U.S. patent application number 13/122970 was filed with the patent office on 2011-08-11 for device and formulation for hair.
Invention is credited to Aneliya Nikolova Zdravkova.
Application Number | 20110192411 13/122970 |
Document ID | / |
Family ID | 40688477 |
Filed Date | 2011-08-11 |
United States Patent
Application |
20110192411 |
Kind Code |
A1 |
Zdravkova; Aneliya
Nikolova |
August 11, 2011 |
DEVICE AND FORMULATION FOR HAIR
Abstract
Hair grooming device comprising a head, a nebuliser, a power
supply therefore and a reservoir containing a composition to be
applied to the hair during use by the nebuliser, the composition
comprising a solution comprising hydrocarbon having an average
carbon chain length of 13 or less and a benefit agent, and wherein
the composition has a viscosity of 4.5 cSt or less 25.degree.
C.
Inventors: |
Zdravkova; Aneliya Nikolova;
(Wirral, GB) |
Family ID: |
40688477 |
Appl. No.: |
13/122970 |
Filed: |
July 31, 2009 |
PCT Filed: |
July 31, 2009 |
PCT NO: |
PCT/EP2009/059941 |
371 Date: |
April 7, 2011 |
Current U.S.
Class: |
132/200 ;
132/272 |
Current CPC
Class: |
A61K 8/046 20130101;
A61K 8/31 20130101; A61Q 5/12 20130101; A61K 8/891 20130101 |
Class at
Publication: |
132/200 ;
132/272 |
International
Class: |
A45D 19/16 20060101
A45D019/16; A45D 24/22 20060101 A45D024/22 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 10, 2008 |
EP |
081663767 |
Claims
1. Hair grooming device comprising a head, a nebuliser, a power
supply therefore and a reservoir containing a composition to be
applied to the hair during use by the nebuliser, the composition
comprising a solution comprising hydrocarbon having an average
carbon chain length of 13 or less and a benefit agent, and wherein
the composition has a viscosity of 4.5 cSt or less 25.degree.
C.
2. Device according to claim 1 in which the benefit agent is a
silicone.
3. Device according to claim 2 in which the silicone has a
viscosity below 500 cSt at 25.degree. C.
4. Device according to claim 2 in which the total level of silicone
within the composition is 1 wt % or below.
5. Device according to claim 1 in which the hydrocarbon has an
average chain length from 8 to 12.
6. Hair grooming device according to claim 1 in which the head is
bristle or tooth-bearing head.
7. Device according to claim 1 which is a brush.
8. Device according to claim 1 wherein the nebuliser comprises a
gauze defined by a rigid ring, a reservoir for containing a
composition to be nebulised and a circuit connected to the power
supply.
9. Device according to claim 8 wherein the gauze is convex with
regard to the reservoir.
10. Device according to claim 1 wherein the nebuliser is located
within the head and the head also comprises an aperture for
releasing the nebulised fluid during use on to the hair.
11. Device according to claim 1 comprising a handle which houses
the power source.
12. A process for depositing a hair benefit agent onto the hair,
the process comprising the following steps: i) forming a
composition comprising a hydrocarbon having an average carbon chain
length of 13 or less and a benefit agent, and wherein the
composition has a viscosity of less than 5 cSt at 25.degree. C. ii)
nebulising the formulation using the apparatus described in any
previous claim.
Description
[0001] The present invention relates to a hair grooming device and
a formulation for use therewith.
[0002] The present invention is concerned with the problem of
deposition of a benefit agent, in particular silicone from a hair
grooming device.
[0003] Accordingly, the present invention provides a hair grooming
device comprising a head, a nebuliser, a power supply therefore and
a reservoir containing a composition to be applied to the hair
during use by the nebuliser, the composition comprising a solution
comprising hydrocarbon having an average carbon chain length of 13
or less and a benefit agent, and wherein the composition has a
viscosity of 5 cSt or less at 25.degree. C.
[0004] Preferably, the head is bristle or tooth-bearing, more
preferably the device is a comb or brush. Most preferably it is a
brush.
[0005] The nebuliser is selected from those known in the art.
Preferably, the nebuliser comprises a gauze defined by a rigid
ring, a reservoir for containing a composition to be nebulised and
a circuit connected to the power supply. Such a nebuliser is
commercially available from Aerogen.RTM..
[0006] Preferably, the gauze is convex with regard to the
reservoir. This improves the movement of the nebulised fluid on to
the hair during use.
[0007] Preferably, the nebuliser is located within the head and the
head also comprises an aperture for releasing the nebulised fluid
during use on to the hair. Preferably, the aperture is a hole or
slot in the head. In a preferred embodiment there is a plurality of
apertures.
[0008] Where the device is a brush it is preferred that the
aperture is located centrally on the brush head. More preferably,
the aperture is surrounded by bristles. Where there are more than
one aperture they are preferably arranged symmetrically on the
brush head to provide uniform release of nebulised.
[0009] Where the device is a comb it is preferred that there is a
plurality of apertures located uniformly on the comb head.
[0010] Preferably, the nebuliser is located in a chamber in the
device and the chamber is connected to the exterior by a
channel.
[0011] Preferably, the device comprises a handle which houses the
power source. Alternatively, the power source could be separate and
the device powered through the mains.
[0012] The composition contained within the reservoir comprises a
hydrocarbon having an average carbon chain length of 13 or
less.
[0013] Benefit agents can be selected from the group consisting of
moisturisers, anti-wrinkle agents, hair nutrients, and the like,
fragrances, silicone oils, waxes, higher fatty acids, essential
oils, lipids, skin coolants, vitamins, sunscreens, glycerine, hair
styling polymers, colourants, hair conditioners, hair growth
promoters, vitamins, hair straighteners, hair growth stimulants,
hair shedding inhibitors, antibacterial compounds, antifungal
compounds, anti-inflammatory compounds, anti-pruritic agents, sebum
suppressants, sunscreens and mixtures thereof.
[0014] The benefit agent is preferably a silicone.
[0015] Suitable silicones include polydiorganosiloxanes, in
particular polydimethylsiloxanes which have the CTFA designation
dimethicone.
[0016] It is preferable if the silicone has a viscosity below 1000
cSt at 25.degree. C., more preferably a viscosity below 700 cSt,
more preferably a viscosity below 500 cSt at 25.degree. C.
Silicones with a viscosity of 350 or below are particularly
preferred.
[0017] Suitable silicones having the required viscosities are
available form Dow Corning, Wacker, GE and Clearco. Examples of
these silicones are DC200 ex Dow, Wacker AK 350 and pure Silicone
Fluid 350 cSt (food grade) from Clearco.
[0018] Preferably the total level of silicone within the
composition is below 2 wt %, more preferably 1 wt % or below.
[0019] Hydrocarbons for use with the invention have an average
hydrocarbon chain length of 13 or less, preferably the hydrocarbon
chain has an average chain length greater the 6, more preferably
the hydrocarbon has an average chain length from 8 to 12. Suitable
primary solvents include isododecane and in isoparrafin H (C9-12)
(Isopar H).
[0020] In some aspects of the invention the solvent system may
comprise at least two components. Suitable secondary solvents for
use in this solvent mix include cyclopentasiloxane, isopropyl
palmitate and isopropyl myristate. The level of secondary solvent
should not exceed 20 wt % of the solvent mix, preferably the level
of secondary solvent should not exceed 10 wt %.
[0021] The hydrocarbons present in this composition are preferably
present at levels in which they can solubilise the benefit agent.
Preferably the levels of hydrocarbon are above 80 wt % of the total
composition, more preferably above 90 wt %, most preferably above
95 wt %.
[0022] The viscosity of the final composition is 4.5 cSt or less
25.degree. C., more preferably 4 cSt or less 25.degree. C.
Preferably the viscosity is 1.5 cSt or above at 25.degree. C., more
preferably above 2 cSt.
[0023] It is preferred if compositions that are applied using this
system are left on hair after application and not immediately
washed off (within 10 minutes of application). Such products are
known as leave in compositions.
[0024] The invention will now be described with reference to the
following non-limiting drawings in which:
[0025] FIG. 1 is a schematic section of a brush according to the
invention, and
[0026] FIGS. 2a, b and c are plan views of a brush according to the
invention.
[0027] In detail FIG. 1 shows a brush head 1 connected to a handle
2 which houses a power supply 3. The head 1 houses a nebuliser 10
which consists of a support 5 for a gauze 7 and a reservoir 6
containing a hair care composition. The brush head 1 also has
bristles 8 depending there from and an aperture 9 in the head 1 for
release of the nebulised hair care composition.
[0028] FIG. 2 shows three embodiments of apertures according to the
invention. FIG. 2a shows a brush head 1 with an aperture 9 which
runs centrally down the brush head and is surrounded on all sides
by bristles 8. In FIG. 2b there are three apertures spaced
uniformly and perpendicular to the general longitudinal axis of the
brush (not shown). In FIG. 2c there are six apertures arranged in
two lines of three diamond shaped apertures.
[0029] The following non-limiting Examples illustrate the benefit
of the invention.
[0030] X g of a composition was placed in the reservoir of the
device of FIG. 1. The device was placed so the mist emerging from
it would deposit onto hair. The device was activated until the
reservoir was empty. The amount of silicone deposited onto the hair
measured using standard X-ray fluorescence techniques.
TABLE-US-00001 Example 1 Example 2 Example A Example 3 Example B
Example C DC200 (350 cSt 25.degree. C.) 1 1 1 1 1 1 Isopar H(9-12)
99 Isododecane 99 89 Isopropyl Palmitate 99 10 Isopar P(C13-C16) 99
Cyclopentasiloxane 99 Viscosity 3.00-3.50 3.50-4.00 >5.00
3.50-4.00 5.33 >4.00 (cSt @ 25.degree. C.) Deposited DC200 Can
be Can be Cannot Can be Cannot Cannot (ppm) Measured by nebulised
nebulised be nebulised be be XRF (550 .+-. 156) nebulised nebulised
nebulised
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