Mascara composition and method

• US 10,064,808 B2
• Filed: 11/17/2016
• Issued: 09/04/2018
• Est. Priority Date: 11/17/2015
• Status: Active Grant

• Current Assignee: ELC Management LLC (The Estee Lauder Companies Inc.)
• Original Assignee: ELC Management LLC (The Estee Lauder Companies Inc.)
• Inventors: Lee, Wilson A.
• Primary Examiner(s): Azpuru, Carlos A
• Application Number:
  US15/354,828
• Publication Number:
  US 20170135940A1
• Time in Patent Office: 656 Days
• CPC Class Codes: A61K 2800/63 More than one coating
• CPC Class Codes: A61K 8/027 Fibers; Fibrils
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/817 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
• CPC Class Codes: A61K 8/87 Polyurethanes
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61Q 1/10 for eyes, e.g. eyeliner, mascara

Abstract

Cationically-charged particulates and compositions containing the cationically-charged particulates for application to keratinous materials are provided. Methods of preparing the cationically-charged particulates are also disclosed.

Claims

1. A method of treating particulates comprising:

(a) encapsulating particulates in a first, inner coating comprising a cationically charged material in an amount sufficient to impart a cationic charge in the range of from about 0.1 mV to about 400 mV to the particulates; and

(b) encapsulating the particulates of (a) in a second, outer coating comprising a film former material in an amount sufficient to render the encapsulated particulates hydrophobic, wherein the particulates retain the cationic charge in the range of from about 0.1 mV to about 400 mV;

wherein step (a) comprises introducing particulates to a microfluidizer and subjecting the particulates to at least one spray coating operation with a first composition comprising a water-soluble or water-dispersible cationically-charged material, followed by subjecting the cationically-charged particulates to at least one drying step;

wherein step (b) comprises subjecting the cationically-charged particulates of (a) to at least one spray coating operation with a second composition comprising a film former material in an amount sufficient to further render the cationically-charged particulates hydrophobic, followed by at least one drying step; and

wherein a weight ratio of the first composition to the particulates is in the range of from about 0.1;

1 to about 5;

1.

2. The method of claim 1, wherein prior to step (b), the cationically-charged particulates are subjected to at least one further spray coating operation with a composition comprising a water-soluble or water-dispersible cationically charged material, a water-soluble or water-dispersible anionically charged material, or both, the at least one further spray coating operation followed by at least one drying operation.

3. The method of claim 1, wherein the weight ratio of the first composition to the particulates is in the range of from about 0.1:

1 to about 2;

1.

4. The method of claim 2, wherein a weight ratio of the second composition to the cationically-charged particulates is in the range of from about 0.1:

1 to about 60;

1.

5. The method of claim 4, wherein the weight ratio of the second composition to the cationically-charged particulates is in the range of from about 0.1:

1 to about 30;

1.

6. The method of claim 1, wherein the cationically-charged material comprises a naturally-derived or a synthetic cationic polymer.

7. The method of claim 6, wherein the naturally-derived cationic polymer comprises a cationically charge-modified derivative of at least one of guar gum, cellulose, a protein, a polypeptide, chitosan, lanolin, or a starch.

8. The method of claim 7, wherein the synthetic cationic polymer comprises polyquaternium-4, polyquaternium-5, polyquaternium-6, polyquaternium-10, polyquaternium-39, polyquaternium-44, polyquaternium-46, distearyldimonium chloride, cinnamidopropyltrimonium chloride, cetrimonium chloride, and guar hydroxypropyltrimonium chloride, or a combination of any two or more thereof.

9. The method of claim 8, wherein the synthetic cationic polymer comprises polyquaternium-6.

10. The method of claim 1, wherein the cationically-charged material comprises iron oxide.

11. The method of claim 1, wherein the film former material comprises a silicone, an acrylates polymer, an acrylates copolymer, a polyvinylpyrrolidone (PVP) derivative, a polyurethane, a polyvinyl amine, a polyvinyl acetate, sucrose acetate isobutyrate, or a combination of any two or more thereof.

12. The method of claim 1, wherein the film former material comprises dimethicone and trimethylsiloxy silicate;

dimethicone, trimethylsiloxysilicate and polyglyceryl-3 disiloxane dimethicone;

or polyurethane.

13. The method of claim 1, wherein the particulates are in the form of naturally-derived powder particulates, naturally-derived fibers, or a combination thereof.

14. The method of claim 13, wherein the particulates are derived from cellulose, cellulose (and) magnesium stearate, polylactic acid, cotton, linen, rayon, or a combination of any two or more thereof.

15. The method of claim 14, wherein the particulates are in the form of fibers having a length in the range of from about 1 micrometer to about 4 millimeters and a weight in the range of from about 3 to about 20 denier.

16. The method of claim 15, wherein the fibers have a length in the range of from about 1 to 2 millimeters and a weight in the range of from about 5 to about 10 denier.

17. The method of claim 13, wherein the fibers have a cross-sectional shape which is round, oval, triangular, hexagonal, heart-shaped, star-shaped, or a combination of any two or more thereof.

18. The method of claim 2, wherein the water-soluble or water-dispersible cationically charged material is grape seed extract.

19. A method of treating particulates comprising:

(a) encapsulating particulates in a first, inner coating comprising a cationically charged material in an amount sufficient to impart a cationic charge in the range of from about 0.1 mV to about 400 mV to the particulates; and

(b) encapsulating the particulates of (a) in a second, outer coating comprising a film former material in an amount sufficient to render the encapsulated particulates hydrophobic, wherein the particulates retain the cationic charge in the range of from about 0.1 mV to about 400 mV;

wherein step (a) comprises introducing particulates to a microfluidizer and subjecting the particulates to at least one spray coating operation with a first composition comprising a water-soluble or water-dispersible cationically-charged material, followed by subjecting the cationically-charged particulates to at least one drying step;

wherein step (b) comprises subjecting the cationically-charged particulates of (a) to at least one spray coating operation with a second composition comprising a film former material in an amount sufficient to further render the cationically-charged particulates hydrophobic, followed by at least one drying step;

wherein prior to step (b), the cationically-charged particulates are subjected to at least one further spray coating operation with a composition comprising a water-soluble or water-dispersible cationically charged material, a water-soluble or water-dispersible anionically charged material, or both, the at least one further spray coating operation followed by at least one drying operation; and

wherein a weight ratio of the second composition to the cationically-charged particulates is in the range of from about 0.1;

1 to about 60;

1.

20. A method of treating particulates comprising:

(a) encapsulating particulates in a first, inner coating comprising a cationically charged material in an amount sufficient to impart a cationic charge in the range of from about 0.1 mV to about 400 mV to the particulates; and

(b) encapsulating the particulates of (a) in a second, outer coating comprising a film former material in an amount sufficient to render the encapsulated particulates hydrophobic, wherein the particulates retain the cationic charge in the range of from about 0.1 mV to about 400 mV;

wherein the particulates are in the form of naturally-derived powder particulates, naturally-derived fibers, or a combination thereof; and

wherein the particulates are derived from cellulose, cellulose (and) magnesium stearate, polylactic acid, cotton, linen, rayon, or a combination of any two or more thereof

wherein a weight ratio of the first composition to the particulates is in the range of from about 0.1;

1 to about 5;

1.