Gelling agent for calcium sulfonate greases
AssigneeThe Lubrizol Corporation
InventorsDevon K. McCune, Gareth Fish, Robert Douglas Dura
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Abstract
A calcium sulfonate grease is formed from a base oil of lubricating viscosity, an oil-soluble overbased calcium sulfonate or precursors therefor, a conversion acid, water, and a gelling agent, which is selected from branched aliphatic diols with at least eight carbons, and mixtures thereof.
Claims20
A calcium sulfonate grease formed from a base oil of lubricating viscosity, an oil-soluble overbased calcium sulfonate or precursors therefor, a conversion acid, and a gelling agent, which is selected from branched aliphatic diols with at least eight carbons and mixtures thereof.
A method of forming a calcium sulfonate grease comprising:
- combining a base oil of lubricating viscosity, an oil-soluble overbased calcium sulfonate or precursors therefor, a conversion acid, a gelling agent, and water to form a mixture, wherein the gelling agent is selected from branched aliphatic diols with at least eight carbons, and mixtures thereof;
- and
- heating the mixture to a gelation temperature at which the mixture forms a gel.
A formulation for forming a calcium sulfonate grease comprising:
- 3-20 wt. % of an overbased calcium sulfonate;
- 1-12 wt. % of a conversion acid;
- 2.5-6 wt. % of a gelling agent, which is selected from branched aliphatic diols with at least eight carbons and mixtures thereof;
- 2-25 wt. % of water;
- and
- at least 30 wt. % of a base oil.
Dependencies are inferred from the claim text.