Anti-wear lubricating oil compositions

Details Anti-wear lubricating oil compositions Anti-wear lubricating oil compositions

1977-05-09

1978-06-13

Sneed, Helen M. S.

Compositions

Electrolytes for electrical devices

252 327R, C10M 148, C10M 342, C10M 524, C10M 746

Patent

active

040948005

ABSTRACT:
Disclosed are lubricating oil compositions having improved anti-wear properties, comprising a major portion of a lubricating oil and an effective amount of an oil soluble additive combination comprising a basic zinc alkyl dithiophosphate having alkyl groups made from primary alcohols containing from about 6 to about 20 carbon atoms and a non-acidic lubricating oil anti-rust compound comprising a succinic anhydride substituted with an alkenyl group which has about 8 to about 50 carbon atoms reacted with an alcohol, an amine, or mixtures thereof.
The zinc dithiophosphate is generally made from primary alcohol containing about 7 to about 12 carbon atoms and generally has a zinc to phosphorous ratio of about 1.15-1.5:1.

REFERENCES:
patent: 2794780 (1957-06-01), Wiptrach et al.
patent: 3086939 (1963-04-01), Tichelaar et al.
patent: 3255108 (1966-06-01), Wiese
patent: 3347790 (1967-10-01), Meinhardt
patent: 3385790 (1968-05-01), Davies et al.
patent: 3390082 (1968-06-01), Le Suer et al.
patent: 3562159 (1971-02-01), Mastin
patent: 3923669 (1975-12-01), Newingham et al.
patent: 3933659 (1976-01-01), Lyle et al.

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