Product

Details Product Product

1970-06-29

1976-03-02

Narcavage, Joseph A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252 515A, C07D20720

Patent

active

039418081

ABSTRACT:
The present invention provides oil-soluble, polymeric surface-active agents which are polyimide-amine salts of styrene-maleic anhydride copolymers having pendant tertiary amine groups containing a salt-forming tertiary nitrogen atom neutralized to the extent of at least about 75 percent with mono-carboxylic acids for instance having an aliphatic chain of at least about 8 carbon atoms. The salts of this invention exhibit the property of lowering the surface tension at oil-water interfaces. The polyimide-amine salts can also contain mixed imides resulting from the reaction of dialkylaminoalkylamines and monoalkyl amines or mixed imide-amides resulting from the reaction of dialkylaminoalkylamines and dialkylamines. This invention also provides oil compositions containing mineral oil and the oil-soluble, polymeric surface-active polyimide-amine salts, with or without water. These compositions are useful, for instance, as hydraulic fluids, jet fuels, electrolyte-containing oils, anti-wear lubricating oils, diesel fuels, and gasolines.

REFERENCES:
patent: 3206425 (1965-09-01), Muller et al.

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