Patent ID: 9174070
Filing Date: 2015-11-03
Classification: A61K,A61Q

Abstract:
1. A single phase whitening toothpaste composition comprising (i) a whitening complex comprising crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, wherein the whitening complex contains about 10-30% hydrogen peroxide, by weight, and about 5-15% total nitrogen by weight, wherein the total amount of hydrogen peroxide by weight of the composition is 0.5-3%, (ii) an ethylene oxide, propylene oxide block co-polymer of average molecular weight greater than 5000 Da, being substantially free of an ethylene oxide, propylene oxide block co-polymer of average molecular weight less than 5000 Da, wherein the ethylene oxide, propylene oxide block co-polymer comprises (ethylene oxide) (iii) 0.1-30% by weight of an anticalculus agent selected from the group consisting of phosphates, polyphosphates, polyaminopropanesulfonic acid, hexametaphosphate salts, zinc citrate trihydrate, polypeptides, polyolefin sulfonates, polyolefin phosphate, diphosphonates and mixtures thereof, (iv) polyethylene glycol of average molecular weight 400 to 800 Da, (v) a calcium abrasive selected from a calcium phosphate salt and calcium carbonate, and wherein the composition contains less than 3% by weight of water.