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Production and use of 3,4' and 4,4'-dimethylbiphenyl isomers
US9464166B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9464166-B2 |
| Application number | US-201414480363-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2014 |
| Priority date | Jan 28, 2013 |
| Publication date | Oct 11, 2016 |
| Grant date | Oct 11, 2016 |
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Abstract
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In a process for producing 3,4′ and/or 4,4′ 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′ and 4,4′ dimethylbiphenyl isomers by weight of the first stream and at least one second stream comprising one or more 2,x′ (where x′ is 2′, 3′, or 4′) and 3,3′ dimethylbiphenyl isomers.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for producing 3,4′- and/or 4,4′-dimethyl-substituted biphenyl compounds, the process comprising: (a1) contacting a feed comprising toluene with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes; (b1) dehydrogenating at least part of the hydroalkylation reaction product in the presence of a dehydrogenation catalyst under condit…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08G63/185Primary
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US9464166B2 cover?
- In a process for producing 3,4′ and/or 4,4′ 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 dehydrog…
- Who is the assignee on this patent?
- Exxonmobil Chemical Patents Inc
- What technology area does this patent fall under?
- Primary CPC classification C08G63/185. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 11 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).