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| Number | Title | Issue Date |
| 7683229 | Organic electroluminescent device The present invention relates to novel truxene and isotruxene derivatives, in particular spirotruxene and spiroisotruxene derivatives, and to the use thereof in organic electronic devices, in particular organic electroluminescent devices. ... | 03/23/2010 |
| 7247742 | Recycling polyethylene naphthalate containing materials in a process to produce diesters A process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising directing a liquid phase reaction mixture comprising a low molecular weight alcohol, a naphthalenedicarboxylic acid, a dialkylester of a naphthalenedicarboxylic acid, and a polyethyl... | 07/24/2007 |
| 7241930 | Transalkylation of aromatic fluids A process for making an ethylated polycyclic aromatic compound in a mixed aromatic fluid, the process comprising contacting the mixed aromatic fluid containing a polycyclic aromatic compound and a monocyclic aromatic compound having an ethyl substituent in the prese... | 07/10/2007 |
| 7189887 | Process for removing naphthalene from alkylaromatics A process for the reduction of naphthalene in process streams containing alkylaromatic solvents. Naphthalene is contacted with alkylbenzenes in a distillation column reactor in the presence of transalkylation catalyst to produce alkylnaphthalenes which are concurren... | 03/13/2007 |
| 7151199 | Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One m... | 12/19/2006 |
| 6977320 | Zeolite catalyst and use for hydrocarbon conversion There is provided a zeolite bound zeolite catalyst which can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises a first zeolite and a binder com... | 12/20/2005 |
| 6838585 | Palladium-catalyzed cross-coupling of aryldiazonium salts with arylsilanes A palladium catalyzed cross-coupling of aryldiazonium salts with organosilanes is disclosed. New reactions that are user friendly and environmentally friendly are now possible, including some reactions that could not be achieved using prior methods. The organosilane... | 01/04/2005 |
| 6583307 | Convenient and efficient Suzuki-Miyaura cross-coupling catalyzed by a palladium/diazabutadiene system A Pd(OAc)2 /diazabutadiene system has been developed for the catalytic cross-coupling of aryl halides with arylboronic acids. A combination of the diazabutadiene DAB-Cy (1, N,N'-Dicyclohexyl-1,4-dizabutadiene) and Pd(OAc)2 was found ... | 06/24/2003 |
| 6534690 | Process for the preparation of spherically shaped microcomposites A process for the preparation of at least one spherically shaped porous microcomposite is provided which microcomposite comprises a perfluorinated ion-exchange polymer containing pendant sulfonic and/or carboxylic acid groups entrapped within and highly d... | 03/18/2003 |
| 6489529 | Production of monocycloalkyl aromatic compounds There is described a process for the transalkylation of a polycycloalkyl aromatic compound, particularly the transalkylation of dicyclohexylbenzene to produce monocyclohexylbenzene. The process comprises contacting the polycycloalkyl aromatic compound wit... | 12/03/2002 |
| 6462248 | Method for producing aromatic compounds having alkyl group with at least three carbon atoms Aromatic compounds having an alkyl group with at least 3 carbon atoms are produced in a process comprising at least one of the following steps: (1) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with a... | 10/08/2002 |
| 6388158 | Process for the production of 2,6-dimethylnaphthalene from petrochemical streams Process for the preparation of 2,6-dimethylnaphthalene comprising reacting with at least one aromatic hydrocarbon, in the presence of a zeolitic catalyst, a mixture of naphthalenes comprising a cut obtained by the fractionation of suitable petrochemical s... | 05/14/2002 |
| 6362357 | Use a catalyst system comprising nickel palladium or platinum and imidazoline-2-ylidene or imidazolidine-2-ylidene in stille coupling reactions This invention provides a process for conducting Stille coupling reactions. The processes of the present invention make use of N-heterocyclic carbenes as ancillary ligands in Stille couplings of aryl halides. A Stille coupling can be carried out by mixing... | 03/26/2002 |
| 6147270 | Process for the preparation of 2,6-dimethylnaphthalene using a MTW zeolitic catalyst A highly selective process is described for preparing 2,6-dimethylnaphthalene which comprises reacting a naphthalene hydrocarbon selected from naphthalene, methylnaphthalenes, dimethylnaphthalenes, trimethylnaphthalenes, polymethylnaphthalenes or their mi... | 11/14/2000 |
| 5773679 | Performance enhancement of zeolite catalysts with water cofeed A process for shape-selective hydrocarbon conversion that involves initially contacting a feed stream which includes an alkylaromatic compound and a co-feed of water, under conversion conditions with a catalytic molecular sieve. Preferably, the catalytic ... | 06/30/1998 |
| 5763719 | Thermally stable fullerene derivatives and process for producing the same A fullerene derivative of the formula I ##STR1## where the symbols and indices have the following meanings: F is a fullerene radical of the formula (C20+2m), where m is a number from 1 to 50 R1 to R8 are identical or ... | 06/09/1998 |
| 5744670 | Process for preparing dialkylnaphthalene A process for producing alkylnaphthalene from a feedstock comprising isomers of dialkylnaphthalene and naphthalene by contacting the feedstock with a catalyst composition, in which the process comprising transalkylation between isomers of dialkylnaphthale... | 04/28/1998 |
| 5670704 | Selective production of 2,6-dimethylnaphthalene A method for the highly selective production of 2,6-dimethlynaphthalene by the transmethylation of naphthalene or 2-methylnaphthalene by the use of a specific acid catalyst and a highly regeospecific methylating agent.... | 09/23/1997 |
| 5563311 | Process for preparing short chain alkyl aromatic compounds Relatively short chain alkyl aromatic compounds are prepared by alkylating or transalkylating an alkylatable aromatic compound with a relatively short chain alkylating or transalkylating agent under sufficient reaction conditions in the presence of cataly... | 10/08/1996 |
| 5380425 | Over alkylation and catalytic cracking for benzene conversion A process for producing a low benzene content gasoline is disclosed. Catalytic reforming produces a benzene rich reformate which is fractionated to yield a benzene rich C6 fraction which is then over-alkylated, preferably with C2/C3 olefins from an FCC, t... | 01/10/1995 |
| 5329059 | Alkylaromatic disproportionation A process is provided for disproportionation of an alkylaromatic compound, alkyl being from 1 to about 6 carbon atoms, e.g., toluene and methylnaphthalene, comprising contacting said compound with catalyst comprising an active form of synthetic porous cry... | 07/12/1994 |
| 5321182 | Process for preparing 2-alkyl-6-ethylnaphthalene 2-Alkyl-6-ethylnaphthalene is prepared selectively and efficiently by the reaction of at least one kind of feed naphthalene selected from naphthalene and 2-alkylnaphthalenes with polyethylbenzenes at 50° to 400° C. in the presence of a solid acid cataly... | 06/14/1994 |
| 5300722 | Oxygen-free aromatic alkylation process In an aromatic alkylation process, an aromatic hydrocarbon is contacted with an alkylating agent in a reactor vessel in the absence of oxygen in the presence of a silica-containing molecular sieve catalyst under liquid phase alkylation conditions to recov... | 04/05/1994 |
| 5210355 | Selective production of 2,6-methylethylnaphthalene A method for the highly selective production of 2,6-methylethylnaphthalene involving the use of a specific acid catalyst and a highly regeospecific ethylating agent.... | 05/11/1993 |
| 5177286 | Selective production of a p-alkyltoluene or 4,4'-alkylmethylbiphenyl A method for the highly selective production of a p-alkyltoluene or 4,4'-alkylmethylbiphenyl involving the use of a specific Lewis acid catalyst and a highly regeospecific methylating agent.... | 01/05/1993 |
| 5171917 | Selective production of a p-alkylethylbenzene or 4,4'-alkylethylbiphenyl A method for the highly selective production of a p-alkylethylbenzene or 4,4'-alkylethylbiphenyl involving the use of a Lewis acid or Bronsted acid alkylation catalyst and a highly regiospecific ethylating agent.... | 12/15/1992 |
| 4973784 | Process for reducing the durene content of effluent resulting from the catalytic conversion of C1 -C4 oxygenates to gasoline A reduction in the durene content of an effluent resulting from the zeolite-catalyzed conversion of a C1 -C4 oxygenate such as methanol to gasoline is disclosed wherein either the total effluent from said conversion or a bottoms frac... | 11/27/1990 |
| 4943553 | Method of making ethylbiphenyls This invention relates to a method of making ethylbiphenyls by the reaction of biphenyl with polyethylbenzenes or with ethylene and polyethylbenzenes in the presence of a solid acid catalyst and offers advantages of industrial significance such as absence... | 07/24/1990 |
| 4902841 | Method for producing electrical insulating oil composition A method for producing an electrical insulating oil composition composed of benzyltoluene and ditolymethane. The composition is excellent in low-temperature characteristics and contains substantially no chlorine. The method comprises the steps of reacting... | 02/20/1990 |
| 4899007 | Aromatic conversion reactions with zeolitic catalyst composition of improved shape selectivity There are provided aromatic conversion reactions for preparation of dialkyl benzenes, such as xylene and ethyltoluene, of enhanced para isomer content with a zeolitic catalyst composition of improved shape selectivity. The catalysts comprise certain zeoli... | 02/06/1990 |
| 4899009 | Method for producing m-benzyltolune A method for producing m-benzyltoluene with a high yield and excellent selectivity without producing undesirable heavier by-products. The method is characterized in that toluene and diphenylmethane are allowed to react at a reaction temperature in the ran... | 02/06/1990 |
| 4873386 | Selective production of 2,6-diethylnaphthalene A method for the highly selective production of 2,6-diethylnaphthalene involving the use of a specific Lewis acid catalyst and a highly regiospecific ethylating agent.... | 10/10/1989 |
| 4835337 | Method for producing m-ethyldiphenyls A method for producing efficiently a highly pure 1-(m-ethylphenyl)-1-phenylethane or m-ethylphenylphenylmethane which are used as the starting materials for preparing medicines and other organic compounds. The method comprises the step of reacting a diary... | 05/30/1989 |
| 4642730 | Electrical insulating oil and oil-filled electrical appliances An improved electrical insulating oil and oil-filled electrical appliances impregnated therewith. The electrical insulating oil can be produced inexpensively but has excellent electrical characteristics and it comprises a fraction having boiling points in... | 02/10/1987 |
| 4629817 | Transfer of cycloalkyl groups by transalkylation of aromatics There is provided a process for transferring cycloalkyl groups from donor to acceptor aromatic molecules. The process involves the use of a Bronsted acid catalyst such as trifluoromethanesulfonic acid.... | 12/16/1986 |
| 4577049 | Alkylation of durene utilizing high boiling condensed polyaromatic compounds A process is disclosed for dealkylating durene under elevated temperatures and pressures with a polynuclear aromatic compound. The dealkylation is carried out in the presence of a carbon-containing molecular sieve.... | 03/18/1986 |
| 4508836 | Catalytic conversion process for aromatic feedstocks with hydrogen regeneration of coke-selectivated zeolite catalyst In the process of converting an aromatic feedstock to an alkyl-substituted mono-nuclear aromatic product by contacting the feedstock with a coke-selectivated ZSM-5 type catalyst at elevated temperature under conversion process coking conditions to produce... | 04/02/1985 |
| 4400567 | Oxidative coupling of aromatic methyl groups Highly selective oxidative coupling of aromatic methyl groups, such as coupling toluene to DPE, is effected under mild, liquid phase conditions with a peroxodisulfate without expensive metal ion catalysts, in presence of substantial amounts, preferably eq... | 08/23/1983 |
| 4365103 | Process for the preparation of bis(1-phenylethenyl) compounds A 1,1-diphenylethane and an aromatic compound such as benzene are reacted in the presence of a Friedel-Craft's catalyst to provide a compound having two 1,1-diaromatic substituted ethane groups, dehydrogenation provides a bis(1-phenylethenyl)aromatic comp... | 12/21/1982 |
| 4288646 | Regioselective preparation of ଲ-isopropylnaphthalene over superacidic solid or supported perfluorinated sulfonic acid catalysts A process for the production of ଲ-isopropylnaphthalene in high regioselectivity (90-98%) by alkylation of naphthalene over solid or supported superacid catalysts, such as a perfluorinated alkanesulfonic acid of four to eighteen carbon atoms (C4... | 09/08/1981 |
