Viscosity index improvement in dewaxed lube basestock by partial

Details Viscosity index improvement in dewaxed lube basestock by partial Viscosity index improvement in dewaxed lube basestock by partial

1983-07-11

1986-01-14

Gantz, D. E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 97, 208216R, C10G 6512, C10G 6704

Patent

active

045644403

ABSTRACT:
Partial desulfurization in the range of about 30-90% during hydrotreating of a dewaxed lube oil basestock provides an increase in viscosity index of up to five numbers with less than about 5 wt. % yield loss, a consequence of the desulfurized compounds staying in the lube boiling range.

REFERENCES:
patent: 3702817 (1972-11-01), Cummins et al.
patent: 3894938 (1975-07-01), Gorring et al.
patent: 3989617 (1976-11-01), Yan
patent: 4181598 (1980-01-01), Gillespie et al.
patent: 4259170 (1981-03-01), Graham et al.

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