# US 12,109,282 B2 · Deodorant compositions with metal oxides

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- Number: US 12,109,282 B2
- Document ID: US12109282B2
- Status: Granted
- Kind: B2
- Application number: 17/409,946
- Filed: 2021-08-24
- Published: 2022-02-24
- Granted: 2024-10-08
- Earliest claimed: 2020-08-24
- Assignees: The Procter & Gamble Company
- Applicants: The Procter & Gamble Company
- Inventors: David Arthur Sturgis; Lindsey Michelle Britt; Mahmoud Daffalla Eljack
- Web page: https://patentgrep.com/patent/US12109282B2

## CPC

- A61K 8/19: containing inorganic ingredients
- A61K 8/0229: {Sticks}
- A61K 8/31: Hydrocarbons
- A61K 8/342: {Alcohols having more than seven atoms in an unbroken chain}
- A61K 8/37: Esters of carboxylic acids
- A61K 8/375: {the alcohol moiety containing more than one hydroxy group}
- A61K 8/585: {Organosilicon compounds}
- A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K 8/922: {of vegetable origin}
- A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00)
- A61K 2800/30: Characterized by the absence of a particular group of ingredients
- A61K 2800/31: Anhydrous
- A61K 2800/591: Mixtures of compounds not provided for by any of the codes A61K2800/592 - A61K2800/596
- 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

## Abstract

A deodorant composition comprising a metal oxide; a primary emollient; and at least one wax with a melting point above 50° C.: wherein the composition is anhydrous and aluminum-free; and wherein the composition has a pH greater than about 8.0 at 60 minutes as measured by the pH Release Test Method.

## Claims

### Claim 1

A homogeneous deodorant stick composition comprising:
a. a metal oxide;
b. a primary emollient; and
c. at least one wax with a melting point above 50° C.;
wherein the composition is anhydrous and aluminum-free;
wherein the composition is free of calcium hydroxide;
wherein the composition has a pH greater than about 8.0 at 60 minutes as measured by the pH Release Test Method; and
wherein the composition has a hardness penetration less than 200 mm*10 as measured by the Hardness Test Method.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the metal oxide is chosen from magnesium oxide, calcium oxide, or mixtures thereof.

### Claim 3 (depends on 1)

The composition of claim 1, further comprising an additional antimicrobial chosen from piroctone olamine, beryllium carbonate, magnesium carbonate, calcium carbonate, magnesium hydroxide, magnesium hydroxide and magnesium carbonate hydroxide, partially carbonated magnesium hydroxide, piroctone olamine potassium carbonate, potassium bicarbonate, sodium carbonate, sodium sesquicarbonate, sodium bicarbonate, hexamidine, zinc carbonate, thymol, polyvinyl formate, salycilic acid, niacinamide, magnesium carbonate hydroxide, cinnamon essential oil, cinnamon bark essential oil, cinnamic aldehyde, zinc oxide, or mixtures thereof.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the composition has a pH greater than about 9.0 at 60 minutes as measured by the pH Release Test Method.

### Claim 5 (depends on 1)

The composition of claim 1, wherein the composition has a pH greater than about 9.5 at 60 minutes as measured by the pH Release Test Method.

### Claim 6 (depends on 1)

The composition of claim 1, wherein the primary emollient is chosen from a silicone and/or a liquid triglyceride.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the at least one wax is chosen from an ester wax, ozokerite, paraffin wax, a fatty alcohol, or mixtures thereof.

### Claim 8 (depends on 2)

The composition of claim 2, wherein the metal oxide is magnesium oxide.

### Claim 9 (depends on 1)

The composition of claim 1, wherein the primary emollient is a liquid triglyceride, and wherein the liquid triglyceride is chosen from caprylic/capric triglyceride, triheptanoin, or mixtures thereof.

### Claim 10 (depends on 1)

The composition of claim 1, wherein the primary emollient is a liquid triglyceride having a chain length from C8 to C10.

### Claim 11

A homogeneous deodorant stick composition comprising:
a. a metal oxide;
b. a primary emollient chosen from a silicone and/or a liquid triglyceride; and
c. at least one wax with a melting point above 50° C., chosen from an ester wax, ozokerite, paraffin wax, a fatty alcohol, or mixtures thereof;
wherein the composition is anhydrous and aluminum-free;
wherein the composition is free of calcium hydroxide;
and wherein the composition has a pH greater than about 8.0 at 60 minutes as measured by the pH Release Test Method; and
wherein the composition has a hardness penetration less than 200 mm*10 as measured by the Hardness Test Method.

### Claim 12 (depends on 11)

The composition of claim 11, wherein the metal oxide is chosen from magnesium oxide, calcium oxide, or mixtures thereof.

### Claim 13 (depends on 11)

The composition of claim 11, further comprising an additional antimicrobial chosen from piroctone olamine, beryllium carbonate, magnesium carbonate, calcium carbonate, magnesium hydroxide, magnesium hydroxide and magnesium carbonate hydroxide, partially carbonated magnesium hydroxide, piroctone olamine potassium carbonate, potassium bicarbonate, sodium carbonate, sodium sesquicarbonate, sodium bicarbonate, hexamidine, zinc carbonate, thymol, polyvinyl formate, salycilic acid, niacinamide, magnesium carbonate hydroxide, cinnamon essential oil, cinnamon bark essential oil, cinnamic aldehyde, zinc oxide or mixtures thereof.

### Claim 14 (depends on 11)

The composition of claim 11, wherein the composition has a pH greater than about 9.0 at 60 minutes as measured by the pH Release Test Method.

### Claim 15 (depends on 11)

The composition of claim 11, wherein the composition has a pH greater than about 9.5 at 60 minutes as measured by the pH Release Test Method.

### Claim 16 (depends on 11)

The composition of claim 11, wherein the primary emollient is a liquid triglyceride having a chain length from C8 to C10.

### Claim 17 (depends on 10)

The composition of claim 10, wherein the composition comprises at least about 20% by weight of the liquid triglyceride.

### Claim 18 (depends on 16)

The composition of claim 16, wherein the composition comprises at least about 20% by weight of the liquid triglyceride.
