反应详情

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.

1. additioncontaining mixture
2. customto obtain a mixture
3. customis then separated into a first fraction
4. additioncontaining monisopropylnaphthalenes
5. additiona second fraction containing diisopropylnaphthalenes
6. additiona third fraction containing triisopropylnaphthalenes
7. customis subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene
8. customThe second fraction from which 2,6-diisopropylnaphthalene has been removed