Process for the production of high VI lube base stocks

Details Process for the production of high VI lube base stocks Process for the production of high VI lube base stocks

1988-11-07

1991-02-05

Pal, Asok

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

Including alkylation to produce branched-chain paraffin

585732, 585722, 585723, C07C 258

Patent

active

049907131

ABSTRACT:
High viscosity index, low pour point lubricants are produced by reacting an iso-paraffinic component, preferably with significant mono- and di-methyl chain branching, with an olefinic reactant in the presence of a free radical generator such as an organic peroxide, preferably ditertiary butyl peroxide. The isoparaffinic reactant is preferably obtained by the isomerization of a waxy feed such as slack wax over a zeolite beta isomerization catalyst, preferably Pt/zeolite beta. The olefinic reactant is preferably a distillate fraction produced by the oligomerization of low molecular weight olefins e.g., C.sub.3 to C.sub.5 olefins, produced by oligomerization over an intermediate pore size zeolite oligomerization catalyst such as ZSM-5.

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patent: 4140619 (1979-02-01), van der Wiel
patent: 4301315 (1981-11-01), Hasket et al.
patent: 4419220 (1983-12-01), LaPierre
patent: 4594172 (1986-06-01), Sie
patent: 4695364 (1987-09-01), Graziani
patent: 4720600 (1988-01-01), Beech

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