# US 8,772,224 B2 · Perfuming solution stabilized with respect to ultraviolet radiation

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- Number: US 8,772,224 B2
- Document ID: US8772224B2
- Status: Granted
- Kind: B2
- Application number: 13/554,228
- Filed: 2012-07-20
- Published: 2013-02-21
- Granted: 2014-07-08
- Earliest claimed: 2011-07-21
- Assignees: Lvmh Recherche
- Applicants: Sylvie Germaneau; Valerie Alard; Eric Perrier; Maud Guyot
- Inventors: Sylvie Germaneau; Valerie Alard; Eric Perrier; Maud Guyot
- Web page: https://patentgrep.com/patent/US8772224B2

## CPC

- A61K 8/34: Alcohols
- A61K 8/35: Ketones, e.g. benzophenone
- A61K 8/37: Esters of carboxylic acids
- A61K 8/375: {the alcohol moiety containing more than one hydroxy group}
- A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61Q 13/00: Formulations or additives for perfume preparations (essential oils or perfumes per se C11B9/00)
- 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

The invention relates to a perfuming solution comprising a volatile alcohol, a perfume and a mixture for stabilizing said perfume consisting of at least one UV filter selected from the derivatives of cinnamate, at least one UV filter selected from the derivatives of dibenzoylmethane, and at least one non-volatile oil that is soluble in said alcohol and is a solvent for said filters, the stabilizing mixture being in sufficient amount to protect the perfuming solution from degradation by UV radiation.

## Claims

### Claim 1

Perfuming solution comprising at least one volatile alcohol, a perfume and a mixture for stabilizing said solution, the stabilizing mixture consisting of
at least one first UV filter selected from derivatives of cinnamate,
at least one second UV filter selected from derivatives of dibenzoylmethane, and
at least one non-volatile oil selected from the group consisting of aliphatic mono- and diesters, non-hydroxylated aromatic esters, aliphatic carbonates and phenylated silicones, the stabilizing mixture being in a sufficient amount to protect the odor of the perfuming solution from degradation by UV radiation,
wherein the perfuming solution comprises no UV filters other than the first and second UV filters in the stabilizing mixture,
wherein the volatile alcohol or alcohols are present in amounts in the range from 40 to 95 wt. % relative to the total weight of the solution,
wherein the UV filter selected from the derivatives of cinnamate represents from 20 to 90 wt. % of the weight of the stabilizing mixture,
wherein the UV filter selected from the derivatives of dibenzoylmethane represents from 5 to 75 wt. % of the weight of the stabilizing mixture, and
wherein the non-volatile oil represents from 10 to 20 wt. % of the weight of the stabilizing mixture.

### Claim 2 (depends on 1)

Perfuming solution according to claim 1, wherein the volatile alcohol is selected from the monohydric alcohols having from 1 to 5 carbon atoms and in particular from methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, t-butanol, and mixtures thereof.

### Claim 3 (depends on 1)

Perfuming solution according to claim 1, wherein the volatile alcohol or alcohols are present in amounts in the range from 55 to 80 wt. % relative to the total weight of the solution.

### Claim 4 (depends on 1)

Perfuming solution according to claim 1, wherein the UV filter selected from the derivatives of cinnamate is ethyl-2-hexyl-p-methoxycinnamate, isopropyl-p-methoxycinnamate, isoamyl methoxycinnamate, cinoxate (2-ethoxyethyl-p-methoxycinnamate), diethanolamine methoxycinnamate, glyceryl ethyl-2-hexanoate di-p-methoxycinnamate or [4-bis(trimethylsiloxy)methylsilyl-3-methylbutyl]-3,4,5-trimethoxycinnamate.

### Claim 5 (depends on 1)

Perfuming solution according to claim 1, wherein the UV filter selected from the derivatives of cinnamate represents from 30 to 75 wt. %, of the weight of the stabilizing mixture.

### Claim 6 (depends on 1)

Perfuming solution according to claim 1, wherein the UV filter selected from the derivatives of cinnamate represents from 0.3 to 0.4 wt. % of the weight of the perfuming solution.

### Claim 7 (depends on 1)

Perfuming solution according to claim 1, wherein the UV filter selected from the derivatives of dibenzoylmethane is 2-methyldibenzoylmethane, 4-methyldibenzoylmethane, 4-isopropyldibenzoylmethane, 4-tert-butyldibenzoylmethane, 2,4-dimethyldibenzoylmethane, 2,5-dimethyldibenzoylmethane, 4,4′-diisopropyldibenzoylmethane, 4,4′-dimethoxydibenzoylmethane, 4-tert-butyl-4′-methoxydibenzoylmethane, 2-methyl-5-isopropyl-4′-methoxydibenzoylmethane, 2-methyl-5-tert-butyl-4′-methoxydibenzoylmethane, 2,4-dimethyl-4′-methoxydibenzoylmethane or 2,6-dimethyl-4-tert-butyl-4′-methoxydibenzoylmethane.

### Claim 8 (depends on 1)

Perfuming solution according to claim 1, wherein the UV filter selected from the derivatives of dibenzoylmethane represents from 10 to 55 wt. %, of the weight of the stabilizing mixture.

### Claim 9 (depends on 1)

Perfuming solution according to claim 1, wherein the UV filter selected from the derivatives of dibenzoylmethane represents from 0.05 to 0.1 wt. % of the weight of the perfuming solution.

### Claim 10 (depends on 1)

Perfuming solution according to claim 1, wherein the non-volatile oil is selected from a group consisting of isononyl isononanoate, butylene glycol dicaprylate/dicaprate, phenyltrimethicone, diisostearyl malate, C12-C15 alkyl-benzoate, and dicapryl carbonate.

### Claim 11 (depends on 1)

Perfuming solution according to claim 1, wherein the non-volatile oil represents from 0.001 to 1 wt. % of the perfuming solution.

### Claim 12 (depends on 1)

Perfuming solution according claim 1, wherein the stabilizing mixture represents from 0.01 to 10 wt. % of the weight of the perfuming solution.

### Claim 13 (depends on 1)

Perfuming solution according to claim 1, wherein the total amount of UV filters in the perfuming solution represents from 0.005 to 5 wt. % of the weight of the perfuming solution.

### Claim 14 (depends on 1)

Method for protecting a perfuming solution from degradation of its odor by UV radiation, comprising adding to the solution a sufficient amount of a stabilizing mixture consisting of at least one UV filter derived from cinnamate, at least one UV filter derived from dibenzoylmethane, and at least one oil selected from the group consisting of butylene glycol dicaprylate/dicaprate, phenyltrimethicone, diisostearyl malate, isononyl isononanoate and dicapryl carbonate, to form the perfuming solution according to claim 1.