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US 11,591,539 B2Granted
Lubricant composition and use of the same as a pipe dope
AssigneeShell USA, Inc.
InventorsEduard Alexander Worthington, Stefan Daegling, Alan Richard Wheatley, Dennis Ernens, Gerben Westra, Yves Louis Charly Arjen Schoen, Henry Rihard Pasaribu
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Abstract
The present invention provides a lubricant composition comprising: (i) a base oil (ii) an organophilic clay-based thickener; and (iii) a solid lubricant, wherein said solid lubricant does not comprise any heavy metals. The present invention also provides the use of a lubricant composition comprising: a base oil; an organophilic clay-based thickener; and a solid lubricant, wherein said solid lubricant does not comprise any heavy metals, as a pipe dope.
Claims7
A lubricant composition comprising:
- (i) a base oil
- (ii) in the range of from 5 wt % to 15 wt % of an organophilic clay-based thickener;
- and
- (iii) a solid lubricant, wherein said solid lubricant does not comprise any lead, and wherein the solid lubricant is selected from natural and synthetic graphite, and wherein the lubricant composition also comprises in the range of from 4 to 20 wt % of one or more group 2 metal based inorganic compounds selected from the group consisting of one or more of calcium carbonate, calcium sulfate, calcium hydroxide, calcium oxide and calcium phosphate,
- wherein the solid lubricant is present in an amount of 5 to 30 wt % based on the overall weight of the lubricant composition,
- wherein the organophilic clay-based thickener is a bentonite-based thickener and the bentonite-based thickener is surface treated with quaternary ammonium compounds with aliphatic hydrocarbon chains in the range from C10 to C24, and
- wherein the lubricant composition is applied as a pipe dope.
4 more elements
Dependencies are inferred from the claim text.