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CN-117062591-B - Oral care compositions

CN117062591BCN 117062591 BCN117062591 BCN 117062591BCN-117062591-B

Abstract

Disclosed is an oral care composition comprising 0.01 to 10 weight percent of a deposition polymer, a polyhydroxy fatty acid amide surfactant of formula (I), wherein R 1 is C 1 -C 4 alkyl or hydroxy substituted C 1 -C 4 alkyl, R 2 is a linear or branched, saturated or unsaturated hydrocarbon chain having 15 to 21 carbon atoms, and a benefit agent selected from the group consisting of optical agents, antimicrobial agents, and mixtures thereof, wherein the deposition polymer comprises xanthan gum, sodium alginate, pectin, modified starch, gelatin, carrageenan, gellan gum, fenugreek gum, konjac gum, tragacanth gum, karaya gum, gamma polyglutamic acid, heparin sodium salt, a copolymer of methyl vinyl ether and maleic anhydride, polyacrylic acid, polystyrene sulfonate, deoxyribonucleic acid, poly (allylamine), locust bean gum, guar gum, polyglycolic acid, polylactic acid, poly (glycolic acid-co-lactic acid), chitosan, humic acid, derivatives or mixtures thereof:

Inventors

  • JIN HUAJIN
  • LIU WEINING

Assignees

  • 联合利华知识产权控股有限公司

Dates

Publication Date
20260505
Application Date
20220304
Priority Date
20210305

Claims (20)

  1. 1. An oral care composition comprising: (a) 0.01 to 10 wt% of a deposition polymer; (b) Polyhydroxy fatty acid amide surfactants of formula (I): (I) Wherein R 1 is C 1 -C 4 alkyl or hydroxy-substituted C 1 -C 4 alkyl, R 2 is a straight or branched, saturated or unsaturated hydrocarbon chain having from 15 to 21 carbon atoms, and (C) A benefit agent selected from the group consisting of optical agents, antimicrobial agents, and mixtures thereof; Wherein the deposition polymer comprises xanthan gum, sodium alginate, pectin, modified starch, gelatin, carrageenan, gellan gum, fenugreek gum, konjac gum, tragacanth gum, karaya gum, gamma-polyglutamic acid, heparin sodium salt, a copolymer of methyl vinyl ether and maleic anhydride, polyacrylic acid, polystyrene sulfonate, deoxyribonucleic acid, poly (allylamine), locust bean gum, guar gum, polyglycolic acid, polylactic acid, poly (glycolic acid-co-lactic acid), chitosan, humic acid, phytic acid, derivatives thereof or mixtures thereof.
  2. 2. The oral care composition of claim 1, wherein the deposition polymer comprises xanthan gum, sodium alginate, pectin, modified starch, gelatin, carrageenan, gellan gum, fenugreek gum, konjac gum, tragacanth gum, karaya gum, gamma-polyglutamic acid, phytic acid, derivatives thereof, or mixtures thereof.
  3. 3. The oral care composition of claim 1 or 2, wherein the deposition polymer comprises xanthan gum and/or a derivative thereof.
  4. 4. The oral care composition of claim 1 or 2, wherein the composition contains the deposition polymer in an amount of 0.02 to 5% by weight of the composition.
  5. 5. The oral care composition of claim 4, wherein the composition contains the deposition polymer in an amount of 0.05 to 3% by weight of the composition.
  6. 6. The oral care composition of claim 1 or 2, wherein R 2 is an alkyl, alkenyl, aryl, or aralkyl group having 15 to 21 carbon atoms.
  7. 7. The oral care composition of claim 6, wherein R 2 is an alkyl, alkenyl, aryl, or aralkyl group having 15 to 19 carbon atoms.
  8. 8. The oral care composition of claim 1 or 2, wherein R 1 is C 1 -C 2 alkyl.
  9. 9. The oral care composition of claim 8, wherein R 1 is methyl.
  10. 10. The oral care composition of claim 1 or 2, wherein R 1 is methyl and R 2 is alkyl having 15 to 21 carbon atoms.
  11. 11. The oral care composition of claim 10, wherein R 1 is methyl and R 2 is alkyl having 15 to 19 carbon atoms.
  12. 12. The oral care composition of claim 1 or 2, wherein the polyhydroxy fatty acid amide surfactant comprises at least 60 weight% of polyhydroxy fatty acid amides wherein R 1 is methyl and R 2 is C 17 alkyl.
  13. 13. The oral care composition of claim 12, wherein the polyhydroxy fatty acid amide surfactant comprises 70 to 100% of polyhydroxy fatty acid amides wherein R 1 is methyl and R 2 is C 17 alkyl.
  14. 14. The oral care composition of claim 13, wherein the polyhydroxy fatty acid amide surfactant comprises 80 to 100% of polyhydroxy fatty acid amides wherein R 1 is methyl and R 2 is C 17 alkyl.
  15. 15. The oral care composition of claim 1 or 2, wherein the polyhydroxy fatty acid amide surfactant is a polyhydroxy fatty acid amide wherein R 1 is methyl and R 2 is C 17 alkyl.
  16. 16. The oral care composition of claim 1 or 2, wherein the composition contains the polyhydroxy fatty acid amide surfactant in an amount of from 0.01 to 10% by weight of the composition.
  17. 17. The oral care composition of claim 16, wherein the composition contains the polyhydroxy fatty acid amide surfactant in an amount of from 0.1 to 8% by weight of the composition.
  18. 18. The oral care composition of claim 1 or 2, wherein the benefit agent is an optical agent selected from the group consisting of pigments, dyes, mica, tiO 2 -coated mica, titanium dioxide, calcium silicate-coated titanium dioxide, and mixtures thereof.
  19. 19. The oral care composition of claim 18, wherein the benefit agent is a pigment having a hue angle h of 220 degrees to 320 degrees in a CIELAB system.
  20. 20. The oral care composition of claim 19, wherein the benefit agent is a pigment having a hue angle h of from 250 degrees to 290 degrees in a CIELAB system.

Description

Oral care compositions Technical Field The present invention relates to oral care compositions such as toothpastes, powders, gums (gum), mouthwashes and the like. In particular, the present invention relates to oral care compositions comprising a benefit agent and a deposition aid for the benefit agent. The invention also relates to the use of such a composition for whitening teeth and/or improving the hygiene of the oral cavity of a person. Background The enamel layer of a tooth is naturally opaque white or slightly off-white. However, such enamel layers may be stained or discolored. Many products we consume have a negative impact on our teeth and mouth. Many substances stain or reduce the whiteness of a person's teeth, especially certain foods, tobacco products and fluids such as tea and coffee. These staining and staining substances are generally capable of penetrating the enamel layer. This problem occurs gradually over many years, and can cause significant discoloration of the enamel of a person's teeth. Consumers have a strong desire to keep teeth healthy and white. Benefit agents such as optical agents and antimicrobial agents are often incorporated into oral care products to provide benefits such as whitening and better oral hygiene. However, many oral care products do not provide adequate deposition of benefit agents on the teeth. During daily oral hygiene (e.g., brushing), the benefit agent will simply be rinsed away and therefore have little or no benefit. Accordingly, there is a continuing need for an oral care composition that provides improved deposition of benefit agents onto teeth to maximize the effectiveness of such benefit agents. WO 2020/234811A1 (3M Innovative Properties Company) discloses a composition comprising 0.2 to 3 wt% total of arginine, glycine, or a combination thereof, based on the total weight of the composition, and 0.3 to 3 wt% total of one or more surfactants of formula I HOCH 2-(CHOH)n-CH2NR1R2 (I), wherein R 1 and R 2 are independently selected from the group consisting of hydrogen atoms, alkyl groups, C (O) R 3 and SO 2R4, wherein R 3 and R 4 are independently selected from the group consisting of alkyl groups, aryl groups and aralkyl groups, wherein n is an integer from about 2 to about 5. WO 2020/091805A1 (Colgate-Palmolive Company) discloses an oral care composition comprising an orally acceptable carrier and one or more surfactants. The one or more surfactants may include N-alkyl-N-acyl glucamines. WO 2019/123171A1 (3M Innovative Properties Company) discloses a composition comprising from 0.1 to 8 wt% based on the total weight of the composition of one or more compounds having the formula HOCH 2-(CHOH)n-CH2NR1R2, wherein R 1 and R 2 are independently selected from the group consisting of hydrogen atoms, alkyl groups, C (O) R 3 and SO 2R4, wherein R 3 and R 4 are independently selected from the group consisting of alkyl groups, aryl groups and aralkyl groups, wherein n is an integer from about 2 to about 5, from 5 to 95 wt% based on the total weight of the composition of one or more plant-based oils, from 5 to 80 wt% based on the total weight of the composition of water, and from 0.01 to 1wt% based on the total weight of the composition of one or more nonionic aromatic phenolic preservatives, wherein the composition has a pH from 4.5 to 9.5, the composition is an emulsion, and the composition is edible. Disclosure of Invention In a first aspect, the present invention relates to an oral care composition comprising: (a) 0.01 to 10 wt% of a deposition polymer; (b) Polyhydroxy fatty acid amide surfactants of formula (I): Wherein R 1 is C 1-C4 alkyl or hydroxy-substituted C 1-C4 alkyl, R 2 is a straight or branched, saturated or unsaturated hydrocarbon chain having from 15 to 21 carbon atoms, and (C) A benefit agent selected from the group consisting of optical agents, antimicrobial agents, and mixtures thereof; Wherein the deposition polymer comprises xanthan gum, sodium alginate, pectin, modified starch, gelatin, carrageenan, gellan gum, fenugreek gum, konjac gum, tragacanth gum, karaya gum (karaga gum), gamma-polyglutamic acid, heparin sodium salt, a copolymer of methyl vinyl ether and maleic anhydride, polyacrylic acid, polystyrene sulfonate, deoxyribonucleic acid, poly (allylamine), locust bean gum, guar gum, polyglycolic acid, polylactic acid, poly (glycolic acid-co-lactic acid), chitosan, humic acid, phytic acid, derivatives or mixtures thereof. In a second aspect, the present invention relates to a packaged oral care product comprising the oral care composition of the first aspect of the present invention. In a third aspect, the present invention relates to a method of whitening teeth and/or improving oral hygiene in a person comprising the step of applying the composition of any embodiment of the first aspect to at least one surface of a person's teeth. All other aspects of the invention will become more readily apparent upon consideration of the following detai