# US 9,750,671 B2 · Personal care compositions and methods

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- Number: US 9,750,671 B2
- Document ID: US9750671B2
- Status: Granted
- Kind: B2
- Application number: 15/412,341
- Filed: 2017-01-23
- Published: 2017-05-11
- Granted: 2017-09-05
- Earliest claimed: 2014-06-30
- Assignees: The Procter & Gamble Company
- Applicants: The Procter & Gamble Company
- Inventors: Jonathan Robert Cetti; Jiten Odhavji Dihora; Steven Edward Witt; Eric Shane Henley
- Web page: https://patentgrep.com/patent/US9750671B2

## CPC

- A61K 8/28: Zirconium; Compounds thereof
- A61K 8/0229: {Sticks}
- A61K 8/11: Encapsulated compositions
- A61K 8/25: Silicon; Compounds thereof
- A61K 8/26: Aluminium; Compounds thereof
- A61K 8/31: Hydrocarbons
- A61K 8/33: containing oxygen
- A61K 8/342: {Alcohols having more than seven atoms in an unbroken chain}
- A61K 8/37: Esters of carboxylic acids
- A61K 8/42: Amides
- A61K 8/498: {having 6-membered rings or their condensed derivatives, e.g. coumarin}
- A61K 8/585: {Organosilicon compounds}
- A61K 8/60: Sugars; Derivatives thereof
- A61K 8/65: Collagen; Gelatin; Keratin; Derivatives or degradation products thereof
- A61K 8/732: {Starch; Amylose; Amylopectin; Derivatives thereof}
- A61K 8/738: {Cyclodextrins}
- A61K 8/8147: {Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers}
- A61K 8/8152: {Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers}
- A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K 8/92: Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
- A61K 8/922: {of vegetable origin}
- A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00)
- B01J 13/125: {by evaporation of the solvent (apparatus therefor B01J13/043)}
- A61K 2800/31: Anhydrous
- A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns
- A61K 2800/56: Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
- A61K 2800/592: Mixtures of compounds complementing their respective functions
- A61K 2800/652: The particulate/core comprising organic material
- A61K 2800/654: The particulate/core comprising macromolecular material
- A61K 2800/805: Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

Methods of making personal care compositions including microcapsules and methods of enhancing the efficacy of the microcapsules in said personal care compositions.

## Claims

### Claim 1

An anhydrous stick antiperspirant composition, comprising:
a) an antiperspirant active selected from the group consisting of aluminum zirconium tetrachlorohydrex and aluminum zirconium trichlorhydrex, wherein the antiperspirant active has a concentration from 10% to about 35% by weight of the composition;
b) one or more anhydrous liquid carriers;
c) one or more structurants having a concentration from about 15% to about 25% by weight of the composition, wherein the one or more structurants comprises one or more waxes;
d) a non-ionic exthoxylated linear alcohol having a carbon chain length from about 20 to about 40; and
e) a fragrance delivery system comprising starch;
wherein the solid stick antiperspirant composition is a single phase.

### Claim 2 (depends on 1)

The anhydrous stick of claim 1, wherein the one or more anhydrous liquid carriers comprises a volatile silicone.

### Claim 3 (depends on 1)

The anhydrous stick of claim 1, wherein the anhydrous stick composition is a soft-solid antiperspirant or an invisible solid antiperspirant.

### Claim 4 (depends on 1)

The anhydrous stick of claim 1, wherein the starch comprises a raw starch, pregelatinized starch, modified starch, or combination thereof.

### Claim 5 (depends on 4)

The anhydrous stick of claim 4, wherein the modified starch is a corn starch.

### Claim 6 (depends on 5)

The anhydrous stick of claim 5, wherein the modified corn starch is an octenyl succinate.

### Claim 7 (depends on 6)

The anhydrous stick of claim 6, wherein the octenyl succinate comprises a substituted waxy corn starch.