ring in the liquid phase in the presence of Friedel-Crafts catalysts if cycli...	04/14/1992
5053566	Process for the preparation of oligophenyls dihalogenated in the 4,4'-position Oligophenyls dihalogenated in the 4,4'-position, of the formula ##STR1## can be prepared by catalyzed halogenation of oligophenyls of the formula ##STR2## wherein, in the formulae, X1 and X2 independently of one another rep...	10/01/1991
5053565	Process for the preparation of p-chlorotoluene p-Chlorotoluene can be prepared in an improved manner by catalyzed reaction of toluene with a chlorinating agent if a zeolite L containing metal cations is employed as the catalyst and the reaction is carried out in the presence of methylene chloride and/...	10/01/1991
5030778	Decabromodiphenyl alkane process This invention relates to a process for producing a product which is predominant in decabromodiphenyl alkane....	07/09/1991

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Class 570/208 - Catalyst utilized