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Class Information
Number: 585/453
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > By condensation of entire molecules or entire hydrocarbyl moieties thereof, e.g., alkylation, etc. > Attachment to side-chain, e.g., telomerization, etc. > Resulting side-chain has less than four c atoms
Description: Subject matter wherein a methyl substituent of an aromatic ring becomes an ethyl or propyl substituent or in which an ethyl substituent becomes a propyl substituent.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8399726 Reactors and processes for the oxidative coupling of hydrocarbons Mar. 19, 2013
8124035 Process and apparatus for alkylation of aromatic compound with aliphatic mono-olefin compound of 8 to 18 carbon atoms Feb. 28, 2012
7030285 Alkylation process Apr. 18, 2006
6919491 Process for preparing short chain alkyl aromatic compounds Jul. 19, 2005
6414207 Preparation of a basic catalyst avoiding high temperatures Jul. 2, 2002
6403852 Process for producing alkenyl-substituted aromatic hydrocarbons Jun. 11, 2002
6137020 Alkylation process with reduced heavy residue Oct. 24, 2000
6037512 Dismutation and/or transalkylation of alkylaromatic hydrocarbons using a mazzite type zeolite Mar. 14, 2000
6024897 Process for the preparation of benzyl-metal compounds and process for the preparation of 4-phenyl-1-butenes by the use of the same Feb. 15, 2000
6008422 Alkylation process using interbed recycling of cooled reactor effluent Dec. 28, 1999
5659097 Process for producing a monoalkenyl aromatic hydrocarbon compound Aug. 19, 1997
5625102 Method of alkylating the side chain of alkyl-substituted aromatic hydrocarbons Apr. 29, 1997
5608132 Method of alkylating the side chain of alkyl-substituted aromatic hydrocarbons Mar. 4, 1997
5600048 Continuous process for preparing ethylbenzene using liquid phase alkylation and vapor phase transalkylation Feb. 4, 1997
5557024 Process for preparing short chain alkyl aromatic compounds Sep. 17, 1996
5545788 Process for the alkylation of benzene-rich reformate using MCM-49 Aug. 13, 1996
5453554 Process for preparing short chain alkyl aromatic compounds Sep. 26, 1995
5444172 Process for producing a monoalkenyl aromatic hydrocarbon compound Aug. 22, 1995
5436381 Process for producing a monoalkenyl aromatic hydrocarbon compound Jul. 25, 1995
5371310 Process for preparing short chain alkyl aromatic compounds Dec. 6, 1994
5347062 Process for preparing alkyl-substituted aromatic hydrocarbons Sep. 13, 1994
5344806 Process for producing monoalkenyl aromatic hydrocarbon compound Sep. 6, 1994
5334795 Production of ethylbenzene Aug. 2, 1994
5324877 Alkylation and transalkylation processes using a hydrated catalyst Jun. 28, 1994
5321181 Alkylation of organic aromatic compounds Jun. 14, 1994
5227559 Process for preparing alkyl-subtituted aromatic hydrocarbons Jul. 13, 1993
5202515 Process for preparing alkyl-substituted aromatic hydrocarbons Apr. 13, 1993
5196623 Aromatic alkylation process employing zeolite omega catalyst Mar. 23, 1993
5157186 Process for catalytic coupling of an alkene with an aromatic hydrocarbon Oct. 20, 1992
5118896 Aromatic alkylation process using large macropore, small particle size, zeolite catalyst Jun. 2, 1992
5097088 Process for preparing alkyl-substituted aromatic hydrocarbon Mar. 17, 1992
5087784 Aromatic alkylation process and apparatus Feb. 11, 1992
5081323 Liquid phase alkylation or transalkylation process using zeolite beta Jan. 14, 1992
5043507 Process for preparing alkyl-substituted aromatic hydrocarbons Aug. 27, 1991
5015796 Methyl alkylation of toluene using basic zeolite catalysts May. 14, 1991
5004841 Alkylation of aromatic compounds to alkylates enriched in the linear-substituted isomers Apr. 2, 1991
4982035 Coupling process Jan. 1, 1991
4962254 Process for preparing alkyl-substituted aromatic hydrocarbons Oct. 9, 1990
4950831 Coupling process Aug. 21, 1990
4929783 Coupling process May. 29, 1990
4922054 Coupling process May. 1, 1990
4914251 Catalyst system for alkylating alkyl aromatics with olefins, procedure for preparing the catalyst, and procedure for carrying out the alkylating Apr. 3, 1990
4914250 Coupling process Apr. 3, 1990
4891448 Alkylation of polycyclic aromatic compounds to alkylates enriched in the para-substituted isomers Jan. 2, 1990
4709109 Preparation of alkenylaromatics Nov. 24, 1987
4620921 Acid-catalyzed hydrocarbon conversion process Nov. 4, 1986
4620056 Method for producing aromatic hydrocarbons Oct. 28, 1986
4559131 Reactivation of steam-deactivated catalysts Dec. 17, 1985
4530756 Catalysis over activated high silica zeolites Jul. 23, 1985
4511748 Process for producing alkylbenzenes Apr. 16, 1985

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