Mineral oils: processes and products – Products and compositions – Lubricating oils
Patent
1981-07-09
1983-05-31
Gantz, Delbert E.
Mineral oils: processes and products
Products and compositions
Lubricating oils
208211, E10G 4500
Patent
active
043859844
ABSTRACT:
Lubricating base oil compositions having improved stability comprise a major amount of a base oil which has been prepared from a vacuum distillate (VD) or deasphalted oil (DAO) by severe hydrotreating optionally in combination with solvent refining, and a minor amount of an oil which has been prepared from a VD or DAO by a combination of mild hydrotreating and solvent refining.
REFERENCES:
patent: 3902991 (1975-09-01), Christensen et al.
patent: 3904507 (1974-01-01), Mills
Bijwaard Henricus M. J.
Morcus Alphonsus
Caldarola Glenn A.
Gantz Delbert E.
Shell Oil Company
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