Patent ID: 8765650
Filing Date: 2014-07-01
Classification: C10M,C10N

Abstract:
1. A composition comprising an oil-soluble ionic detergent, which detergent comprises (a) a quaternary ammonium cation and (b) an organic anion having at least one aliphatic hydrocarbyl group of sufficient length to impart oil solubility to the detergent; said oil-soluble ionic detergent having a total base number (TBN) to total acid number (TAN) ratio of at least about 2:1; wherein said oil-soluble ionic detergent exhibits a TBN of at least about 10 arising from a non-metallic base, and wherein said oil-soluble ionic detergent comprises a stoichiometric excess of quaternary ammonium cations of (a) over organic anions of (b) such that said cations and anions are present in an equivalent ratio (a):(b) of at least about 2:1; and wherein the overbased detergent further comprises an oxo-anion which comprises a carbonate, bicarbonate, borate, hydroxide, nitrate, phosphate, sulfate, or carboxylate ion or mixtures thereof, said carboxylate ion containing 5 or fewer carbon atoms.