Additives to lubricating oils having extreme pressure, antiwear

Details Additives to lubricating oils having extreme pressure, antiwear Additives to lubricating oils having extreme pressure, antiwear

1990-10-04

1991-06-04

Willis, Prince E.

Compositions

Electrolytes for electrical devices

558151, C10M13710, C10M13714

Patent

active

050211757

ABSTRACT:
Lubricating oil additives are provided which have extreme pressure, antiwear and antioxidant properties. The additives are dithiophosphorous disymmetric bisulphides of the formula: ##STR1## wherein X and Y represent an oxygen or sulphur atom or a methylene group and R.sub.1 and R.sub.2 and R.sub.3 represent a hydrocarbon radical, a polyether, a polythioether or a hydrogen atom.
The invention also relates to a process for their preparation and to lubricating compositions containing the additives.

REFERENCES:
patent: 3035082 (1962-05-01), Lorenz
patent: 3109770 (1963-11-01), Price et al.
patent: 3144384 (1964-08-01), Aichenegg
patent: 3309428 (1967-03-01), Calhoun et al.
patent: 3742099 (1973-06-01), Colclough et al.
patent: 3763284 (1973-10-01), Phillips

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