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Class Information
Number: 585/474
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > By alkyl or aryl transfer between molecules, e.g., disproportionation, etc. > Plural compounds of different weight become midweight compound, i.e., averaging
Description: Subject matter under 470 wherein two or more compounds fed to the reaction, each compound differing from the other in carbon content, are converted to a hydrocarbon compound of carbon content less than one compound and greater than the other, for example, conversion of a mixture of xylene and benzene to toluene.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8431758 Processes for increasing the overall aromatics and xylenes yield in an aromatics complex Apr. 30, 2013
8148592 Catalytic transalkylation of dialkyl benzenes Apr. 3, 2012
7727490 Aromatic production apparatus Jun. 1, 2010
7405335 Integrated process for producing xylenes and high purity benzene Jul. 29, 2008
7151199 Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Dec. 19, 2006
6573415 Process for the preparation of mono alkyl aromatic compounds Jun. 3, 2003
6207871 High-purity meta-xylene production process Mar. 27, 2001
6137020 Alkylation process with reduced heavy residue Oct. 24, 2000
6008424 C.sub.8 alkylaromatic hydrocarbon production using reversible flow reactive chromatography Dec. 28, 1999
5952536 Aromatics and toluene/trimethylbenzene gas phase transalkylation processes Sep. 14, 1999
5919995 Use of composite catalyst for the dismutation and/or transalkylation of alkylaromatic hydrocarbons Jul. 6, 1999
5877373 C.sub.8 alkylaromatic hydrocarbon production using reversible flow reactive chromatography Mar. 2, 1999
5789641 Process for dismutation and/or transalkylation of alyklaromatic hydrocarbons in the presence of two zeolitic catalysts Aug. 4, 1998
5773678 Use of an omega zeolite based catalyst comprising at least one metal from groups IIa, IVb, IIb or IVa for the dismutation and/or transalkylation of alkylaromatic hydrocarbons Jun. 30, 1998
5744673 Activated zeolite beta and its use for hydrocarbon conversion Apr. 28, 1998
5670704 Selective production of 2,6-dimethylnaphthalene Sep. 23, 1997
5625103 Continuous toluene disproportionation process Apr. 29, 1997
5522984 Modified zeolite beta, processes for preparation and use thereof Jun. 4, 1996
5227556 Turbulent flow process, monoalkyl aromatic production process and reactor for such process Jul. 13, 1993
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
5110778 Boron aluminum and gallium perfluoro alkanesulfonate and resinsulfonate catalysts May. 5, 1992
5087783 Transalkylation of benzene in a moving bed Feb. 11, 1992
5073653 Aromatic alkylation processes Dec. 17, 1991
5030784 Process for converting lower-alkyl substituted aromatic compounds and butadiene to 4-aryl-1-butene or 4-aryl-1-pentene and propylene Jul. 9, 1991
5008480 Process for converting toluene and butadiene to styrene and 1-pentene Apr. 16, 1991
4992608 Method for preparing cumene Feb. 12, 1991
4983274 Shape selective crystalline silicate zeolite containing intermetallic component and use as catalyst in hydrocarbon conversions Jan. 8, 1991
4956511 Toluene disproportionation process Sep. 11, 1990
4950824 Process for the production of 2,6-diisopropylnaphthalene Aug. 21, 1990
4943553 Method of making ethylbiphenyls Jul. 24, 1990
4899009 Method for producing m-benzyltolune Feb. 6, 1990
4891458 Liquid phase alkylation or transalkylation process using zeolite beta Jan. 2, 1990
4885426 Transalkylation of polyaromatics Dec. 5, 1989
4873386 Selective production of 2,6-diethylnaphthalene Oct. 10, 1989
4870222 Alkylation/transalkylation process Sep. 26, 1989
4861935 Catalytic composition and process for the transalkylation of aromatic hydrocarbons Aug. 29, 1989
4857666 Alkylation/transalkylation process Aug. 15, 1989
4835337 Method for producing m-ethyldiphenyls May. 30, 1989
4774377 Alkylation/transalkylation process Sep. 27, 1988
4723048 Process for dismutation and transalkylation of aromatic hydrocarbons in the presence of a zeolite catalyst Feb. 2, 1988
4677240 Hydrocarbon conversion processes over crystalline borosilicate catalysts for pseudocumene recovery Jun. 30, 1987
4665253 Conversion of aromatics over novel catalyst composition May. 12, 1987
4665255 Catalytic conversion of aromatic compounds May. 12, 1987
4629817 Transfer of cycloalkyl groups by transalkylation of aromatics Dec. 16, 1986
4626609 Aromatic compound conversion Dec. 2, 1986
4614760 Low consistency, one-part silicone elastomers Sep. 30, 1986
4613723 Process for effecting hydrocarbon isomerization or alkylation Sep. 23, 1986
4599470 Process for the transalkylation or dealkylation of alkyl aromatic hydrocarbons Jul. 8, 1986

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