Patent ID: 8298996

Claim:
A composition comprising: an aqueous based continuous phase; a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: wherein R 1 and R 2 are alkyl or hydroxyalkyl groups with one to three carbon atoms or combinations thereof, and R 3 is a hydroxyalkyl group with one to three carbon atoms, with an alkylating agent of the following general formula: R-A wherein R is an alkyl radical with one to three carbon atoms, and A is an organic or inorganic anion selected from the group consisting of sulfate, phosphate, carbonate, and combinations thereof; and a weighting wherein the weighting material is selected from the group consisting of galena, magnetite, illmenite, siderite, celestite, dolomite, barite, hematite, iron oxide, calcium carbonate and mixtures thereof.