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AssigneeExxon Chemical Patents Inc.
InventorsRicardo A. Bloch, Roger K. Nibert, Jack Ryer, Raymond F. Watts
Estimating the term…
A method of controlling the friction coefficients and improving the friction durability of an oleaginous compositions, such as an ATF, comprising adding to the composition a combination of competing additives comprising (1) at least one friction modifying chemical additive having a polar head group and a friction reducing substituent group and (2) at least one non-friction reducing additive and/or friction increasing additive having the same polar group as the friction modifying chemical additive, but having a substituent group which has no material friction raising or lowering effect (non-friction reducing additive) or a substituent group which increases the friction coefficients (friction increasing additive) of the composition.
A method of improving the friction durability of an oleaginous composition, which comprises:
An oleaginous composition comprising a major amount of an oil of lubricating viscosity and an amount effective for controlling the friction coefficients and the friction durability of said composition comprising (a) a first chemical additive comprising a polar head group and a friction reducing substituent group, wherein said polar head group contains a carboxyl moiety, and (b) at least one other chemical additive having the same polar head group as said first chemical additive but having a substituent group selected from non-friction reducing substituent groups and friction increasing substituent groups.
An additive concentrate for improving the friction durability of an oleaginous composition which comprises (a) a first chemical additive comprising a polar head group and a friction reducing substituent group, wherein said polar head group contains a carboxyl moiety, and (b) at least one other chemical additive having the same polar head group as said first chemical additive but having a substituent group selected from non-friction reducing substituent groups and friction increasing substituent groups.
Dependencies are inferred from the claim text.