Personal care compositions

Patent metadata

Field	Value
Publication number	US-10292912-B2
Application number	US-201615391830-A
Country	US
Kind code	B2
Filing date	Dec 27, 2016
Priority date	Dec 30, 2015
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

Described herein, are aqueous soluble tin phosphate complexes formed from a mixture comprising tin (II) fluoride and a pyrophosphate salt. Also described are external personal care compositions comprising the complexes, and uses thereof.

First claim

What is claimed is:

1. An external personal care composition comprising tin (II) fluoride and a pyrophosphate salt, wherein the tin (II) fluoride and pyrophosphate salt form an aqueous soluble tin phosphate complex, wherein the composition is an antiperspirant or a deodorant further comprising a surfactant, an emollient, a silicone, and water;
wherein the complex is present in an amount of 5 to 30 weight % by weight of the composition,
wherein the emollient is present in an amount of 1 to 10 weight % by weight of the composition,
wherein the silicone is present in an amount of 1 to 10 weight % by weight of the composition, and
wherein water is present in an amount of 60 to 85 weight % by weight of the composition.

2. The composition of claim 1 , wherein the complex is formed in the composition in situ.

3. The composition of claim 1 , wherein the complex is formed in situ in an aqueous solution and combined with the composition.

4. The composition of claim 3 , wherein the complex is isolated from the aqueous solution in solid form and combined with the composition.

5. The composition of claim 1 , wherein the complex is lyophilized and combined with the composition.

6. The composition of claim 1 , wherein the complex is isolated with an anti-solvent and combined with the composition.

7. The composition of claim 1 , wherein the composition comprises the tin (II) fluoride and pyrophosphate salt in a molar ratio of at least 1P:1Sn, wherein P is phosphorous.

8. The composition of claim 1 , wherein the composition comprises the tin (II) fluoride and pyrophosphate salt in a molar ratio of 1P:1Sn to 15P:1Sn, wherein P is phosphorous.

9. The composition of claim 1 , wherein the composition comprises 1 to 10 weight % tin (II) fluoride by weight of the composition and 1 to 40 weight % pyrophosphate salt by weight of the composition.

10. The composition of claim 1 , wherein the pyrophosphate salt is tetrapotassium pyrophosphate (K 4 P 2 O 7 ).

11. The composition of claim 10 , wherein the composition comprises the tin (II) fluoride and tetrapotassium pyrophosphate in a molar ratio of at least 1P:1Sn, wherein P is phosphorous.

12. The composition of claim 10 , wherein the composition comprises the tin (II) fluoride and tetrapotassium pyrophosphate in a molar ratio of 1P:1Sn to 15P:1Sn, wherein P is phosphorous.

13. The composition of claim 10 , wherein the composition comprises 1 to 10 weight % tin (II) fluoride by weight of the composition and 1 to 40 weight % tetrapotassium pyrophosphate by weight of the composition.

14. The composition of claim 1 , wherein the pyrophosphate salt is tetrasodium pyrophosphate (Na 4 P 2 O 7 ).

15. The composition of claim 14 , wherein the composition comprises the tin (II) fluoride and tetrasodium pyrophosphate in a molar ratio of 1P:1Sn to 5P:1Sn, wherein P is phosphorous.

16. The composition of claim 14 , wherein the composition comprises 1 to 10 weight % tin (II) fluoride by weight of the composition and 1 to 30 weight % tetrasodium pyrophosphate by weight of the composition.

17. The composition of claim 14 , wherein the tin (II) fluoride and tetrasodium pyrophosphate (Na 4 P 2 O 7 ) form a complex having the formula [P 2 O 7 ] 4− Na + Sn 2+ 2 F − .

18. The composition of claim 1 further comprising another antiperspirant salt comprising a polyvalent cation.

19. The composition of claim 1 , wherein the composition is entirely or substantially free of aluminum and optionally zirconium.

20. The composition of claim 1 , further comprising a surfactant that is present in an amount of 1 to 30 weight % by weight of the composition, wherein the emollient is present in an amount of 2 weight % by weight of the composition, and wherein the silicone is present in an amount of 2 weight % by weight of the composition.

21. A method to occlude pores and/or reduce sweat in a person in need thereof comprising applying an effective amount of an external personal care composition as claimed in claim 1 to the skin of the person.

Assignees

• Colgate Palmolive Co

Inventors

• Schankel Daniel
• Nawrocki Shiri
• Dubovoy Viktor
• Pan Long

Classifications

• A61K8/24

  Phosphorous; Compounds thereof · CPC title

• A61Q15/00

  Anti-perspirants or body deodorants (deodorisation of air A61L9/00) · CPC title

• A61K8/21 Primary

  Fluorides; Derivatives thereof · CPC title

• A61K8/19

  containing inorganic ingredients · CPC title

• A61K2800/30

  Characterized by the absence of a particular group of ingredients · CPC title