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1. WO2020117238 - COMPOSITIONS DE SOINS D'HYGIÈNE PERSONNELLE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1. A topical composition for use in reducing exposure of gaseous pollutants to skin, comprising:

about 0.3 wt% to about 3.0 wt% acrylic acid polymer,

about 0.3 wt% to about 3.0 wt% cationic surfactant; and

a cosmetically acceptable carrier.

2. The composition of a claim 1, wherein the acrylic acid polymer has a mean molecular weight of less than about 10,000 g/mol.

3. The composition of a claim 1, wherein the acrylic acid polymer has a mean molecular weight in the range of about 1,000 g/mol to about 5,000 g/mol.

4. The composition of any claims 1 to 3, wherein the pH of the 63% mixture of the acrylic acid polymer in water is between 2.0 and 4.0.

5. The composition of any claims 1 to 4, wherein the cationic surfactant has the formula

wherein a = 1, 2, or 3;

b ----- 3 - a;

M is an alkali metal;

X is a halogen;

R is CJ¾;

m ------ 9 to 19; and

n = 2 m+l, 2m- 1, 2m 3. or 2m-5.

6. The composition of any claims 1 to 4, wherein the cationic surfactant is selected from the group consisting of cocamidopropyl PG-dimonium chloride phosphate, coco PG-dimonium chloride, myri stand dopropyl PG-dimonium chloride phosphate, linoleamidopropyl PG-dimonium chloride phosphate, stearamidopropyi PG-dimonium chloride phosphate,

lauramidopropyl PG-dimonium chloride, meadowfoam amidopropyl PG-dimonium chloride, palmitamidopropyltrimonium chloride, and mixtures thereof thereof.

7. The composition of any claims 1 to 6, comprising about 0.5 wt% to about 2.1 wt% of the acrylic acid polymer.

8. The composition of any of claims 1 to 7, comprising about 0.5 wt% to about 2.1 wt% of the cationic surfactant.

9. The composition of any of claims 1 to 8, wherein the wt% ratio of acrylic acid polymer to cationic surfactant is between about 0.4 : 1 to about 1.4 : 1.

10. The composition of any of claims 1 to 8, wherein the wt% ratio of acrylic acid polymer to cationic surfactant is between about 0 9 : 1 to about 2.5 : 1.

1 1. The composition of any of claims 1 to 8, wherein the wt% ratio of acrylic acid polymer to cationic surfactant is between about 0.7 : 1 to about 1.4 : 1.

12. The composition of any of claims 1 to 11, wherein the composition further comprises water, a humectant, a preservative, an exfoliator, a lubricant, an emollient, and an emulsifier.

13. The composition of any of claims 1 to 12, wherein the composition is a fully formulated topical lotion for use in reducing exposure of gaseous pollutants to skin of a patient

14. The composition of any of claims J to 13, wherein a 20-micrometer layer of the composition reduces the transmission of ozone by at least 20% compared to the composition without the acrylic acid polymer and the cationic surfactant.

15. The composition of any of claims 1 to 13, wherein a 20-micrometer layer of the composition reduces the transmission of ozone by at least 20% compared to the composition without the acrylic acid polymer.

16. The composition of any of claims 1 to 13, wherein a 20-micrometer layer of the composition reduces the transmission of ozone by at least 20% compared to the composition without the cationic surfactant.

17. A method for reducing exposure of gaseous pollutants to skin of a patient for skin, comprising applying to an area of skin the composition comprising

about 0 3 wt% to about 3.0 wt% acrylic acid polymer;

about 0.3 wt% to about 3.0 wt% cationic surfactant; and

a cosmetically acceptable carrier.

18. The method of claim 17, wherein the acrylic acid polymer has a mean molecular weight of less than about 10,000 g/mol.

19. The method of claim 17, wherein the acrylic acid polymer has a mean molecular weight in the range of about 1,000 g/mol to about 5,000 g/mol.

20. The method of any of claims 17 to 19, wherein the pH of the 63% solid solution in water is between 2.0 and 4.0.

21. The method of any of claims 17 to 20, wherein the cationic surfactant has the formula

wherein a = 1, 2, or 3;

b ------ 3 - a;

M is an alkali metal;

X is a halogen,

R is CmH„;

m --- 9 to 19, and


22. The method of any of claims 17 to 20, wherein the cationic surfactant is selected from the group consisting of cocamidopropyl PG-dimonium chloride phosphate, coco PG-dimonium

chloride, myristamidopropyl PG-dimonium chloride phosphate, linoleamidopropyl PG-dimonium chloride phosphate, stearamidopropyl PG-dimonium chloride phosphate, lauramidopropyl PG-dimonium chloride, meadowfoam amidopropyl PG-dimonium chloride, palmitamidopropyl PG-dimonium chloride phosphate, palmitamidopropyltrimonium chloride phosphate, and mixtures thereof thereof.

23. The method of any of claims 17 to 22, wherein the composition compri ses about 0.5 wt% to about 2.1 wt% of the acrylic acid polymer.

24. The method of any of claims 17 to 23, wherein the composition comprises about 0.5 wt% to about 2.1 wt% of the cationic surfactant.

25. The method of any of claims 17 to 24, wherein the wt% ratio of acrylic acid polymer to cationic surfactant is between about 0 4 : 1 to about 1.4 : 1.

26. The method of any of claims 17 to 24, wherein the wt% ratio of acrylic acid polymer to cationic surfactant is between about 0.9 : 1 to about 2.5 : 1.

27. The method of any of claims 17 to 24, wherein the wt% ratio of acrylic acid polymer to cationic surfactant is between about 0.7 : 1 to about 1.4 : 1.

28. The method of any of claims 17 to 27, wherein the composition further comprises water, a humectant, a preservative, an exfoliator, a lubricant, an emollient, and an emulsifier.

29. The method of any of claims 17 to 28, wherein the composition is a fully formulated topical lotion for use in reducing exposure of gaseous pollutants to skin of a patient.

30. The method of any of claims 17 to 29, wherein a 20-micrometer layer of the composition reduces the transmission of ozone by at least 20% compared to the composition without the acrylic acid polymer and the cationic surfactant.

31. The method of any of claims 17 to 29, wherein a 20-micrometer layer of the composition reduces the transmission of ozone by at least 20% compared to the composition without the acrylic acid polymer.

32. The method of any of claims 17 to 29, wherein a 20-micrometer layer of the composition reduces the transmission of ozone by at least 20% compared to the composition without the cationic surfactant.