Jammed emulsion toothpaste compositions
Jammed oil-in-water emulsion toothpaste compositions. Jammed oil-in-water emulsion toothpaste compositions with unexpectedly high yield stress values and/or high opacity without the use of a solid opacifier. Jammed oil-in-water emulsion toothpaste compositions with a hydrophobic phase with a particular droplet size of from about 0.4 microns to about 1000 microns, which can lead to toothpaste compositions with unexpectedly high yield stress values and/or high opacity without the use of a solid opacifier.
1 . A toothpaste composition comprising:
(a) an aqueous phase;
(b) greater than 80%, by weight of the toothpaste composition, of a hydrophobic phase; and
(c) an emulsifier,
wherein the toothpaste composition is a jammed oil-in-water emulsion composition comprising droplets of the hydrophobic phase, and the droplets have a D[4,3] equivalent-diameter from 0.001 microns to 1000 microns,
wherein the hydrophobic phase is discontinuous and separate regions of the hydrophobic phase influence a shape of one another, and
wherein the toothpaste composition is substantially free of opacifier and the toothpaste composition is opaque.
2 . The toothpaste composition of claim 1 , wherein the D[4,3] equivalent-diameter is from 0.01 microns to 100 microns.
3 . The toothpaste composition of claim 1 , wherein a yield stress of the toothpaste composition is greater than a yield stress of the hydrophobic phase and a yield stress of the aqueous phase.
4 . The toothpaste composition of claim 1 , wherein a yield stress of the toothpaste composition is from 4 Pa to 1000 Pa.
5 . The toothpaste composition of claim 1 , wherein a yield stress of the toothpaste composition is from 25 Pa to 500 Pa.
6 . The toothpaste composition of claim 1 , wherein the emulsifier comprises nonionic surfactant, anionic surfactant, cationic surfactant, zwitterionic surfactant, amphoteric surfactant, polymeric surfactant, synthetic surfactant, or combinations thereof.
7 . The toothpaste composition of claim 6 , wherein the emulsifier is substantially free of sulfate.
8 . The toothpaste composition of claim 6 , wherein the emulsifier is substantially free of sodium lauryl sulfate.
9 . The toothpaste composition of claim 6 , wherein the emulsifier comprises polysorbate, alkyl sulfate, betaine, or combinations thereof.
10 . The toothpaste composition of claim 1 , further comprising an oral care active agent.
11 . The toothpaste composition of claim 10 , wherein the oral care active agent comprises a whitening agent, and the whitening agent comprises peroxide.
12 . The toothpaste composition of claim 11 , wherein the peroxide comprises hydrogen peroxide, urea peroxide, polyvinylpyrrolidone peroxide complex, cross-linked polyvinylpyrrolidone peroxide complex, or combinations thereof.
13 . The toothpaste composition of claim 10 , wherein the oral care active agent comprises an anticaries agent, and the anticaries agent comprises hops, fluoride, or combinations thereof.
14 . The toothpaste composition of claim 13 , wherein the oral care active agent comprises fluoride, and the fluoride comprises sodium fluoride, amine fluoride, sodium monofluorophosphate, stannous fluoride, or combinations thereof.
15 . The toothpaste composition of claim 10 , wherein the oral care active agent comprises an antibacterial agent, and the antibacterial agent comprises hops, metal, or combinations thereof.
16 . The toothpaste composition of claim 15 , wherein the antibacterial agent comprises a metal, and the metal comprises zinc, tin, copper, or combinations thereof.
17 . The toothpaste composition of claim 16 , wherein the metal comprises the zinc, and the zinc comprises zinc phosphate, zinc oxide, zinc citrate, zinc lactate, zinc chloride, or combinations thereof.
18 . The toothpaste composition of claim 16 , wherein the metal comprises the tin, and the tin comprises stannous fluoride, stannous chloride, or combinations thereof.
19 . The toothpaste composition of claim 10 , wherein the oral care active agent comprises an amino acid, and the amino acid comprises arginine, histidine, lysine, aspartic acid, glutamic acid, serine, threonine, asparagine, glutamine, cysteine, selenocysteine, glycine, proline, alanine, valine, isoleucine, leucine, methionine, phenylalanine, tyrosine, tryptophan, citrulline, ornithine, creatine, diaminobutanoic acid, diaminoproprionic acid, salts thereof, or combinations thereof.
20 . The toothpaste composition of claim 10 , wherein the oral care active agent comprises an antisensitivity agent, and the antisensitivity agent comprises potassium nitrate, tin, dicarboxylic acid, or combinations thereof.
21 . The toothpaste composition of claim 20 , wherein the oral care active agent comprises a dicarboxylic acid, and the dicarboxylic acid comprises oxalic acid, salts thereof, or combinations thereof.
22 . The toothpaste composition of claim 10 , wherein the oral care active agent comprises a retinoid compound, and the retinoid compound comprises retinol.
23 . The toothpaste composition of claim 1 , wherein the toothpaste reflects visible light.
24 . The toothpaste composition of claim 23 , wherein the visible light comprises light with a wavelength of from 0.4 microns to 0.7 microns.
25 . The toothpaste composition of claim 1 , further comprising an abrasive.
26 . The toothpaste composition of claim 25 , wherein the abrasive comprises silica abrasive, calcium abrasive, alumina abrasive, or combinations thereof.
27 . The toothpaste composition of claim 1 , wherein the toothpaste composition is substantially free of abrasive.
28 . The toothpaste composition of claim 1 , wherein the hydrophobic phase comprises edible oil, natural oil, or synthetic oil.
29 . The toothpaste composition of claim 28 , wherein the hydrophobic phase comprises mineral oil, petrolatum, coconut oil, palm oil, or combinations thereof.