| abstract |
The present invention relates to functional fluid compositions containing friction modifiers, and in particular, stable compositions containing friction modifiers with limited solubility and / or compatibility in functional fluids used together. Related to things. In particular, the present invention deals with functional fluids (eg, engine oils) and phosphorus-containing friction modifiers used in internal combustion engines, where the friction modifiers are unstable in the functional fluid composition and otherwise in the composition. It is present in an amount that causes qualitative and / or turbidity. The present invention further provides the use of compatibilizing agents and compositions to increase the solubility and / or compatibility and / or stability of compositions containing the friction modifiers described herein. |