Multi-diffusion-orifice aerosol device for dry-washing the hair

Abstract

The present invention relates to an aerosol device including: —a container containing: —one or more propellants, and--a composition including one or more sebum-absorbing powders with a sebum uptake of greater than or equal to 35 m1/100 g, the propellant(s) possibly being present in the composition or, in the container, separate from the composition, —an aerosol device for dispensing the said aerosol composition, including a diffuser equipped with at least two, and better three, spray orifices (22). The invention also relates to a process for the dry-washing and cosmetic treatment of keratin materials, including a step of applying to the hair the cosmetic composition, sprayed from the particular aerosol device.

Claims

1. An aerosol device comprising: (a) a container comprising: at least one propellant, and a composition comprising: from 8.6% to 30% by weight, based on the total weight of the composition and the at least one propellant, of at least one sebum-absorbing powder chosen from modified starches having a sebum uptake of greater than or equal to 35 m1/100 g; and from 1% to 10% by weight, based on the total weight of the composition and the at least one propellant, of a styling powder comprising at least one water-insoluble mineral compound chosen from calcium carbonate, magnesium carbonate, alumina, barium sulfate, and magnesium oxide, 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) at least one diffuser disposed on the container and comprising: at least three spray orifices with a spraying direction (Y), wherein axes of the at least three spray orifices are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the composition 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 composition to the at least three spray orifices from the delivery channel.

2. The device according to claim 1, wherein the at least one propellant is present in the composition, and the at least one sebum-absorbing powder is present in an amount ranging from about 9.4% to 30% by weight, relative to the total weight of the composition.

3. The device according to claim 1, wherein the composition further comprises at least one C.sub.2-4 monoalcohol.

4. The device according to claim 3, wherein the at least one propellant is present in the composition, and the at least one C.sub.2-4 monoalcohol is present in an amount ranging from about 1% to about 70% by weight, relative to the total weight of the composition.

5. The device according to claim 1, wherein the at least one propellant is chosen from air, nitrogen, carbon dioxide, dimethyl ether, C.sub.3-5 alkanes, 1,1-difluoroethane, and mixtures thereof.

6. 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.

7. The device according to claim 1, wherein the composition further comprises at least one non-elastomeric silicone.

8. The device according to claim 7, wherein the at least one non-elastomeric silicone is chosen from silicone gums having a viscosity greater than 0.5×10.sup.−3 m.sup.2/s (500 cSt).

9. The device according to claim 1, wherein the composition further comprises at least one fatty ester.

10. The device according to claim 1, wherein the composition further comprises at least one additive chosen from conditioning or fixing anionic, cationic, nonionic, amphoteric or zwitterionic polymers, fragrances, dyes, protective screening agents, acids, bases, nacres, and glitter flakes.

11. The device according to claim 1, wherein the at least three spray orifices are arranged at 120° relative to each other around the spraying direction (Y).

12. A process for the dry-washing and cosmetic treatment of keratin materials, comprising: (I) spraying a composition from an aerosol device, comprising: (a) a container comprising: at least one propellant, and the a composition, the composition comprising: from 8.6% to 30% by weight, based on the total weight of the composition and the at least one propellant, of at least one sebum absorbing powder chosen from modified starches having a sebum uptake of greater than or equal to 35 ml/100 g; and from 1% to 10% by weight, based on the total weight of the composition and the at least one propellant, of a styling powder comprising at least one water-insoluble mineral compound chosen from calcium carbonate, magnesium carbonate, alumina, barium sulfate, and magnesium oxide, 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) at least one diffuser disposed on the container and comprising: at least three spray orifices with a spraying direction (Y), wherein axes of the at least three spray orifices are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the composition 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 composition to the at least three spray orifices from the delivery channel; (II) applying said composition to wet or dry hair; and (III) optionally, rinsing the hair after an optional leave-on time.

13. An aerosol device comprising: (a) a container comprising: at least one propellant, and a composition comprising: from 8.6% to 30% by weight, based on the total weight of the composition and the at least one propellant, of at least one sebum-absorbing powder chosen from modified starches having a sebum uptake of greater than or equal to 35 m1/100 g; and from 1% to 10% by weight, based on the total weight of the composition and the at least one propellant, of a styling powder comprising at least one water-insoluble mineral compound chosen from calcium carbonate, magnesium carbonate, alumina, barium sulfate, and magnesium oxide; and at least one non-elastomeric silicone in an amount ranging from about 0.5% to about 5% by weight, relative to the total weight of the composition, wherein the at least one propellant is present in the composition and/or in the container, separate from the composition; and (b) at least one diffuser disposed on the container and comprising: at least three spray orifices with a spraying direction (Y), wherein axes of the at least three spray orifices are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the composition 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 composition to the at least three spray orifices from the delivery channel.

14. An aerosol device comprising: (a) a container comprising: at least one propellant, and a composition comprising: from 9.4% to 30% by weight, based on the total weight of the composition and the at least one propellant, of at least one sebum-absorbing powder chosen from modified starches having a sebum uptake of greater than or equal to 35 ml/100 g; from 1% to 10% by weight, based on the total weight of the composition and the at least one propellant, of a styling powder comprising at least one water-insoluble mineral compound chosen from calcium carbonate, magnesium carbonate, alumina, barium sulfate, and magnesium oxide; and isopropyl myristate or palmitate, wherein the at least one propellant is present in the container mixed with composition or is present in the container, separate from the composition; and (b) at least one diffuser comprising: at least three spray orifices with a spraying direction (Y), wherein axes of the at least three spray orifices are parallel to each other and parallel to the spraying direction (Y); a delivery channel configured to receive the composition 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 composition to the at least three spray orifices from the delivery channel.

Description

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

(2) FIG. 1 represents in perspective, in isolation, a diffuser,

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

(4) FIG. 3 represents, in isolation, in axial cross-section, the spray nozzle.

(5) The diffuser 1 represented in the figures is intended to equip a container 2, for example an aerosol can comprising the composition described previously.

(6) The container 2 is equipped with a valve triggered by pushing in a hollow control rod 4 along the longitudinal axis X of the container. As a variant, the valve is triggered by tipping.

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

(8) The push button 8 is made with an end piece 16 interlocked over the valve rod 4, this end piece 16 being in communication with a delivery channel 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 channel 17 emerges in the bottom of a housing 18, which receives a spray nozzle 20.

(10) The nozzle 20 has several spray orifices 22, numbering three in the case in point, the axes Z of which are parallel to the spraying direction, which coincides with the longitudinal axis Y of the delivery channel 17 and with the axis of the nozzle.

(11) The orifices 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 illustrated example, the nozzle 20 is without turbulent channels, the orifices 22 being directional.

(13) The nozzle 20 comprises, on its rear face 43, which has a general dome shape, three recesses 40 each extending longitudinally along an axis K which forms, with the axis W of the nozzle 20, an angle α preferably of approximately 45°.

(14) The recesses 40 define, with the bottom of the housing 18 of the push button 8 which receives them, feed channels 50 which connect the delivery channel 17 to the spray orifices 22.

(15) Each feed channel 50 is connected to an axisymmetric section 57, having the axis Z. A conical section 54 converging towards the outlet connects the section 57 to another axisymmetric section 55, of 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 outside diameter of the nozzle 20 is, for example, less than or equal to 15 mm. The spray orifices 22 may be relatively close together, which enables the formation at a short distance, for example less than 10 cm from the diffuser 1, of a homogeneous spray.

(18) The present invention also relates to a process for the dry-washing and cosmetic treatment of the hair, comprising the application to the hair, preferably dry hair, of a cosmetic composition as described above by means of an aerosol device as described above.

(19) The present invention also relates to the use of the cosmetic composition defined above sprayed from the aerosol device according to the invention, for the dry-washing and cosmetic treatment of the hair.

(20) The examples that follow serve to illustrate the invention.

EXAMPLES

(21) The following compositions 1 and 2 according to the invention were prepared from the compounds indicated in the table below, all the amounts being indicated as weight percentages of product as active materials relative to the total weight of the composition.

(22) TABLE-US-00002 1 2 Aluminium Starch Octenylsuccinate.sup.1  8.6% 9.39% Calcium carbonate (D50 = 35 μm).sup.2   2% 2.18% Disteardimonium Hectorite.sup.3 0.25% 0.28% Dimethicone/dimethiconol.sup.4 0.55% — Isopropyl myristate   2% 0.42% Propylene carbonate.sup.5 0.07% — Fragrance  0.2% 0.20% Isobutane   70% qs 100% Ethanol qs 100% — .sup.1Sold under the trade name Dry Flo Plus by Akzo Nobel .sup.2Sold under the trade name Omyacare S60 by Omya .sup.3Sold under the trade name Bentone 38 VCG by Elementis .sup.4Sold under the trade name Mirasil D-DML by Dow Corning .sup.5Sold under the trade name Jeffsol Propylene Carbonate by Huntsman

(23) The aerosol device according to the invention used for conditioning the above compositions comprises the following characteristics:

(24) a valve equipped with a nozzle with an orifice 0.64 mm in size and an internal restriction orifice 0.64 mm in size, with an additional gas intake 0.64 mm in size,

(25) a diffuser, as illustrated on the figures, comprising three direct-outlet orifices 0.5 mm in diameter.

(26) The compositions were sprayed onto a head of greasy, dirty hair. The diffusion is fine and the application is easy.

(27) After drying, it is found that the head of hair is visually cleaner, with little visible residue. Lifting of the roots and provision of volume and body are also observed. The hair has a natural feel.

(28) Composition A according to the invention was prepared from the compounds indicated in the table below, all the amounts being indicated in gram of commercial product as is.

(29) TABLE-US-00003 A Disteardimonium Hectorite (Bentone 38 VCG 3 sold by Elementis) Aluminum starch octenylsuccinate (DRY FLO 4 PLUS sold by Akzo Nobel) Carbonate de calcium (D50 = 35 μm) 8 (OMYACARE S60 sold by Omya) Ethanol 1.9 Cyclomethicone (XIAMETER PMX-0245 4.90 CYCLOPENTASILOXANE sold by Dow Corning = Silice 0.2 Isobutane 78

(30) Composition A was packaged in an aerosol device (D.sub.ant) with a conventional diffuser with one orifice (prior art).

(31) Composition A was also packaged in an aerosol device (D.sub.inv) with a diffuser with three orifices, as described in the previous example (invention).

(32) The evaluations were made by ten experts on natural hair locks attached on a rectangular support. Each support carries about 20 g of hair.

(33) Hair were washed and allowed to dry naturally. 5.5 g of composition A were sprayed on the hair of a support, with the device (D.sub.ant).

(34) 5.5 g of composition A were also sprayed on the hair of another support, with the device (D.sub.inv).

(35) The experts evaluated the whitening of the hair after the application of the composition.

(36) They also evaluated the amount of residues on a comb comprising large and small teeth after having combed hair according to the following protocol: three passages of large teeth and three passages of small teeth.

(37) They also evaluated the facility of the fingers to run through the hair after ten passages of fingers through the hair.

(38) Ten out of ten experts felt that the hair treated with the composition A sprayed with aerosol device comprising a diffuser with three orifices of the invention (D.sub.inv) are less white, that they lead to less residues on the comb, to an easier running of fingers through the hair, and a feel more smooth, homogeneous and without grip, compared to hair treated with the composition A sprayed with aerosol device comprising a diffuser with one orifice of the prior art (D.sub.ant).