EP-4734923-A1 - CLEANSING COMPOSITIONS COMPRISING DIVALENT SALTS

Abstract

The present disclosure is drawn to cleansing compositions. The cleansing compositions include: (a) one or more anionic surfactants; (b) one or more nonionic emulsifiers having a Hydrophile-Lipophile Balance (HLB) of about 6 or less; (c) one or more salts providing divalent cations having a charge density of about 40 to about 200 C/mm 3 and a water solubility of at least 400 g/L; (d) one or more anionic polymers; (e) one or more water soluble solvents; and (f) water. The cleansing compositions have a unique lamellar liquid crystal structure and are useful in methods for cleansing the body, including the skin and hair.

Inventors

• LIN, Hungta
• VU, TRUNG
• BUI, HY SI
• HASEBE, MARIKO
• SINHA, RITESH KUMAR

Assignees

• L'OREAL

Dates

Publication Date

20260506

Application Date

20240625

Claims (20)

1. 1. A cleansing composition comprising: (a) about 5 to about 25 wt.% of one or more anionic surfactants; (b) about 1 to about 10 wt.% of one or more nonionic emulsifiers having a Hydrophile-Lipophile Balance (HLB) of about 6 or less; (c) about 0.05 to about 5 wt.% of one or more salts providing divalent cations having a charge density of about 40 to about 200 C/mm 3 and a water solubility of at least 400 g/L; (d) about 0.5 to about 6 wt.% of one or more anionic polymers; (e) about 10 to about 55 wt. % of one or more water soluble solvents; and (f) about 15 to about 65 wt. % of water; wherein all percentages by weight are based on a total weight of the compositions.
2. 2. The cleansing composition of claim 1 , wherein at least one of the one or more anionic surfactants is a sulfate surfactant selected alkyl sulfates, alkyl ether sulfates, or a combination thereof.
3. 3. The composition of claim 1 , wherein at least one of the one or more nonsulfate anionic surfactants is selected from acyl amino acid surfactants, alkyl sulfonates, acyl isethionates, alkyl sulfosuccinates, alkyl sulfoacetates, alkoxylated monoacids, salts thereof, or mixtures thereof.
4. 4. The cleansing composition of claim 3, wherein at least one of the one or more non-sulfate anionic surfactants is an acyl amino acid surfactant selected from one or more acyl sarcosinates, acyl taurates, acyl glycinates, acyl glutamates, salts thereof, or a combination thereof.
5. 5. The cleansing composition of claim 4, wherein at least one of the one or more acyl amino acid surfactants is an acyl glycinate selected from sodium cocoyl glycinate, sodium lauroyl glycinate, sodium myristoyl glycinate, potassium lauroyl glycinate, potassium cocoyl glycinate, or a combination thereof.
6. 6. The cleansing composition of claim 4, wherein at least one of the one or more acyl amino acid surfactants is an acyl taurate selected from sodium cocoyl taurate, sodium methyl cocoyl taurate, disodium cocoyl taurate, or a combination thereof.
7. 7. The cleansing composition of claim 4, wherein at least one of the one or more acyl amino acid surfactants is an acyl glutamate selected from dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium capryloyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate, sodium undecylenoyl glutamate, triethanolamine mono-cocoyl glutamate, triethanolamine lauroylglutamate, disodium cocoyl glutamate, or a combination thereof.
8. 8. The cleansing composition of claim 3, wherein at least one of the one or more non-sulfate anionic surfactants is an alkyl sulfonate selected from alkyl aryl sulfonates, primary alkane disulfonates, alkene sulfonates, hydroxyalkane sulfonates, alkyl glyceryl ether sulfonates, alpha-olefinsulfonates, sulfonates of alkylphenolpolyglycol ethers, alkylbenzenesulfonates, phenylalkanesulfonates, alpha-olefinsulfonates, olefin sulfonates, alkene sulfonates, hydroxyalkanesulfonates and disulfonates, secondary alkanesulfonates, paraffin sulfonates, ester sulfonates, sulfonated fatty acid glycerol esters, and alpha-sulfo fatty acid methyl esters, or a combination thereof.
9. 9. The cleansing composition of claim 3, wherein at least one of the one or more acyl isethionate surfactants is selected from sodium isethionate, sodium cocoyl isethionate, sodium lauroyl methyl isethionate, sodium cocoyl methyl isethionate, or a combination thereof.
10. 10. The cleansing composition of claim 3, wherein at least one of the one or more non-sulfate anionic surfactant is an alkyl sulfosuccinate selected from disodium oleamido MIPA sulfosuccinate, disodium oleamido MEA sulfosuccinate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, diammonium lauryl sulfosuccinate, diammonium laureth sulfosuccinate, dioctyl sodium sulfosuccinate, disodium oleamide MEA sulfosuccinate, sodium dialkyl sulfosuccinate, or a mixture thereof.
11. 11 . The cleansing composition of claim 3, wherein at least one of the one or more non-sulfate anionic surfactants is an alkyl sulfoacetate selected from C4-C18 fatty alcohol sulfoacetates.
12. 12. The composition of claim 1 , wherein the one or more salts having a divalent cation are magnesium salts, calcium salts, or a combination thereof.
13. 13. The composition of claim 6, wherein the one or more salts providing divalent cations are selected from magnesium chloride, calcium chloride, magnesium sulfate, magnesium thiosulfate, calcium sulfate, calcium thiosulfate, magnesium pyrrolidone carboxylate (magnesium pidolate), zinc sulfate, calcium pyrrolidone carboxylate (calcium pidolate), magnesium gluconate, or a combination thereof.
14. 14. The composition of claim 1 , wherein the one or more emulsifiers having an HLB of about 6 or less are selected from sorbitan esters, glyceryl esters, polyglyceryl esters, glycol esters, sucrose esters, methyl glucose esters, ethoxylated methyl glucose esters, or a combination thereof.
15. 15. The composition of claim 14, wherein at least one of the one or more nonionic emulsifiers having an HLB of about 6 is a glycol ester selected from glycol distearate, glycol hydroxystearate, glycol oleate, glycol ricinoleate, glycol stearate, propylene glycol isostearate, propylene glycol hydroxystearate, propylene glycol laurate, propylene glycol myristate, propylene glycol oleate, propylene glycol ricinioleate, propylene glycol stearate, or combinations thereof.
16. 16. The composition of claim 1 , wherein the one or more anionic polymers are selected from carboxyvinylpolymers, acrylates copolymers, sulfonate copolymers, and carboxymethylcellulose, and mixtures thereof; and/or the anionic polymers are selected from copolymers of two or more monomers selected from acrylic acid, methacrylic acid, vinyl monomers, and (meth)acrylamide.
17. 17. The composition of claim 1 , wherein the one or more water soluble solvents are selected from glycerin, C2-C6 mono-alcohols, polyols (polyhydric alcohols), glycols, and a mixture thereof.
18. 18. The composition of claim 1 , wherein the composition has a lamellar liquid crystal structure.
19. 19. A cleansing composition comprising: (a) about 5 to about 25 wt.% of one or more anionic surfactants; (b) about 1 to about 10 wt.% of one or more nonionic emulsifiers having a Hydrophile-Lipophile Balance (HLB) of about 6 or less, wherein at least one of the one or more nonionic emulsifiers is a glycol ester; (c) about 0.1 to about 3 wt.% of one or more salts providing a divalent cation selected from magnesium salts, calcium salts, or a combination thereof; (d) about 0.2 to about 4 wt.% of one or more anionic polymers selected from copolymers of two or more monomers selected from acrylic acid, methacrylic acid, vinyl monomers, and (meth)acrylamide; wherein (c) and (d) are in a weight ratio of about 1 .5:1 to about 1 :5 ((c):(d)); (e) about 25 to about 50 wt.% of one or more water soluble solvents selected from glycerin, C2-C6 mono-alcohols, polyols (polyhydric alcohols), glycols, and a mixture thereof; (f) about 25 to about 50 wt. % of water; (g) optionally, about 0.1 to about 10 wt.% of one or more miscellaneous ingredients; wherein all percentages by weight are based on a total weight of the compositions; the composition is essentially free from sulfate-based surfactants; and the composition has a lamellar liquid crystal structure.
20. 20. A method for cleansing skin comprising applying the cleansing composition of claim 1 to the skin and rinsing the composition from the skin.

Description

TITLE CLEANSING COMPOSITIONS COMPRISING DIVALENT SALTS CROSS-REFERENCE TO RELATED APPLICATIONS This application claims benefit of U.S. Serial No. 18/344,204, filed June 29, 2023, and benefit of French Application No. FR 2309818, filed on September 18, 2023, which are incorporated herein by reference in their entirety. FIELD OF THE DISCLOSURE The present disclosure relates to cleansing compositions and methods for cleansing the hair or body with the compositions. BACKGROUND Most “dirt” contains traces of oil and grease, which stick to the surface of the skin and hair. Rinsing with only water is not sufficient to adequately remove the oil and grease. The main functional ingredients in cleansing compositions are surfactants. Surfactants interact with water, thereby allowing it to “wet” surfaces more efficiently. The surfactant-water combination is then able to surround the specks of dirt and carry them away with rinsing. Agitation of the water solution, for example by rubbing hands together during washing or lathering shampoo into hair, also aids the process of removing dirt. Conventional cleansing compositions such as shampoos, for example, contain surfactants in various amounts. Anionic surfactants are typically included because they provide foaming to a composition. Nonionic surfactants may also be included to provide cleansing, solubilizing, and dispersing properties but are usually less irritating than anionic surfactants. Nonionic surfactants, however, often exhibit less foaming ability and do not provide any enhancement to viscosity (e.g., often a composition is thinner and runnier with increased amounts of nonionic surfactants). In some cleansing applications, higher viscosity is desired for the product's handling or ease of application. In addition, higher viscosity personal care products are more aesthetically appealing to many consumers. The development of cleansing compositions has been driven by a need for certain performance properties that consumers find desirable. For example, consumers seek cleansing compositions that foam and cleanse well, have a certain “thickness” (viscosity), and are mild to the skin and hair. The cleansing compositions should also rinse away from the body with ease. However, the addition of a particular component to a cleansing composition often will enhance one desired property to the detriment of another desired property. It is therefore difficult to achieve a perfect balance of desirable performance properties. SUMMARY OF THE DISCLOSURE The present disclosure is drawn to cleansing compositions containing a unique combination of divalent salts, nonionic emulsifiers having a low Hydrophile- Lipophile Balance (HLB), and non-hydrophobically modified anionic polymers. The inventors discovered that divalent cations in combination with non-hydrophobically modified anionic polymers imparts viscosity, stability, and hydrating properties to cleansing composition that include anionic surfactants. The cleansing compositions have a unique microstructure, resulting in pleasant creamy texture, which is surprisingly stable. During use, the compositions provide a high degree of foam, are gentle, and leave the skin and hair hydrated. The cleansing composition typically includes: (a) one or more anionic surfactants; (b) one or more nonionic emulsifiers having a Hydrophile-Lipophile Balance (HLB) of about 6 or less; (c) one or more salts providing divalent cations having a charge density of about 40 to about 200 C/mm3 and a water solubility of at least 400 g/L; (d) one or more anionic polymers; and (e) one or more water soluble solvents; and (f) water; wherein all percentages are based on a total weight of the composition. Nonlimiting examples of sulfate surfactants include alkyl sulfates and alkyl ether sulfates. Nonlimiting examples of alkyl sulfates include sodium lauryl sulfate (SLS), sodium dodecyl sulfate (SDS), or a combination thereof. A non-limiting example of an alkyl ether sulfate includes sodium lauryl ether sulfate (SLES). Nonlimiting examples of non-sulfate anionic surfactants include acyl isethionates, acyl amino acids (such as acyl taurates, acyl glycinates, acyl glutamates, and acyl sarcosinates), alkyl sulfonates, alkyl sulfosuccinates, alkyl sulfoacetates, alkoxylated monoacids, salts thereof, and a combination thereof. In a preferred embodiment, at least one of the one or more non-sulfate anionic surfactants is an alkyl sulfonate. Nonlimiting examples of alkyl sulfonates include Cs-Ci6 alkyl benzene sulfonates, C10-C20 paraffin sulfonates, C10-C24 olefin sulfonates, salts thereof, and combinations thereof. C10-C24 olefin sulfonates are particularly preferred. A non-limiting but particularly useful example of a C10-C24 olefin sulfonate that can be used in the instant compositions is sodium C14-C16 olefin sulfonate, or a combination thereof. The cleansing composition includes one or more nonionic emulsifiers having a Hydrophile-Lipophile Balance (HLB) of about 6 or