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Class Information
Number: 585/449
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > By condensation of entire molecules or entire hydrocarbyl moieties thereof, e.g., alkylation, etc. > Plural alkylation stages
Description: Subject matter in which the effluent from an aromatic alkylation reaction is sent to another aromatic alkylation reaction.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7176340 Continuous process for the alkylation of hydrocarbons Feb. 13, 2007
RE39222 Process for preparing 2,6-dialkylnaphthalene Aug. 1, 2006
7074978 Process for the production of alkylbenzene Jul. 11, 2006
7071369 Process for the production of alkylbenzene with ethane stripping Jul. 4, 2006
7060863 Multistage reaction system with interstage sparger systems Jun. 13, 2006
6995295 Alkylaromatics production Feb. 7, 2006
6979394 Alkylaromatic process with catalyst regeneration Dec. 27, 2005
6762334 Alkylaromatic process with removal of aromatic byproducts using efficient distillation Jul. 13, 2004
6740789 Alkylaromatic process with catalyst regeneration May. 25, 2004
6642426 Fluid-bed aromatics alkylation with staged injection of alkylating agents Nov. 4, 2003
6642425 Reactive distillation process for the alkylation of aromatic hydrocarbons Nov. 4, 2003
6627781 Process for producing, jointly or otherwise, monoalkyl aromatic compounds, dialkyl aromatic compounds and trialkyl aromatic compounds Sep. 30, 2003
6620387 Catalytic distillation reactor in combination with a multibed catalytic reactor having individual feed inlets Sep. 16, 2003
6555722 Countercurrent alkylation process Apr. 29, 2003
6521804 Process for producing phenyl-alkanes using dual zones Feb. 18, 2003
6486371 Multistage reaction system with interstage sparger systems Nov. 26, 2002
6417420 Alkylaromatic process with removal of aromatic byproducts using efficient distillation Jul. 9, 2002
6376729 Multi-phase alkylation process Apr. 23, 2002
6350930 Method for producing aromatic compound Feb. 26, 2002
6339179 Production of alkyl aromatics by passing transalkylation effluent to alkylation zone and to product recovery zone Jan. 15, 2002
6281399 Production of isopropyl aromatics by passing portions of transalkylation effluent to a multi-bed alkylation zone Aug. 28, 2001
6268542 Multi-phase alkylation-transalkylation process Jul. 31, 2001
6232515 Production of ethyl aromatics by passing portions of transalkylation effluent to a multi-bed alkylation zone May. 15, 2001
6169219 Alkylation of aromatics with removal of polymeric byproducts Jan. 2, 2001
6166281 Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites Dec. 26, 2000
6156949 Selective pseudocumene production by xylene methylation Dec. 5, 2000
6150578 Recovery process for wet aromatic alkylation and dry aromatic transalkylation Nov. 21, 2000
6133492 Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites Oct. 17, 2000
6121501 Process for preparing 2,6-dialkylnaphthalene Sep. 19, 2000
6096935 Production of alkyl aromatics by passing transalkylation effluent to alkylation zone Aug. 1, 2000
6090991 Gas phase alkylation method and catalyst Jul. 18, 2000
6069285 Alkylaromatic process using a solid alkylation catalyst and a benzene rectifier May. 30, 2000
6063976 Process to alkylate an aromatic with a dilute stream comprising propylene and ethylene May. 16, 2000
6057485 Gas phase alkylation with split load of catalyst May. 2, 2000
6031144 Process for reducing the residual olefin content of an alkylation reaction product Feb. 29, 2000
6018086 Process for preparing 2,6-dialkylnaphthalene Jan. 25, 2000
6013848 Conversion of heavy polyalkylaromatic compounds Jan. 11, 2000
6011190 Process for preparing dialkylnaphthalene Jan. 4, 2000
6008422 Alkylation process using interbed recycling of cooled reactor effluent Dec. 28, 1999
6005152 Process for the preparation of monoalkylated aromatic compounds Dec. 21, 1999
5998684 Recovery process for wet aromatic alkylation and dry aromatic transalkylation Dec. 7, 1999
5998687 Ethylbenzene process using stacked reactor loading of beta and Y zeolites Dec. 7, 1999
5986155 Catalytic process for making high reactivity alkylating agents and products resulting therefrom Nov. 16, 1999
5962758 Process of producing ethylbenzene using alkylation and transalkylation with propylbenzene destruction Oct. 5, 1999
5955642 Gas phase alkylation-liquid transalkylation process Sep. 21, 1999
5902917 Alkylaromatics production May. 11, 1999
5900518 Heat integration in alkylation/transalkylation process May. 4, 1999
5877384 Apparatus and process for separating reaction effluent in the manufacture of cumene Mar. 2, 1999
5849965 Multistage alkylation process Dec. 15, 1998
5847255 Gas phase alkylation-liquid phase transalkylation process Dec. 8, 1998

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