Aqueous lubricant compositions
AssigneeMobil Oil Corporation
InventorsRobert H. Davis, Alfred B. Piotrowski
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Abstract
Improved water soluble lubricant compositions are provided by incorporating therein amides derived from alkylamines and succinic, tetrahydrophthalic or tetrahydrofuran tetracarboxylic acids.
Claims11
An improved water-soluble lubricant comprising an effective anti-corrosion or anti-rust amount of a water-soluble amide derived from the reaction of a C.sub.1 -C.sub.30 primary alkyl amine or a C.sub.1 -C.sub.30 secondary alkyl amine with a member selected from the group consisting of tetrahydrophthalic acid, tetrahydrofuran tetracarboxylic acid, tetrahydrophthalic acid anhydride and tetrahydrofuran tetracarboxylic acid anhydride and water to make the balance of the composition.
A water-soluble lubricant composition comprising about 5-40 wt. % of a water-soluble amide derived from the reaction of a C.sub.1 -C.sub.30 primary or secondary alkyl amine and a member selected from the group consisting of tetrahydrophthalic acid tetrahydrofuran tetracarboxylic acid tetrahydrophthalic acid anhydride and tetrahydrofuran tetracarboxylic acid anhydride, 5-50 wt. % of a water-soluble mono-, di- or tri-alkanolamine, about 0.5 to 20 wt. % of a water-soluble polyoxyalkylene glycol containing at least one homopolyalkylene unit having a unit weight of at least about 800 and water to make the balance of the composition.
Dependencies are inferred from the claim text.