Aerosol device with multi-aperture diffusion for hair shaping and/or style holding

Abstract

The present invention relates to an aerosol device including: —a container containing: —one or more propellants, and —a composition including one or more fixing polymers and/or one or more styling powders including one or more water-insoluble inorganic compounds, the propellant or propellants possibly being present in the composition or in the container, separate from the composition, —an aerosol device for distributing the aerosol composition, including a diffuser having at least three spraying apertures for spraying the composition in a main spraying direction. The invention further provides a method for shaping the hair and/or maintaining the style, including a step of applying to the wet or dry hair a cosmetic composition sprayed from a specific aerosol device.

Claims

1. An aerosol device comprising: (a) a container comprising: at least one propellant; and a composition comprising: at least one fixing polymer, and/or at least one styling powder comprising at least one water-insoluble inorganic compound, wherein the at least one propellant is present in the container mixed with the composition or is present in the container separate from the composition; and (b) a diffuser disposed on the container and comprising: at least three spraying apertures for spraying a mixture of the at least one propellant and the composition in a spraying direction (Y), wherein axes of the at least three spraying apertures are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the mixture from the container; and feed channels that are inclined obliquely relative to the spraying direction (Y) and the delivery channel, the feed channels being configured to respectively provide the mixture to the spraying apertures from the delivery channel.

2. The device according to claim 1, wherein the at least one fixing polymer is chosen from anionic, amphoteric, and nonionic fixing polymers.

3. The device according to claim 2, wherein the at least one anionic fixing polymer is selected from the group consisting of copolymers of acrylic and methacrylic acid or their salts, copolymers of crotonic acid, copolymers of monounsaturated C4-C8 carboxylic acids or anhydrides, polyacrylamides containing carboxylate groups, homopolymers or copolymers containing sulfonic groups, anionic polyurethanes, and anionic grafted silicone polymers.

4. The device according to claim 2, wherein the at least one nonionic polymer is chosen from polyalkyloxazolines; vinyl acetate homopolymers; vinyl acetate copolymers; homopolymers and copolymers of esters; copolymers of acrylonitrile and nonionic monomers; styrene homopolymers; styrene copolymers; polyamides; vinyl lactam homopolymers; vinyl lactam copolymers; non hydrolysed polyvinylformamide polymers; and polyvinyl alcohols.

5. The device according to claim 1, wherein the at least one propellant is present in the composition, and the at least one fixing polymer is present in an amount ranging from about 0.1% to about 20% by weight, relative to the total weight of the composition.

6. The device according to claim 1, wherein the at least one water-insoluble inorganic compound is selected from the group consisting of metal carbonates, oxides, sulfates, and silicates containing magnesium.

7. The device according to claim 1, wherein the at least one water-insoluble inorganic compound is selected from the group consisting of calcium carbonate, magnesium carbonate, alumina, barium sulfate, and magnesium oxide.

8. The device according to claim 1, wherein the composition is mixed with the at least one propellant, and the at least one water-insoluble inorganic compound is present in an amount ranging from about 0.1% to about 30% by weight, relative to the total weight of the composition.

9. The device according to claim 1, wherein the composition further comprises at least one C2-4 monoalcohol.

10. The device according to claim 9, wherein the at least one propellant is mixed with the composition, and the at least one C2-4 monoalcohol is present in an amount ranging from about 1% to about 70% by weight, relative to the total weight of the composition.

11. The device according to claim 1, wherein the composition further comprises at least one additive selected from the group consisting of anionic, cationic, nonionic, amphoteric and zwitterionic conditioning polymers, fragrances, dyes, UV-protective filters, acids, bases, nacres, and flakes.

12. The device according to claim 1, wherein the at least one propellant is selected from the group consisting of air, nitrogen, carbon dioxide, dimethyl ether, volatile hydrocarbons, chlorinated and/or fluorinated hydrocarbons, and mixtures thereof.

13. The device according to claim 1, wherein the at least one propellant is present in the composition in an amount ranging from about 10% to about 90% by weight, relative to the total weight of the composition.

14. The device according to claim 1, wherein the at least three spraying apertures are arranged at 120° from one another around the spraying direction.

15. The device according to claim 1, wherein the at least three spraying apertures are fixed on a single nozzle.

16. The device according to claim 1, wherein each of the at least three spraying apertures is connected to a feed duct, said feed duct inclined obliquely relative to the spraying direction.

17. A method for shaping and/or maintaining hair, comprising: (a) spraying a cosmetic composition from an aerosol device comprising: a container comprising: at least one propellant; and a composition comprising: at least one fixing polymer; and/or at least one styling powder comprising at least one water-insoluble inorganic compound; wherein the at least one propellant is present in the container mixed with the composition, or is present in the container separate from the composition; and a diffuser disposed on the container and comprising: at least three spraying apertures for spraying a mixture of the at least one propellant and the composition in a spraying direction (Y), wherein axes of the at least three spraying apertures are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the mixture from the container; and feed channels that are inclined obliquely relative to the spraying direction (Y) and the delivery channel, the feed channels being configured to respectively provide the mixture to the at least three spraying apertures from the delivery channel; and (b) applying said composition to wet or dry hair; and (c) optionally, rinsing the hair after an optional leave-on time.

18. An aerosol device comprising: (a) a container comprising: at least one propellant; and a composition comprising: at least one fixing polymer, and/or at least one styling powder comprising at least one water insoluble inorganic compound, wherein the at least one propellant is present in the container mixed with the composition or is present in the container separate from the composition; and (b) a diffuser disposed on the container and comprising at least three spraying apertures for spraying a mixture of the at least one propellant and the composition in a spraying direction (Y) wherein axes of the at least three spraying apertures are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the mixture from the container; and feed channels that are inclined obliquely relative to the spraying direction (Y) and the delivery channel, the feed channels being configured to respectively provide the mixture to the at least three spraying apertures from the delivery channel, wherein each spraying aperture comprises a first cylindrical section configured to receive the mixture from one of the feed channels, a conical section, and a second cylindrical section configured to expel the mixture from the diffuser, wherein the second cylindrical section has a smaller diameter than the first cylindrical section, wherein the conical section narrows and connects the first cylindrical section to the second cylindrical section, and wherein the delivery channel has a longitudinal axis that is inclined relative to a longitudinal axis (X) of the container.

19. A method for shaping and/or maintaining hair, comprising: (a) spraying a cosmetic composition from an aerosol device comprising: a container comprising: at least one propellant; and a composition comprising: at least one fixing polymer; and/or at least one styling powder comprising at least one water insoluble inorganic compound; wherein the at least one propellant is present in the container mixed with the composition or is present in the container separate from the composition; and a diffuser disposed on the container and comprising: at least three spraying apertures for spraying a mixture of the at least one propellant and the composition in a spraying direction, wherein axes of each of the at least three spraying apertures are parallel to each other and parallel to a spraying direction (Y); a delivery channel configured to receive the mixture from the container; and feed channels that are inclined obliquely relative to the spraying direction (Y) and the delivery channel, the feed channels being configured to respectively provide the mixture to the at least three spraying apertures from the delivery channel; (b) applying said composition to wet or dry hair; and (c) optionally, rinsing the hair after an optional leave-on time.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention may be better understood on reading the following detailed description of a non-limiting implementational example thereof and on examining the appended drawing, in which:

(2) FIG. 1 shows a perspective view in isolation of a diffuser,

(3) FIG. 2 shows the diffuser mounted on a container with a protective cap in place, in longitudinal, partial and diagrammatic section, and

(4) FIG. 3 shows in isolation, in axial section, the spraying nozzle.

(5) The diffuser 1 shown in the figures is intended for attachment to a container 2, for example an aerosol flask containing the composition described above.

(6) The container 2 is equipped with a valve for release by depression of a hollow control rod 4 in the longitudinal axis X of the container. In an alternative form, the valve is for release by tipping.

(7) In the example illustrated, the diffuser 1 comprises a body 5 which includes a push button 8. The push button 8 defines a surface 9 on which the user can press in order to dispense the product.

(8) The push button 8 is produced with a joining piece 16 interlocked over the valve rod 4, this joining piece 16 being in communication with a delivery duct 17, the longitudinal axis Y of which is non-perpendicular to the longitudinal axis X of the container, being inclined upwards, when the container 2 is vertical and the dispensing head 1 is fixed above.

(9) The delivery duct 17 emerges in the bottom of a housing 18, which receives a spraying nozzle 20.

(10) The nozzle 20 has a plurality of spraying apertures 22, in the present case three in number, with axes Z which are parallel to the spraying direction, which is coincident with the longitudinal axis Y of the delivery duct 17 and with the axis of the nozzle.

(11) The apertures 22 emerge on a front face 30 of the nozzle 20, which is visible after the nozzle has been fitted to the push button 8.

(12) In the example illustrated, the nozzle 20 has no swirl ducts; the apertures 22 are directional.

(13) On its back face 43, which has the general form of a dome, the nozzle 20 comprises three grooves 40, each extending longitudinally on an axis K which, with the axis Y of the nozzle 20, forms an angle α of preferably close to 45°.

(14) The grooves 40 define, with the bottom of the housing 18 of the push button 8 which receives them, feed ducts 50 which connect the delivery duct 17 to the spraying apertures 22.

(15) Each feed duct 50 connects to a rotationally generated cylindrical section 57, with an axis Z. A conical section 54 which narrows towards the outlet connects the section 57 to another, rotationally generated cylindrical section 55, with a smaller diameter, which emerges on the front face 30 of the nozzle.

(16) The diameter of the cylindrical section 55 is, for example, 0.25 mm and that of the cylindrical section 57 is 0.6 mm. The axial dimension d of the conical section 54 and of the cylindrical section 57, considered together, is, for example, between 1 and 1.5 mm, for example being 1.3 mm, and the axial dimension of the cylindrical section 55 is, for example, between 0.4 and 0.8 mm, for example being 0.6 mm.

(17) The outer diameter of the nozzle 20 is, for example, less than or equal to 15 mm. The spraying apertures 22 may be relatively close, allowing the formation of a uniform spray at a small distance, for example less than 10 cm from the diffuser 1.

(18) The present invention also relates to a method for shaping the hair and/or maintaining the style, comprising a step of applying to the wet or dry hair a cosmetic composition sprayed from an aerosol device as described above, to be rinsed off or not, after an optional leave-on time or after optional drying.

(19) The present invention also relates to the use of the cosmetic composition defined above and sprayed from the aerosol device according to the invention for shaping the hair and/or maintaining the style.

(20) The example which follows serves to illustrate the invention.

Example

(21) In the example below, all amounts are indicated in weight percentage of product, in terms of active substances, relative to the total weight of the composition.

(22) The compositions below according to the invention were prepared from compounds indicated in the table below.

(23) TABLE-US-00001 1 2 Calcium carbonate (D50 = 35 μm).sup.1 5% — Polyvinylcaprolactam.sup.2 2% — Va/crotonates/vinyl neodecanoate — 2.8% copolymer.sup.3 Aminomethylpropanol 0.295%  Fragrance 0.1%   0.3% Isobutane 60%  — Dimethyl ether —  50% Ethanol qs 100% qs 100% .sup.1Sold under the trade name AH Mikhart 40 by Provencale S.A. .sup.2Sold under the trade name Luviskol Plus by BASF .sup.4: Sold under the trade name Mirasil D-DML by Dow Corning .sup.5: Sold under the trade name Jeffsol Propylene Carbonate by Huntsman

(24) The aerosol device according to the invention which is used for packaging the above compositions comprises the following features:

(25) a valve equipped with a nozzle and having an aperture size of 0.64 mm and an internal restriction aperture size of 0.64 mm, with an e additional gas intake of 0.64 mm;

(26) a diffuser as described on the figures comprising three direct-outlet apertures of 0.5 mm in diameter for composition 1 and of 0.4 mm in diameter for composition 2.

(27) The compositions were sprayed onto a body of hair. The spreading is fine and application is easy.

(28) Following drying, the provision of volume and the bodying of the fibres is observed, while a natural appearance is retained.