Synthetic ester lubricant having improved antiwear properties

Details Synthetic ester lubricant having improved antiwear properties Synthetic ester lubricant having improved antiwear properties

1994-12-23

1996-10-01

Howard, Jacqueline V.

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

Lubricants or separants for moving solid surfaces and...

Organic phosphorus compound, wherein the phosphorus is...

252 785, C10M13704

Patent

active

055608493

ABSTRACT:
The antiwear properties of synthetic ester lubricants intended for use at high temperatures (150.degree. C. to 350.degree. C.) are improved by adding to the lubricants a hydrocarbon insoluble, synthetic ester soluble, aryl diphosphate ester composition containing a major amount of an aryl diphosphate ester of the formula: ##STR1## wherein Ar is unsubstituted or alkyl (C.sub.1 -C.sub.12) substituted arylene and R is unsubstituted or alkyl (C.sub.1 -C.sub.12) substituted aryl.

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