Patent ID: 7279152

Claim:
A process for preparing an acidic orally administrable composition comprising 1) providing a first acidic orally administrable composition; 2) adding to said first orally administrable composition: a) a polyphosphate polymer having at least three phosphate groups and wherein the polyphosphate polymer concentration is in the range 0.005 to 3.0 g/l; b) a viscosity modifying polymer selected from hydrocolloids, alginates, locust bean gum, gellan gum, guar gum, gum arabic, tragacanth, carrageenan, acacia gum, xanthan gums, pectins, celluloses, polyvinylpyrrolidone (PVP), and combinations or mixtures thereof; and c) a calcium salt present in an amount from 0.1 to 0.8 mols of calcium per mol of acid; and d) adjusting the effective pH of the composition to 2.2 to 5.5 and wherein the composition has a titratable acidity from 0.01 to 0.4% w/w; and 3) thereby providing a second acidic orally administrable composition which has a lower tooth erosion potential than said first acidic orally administrable composition.