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Class Information
Number: 585/471
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > By alkyl or aryl transfer between molecules, e.g., disproportionation, etc. > Product is polycyclic, of increased side-chain length, or a specific position polyalkyl benzene isomer
Description: Subject matter wherein the product has more than one ring or in which the alkyl group removed from one hydrocarbon molecule is attached to a side-chain already on a ring of another molecule to give an aromatic product with a side-chain containing more carbon atoms than a feedstock side-chain, or in which the process is directed to maximize the production of a claimed isomer having alkyl groups in specific positions on a benzene ring, e.g., mesitylene, metaxylene, etc.










Sub-classes under this class:

Class Number Class Name Patents
585/472 Using al or b halide catalyst 22


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8502008 Process and apparatus for para-xylene production Aug. 6, 2013
8293963 Process for the crystallization separation of P-xylene Oct. 23, 2012
8288604 Method of rapid methylation, kit for preparing PET tracer and method of producing PET tracer Oct. 16, 2012
8283510 Process and apparatus for para-xylene production Oct. 9, 2012
7910783 Preparation of substituted bridged indenyl and related ligands Mar. 22, 2011
7902414 Para-xylene production process employing in-situ catalyst selectivation Mar. 8, 2011
7838711 Process for continuous ruthenium-catalysed metathesis Nov. 23, 2010
7737313 Catalyst composition, the method of manufacturing, and the process of using thereof in hydrocarbon conversions Jun. 15, 2010
7727490 Aromatic production apparatus Jun. 1, 2010
7683229 Organic electroluminescent device Mar. 23, 2010
7241930 Transalkylation of aromatic fluids Jul. 10, 2007
7151199 Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Dec. 19, 2006
6838585 Palladium-catalyzed cross-coupling of aryldiazonium salts with arylsilanes Jan. 4, 2005
6583307 Convenient and efficient Suzuki-Miyaura cross-coupling catalyzed by a palladium/diazabutadiene system Jun. 24, 2003
6534690 Process for the preparation of spherically shaped microcomposites Mar. 18, 2003
6489529 Production of monocycloalkyl aromatic compounds Dec. 3, 2002
6462248 Method for producing aromatic compounds having alkyl group with at least three carbon atoms Oct. 8, 2002
6388158 Process for the production of 2,6-dimethylnaphthalene from petrochemical streams May. 14, 2002
6362357 Use a catalyst system comprising nickel palladium or platinum and imidazoline-2-ylidene or imidazolidine-2-ylidene in stille coupling reactions Mar. 26, 2002
6147270 Process for the preparation of 2,6-dimethylnaphthalene using a MTW zeolitic catalyst Nov. 14, 2000
5773679 Performance enhancement of zeolite catalysts with water cofeed Jun. 30, 1998
5763719 Thermally stable fullerene derivatives and process for producing the same Jun. 9, 1998
5744670 Process for preparing dialkylnaphthalene Apr. 28, 1998
5670704 Selective production of 2,6-dimethylnaphthalene Sep. 23, 1997
5563311 Process for preparing short chain alkyl aromatic compounds Oct. 8, 1996
5380425 Over alkylation and catalytic cracking for benzene conversion Jan. 10, 1995
5329059 Alkylaromatic disproportionation Jul. 12, 1994
5321182 Process for preparing 2-alkyl-6-ethylnaphthalene Jun. 14, 1994
5300722 Oxygen-free aromatic alkylation process Apr. 5, 1994
5210355 Selective production of 2,6-methylethylnaphthalene May. 11, 1993
5177286 Selective production of a p-alkyltoluene or 4,4'-alkylmethylbiphenyl Jan. 5, 1993
5171917 Selective production of a p-alkylethylbenzene or 4,4'-alkylethylbiphenyl Dec. 15, 1992
4973784 Process for reducing the durene content of effluent resulting from the catalytic conversion of C.sub.1 -C.sub.4 oxygenates to gasoline Nov. 27, 1990
4943553 Method of making ethylbiphenyls Jul. 24, 1990
4902841 Method for producing electrical insulating oil composition Feb. 20, 1990
4899007 Aromatic conversion reactions with zeolitic catalyst composition of improved shape selectivity Feb. 6, 1990
4899009 Method for producing m-benzyltolune Feb. 6, 1990
4873386 Selective production of 2,6-diethylnaphthalene Oct. 10, 1989
4835337 Method for producing m-ethyldiphenyls May. 30, 1989
4642730 Electrical insulating oil and oil-filled electrical appliances Feb. 10, 1987
4629817 Transfer of cycloalkyl groups by transalkylation of aromatics Dec. 16, 1986
4577049 Alkylation of durene utilizing high boiling condensed polyaromatic compounds Mar. 18, 1986
4508836 Catalytic conversion process for aromatic feedstocks with hydrogen regeneration of coke-selectivated zeolite catalyst Apr. 2, 1985
4400567 Oxidative coupling of aromatic methyl groups Aug. 23, 1983
4365103 Process for the preparation of bis(1-phenylethenyl) compounds Dec. 21, 1982
4288646 Regioselective preparation of .beta.-isopropylnaphthalene over superacidic solid or supported perfluorinated sulfonic acid catalysts Sep. 8, 1981
4264473 Method of catalyst manufacture, and catalyst made by said method Apr. 28, 1981
4162214 Method of preparing benzene and xylenes Jul. 24, 1979
4128592 Selective production of para dialkyl benzene Dec. 5, 1978
4127616 Process for selective production of para dialkyl substituted benzenes Nov. 28, 1978

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