Oral care compositions comprising phytic acid

摘要

An oral care composition comprising a stannous ion source and/or a zinc ion source; a phytic acid or a phytic acid salt or mixtures thereof; characterized in that the phytic acid or phytic acid salt has an average IPn of greater than 5.2. In a composition which comprises stannous, there is a decrease in soluble stannous whilst maintaining an equivalent efficacy to a composition comprising a higher level of soluble stannous and efficacy is observed for avoiding stain and astringency problems. When zinc ions are present, it has been surprisingly found that a decrease in soluble zinc can provide an equivalent antimicrobial efficacy to a composition comprising a greater level of soluble zinc.

主权项

1. An oral care composition consisting essentially of:
a) a mixture consisting of a water-soluble stannous ion source and a water-soluble zinc ion source; b) a chelant mixture consisting of phytic acid or a phytic acid salt or mixtures thereof and methylvinylether/maleicacid chelant copolymer as a further chelating agent; wherein the phytic acid or phytic acid salt has an average mean number of phosphate groups on inositol (IPn) of greater than 5.7; c) silica dental abrasive; and wherein the level of soluble stannous ion in a 3:1 diluted slurry or solution is in the range of from about 300 to about 1000 ppm; and wherein the level of soluble zinc ion in a 3:1 diluted slurry or solution is in the range from about 100 to about 700 ppm.