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1. WO2020112365 - DUAL COMPONENT COMPOSITIONS FOR TEETH WHITENING

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[ EN ]

CLAIMS

WHAT IS CLAIMED IS:

I . A dual component oral care composition comprising:

(1) a first component comprising a solid composition comprising at least one whitening agent chosen from chloride isocyanurate and metal salts of hypochlorite; and

(2) a second component comprising an aqueous mouthwash composition comprising at least one first effervescent acid present in an amount ranging from about 1% to about 3.5%, by weight relative to the total weight of the aqueous mouthwash composition,

wherein the first component and the second component are maintained separately until a time of use.

2. The dual component oral care composition according to claim 1, wherein the at least one whitening agent is sodium dichloroisocyanurate.

3. The dual component oral care composition according to claim 1 or 2, wherein the at least one whitening agent is present in the solid composition in an amount ranging from about 0.5% to about 50%, by weight relative to the total weight of the solid composition.

4. The dual component oral care composition according to any of the preceding claims, wherein the solid composition further comprises at least one carbonate base.

5. The dual component oral care composition according to claim 4, wherein the at least one carbonate base is sodium bicarbonate.

6. The dual component oral care composition according to any of the preceding claims, wherein the at least one first effervescent acid is sodium acid pyrophosphate.

7. The dual component oral care composition according to any of the preceding claims, wherein the solid composition further comprises at least one second effervescent acid.

8. The dual component oral care composition according to any of the preceding claims, wherein the solid composition is free of microcrystalline cellulose.

9. The dual component oral care composition according to any of the preceding claims, wherein the solid composition is free of magnesium stearate.

10. The dual component oral care composition according to any of the preceding claims, wherein the solid composition is free of a water-soluble polymer.

11. The dual component oral care composition according to any of the preceding claims, wherein 50 mg of the solid composition is capable of disintegrating in 20 mL of the aqueous mouthwash composition in less than about 180 seconds.

12. The dual component oral care composition according to any of the preceding claims, wherein 50 mg of the solid composition is capable of disintegrating in 20 mL of the aqueous mouthwash composition in less than about 90 seconds.

13. The dual component oral care composition according to any of the preceding claims, wherein the at least one first effervescent acid is present in the aqueous mouthwash composition in an amount of about 3%, by weight relative to the total weight of the aqueous mouthwash composition.

14. The dual component oral care composition according to any of the preceding claims, wherein the dual component oral care composition has a pH ranging from about 4.8 to about 6.0.

15. The dual component oral care composition according to any of the preceding claims, wherein the dual component oral care composition has a pH ranging from about 5.0 to about 5.2.

16. A kit comprising:

a solid composition for oral care comprising at least one whitening agent chosen from chloride isocyanurate and metal salts of hypochlorite,

a container; and

an aqueous mouthwash composition inside the container, wherein the aqueous mouthwash composition comprises at least one effervescent acid present in an amount ranging from about 1% to about 3.5%, by weight relative to the total weight of the aqueous mouthwash composition.

17. The kit according to claim 16, further comprising a cup suitable for holding a specific amount of the aqueous mouthwash composition and a unit dose of the solid composition that is appropriate for the specific amount.

18. The kit according to claim 16 or 17, wherein the at least one whitening agent is sodium di chi oroi soey anurate

19. The kit according to any one of claims 16-18, wherein the at least one effervescent acid is sodium acid pyrophosphate.

20. A method of whitening teeth, the method comprising:

mixing a solid composition for oral care comprising at least one whitening agent chosen from chloride isocyanurate and metal salts of hypochlorite with an aqueous mouthwash composition comprising at least one effervescent acid present in an amount ranging from about 1% to about 3 5%, by weight relative to the total weight of the aqueous mouthwash composition, until the solid composition disintegrates to create a mouthwash comprising hypochlorite;

contacting the teeth with the mouthwash comprising hypochlorite; and

optionally expectorating the mouthwash comprising hypochlorite.

21. The method of claim 20, wherein 50 mg of the solid composition disintegrates in about 20 mL of the aqueous mouthwash composition in less than about 90 seconds.

22. The method of claim 20 or 21, wherein 50 mg of the solid composition disintegrates in about 20 mL of the aqueous mouthwash composition in about 15 seconds or less.

23. A dual component oral care composition comprising:

(1) a first component comprising a solid composition comprising at least one whitening agent chosen from chloride isocyanurate and metal salts of hypochlorite; and

(2) a second component comprising an aqueous mouthwash composition comprising at least one first effervescent acid,

wherein the first component and the second component are maintained separately until a time of use, and

wherein the dual component oral care composition has a pH ranging from about

4.8 to about 6.0.