Process for making improved lubricating oils from heavy feedstoc

Details Process for making improved lubricating oils from heavy feedstoc Process for making improved lubricating oils from heavy feedstoc

1986-12-05

1987-12-08

Chaudhuri, Olik

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208120, C10G 1105, C10G 1110, C10G 4564, C10G 4716

Patent

active

047117109

ABSTRACT:
There is disclosed an improved dewaxing process which will operate for longer periods of time involving contacting a feedstock having a 50 volume percent boiling point greater than 900.degree. F. with a crystalline aluminosilicate zeolite having a Constraint Index of from 1 to 12 and a silica-to-alumina ratio of at least 12. The crystalline aluminosilicate zeolite is composited with an inorganic oxide, such as alumina. The composite also containing a hydrogenation metal and the catalyst composite has a maximum diffusion distance of less than 0.025 inch.

REFERENCES:
patent: 3894938 (1975-07-01), Gorring et al.
patent: 3926782 (1975-12-01), Plank et al.
patent: 4263126 (1981-04-01), Rollmann
patent: 4269695 (1981-05-01), Silk et al.
patent: 4419218 (1983-12-01), Angevine et al.
patent: 4441990 (1984-04-01), Huang
patent: 4443554 (1984-04-01), Dessau
patent: 4448671 (1984-05-01), Dessau

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