Method of separating 2,6-diisopropylnaphthalene from a mixture containing diisopropylnaphthalene isomers
US4992622A · kind A · utility
1Cited by
7References
16Claims
0Family size
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Key dates
| Filing date | Aug 2, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Aug 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of separating 2,6-diisopropylnaphthalene from a mixture containing 2,6-diisopropylnaphthalene and structural isomers thereof including the 2,7-isomer is disclosed, wherein the mixture is first subjected to a selective adsorption and desorption treatment using a zeolite absorbent capable of adsorbing the 2,7-isomer to obtain a first extract containing the sorbed 2,7-isomer and a first raffinate containing non-sorbed isomers including the 2,6-isomer, the 2,6-isomer being thereafter separated from the first raffinate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.