Organic tungsten complexes
AssigneeVandebilt Chemicals, LLC
InventorDavid Boudreau, Sr.
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Abstract
This invention relates to an organic tungsten complex prepared by providing a strongly acidic tungsten precursor having pH≦2.5, and either reacting the tungsten precursor with a nitrogenous base to form a tungsten salt intermediate having a pH ranging from ≧5 to ≦8.5, and further reacting the tungsten salt intermediate with a fatty acid derivative of an alcohol, wherein the fatty acid derivative of an alcohol contains at least one free hydroxyl group; or reacting the tungsten precursor with a fatty acid derivative of an alcohol, wherein the fatty acid derivative of an alcohol contains at least one free hydroxyl group and a nitrogenous base. Further, this invention relates to lubricating compositions containing the inventive tungsten complexes.
Claims18
A process for preparing an organic tungsten complex, comprising the steps of, in order:
- (a) providing a strongly acidic tungsten precursor having pH≦2.5, and either
- (b)(i) (A) reacting the tungsten precursor with a nitrogenous base to form a tungsten salt intermediate having a pH ranging from ≧5 to ≦8.5, and
- (B) reacting the tungsten salt intermediate with a fatty acid derivative of an alcohol, the fatty acid derivative of an alcohol containing at least one free hydroxyl group;
- or
- (b)(ii) reacting the tungsten precursor with a fatty acid derivative of an alcohol, the fatty acid derivative of an alcohol containing at least one free hydroxyl group and a nitrogenous base.
Dependencies are inferred from the claim text.