Stable lubricant emulsion
AssigneeFracklean, LLC
InventorDaniel Daly
Life of this patent
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Abstract
A stable lubricant emulsion composition for use in engine and gear applications is provided. The emulsion includes a base petroleum oil, an aqueous salt solution that functions as a friction/wear modifier, and a polymeric non-ionic surfactant composition having a hydrophilic-lipophilic balance value in the range of 2.5 to 7 and an average molecular weight in the range of 1,000 to 3,000. The surfactant composition may include a polyester surfactant, a PIB succinimide surfactant, a PIB amine surfactant, or a mixture thereof.
Claims15
A lubricant composition, said composition comprising a water-in-oil emulsion comprising:
- a base oil;
- a friction modifier in the form of an aqueous salt solution;
- and
- a polymeric dispersant in an amount effective to form a stable emulsion,
- wherein the dispersant has an average molecular weight in the range of 1,000 to 3,000 and a hydrophilic-lipophilic balance value in the range of 2.5 to 7.
A method for formulating a water-in-oil emulsion comprising:
- a base oil;
- a friction modifier in the form of an aqueous salt solution;
- and a polymeric dispersant having an average molecular weight in the range of 1,000 to 3,000 and having a hydrophilic-lipophilic balance value in the range of 2.5 to 7, said method comprising the steps of:
- adding the aqueous salt solution to the base oil;
- adding the dispersant to the base oil and to the aqueous salt solution to form a mixture;
- and
- mixing the mixture to form the emulsion, wherein the dispersant is added in an amount effective to form a stable emulsion.
A lubricant composition, said composition comprising a water-in-oil emulsion comprising:
- a base oil;
- a friction modifier in the form of an aqueous salt solution;
- and
- a polymeric dispersant in an amount effective to form a stable emulsion,
- wherein the dispersant has an average molecular weight in the range of 1,000 to 3,000 and a hydrophilic-lipophilic balance value in the range of 4 to 6,
- wherein the dispersant comprises a polyester surfactant mixed with a PIB succinimide surfactant or a polyester surfactant mixed with a PIB amine surfactant, and
- wherein the emulsion is stable for at least six weeks.
Dependencies are inferred from the claim text.