Sulfonate greases
AssigneeWitco Corporation
InventorsWilliam D. Olson, Ronald J. Muir, Theo I. Eliades, Thomas Steib
Life of this patent
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Abstract
High performance overbased calcium sulfonate greases comprising up to about 28% by weight overbased calcium sulfonate, solid particles of colloidally dispersed calcium carbonate essentially in the form of calcite, a calcium soap of a fatty acid of twelve to twenty-four carbon atoms, and oleaginous vehicle wherein at a concentration of about 28% by weight overbased calcium sulfonate said greases have a worked cone penetration rating of less than about 295.
Claims14
High performance overbased calcium sulfonate greases comprising up to about 28% by weight overbased calcium sulfonate, solid particles of colloidally dispersed calcium carbonate essentially in the form of calcite, a calcium soap of a fatty acid of twelve to twenty-four carbon atoms, and oleaginous vehicle wherein at a concentration of about 28% by weight overbased calcium sulfonate said greases have a worked cone penetration rating of less than about 295.
The method of forming an overbased calcium sulfonate grease comprising an overbased calcium sulfonate, colloidally dispersed calcium carbonate in the form of calcite which comprises the steps of (1) heating a composition comprising overbased calcium sulfonate, amorphous calcium carbonate, an oleaginous vehicle, and a converting agent comprising a fatty acid of 12 to 24 carbon atoms and (2) adding to said composition with components comprising a fatty acid of 12 to 24 carbon atoms.
Dependencies are inferred from the claim text.