Dihydrocarbyl dithiophosphates

Details Dihydrocarbyl dithiophosphates Dihydrocarbyl dithiophosphates

1997-03-11

1998-04-14

Howard, Jacqueline V.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Heavy metal or aluminum in an organic phosphorus compound...

C10M13706

Patent

active

057390894

ABSTRACT:
A mixed zinc/copper dihydrocarbyl dithiophosphate, e.g. of zinc diethyl-hexyl dithiophosphate and cuprous diethyl-hexyl dithiophosphate, is prepared by reacting a dihydrocarbyl dithiophosphoric acid (DDPA) with a mixture of a basic zinc compound eg ZnO, and a basic copper compound eg Cu.sub.2 O, preferably in the presence of a promoter, eg zinc acetate. The product is a good antioxidant for use in lubricating oils.

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