EP2331050A2 - Device and formulation for hair - Google Patents

Device and formulation for hair

Info

Publication number
EP2331050A2
EP2331050A2 EP09781350A EP09781350A EP2331050A2 EP 2331050 A2 EP2331050 A2 EP 2331050A2 EP 09781350 A EP09781350 A EP 09781350A EP 09781350 A EP09781350 A EP 09781350A EP 2331050 A2 EP2331050 A2 EP 2331050A2
Authority
EP
European Patent Office
Prior art keywords
composition
hair
silicone
nebuliser
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09781350A
Other languages
German (de)
French (fr)
Inventor
Fraser Ian Bell
Aneliya Nikolova Zdravkova
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP09781350A priority Critical patent/EP2331050A2/en
Publication of EP2331050A2 publication Critical patent/EP2331050A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/06—Emulsions
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D19/00—Devices for washing the hair or the scalp; Similar devices for colouring the hair
    • A45D19/02—Hand-actuated implements, e.g. hand-actuated spray heads
    • A45D19/026—Hand-actuated implements, e.g. hand-actuated spray heads having brush or comb applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A61K8/892—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a hydroxy group, e.g. dimethiconol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/104—Hair brush

Definitions

  • the present invention relates to a hair grooming device and a formulation for use therewith.
  • the present invention is concerned with the problem of deposition of a benefit agent, particularly high molecular weight silicone from a hair grooming device.
  • 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 an emulsified composition wherein the viscosity of the emulsion is less than 8 cSt 25°C.
  • the head is bristle or tooth-bearing, more preferably the device is a comb or brush. Most preferably it is a brush.
  • the nebuliser is selected from those known in the art.
  • 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.
  • a nebuliser is commercially available from Aerogen®.
  • the gauze is convex with regard to the reservoir. This improves the movement of the nebulised fluid on to the hair during use.
  • 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.
  • the aperture is a hole or slot in the head.
  • 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.
  • the device is a comb it is preferred that there is a plurality of apertures located uniformly on the comb head.
  • the nebuliser is located in a chamber in the device and the chamber is connected to the exterior by a channel.
  • the device comprises a handle which houses the power source.
  • the power source could be separate and the device powered through the mains.
  • Benefit agents can be selected from the group consisting of fragrances, silicone oils, waxes, hydrocarbons, higher fatty acids, essential oils, hair styling polymers, colourants, hair conditioners, hair cleansers, hair growth promoters, vitamins, hair straighteners, hair growth stimulants, hair growth retardants, hair shedding inhibitors, antibacterial compounds, antifungal compounds, anti-inflammatory compounds, anti-pruritic agents, sebum suppressants, sunscreens and mixtures thereof.
  • a particularly preferred benefit agent is silicone.
  • Suitable silicones include polydiorganosiloxanes, in particular polydimethylsiloxanes which have the CTFA designation dimethicone.
  • polydimethyl siloxanes having hydroxyl end groups are particularly suitable for use compositions of the invention.
  • the viscosity of the emulsified silicone itself is preferably at least 10,000 cSt (25°C).
  • the viscosity of the silicone itself is preferably at least 60,000 cSt (25°C), most preferably at least 500,000 cSt (25°C), ideally at least 900,000 cSt (25°C).
  • the viscosity does not exceed 3M cSt (25°C).
  • Emulsified silicones for use the invention will typically have an average silicone particle size (D50) in the composition of less than 1000 nm, preferably less than 800nm, more preferably less than 700nm, ideally it ranges from 100 to 800 nm, more preferably from 150nm to 600nm.
  • D50 average silicone particle size
  • Suitable silicone emulsions for use in compositions of the invention are available from suppliers of silicones such as Dow Corning and GE Silicones. The use of such pre-formed silicone emulsions is preferred for ease of processing and control of silicone particle size.
  • Such pre-formed silicone emulsions will typically additionally comprise a suitable emulsifier such as an anionic or nonionic emulsifier, or mixture thereof, and may be prepared by a chemical emulsification process such as emulsion polymerisation, or by mechanical emulsification using a high shear mixer.
  • Suitable pre-formed silicone emulsions include emulsions DC2-1766, DC-1785, DDC-1788, DC2-1865 and DC2-1870, all available from Dow Corning. These are all emulsions/microemulsions of dimethiconol. Preferred silicones are DC5-7051 , particularly preferred are DC1788 and DC 1785.
  • the silicone level is preferably present at from 0.1 to 40% wt of the total composition, more preferably from 0.5 to 35% wt. especially from 1 to 30% wt.
  • the level of silicone that can be deposited is dependent on the silicone used.
  • compositions for use with the invention suitably comprises a carrier.
  • this carrier is water.
  • the levels of carrier in the total composition are above 60wt% of the total composition, more preferably above 70 wt%, most preferably above 80wt%.
  • the viscosity of the final composition is preferably from 1 cSt to 8 cSt at 25°C a more preferably from 2 cSt to 7.5 cSt (25°C), most preferably they have a viscosity above 3.5M cSt (25°C).
  • nebulising a silicone emulsion it is found that more silicone can be deposited at higher composition viscosities than if a solution of silicone is used.
  • the products are left on hair after application and not immediately washed off (within 10 minutes of application). Such products are known as leave in compositions.
  • the pH of the formulation is preferably from 2.5 to 6 at 25°C. More preferably from 3 to 5.
  • Suitable emulsifying agents include nonionic, cationic, anionic surfactants, or mixtures thereof. If such an emulsifying agent is used, it is preferably present at a level of from about 0.01 % to about 7.5% by weight based on total weight of the composition.
  • Figure 1 is a schematic section of a brush according to the invention, and Figures 2a, b and c are plan views of a brush according to the invention.
  • Figure 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.
  • Figure 2 shows three embodiments of apertures according to the invention.
  • Figure 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.
  • Figure 2b there are three apertures spaced uniformly and perpendicular to the general longitudinal axis of the brush (not shown).
  • Figure 2c there are six apertures arranged in two lines of three diamond shaped apertures.
  • each aqueous emulsion was nebulised into a sealed container of known weight. The water was evaporated from the container and the amount of silicone nebulised was measured by re-weighing the container.
  • DC5-7051 (2 wt% in water)and DC200 35OcSt in isododecane were applied using a nebuliser to dry hair.
  • 2.5g TA switches which were laid flat.
  • An X-ray fluorescence sample was taken from the centre of the switch and the level of silicone measured.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Cosmetics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Brushes (AREA)

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 an emulsified composition wherein the viscosity of the emulsion is less than 8 CSt 25°C.

Description

DEVICE AND FORMULATION
The present invention relates to a hair grooming device and a formulation for use therewith.
The present invention is concerned with the problem of deposition of a benefit agent, particularly high molecular weight silicone from a hair grooming device.
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 an emulsified composition wherein the viscosity of the emulsion is less than 8 cSt 25°C.
Preferably the head is bristle or tooth-bearing, more preferably the device is a comb or brush. Most preferably it is a brush.
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®.
Preferably, the gauze is convex with regard to the reservoir. This improves the movement of the nebulised fluid on to the hair during use.
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. 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.
Where the device is a comb it is preferred that there is a plurality of apertures located uniformly on the comb head.
Preferably, the nebuliser is located in a chamber in the device and the chamber is connected to the exterior by a channel.
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.
Benefit agents can be selected from the group consisting of fragrances, silicone oils, waxes, hydrocarbons, higher fatty acids, essential oils, hair styling polymers, colourants, hair conditioners, hair cleansers, hair growth promoters, vitamins, hair straighteners, hair growth stimulants, hair growth retardants, hair shedding inhibitors, antibacterial compounds, antifungal compounds, anti-inflammatory compounds, anti-pruritic agents, sebum suppressants, sunscreens and mixtures thereof.
A particularly preferred benefit agent is silicone. Suitable silicones include polydiorganosiloxanes, in particular polydimethylsiloxanes which have the CTFA designation dimethicone. Also particularly suitable for use compositions of the invention are polydimethyl siloxanes having hydroxyl end groups, which have the CTFA designation dimethiconol. The viscosity of the emulsified silicone itself (not the emulsion or the final hair conditioning composition) is preferably at least 10,000 cSt (25°C). The viscosity of the silicone itself is preferably at least 60,000 cSt (25°C), most preferably at least 500,000 cSt (25°C), ideally at least 900,000 cSt (25°C). Preferably the viscosity does not exceed 3M cSt (25°C).
Emulsified silicones for use the invention will typically have an average silicone particle size (D50) in the composition of less than 1000 nm, preferably less than 800nm, more preferably less than 700nm, ideally it ranges from 100 to 800 nm, more preferably from 150nm to 600nm.
Suitable silicone emulsions for use in compositions of the invention are available from suppliers of silicones such as Dow Corning and GE Silicones. The use of such pre-formed silicone emulsions is preferred for ease of processing and control of silicone particle size. Such pre-formed silicone emulsions will typically additionally comprise a suitable emulsifier such as an anionic or nonionic emulsifier, or mixture thereof, and may be prepared by a chemical emulsification process such as emulsion polymerisation, or by mechanical emulsification using a high shear mixer.
Examples of suitable pre-formed silicone emulsions include emulsions DC2-1766, DC-1785, DDC-1788, DC2-1865 and DC2-1870, all available from Dow Corning. These are all emulsions/microemulsions of dimethiconol. Preferred silicones are DC5-7051 , particularly preferred are DC1788 and DC 1785.
Mixtures of any of the above described silicone emulsions may also be used.
The silicone level is preferably present at from 0.1 to 40% wt of the total composition, more preferably from 0.5 to 35% wt. especially from 1 to 30% wt. The level of silicone that can be deposited is dependent on the silicone used. - A -
Compositions for use with the invention suitably comprises a carrier. Preferably, this carrier is water.
Preferably the levels of carrier in the total composition are above 60wt% of the total composition, more preferably above 70 wt%, most preferably above 80wt%.
The viscosity of the final composition is preferably from 1 cSt to 8 cSt at 25°C a more preferably from 2 cSt to 7.5 cSt (25°C), most preferably they have a viscosity above 3.5M cSt (25°C). When nebulising a silicone emulsion it is found that more silicone can be deposited at higher composition viscosities than if a solution of silicone is used.
It is preferred if the products are left on hair after application and not immediately washed off (within 10 minutes of application). Such products are known as leave in compositions.
The pH of the formulation is preferably from 2.5 to 6 at 25°C. More preferably from 3 to 5.
Examples of suitable emulsifying agents include nonionic, cationic, anionic surfactants, or mixtures thereof. If such an emulsifying agent is used, it is preferably present at a level of from about 0.01 % to about 7.5% by weight based on total weight of the composition.
The invention will now be described with reference to the following non-limiting drawings in which:
Figure 1 is a schematic section of a brush according to the invention, and Figures 2a, b and c are plan views of a brush according to the invention. In detail Figure 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.
Figure 2 shows three embodiments of apertures according to the invention. Figure 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 Figure 2b there are three apertures spaced uniformly and perpendicular to the general longitudinal axis of the brush (not shown). In Figure 2c there are six apertures arranged in two lines of three diamond shaped apertures.
The following are non-limiting Examples according to the invention.
Approximately 1g of each aqueous emulsion was nebulised into a sealed container of known weight. The water was evaporated from the container and the amount of silicone nebulised was measured by re-weighing the container.
The standard error of this experiment was calculated which is equivalent to the error in the deposited value which is 0.0014g.
The results of this experiment express conclusively that there is no loss of silicone transport with emulsions of the invention.
DC5-7051 (2 wt% in water)and DC200 35OcSt in isododecane were applied using a nebuliser to dry hair. 2.5g TA switches which were laid flat. An X-ray fluorescence sample was taken from the centre of the switch and the level of silicone measured.
The above data shows that DC5-7051 emulsion at 2% exhibits better deposition (relative to expected value) than a solution of 0.5% DC200 in Isododecane.

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 an emulsified composition wherein the viscosity of the emulsion is less than 8 CSt 25°C.
2. Devise according to claim 1 in which the emulsified composition comprises a benefit agent.
3. Device according to claim 2 in which the benefit agent is a silicone.
4. Device according to claim 2 in which the silicone has a viscosity below 3 McSt at 25°C.
5. Device according to any one of claims 3 to 4 in which the total level of silicone within the composition is 0.5 to 35 wt% of the total composition.
6. Device according to any preceding claim in which the head is a bristle or tooth-bearing.
7. Device according to any preceding claim which is a brush.
8. Device according to any preceding claim 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 any preceding claim 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 any preceding claim 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 an emulsified composition according to any preceding claim; and ii) nebulising the formulation using the apparatus described in any previous claim.
EP09781350A 2008-10-10 2009-07-31 Device and formulation for hair Withdrawn EP2331050A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09781350A EP2331050A2 (en) 2008-10-10 2009-07-31 Device and formulation for hair

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08166377 2008-10-10
EP09781350A EP2331050A2 (en) 2008-10-10 2009-07-31 Device and formulation for hair
PCT/EP2009/059942 WO2010040578A2 (en) 2008-10-10 2009-07-31 Device and formulation

Publications (1)

Publication Number Publication Date
EP2331050A2 true EP2331050A2 (en) 2011-06-15

Family

ID=40690330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09781350A Withdrawn EP2331050A2 (en) 2008-10-10 2009-07-31 Device and formulation for hair

Country Status (7)

Country Link
US (1) US20110192412A1 (en)
EP (1) EP2331050A2 (en)
JP (1) JP2012504989A (en)
CN (1) CN102159174A (en)
BR (1) BRPI0912909A2 (en)
MX (1) MX2011003831A (en)
WO (1) WO2010040578A2 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574747A (en) * 1946-09-11 1951-11-13 Clara E Mcnutt Spray device
US3854489A (en) * 1972-10-12 1974-12-17 Schick Inc Hair styling appliance
US5173290A (en) * 1990-07-06 1992-12-22 Dow Corning Corporation Hair fixatives
DE4426794C1 (en) * 1994-07-28 1995-07-06 Goldwell Ag Agent for treating damaged hairs which is easily washed out
US5705562A (en) * 1995-11-20 1998-01-06 Dow Corning Corporation Spontaneously formed clear silicone microemulsions
US5965115A (en) * 1997-11-05 1999-10-12 The Procter & Gamble Company Personal care compositions
FR2776629B1 (en) * 1998-03-24 2000-05-12 Oreal HEAD FOR THE DISTRIBUTION AND APPLICATION OF A PRODUCT, IN PARTICULAR HAIR CARE, AND PACKAGING ASSEMBLY EQUIPPED WITH SUCH A HEAD
EP1487396A1 (en) * 2002-03-28 2004-12-22 The Procter & Gamble Company Emulsion compositions
DE102005047858A1 (en) * 2005-10-05 2007-04-12 Henkel Kgaa Two-component product for the treatment of keratinous fibers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010040578A2 *

Also Published As

Publication number Publication date
WO2010040578A3 (en) 2010-09-23
JP2012504989A (en) 2012-03-01
US20110192412A1 (en) 2011-08-11
BRPI0912909A2 (en) 2019-09-24
WO2010040578A2 (en) 2010-04-15
MX2011003831A (en) 2011-04-27
CN102159174A (en) 2011-08-17

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