Process for the production of 2,6-diisopropylnaphthalene

Details Process for the production of 2,6-diisopropylnaphthalene Process for the production of 2,6-diisopropylnaphthalene

1989-08-02

1990-08-21

Sneed, H. M.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

585323, 585449, 585450, 585456, 585466, 585474, 585467, 585475, 585828, C07C 400, C07C 264, C07C 266, C07C 712

Patent

active

049508245

ABSTRACT:
A process for the production of 2,6-diisopropylnaphthalene is disclosed wherein an isopropylation reaction mixture containing isopropylated naphthalenes is subjected to transalkylation with a triisopropylnaphthalene-containing mixture to obtain a mixture containing mono-, di- and tri-isopropylnaphthalenes which is then separated into a first fraction containing monisopropylnaphthalenes, a second fraction containing diisopropylnaphthalenes and a third fraction containing triisopropylnaphthalenes. The first and third fractions are recycled to the above system, while the second fraction is subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene. The second fraction from which 2,6-diisopropylnaphthalene has been removed is subjected to transalkylation with naphthalene to obtain a monoisopropylnaphthalene-rich mixture which is to be fed to the isopropylation step.

REFERENCES:
patent: 2592587 (1952-04-01), Nickels
patent: 2985589 (1961-05-01), Broughton et al.

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