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US 9,174,070 B2Granted
Oral care compositions
AssigneeColgate-Palmolive Company
InventorsSuman Chopra, Prakasarao Mandadi, Venda Porter Maloney, Dennis Ontumi
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Abstract
Oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, together with an ethylene oxide-propylene oxide block copolymer. Some embodiments further comprise a calcium abrasive, e.g. calcium pyrophosphate or calcium carbonate, and some may have less than 3% water.
Claims14
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)x-(propylene oxide)y wherein x is an integer of 80-150 and y is an integer 30-80,
- (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.
3 more elements
A gel dentifrice 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)x-(propylene oxide)y wherein x is an integer of 80-150 and y is an integer 30-80,
- (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) optionally, a calcium abrasive selected from a calcium phosphate salt and calcium carbonate, and
- wherein the composition contains less than 3% by weight of water.
3 more elements
Dependencies are inferred from the claim text.