Exxonmobil Chemical Patents Inc.

Lorenzo C DeCaul

Jihad Mohammed Dakka

Neeraj Sangar

Michael Salciccioli

Terry Eugene Helton

Stephen Zushma

Edmund John Mozeleski

Christine A Costello

Victor DeFlorio

Ali A Kheir

Pierre Osterrieth

James Richardson Lattner

Kun Wang

John Scott Buchanan

Allen David Godwin

Catherine Anne Faler

Stephen Harold Brown

Keith Holroyd Kuechler

Gary David Mohr

Scott Jeffrey Weigel

Chuansheng Bai

Rohit Vijay

James C Vartuli

Teng Xu

Sabato Miseo

Didier A Naert

Diana S Smirnova

Michel A Daage

Stephen John McCarthy

Helge Jaensch

Mayank Shekhar

Brett Thomas Loveless

Etienne Mazoyer

Emiel De Smit

Larry Lee Iaccino

Jose G Santiesteban

Doron Levin

Kenneth Ray Clem

Tan-Jen Chen

Jane C Cheng

Jon E Stanat

Christine Nicole Elia

Francisco Manuel Benitez

Mobae Afeworki

Alan Anthony Galuska

Sumathy Raman

Michael P Lanci

Juan D Henao

J Scott Buchanan

Xiaobo Zheng

Steven Webster Levine

Michele L Paccagnini

Wei Tang

Ranjita Ghose

Aaron B Pavlish

Jenna L Wallace

Gregory J De Martin

Allen D Goodwin

Diana Smimova

Disclosed herein are processes for producing neopentane. The processes generally relate to demethylating isooctane to produce neopentane. The isooctane may be provided by the alkylation of isobutane with butylenes.

Production of neopentane

Disclosed herein are processes for producing neopentane. The processes generally relate to demethylating diisobutylene to produce neopentane. The diisobutylene may be provided by the dimerization of isobutylene.

Disclosed herein are processes for producing neopentane. The processes generally relate to demethylating neohexane and/or neoheptane to produce neopentane. The neohexane and/or neoheptane may be provided by the isomerization of C-Cparaffins.

A process is described for converting at least one isomer of a dialkyl-substituted biphenyl compound, such as at least one 2,X' dialkylbiphenyl isomer (where X&#x2032; is 2&#x2032;, 3&#x2032; and/or 4&#x2032;), into at least one different isomer, 3,3&#x2032;, 3,4&#x2032; and/or 4,4&#x2032; dialkylbiphenyl isomer. The process comprises contacting a feed comprising the dialkyl-substituted biphenyl compound isomer with an acid catalyst under isomerization conditions.

Production and use of dialkylbiphenyl isomer mixtures

Provided are compounds of the following: wherein Ris a saturated or unsaturated cyclic hydrocarbon optionally substituted with an alkyl and/or an OXO-ester, and Ris a Cto Chydrocarbyl, preferably the residue of a Cto COXO-alcohol. Also provided are processes for making the compounds and plasticized polymer compositions containing said compounds.

Alkyl aromatic hydroalkylation for the production of plasticizers

Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.

Production of aromatics from methanol and co-feeds

In a process for dehydrogenating cyclohexylbenzene and/or alkyl-substituted cyclohexylbenzene compounds, a dehydrogenation catalyst comprising at least one Group 10 metal compound on a support is heated in the presence of hydrogen from a first temperature from 0&#xb0; C. to 200&#xb0; C. to a second, higher temperature from 60&#xb0; C. to 500&#xb0; C. at a ramp rate no more than 100&#xb0; C./hour. The dehydrogenation catalyst is contacted with hydrogen at the second temperature for a time from 3 to 300 hours to produce an activated dehydrogenation catalyst. A feed comprising cyclohexylbenzene and/or an alkyl-substituted cyclohexylbenzene compound is then contacted with hydrogen in the presence of the activated dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising biphenyl and/or an alkyl-substituted biphenyl compound.

Activation of dehydrogenation catalysts

This invention relates to process for producing biphenyl esters, the process comprising:

Hydroalkylation catalyst and process for use thereof

In a process for producing biphenyl compounds, a Caromatic hydrocarbon may be hydroalkylated to give Ccycloalkylaromatic compounds and byproduct Csaturated cyclic hydrocarbons. The Ccycloalkylaromatic compounds are dehydrogenated to provide the biphenyl compounds. The Csaturated cyclic hydrocarbons may also be dehydrogenated back to the corresponding Caromatic hydrocarbon, which may be recycled to provide additional feed. Although both the intermediate Ccycloalkylaromatic compounds and the byproduct Csaturated cyclic hydrocarbons should be dehydrogenated, at least part of the dehydrogenation of the Csaturated cyclic hydrocarbons should take place in the absence of Cor greater hydrocarbons. Thus, dehydrogenation of the byproduct Csaturated cyclic hydrocarbons should take place at least in part separately from dehydrogenation of the Ccycloalkylaromatic compounds.

Production of biphenyl compounds

In a process for producing methyl-substituted biphenyl compounds, a feed comprising at least one aromatic hydrocarbon selected from the group consisting of toluene, xylene and mixtures thereof is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes and/or (dimethylcyclohexyl)xylenes. At least part of the hydroalkylation reaction product is then dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of methyl-substituted biphenyl compounds.

Methyl-substituted biphenyl compounds, their production and their use in the manufacture of plasticizers

A composition is described comprising a mixture of (methylcyclohexyl)toluene isomers having the following formula: wherein the mixture comprises at least 50 wt % in total of the 3,3, 3,4 4,3 and 4,4-isomers of (methylcyclohexyl)toluene.

(Methylcyclohexyl)toluene isomer mixtures,their production and their use in the manufacture of plasticizers

A catalyst composition comprises (i) a support; (ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and (iii) tin or a tin compound, wherein the tin is present in an amount of 0.01 wt % to about 0.25 wt %, the wt % based upon the total weight of the catalyst composition.

Dehydrogenation catalyst and process

In a process for producing methyl-substituted biphenyl compounds, a feed comprising at least one aromatic hydrocarbon selected from the group consisting of toluene, xylene and mixtures thereof is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes and/or (dimethylcyclohexyl)xylenes together with dialkylated C+ compounds. At least part of the dialkylated C+ compounds is then removed from the hydroalkylation reaction product to produce a dehydrogenation feed; and at least part of the dehydrogenation feed is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of methyl-substituted biphenyl compounds.

In a process for producing 3,4' and/or 4,4&#x2032; dimethyl-substituted biphenyl compounds, a feed comprising toluene is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes. At least part of the hydroalkylation reaction product is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of dimethyl-substituted biphenyl isomers. The dehydrogenation reaction product is then separated into at least a first stream containing at least 50% of 3,4&#x2032; and 4,4&#x2032; dimethylbiphenyl isomers by weight of the first stream and at least one second stream comprising one or more 2,x&#x2032; (where x&#x2032; is 2&#x2032;, 3&#x2032;, or 4&#x2032;) and 3,3&#x2032; dimethylbiphenyl isomers.

Production and use of 3,4' and 4,4'-dimethylbiphenyl isomers

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Langhorne, PA, United States of America

Lorenzo C DeCaul