Process for preparing dialkylbiphenyl isomer mixtures
US9896393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2015 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | May 2, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a process for producing dialkylbiphenyl compounds, a feed comprising substituted cyclohexylbenzene isomers having the formula (I):wherein each of R1 and R2 is an alkyl group and wherein the feed comprises m % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the feed; is transalkylated with a compound of formula (II):to produce a transalkylation product comprising substituted cyclohexylbenzene isomers having the formula (I) and including n % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the transalkylation product, wherein n<m. At least part of the transalkylation product is then dehydrogenated under conditions effective to convert at least part of the substituted cyclohexylbenzene isomers in the transalkylation product to dialkylbiphenyl compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.