Solubilizing systems for flavors and fragrances

• US 20060084589A1
• Filed: 10/19/2005
• Published: 04/20/2006
• Est. Priority Date: 10/20/2004
• Status: Abandoned Application

• Current Assignee: Firmenich SA
• Original Assignee: Firmenich SA
• Inventors: Wong, Kenneth, Herd, Thomas, Daugeron, Aude, Vlad, Florin Joseph, Mounier, Remy
• Application Number:
  US11/255,032
• Publication Number:
  US 20060084589A1
• Time in Patent Office: Days
• US Class Current: 510/417
• CPC Class Codes: A61L 9/012 characterised by being in a special form, e.g. gels, emulsions A61L9/048 takes precedence
• CPC Class Codes: C11D 1/22 derived from aromatic compounds
• CPC Class Codes: C11D 17/0021 Aqueous microemulsions
• CPC Class Codes: C11D 3/0068 Deodorant compositions
• CPC Class Codes: C11D 3/2079 Monocarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2082 Polycarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2086 Hydroxy carboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2096 Heterocyclic compounds
• CPC Class Codes: C11D 3/28 Heterocyclic compounds containing nitrogen in the ring
• CPC Class Codes: C11D 3/33 Amino carboxylic acids
• CPC Class Codes: C11D 3/3409 Alkyl -, alkenyl -, cycloalkyl - or terpene sulfates or sulfonates
• CPC Class Codes: C11D 3/50 Perfumes
• CPC Class Codes: D06M 13/005 Compositions containing perfumes; Compositions containing deodorants

Abstract

The present invention provides compositions and clear oil-in-water microemulsion containing up to 80% w/w of an oil, a surfactant system, a w/w oil/surfactant system ratio between 1 and 3, and a solubilizing-aid ingredient which is not a surfactant neither a VOC compound, the latter being present in an amount sufficient to ensure that the ratio oil/(surfactant +solubilizing aid) is comprised between 0.1 and 5. The present invention concerns also the articles and products associated the compositions and microemulsions, and the methods to manufacture them.

Claims

1. An oil containing composition comprising:

A) from 0.01 to 80% w/w of an oil;

B) a surfactant system (S) in an amount such that the concentration ratio oil/surfactant is comprised between 1 and 3;

C) a solubilizing-aid ingredient selected from the group consisting of the ammonium, alkaline and alkaline earth salts of;

i) a C₅-C₁₀ compound comprising an aromatic or non aromatic five or six member heterocyclic ring and one or two carboxylic functional groups;

ii) a C₂-C₇ linear, branched or cyclic mono-, di- or tri-carboxylic acid;

iii) benzoic, hydroxyl-benzoic or amino-benzoic acid, a C₈-C₁₂ benzoic, hydroxyl-benzoic or amino-benzoic acid substituted by one or two C₁-C₅ alkyl groups;

iv) benzene-sulfonic acid, a C₇-C₁₁ benzene-sulfonic acid substituted by one or two C₁-C₅ alkyl groups, optionally hydroxylated naphthalene-sulfonic acid, an optionally hydroxylated C₁₁-C₁₆ naphthalene-sulfonic acid substituted by one or two C₁-C₅ alkyl groups;

v) a halide, ascorbate, bicarbonate, thiocyanate; and

vi) mixtures thereof;

D) optionally water;

and wherein the ratio between the amount of oil (O) and the total amount of surfactant system (S) plus solubilizing-aid (SA) ingredient is comprised between 0.1 and 5.

2. The composition according to claim 1, in the form of a clear microemulsion comprising at least 10% by weight of water.

3. The composition according to claim 1, which comprises a surfactant system containing one or more anionic surfactants and one or more non-ionic surfactants.

4. The composition according to claim 3, wherein the amount of anionic surfactant or surfactants is at least 50% by weight of the total weight of the surfactant system.

5. The composition according to claim 3, wherein the amount of non-ionic surfactant or surfactants is at least 50% by weight of the total weight of surfactant system.

6. The composition according to claim 3, in the form of a clear microemulsion characterized by a surface tension, measured at 25°

C., comprised between 20 and 30 mN/m

7. The composition according to claim 3, wherein the oil is a perfume, a flavor, an antibacterial agent, a nutraceutical ingredient or a nutritional supplement oil, a cosmetically active agent.

8. The composition according to claim 7, wherein the oil comprises at least 75% by weight of a perfume, and preferably at least 90% by weight of a perfume, relative to the weight of oil.

9. The composition according to claim 8, wherein said perfume contains from 5% w/w to 99% w/w of terpenes and/or from 5 to 30% w/w of musks.

10. The composition according to claim 2, comprising a perfume in an amount of up to 30% weight, and more preferably of between 5 and 15% weight, relative to the weight of the composition.

11. The composition according to claim 1, wherein the w/w oil/surfactant system ratio (O/S) is comprised between 1.2 and 2.0 and the ratio O/(S+SA) is comprised between 0.5 and 2.

12. The composition according to claim 1, wherein

a) the anionic surfactants are selected from the group consisting of sodium, potassium, ammonium and mono-, di- and tri-ethanolammonium salts of C₆-C₁₂ dialkyl sulfosuccinic acids, C₇-C₂₄ alkarylsulfonic acids, C₆-C₁₅ alkylsulfuric acid, C₁₀-C₂₀ acyl glutamic acid, and polyethylene glycol/dimethicone sulfosuccinic acids;

and

b) the non-ionic surfactants are selected from the group consisting of ethoxylated and propoxylated (C₅-C₁₂ alkyl)phenols ethers containing 5 to 20 EO or PO units, polyethylene glycol sorbitol ether containing 3 to 30 EO units, sucrose esters with C₈-C₂₀ fatty acid, ethoxylated aliphatic C₆-C₂₀ alcohols containing 2 to 30 EO units, C₈-C₂₀ polyglyceryl esters, polyethylene glycol and polypropylene glycol block copolymers, ethoxylated glycol ether containing 2 to 30 EO units, and polyethylene glycol mono- and -diester of aliphatic C₅-C₁₁ carboxylic acids containing 2 to 10 EO units.

13. The composition according to claim 1, wherein the solubilizing-aid ingredient is selected from the group consisting of sodium, potassium, magnesium and calcium salts of pyridine carboxylic acids, proline acid, pyrrolidone carboxylic acid, benzoic acid, hydroxyl-benzoic acid, amino-benzoic acid, L-lactic acid, L-ascorbic acid, bicarbonate, succinic acid, oxalic acid, tartaric acid, citric acid, a C₈-C₁₀ derivative of benzoic, hydroxyl-benzoic or amino-benzoic acid substituted by one or two C₁-C₃ alkyl groups, benzene-sulfonic acid, a C₇-C₉ benzene-sulfonic acid substituted by one or two methyl or ethyl groups, naphthalene-sulfonic acid, an optionally hydroxylated C₁₁-C₁₄ naphthalene-sulfonic acid substituted by one or two C₁-C₄ alkyl groups, a C₃ to C₆ alkanoic acid and any mixture of said salts.

14. The composition according to claim 13, wherein the solubilizing-aid ingredient is selected from the group consisting of pyrrolidone carboxylic acid sodium salt, sodium benzoate, sodium L-lactate, calcium L-ascorbate, sodium bicarbonate, di-sodium succinate and any mixture of said salts.

15. A consumer article comprising a composition according to claim 1.

16. The consumer article according to claim 15, in the form of a textile freshener, an all-purpose cleaner or a hair or skin preparation.

17. The consumer article according to claim 15, in the form of a beverage, a dairy product or a salad cream.

18. A method to confer, enhance, improve or modify the odor properties of a surface such as skin, hair, glass, tiles, textiles, a kitchen or bathroom surface, which method comprises applying to said surface an olfactive effective amount of a composition as defined in claim 1.

19. A process for the preparation of a composition according to claim 1, which comprises the steps of:

a) admixing at least one anionic surfactant with at least one non-ionic surfactant to form a surfactant system (S);

b) adding to the surfactant system a solubilizing-aid ingredient (SA) as defined in claim 1, to form a system for solubilizing oil;

c) adding an oil (O) to said solubilizing system; and

d) optionally adding water,

wherein the surfactant system, solubilizing-aid ingredient and oil are admixed in appropriate amounts to obtain an oil concentration of 0.01 to 80% weight, relative to the weight of the composition, a ratio O/S comprised between 1 and 3 and a ratio O/(S+SA) comprised between 0.1 and 5.

20. The process according to claim 19, wherein the surfactant system is first added of water to obtain a surfactant solution to which there is added the desired amount of oil, followed by the solubilizing-aid ingredient.

21. The process according to claim 19, wherein steps a) and b) are carried out subsequently to form the solubilizing system, to which there is added the oil to be solubilized to form an oil concentrate.

22. The process according to claim 21, which comprises adding water to said oil concentrate to form a clear microemulsion.

24. A method to confer, enhance, improve or modify the odor, flavor, nutritional, texture, antibacterial, malodor counteracting and/or sun-screening properties, or skin-conditioning benefits, of a composition or of an article, which method comprises adding to said composition or article an effective amount of a composition according to claim 1.

23. A system for solubilizing oil, comprising at least one non-ionic surfactant and at least one anionic surfactant forming a surfactant system (S), and a solubilizing-aid ingredient (SA), said surfactant system and solubilizing-aid ingredient being present in an amount sufficient to solubilize oil (O) such that the ratio O/S is comprised between 1 and 3 and the ratio O/(S+SA) is comprised between 0.5 and 5.