|Title of Invention||
|Abstract||A cosmetic spray composition comprising ethanol, DME, and water in proportions of from 11% to 24% by weight ethanol, from 33% to 55% by weight DME, and from 27% to 50% by weight water based upon the total weight of ethanol, DME, and water present in the composition, the weight ratio of DME to ethanol being from 2:1 to 3.5:1.|
THE PATENTS ACT, 1970
(39 of 1970)
The Patents Rules, 2003
(See Section 10 and Rule 13)
HINDUSTAN LEVER LIMITED, a company incorporated under the Indian Companies Act, 1913 and having its registered office at Hindustan Lever House, 165/166, Backbay Reclamation, Mumbai -400 020, Maharashtra, India
The following specification particularly describes the invention and the manner in which it is to be performed
- 1 -COSMETIC SPRAYS
Field of Invention
This invention relates to cosmetic spray compositions having a low VOC (volatile organic carbon) content; in particular, it relates to cosmetic compositions that deliver a deodorancy benefit.
A large number of cosmetic compositions suitable for spray application to the human body are known. Good quality spray
15 generation has been found possible using cosmetic
compositions comprising high levels of volatile propellant and/or ethanol. However, as concerns over the effects of VOCs upon to environment increase, so does the desire to use compositions comprising less of such components. Water is
20 an excellent, environmentally acceptable alternative to ethanol; however, water is not miscible with many of the volatile propellants commonly used and this can lead to formulation problems.
25 A solution to the above-mentioned miscibility problem is the use of dimethylether (DME) as the volatile propellant, in combination with ethanol. The three component system water-DME-ethanol is monophasic over a wide range of formulation space. The use of such systems is described in US 3,544,258
30 (F. Presant et al, 1970); JP 63/137,981 (Kanebo, 1988); JP 02/032,190 (Osaka Aerosol Kogyo, 1990); GB 1,300,399
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(Aerosol Maatschappij Holland, 1972); and DE 3,347,742 (IG Spruchtechnik, 1985). None of the above publications, however, disclose the selected area of water-DME-ethanol formulation space that is key to the attainment of the
5 benefits deriving from the present invention.
Summary of Invention
It is the main object of the present invention to provide a
10 low VOC cosmetic spray composition that gives good spray quality. The route adopted is via optimisation of DME-water-ethanol compositions. Since DME and ethanol are both VOCs, these components are minimised in the compositions of the invention and the water content is maximised. However,
15 certain amounts of DME and ethanol are required in order for the compositions of the invention to have the physical properties (in particular pressure and, to a lesser extent, surface tension) that lead towards good spray quality and good sensory perception for a spray generated therefrom. It
20 is also important that the ratio of DME to ethanol be kept within closely defined parameters in order to achieve the desired physical parameters. Further, it is important that a certain amount of ethanol is maintained in the compositions in order to ease the incorporation of
25 additional organic components, such as fragrance materials. These sometimes-competing requirements are all met by the present invention.
According to a first aspect of the present invention, there
30 is provided a cosmetic spray composition comprising ethanol, DME, and water in proportions of from 11% to 24% by weight
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ethanol, from 33% to 55% by weight DME, and from 27% to 50% by weight water based upon the total weight of ethanol, DME, and water present in the composition, the weight ratio of DME to ethanol being from 2:1 to 3.5:1.
According to a second aspect of the present invention, there is provided a consumer product comprising a cosmetic spray composition according to the first aspect of the invention and a device for producing a spray therefrom.
According to a third aspect of the present invention, there is provided a method of cosmetic treatment comprising the spraying of a composition according the first aspect of the invention onto the surface of the human skin.
It is a further object of the present invention to provide a cosmetic composition, suitable for application to the surface of the human body, which has good sensory properties.
The cosmetic composition according to the first aspect of the invention may be used as a carrier fluid for a cosmetic composition comprising an additional cosmetic active. For the many cosmetic actives that are organic, the presence of
25 ethanol in the composition greatly eases their incorporation therein.
It is a particular object of the present invention to provide a low VOC deodorant spray composition having a good
30 spray quality. One of the means that has been found for delivering the deodorancy benefit is the inclusion in
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compositions of the invention of an additional cosmetic active that is a fragrance. In addition or instead, an additional cosmetic active that is an anti-microbial agent may be used to deliver or augment a deodorancy benefit from
5 compositions of the invention. The use an anti-microbial agent is particularly desirable because it can dramatically increase deodorancy performance without increasing the VOC content of the composition.
10 Detailed Description
The quantitative requirements of a cosmetic composition according to the first aspect of the invention may be represented on an ethanol-DME-water three-component phase
15 diagram. Figure 1 is such a phase diagram where the shaded area represents the 'formulation space' of cosmetic compositions according to the first aspect of the invention. Compositions falling within this relatively small area of formulation space give the benefits that are the aim of the
20 present invention.
The three essential components of the compositions of the invention (i.e. ethanol, DME, and water) preferably represent at least 80%, more preferably at least 90%, and
25 most preferably at least 95% by weight of the total
composition. These high levels improve the attainment of the benefits of the invention, in particular the benefit of good spray quality. As the level of 'other components' increases, the benefits of the invention can decrease.
WO 2005/123025 PCT/EP2005/005853
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Ethanol is present at from 11% to 24%, DME is present at from 33% to 55%, and the combination of ethanol and DME is present at from 50% to 73%, all percentages being by weight, based upon the total weight of ethanol, DME, and water
5 present in the composition. The weight ratio of DME to ethanol in the composition is also essential to the functioning of the invention; this ratio is from 2:1 to 3.5:1, preferably from 2.5:1 to 3.5:1, and most preferably from 2.5:1 to 3.0:1. The above levels and ratios of
10 components enable a good quality spray having good sensory properties to be generated, despite the presence of considerable water in the composition.
The required minimum level of ethanol, and the required and
15 preferred minimum ratios of ethanol to DME, also give
benefits in aiding the incorporation of additional organic cosmetic actives, in particular fragrance (vide infra). These benefits result from the improved solubility of the additional organic cosmetic active in the ethanol, water,
20 DME "carrier fluid". The improved solubility may lead to such benefits as reduced valve blockage, more uniform dispensing of the total composition, and avoidance of the need to shake the formulation before spraying.
25 The formulation space covered when the weight ratio of DME to ethanol is from 2.5:1 to 3.5:1 is represented by the shaded area in Figure 2 and the formulation space covered when the weight ratio of DME to ethanol is from 2.5:1 to 3.0:1 is represented by the shaded area in Figure 3.
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In order to attain the benefit of good spray quality, it is of help if the composition is capable of generating a pressure of from 43 to 55 psig (from 398 to 487 kPa) at a temperature of 21°C. A particularly helpful pressure for the
5 composition to be capable of generating is from 48 to 55 psig (from 432 to 487 kPa) at a temperature of 2l°C. The pressure generated by a composition may be measured by filling a standard aerosol can with the composition to a typical level, say 71% by volume, spraying off 50% by weight
10 of the composition, and then measuring the can pressure using a pressure gauge.
In order for compositions to be perceived as having a good spray quality and good sensory properties it is of help for
15 them to generate a droplet size that is neither too great nor too small. Preferred compositions are able give a D[4,3] droplet size of from 10 to 50 microns and especially from 15 to 40 microns, when sprayed a temperature of 21°C using a conventional dispenser.
Droplet size measurements referred to in this description are made 15 cm from the spray orifice, typically using light scattering techniques, typically with instruments such as the Malvern Mastersizer.
The cosmetic compositions of the present invention typically comprise one or more additional cosmetic actives. In such compositions, the ethanol, DME, and water may be considered as a carrier fluid for the additional cosmetic active(s).
30 It is preferred that the total amount of additional cosmetic actives is not too great, in order not to interfere with the
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good spray quality and sensory benefits delivered by the carrier fluid. The total amount of additional cosmetic actives is preferably 20% or less, more preferably 10% or less, and most preferably 5% or less by weight of the total
In order to serve its purpose, it is important that the additional cosmetic active be present in a sufficient amount. It is preferred that a particular additional
10 cosmetic active is present in an amount of from 0.05%, more preferably from 0.1%, and most preferably from 0.3% by weight of the total composition.
The additional cosmetic active may be selected from any of
15 those known in the art. Particular classes of active include deodorants; skin benefit agents, including sunscreens, desquamating agents, emollients, humectants, anti-ageing agents, wrinkle-reducing agents, skin whitening agents, sebum reducing agents, and skin moisturisers; hair
20 growth modifiers or eliminators (i.e. depilatories); astringents; cooling agents; and colorants.
Additional cosmetic actives that are organic are preferred, as such components tend to be compatible with the carrier
25 fluid, particularly the ethanol therein. It is especially preferred that the additional cosmetic active is soluble in the ethanol-DME-water carrier fluid.
Deodorant actives, including fragrances and anti-microbial
30 agents, and skin benefit agents, in particular skin
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moisturisers, are additional cosmetic actives that are particularly suitable for use with the present invention.
Organic deodorant actives are especially suitable for use 5 with the present invention. This is in part due to their
physical compatibility with the carrier fluid, enabling good quality spray generation, and in part due to the possibility of the carrier fluid augmenting the deodorancy performance of the organic deodorant active. In addition, the
10 particular ratio of DME to ethanol in the compositions of
the invention aids good solubilisation of organic deodorant actives, in particular of fragrances (vide infra).
A particularly preferred additional organic deodorant active
15 is a fragrance. The term 'fragrance' should be considered synonymous with 'perfume' and includes all components of a multi-component fragrance when such is present. When fragrance is present, the co-presence of the required proportion of ethanol in the composition is particularly
20 important in order to aid the fragrance's solubility in the composition. The fragrance may comprise simple volatile odoriferous molecules and/or may comprise so-called "deo-perfume" molecules that have anti-microbial properties. Preferably, a fragrance is present in an amount of from 0.1
25 to 5%, in particular 0.2 to 3%, and especially 0.5 to 2% by weight of the total composition, these amounts referring to the total weight of fragrance components present.
Deodorant actives may work by absorbing malodour or by 30 preventing malodour formation. Deodorant actives
functioning by the prevention of the formation of malodour
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are particularly preferred. (In this description, "preventing" includes partially preventing, i.e. reducing). Such actives may function by preventing the formation of sweat (i.e. as antiperspirants) and/or by preventing the
5 microbial breakdown of sweat components into odorous
molecules. Preferred deodorant actives are anti-microbial agents and function by this latter mechanism.
Especially preferred compositions comprise two or more
10 additional cosmetic actives that are deodorant actives and include at least one fragrance and at least one antimicrobial agent.
Deodorant actives that are anti-microbial agents are
15 preferably organic and may be bactericides or bacteriostats. It should be noted that whilst ethanol can be a deodorant active, it is not an 'additional cosmetic active' as herein described because it is not an 'additional' component, being present as part of the ethanol-DME-water 'carrier fluid'.
Suitable deodorant actives include: quaternary ammonium compounds, such as cetyltrimethylammonium salts; chlorhexidine and salts thereof; and diglycerol monocaprate, diglycerol monolaurate, glycerol monolaurate, and similar
25 materials, as described in "Deodorant Ingredients", S.A.Makin and M.R.Lowry, in "Antiperspirants and Deodorants", Ed. K. Laden (1999, Marcel Dekker, New York). Preferred antimicrobial agents are polyalkylene biguanide salts; poly(alkylene-guanidine) salts; poly(oxyalkylene-guanidine)
30 salts; zinc phenol sulphonate; 2',4,4'-trichloro,2-hydroxy-diphenyl ether (triclosan); and 3,7,11-trimethyldodeca-
- 10 -
2,6,10-trienol (famesol). Particularly preferred antimicrobial agents are polyalkylene biguanide salts; poly(alkylene-guanidine) salts, for example poly(hexamethylene-guanidine hydrochloride);
5 poly(oxyalkylene-guanidine) salts, for example
poly(triethylene-glycol-guanidine hydrochloride); and zinc phenol sulphonate. The above particularly preferred antimicrobial agents are highly compatible with (i.e. soluble in) the ethanol-DME-water carrier fluid, giving rise to
10 superior compositions. Polyhexamethylene biguanide salts, for example Cosmocil CQ available from Arch Chemicals Inc., are especially preferred anti-microbial agents.
In some embodiments of the invention, organic anti-microbial
15 agents that are bacteriostats are used. Suitable
bacteriostats are iron(III) chelators, in particular those
having an iron(III)-binding coefficient of 1026 or greater.
Preferred organic bacteriostatic iron (III) chelators are aminopolycarboxylic acids and salts thereof, in particular
20 the following acids and their salts:
diethylenetriaminepentaacetic acid (DTPA), triethylenetetraaminehexaacetic acid (TTHA), and N,N'-ethylenebis[2-(2-hydroxyphenyl)glycine] (EDDHA).
25 Organic bacteriostatic iron(III) chelators are preferably used in combination with an organic anti-microbial agent that is a phenolic or enolic compound as described in the following paragraph.
30 The composition may comprise an organic anti-microbial agent that is a phenolic or enolic compound that is (a) a
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transferrin dissociation promoter that operates by aiding the reduction of iron(III) bound to transferrin to iron(II) and/or (b) an anti-oxidant comprising a tert-butylphenol group. Such materials are described in WO 02/30383.
5 Preferably, such materials are selected from ascorbic acid (and salts thereof), ascorbyl-6-palmitate, butylated hydroxytoluene, 2,2'-ethylidenebis(4,6-di- tert-butylphenol), or pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) . Butylated hydroxytoluene
10 is especially preferred.
The total amount of organic anti-microbial agent, when present, is preferably from 0.01 to 10%, more preferably from 0.1 to 5%, and most preferably from 0.2 to 2% of the of
15 the total composition.
In order to enhance the sensory benefits of sprays generated from compositions according to the invention, in particular those comprising a deodorant active, a humectant, such a
20 polyol, may be employed. Preferred humectants are glycerol, propylene glycol, and dipropylene glycol; propylene glycol is particularly preferred.
The sensory benefits of sprays generated from compositions
25 according to the invention, in particular those comprising a deodorant active, may be enhanced by the presence of an emollient. Such materials are typically oils and are emulsified into an aqueous continuous phase. Suitable oils include silicone oils, such as DC244, DC245, DC344 and
30 DC345, ex Dow Corning; alkyl esters, such as PurSyn Ester 2E7 (neopentylglycol dihexanoate), ex Exxon-Mobil; benzoate
WO 2005/123025 PCT/EP2005/005853
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esters such as Finsolv TN (Trade Mark), ex Finetex Inc.; hydrogenated polyalkenes, such as Panalane, ex Amoco and PureSyn PAO 2 (hydrogenated polydecene), ex Exxon-Mobil; PPG ethers, such as Fluid AP (PPG-14 butylether) , ex Union
5 Carbide; isopropyl palmitate; phenylsilicone; and isopropyl myristate.
Particularly preferred compositions according to the present invention have a polyalkyleneoxide polysiloxane surfactant
10 present to aid their sensory perception. Such materials can reduce the perception of wetness that may result from the presence of water in the compositions of the invention.
Preferred polyalkyleneoxide polysiloxane surfactants are
15 polyalkyleneoxide-modified polydimethylsiloxanes. These latter materials may be of general formula I:
where Me represents methyl; EO represents ethyleneoxy; PO represents 1,2-propyleneoxy; , x is from 0 to 10, preferably from 0 to 5, and most preferably 0; y is from 1 to 8,
25 preferably from 1 to 3, and most preferably 1; a is from 2 to 4, preferably 3; b is from 1 to 15, preferably from 5 to 15; c is from 0 to 14, preferably from 0 to 3; b + c is from 5 to 15, preferably from 6 to 10; and Z can be either hydrogen or a lower alkyl group.
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For optimum performance, preferred polyalkyleneoxide polysiloxane surfactants have a molecular weight (MW) of less than 1000, in particular less than 800, and especially less than 700. In polyalkyleneoxide polysiloxane
5 surfactants of formula I, the number of EO units must be sufficient to render the surfactant dispersible or soluble in the composition/spray. When c is non-zero in formula I, the EO and PO units may be distributed randomly, in respective blocks of EO and PO units, or in a combination of
10 random and block distributions.
Preferred polyalkyleneoxide polysiloxane surfactants have an estimated HLB value of from 5-8, the HLB value of the surfactant being estimated from its aqueous solubility and
15 cloud point using the method described by Griffin (Off. Dig. Paint and Varnish Productions Clubs, 28, 446, 1956) and later by Schott (J. Pharm. Sci., 58, 1442, 1969).
Suitable polyalkyleneoxide polysiloxane surfactants that are
20 commercially available may be selected from Silwet L-7280, Silwet L-77, and Silwet L-7608, all available from OSi, and DC Q2-5211, available from Dow Corning Corp.
When present, the polyalkyleneoxide polysiloxane surfactant
25 is typically used at a level from 0.01 to 5%, particularly at from 0.05 to 2.5%, and especially at from 0.05 to 1% by weight of the total composition. Especially preferred compositions comprise fragrance at a level of from 1% by weight and polyalkyleneoxide polysiloxane surfactant at a
30 level of from 0.3% by weight of the total composition.
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The polyalkyleneoxide polysiloxane surfactant may also function as a perfume solubiliser, as may other nonionic surfactants such as fatty alcohol ethoxylates or PEG esters or ethers of fatty acids or glycerides. In compositions of
5 the invention comprising a perfume, a perfume solubiliser is a preferred additional component. In such compositions, the perfume solubiliser may help to minimise the amount of ethanol required in the formulation for perfume solubilisation and thereby reduce the total VOC content of
10 the composition. Preferred perfume solubilisers are PEG
derivatives of a triglyceride, in particular a PEG ether of an hydroxylated triglyceride, such as PEG-60 hydrogenated castor oil. The total amount of perfume solubiliser in the composition of the invention is preferably from 0.05% to 5%
15 and more preferably from 0.1% to 3% by weight of the total composition. In general, the weight ratio of the total amount of perfume solubiliser to the total amount of perfume (fragrance) is preferably from 1:4 to 1:1 and more preferably from 1:3 to 1:1.
Other components that may be present include inorganic electrolytes, such as sodium chloride or sodium sulphate; rheology modifiers, such as hydroxypropyl celluloses; silicone gum, such as Q2 1501, ex Dow Corning; colourants;
25 and preservatives, such as Glydant or parabens.
Spray devices suitable for use with the compositions of the invention typically comprise a pressure canister, a valve, and a nozzle. Such devices are well known in the art. In
30 order to aid the spray quality, it is preferred that the
spray device comprises a means for enhancing the atomisation
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of the spray, for example a mechanical break up unit such as a swirl chamber. Such means can help in attaining the droplet size distributions desired from spray compositions according to the invention.
It is greatly preferred that the pressure canister is made from metal, for example tinplate or, more preferably, aluminium. Canisters made from metal have the benefits of being better able to withstand the pressure generated by the
10 composition and being less prone to weakening ingress of components of the composition into the canister material. Problems regarding the aforementioned issues can arise with canisters made of other materials, for example plastic.
15 Metal canisters are preferably lacquered on their inside,
for example with an epoxyphenolic resin or, more preferably, with polyamideimide resin. The lacquer serves to maintain the ability of the can to withstand the pressure generated by the composition, an ability that can be compromised by
20 corrosion of the canister by the water-containing compositions of the present invention.
It is preferred that the spray device is capable of containing and dispensing a cosmetic composition held at a
25 pressure of from 43 to 55 psig (from 398 to 487 kPa) at 21°C, in particular at from 48 to 55 psig (from 432 to 487 kPa) at 21°C.
It is highly preferred that the spray device is capable of
30 generating a spray of D[4,3] droplet size of from 10 to 50
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microns and especially of from 15 to 40 microns when a composition according to the invention is sprayed at 21°C.
The canisters are typically filled to a level of from 62% to 5 77% by volume with the composition. In general, the
components of the composition other than the DME are first added, followed by the DME under sufficient pressure to keep it liquefied at the operating temperature (typically 21°C) .
In the following examples, comparative examples are indicated by letters and examples according to the invention are indicated by numbers. All tabulated amounts are
15 percentages by weight of the total composition.
The examples indicated in Table 1 were prepared by standard methods in the art. The compositions were contained in and dispensed from standard (210 ml) aluminium aerosol
20 dispensers equipped a swirl chamber nozzle. 150 ml of indicated compositions were placed in the aerosol dispensers. Table 1 indicates compositional details for the examples; the can pressures obtained (after 50% by weight of the composition had been discharged); and the D[4,3] droplet
25 sizes obtained upon spraying.
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Table 1: Compositions, pressures, and droplet sizes
Example EtOH (%) DME (%) Water (%) Can pressure (psig [kPa])* D[4,3] (microns) *
A 25 50 25 50  20
B 30 40 30 40  39
1 20 50 30 48  27
2 20 40 40 43  35
3 15 45 40 49  22
D 20 30 50 39  >100
4 12.5 37.5 50 48  36
*Measured at 21°C.
5 Comparative Example A gives an acceptable can pressure and droplet size; however, it contains too much VOC (ethanol and DME) to deliver the main object of the present invention.
Comparative Example B comprises too much ethanol,
10 particularly when compared with the amount of DME present. As a result, it does not achieve the desired can pressure.
Example 1 has a DME to ethanol weight ratio of 2.5:1 and gives a good can pressure of 48 psig (432 kPa) . Similarly,
15 Examples 3 and 4, both of which have a DME to ethanol weight ratio of 3:1, give good can pressures of 49 psig (439 kPa) and 48 psig (432 kPa) respectively. Example 2, which has a DME to ethanol weight ratio of 2:1, gives an acceptable can pressure of 43 psig (398 kPa).
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Comparative Example D comprises too little DME, particularly when compared with the amount of ethanol present. As a result, it does not achieve the desired can pressure and nor does it give the desired D[4,3] droplet size.
The examples indicated in Table 2 were prepared by standard methods in the art. Each of these compositions comprised a perfume and a perfume solubiliser (Cremophor CO60). Example 5 is within the scope of the invention, having a DME to
10 ethanol ratio of 3:1. This example has a clear appearance. Comparative example E is just outside the scope of the invention, having a DME to ethanol ratio of 4:1. This sample is cloudy, indicating a lack of complete solubilisation of the perfume, despite the perfume and
15 perfume solubiliser being at the same levels as in Example 5.
Table 2: Perfumed Compositions and Appearance
5 E 6 7
DME 37.5 40.0 37.5 37.5
Ethanol 12.5 10.0 12.5 12.5
Water 47.4 47.4 47.0 48.2
Perfume 1.5 1.5 1.5 1.5
Cremophor CO60 1.1 1.1 1.5 0.3
Appearance: Clear Cloudy Clear Cloudy
Examples 6 and 7 are both within the scope of the invention; however, Example 6 has a perfume solubiliser to perfume
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ratio of 1:1 and Example 7 has a perfume solubiliser to perfume ratio of 1:5, this latter ratio not being ideal for solubilisation of the perfume in this particular formulation.
The examples indicated in Table 3 were prepared by standard methods in the art. Table 3 indicates compositional details for the examples and also their 'malodour scores', as assessed by expert assessors 5 and 24 hours after spray application for two seconds of the indicated example (low values indicate low malodour).
Table 3: Compositions and Malodour Performance
4 8 9 10
Ethanol 12.5 12.5 12.5 12.5
DME 37.5 37.5 37.5 37.5
Water 50 49 48.5 46
AMP-95* - 0.4 0.4 0.4
DTPA - 0.5 0.5 0.5
BHT - 0.1 0.1 0.1
Farnesol - - 0.5 -
Triethyl citrate - - - 3
After 5 hr. 2.49 1.97 1.74 2.00
After 24 hr. 2.96 2.01 2.09 2.11
15 2-amino-2-methyl-1-propanol (95% w/w) and water (5% w/w)
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Examples 8, 9, and 10 gave significantly lower malodour scores (at the 99% level) than Example 4, after both 5 hours and 24 hours.
5 The further examples indicated in Table 4 were also prepared by standard methods in the art. In addition to a fragrance and anti-microbial agents, Example 11 also comprises a perfume solubiliser (Cremophor CO60) and Example 12 comprises a polyalkyleneoxide polysiloxane surfactant
10 (Silwet L7608), to enhance the sensory properties'.
Table 4: Further Compositions
11 13 14 15
Ethanol 12.5 12.5 12.5 12.5
DME 37.5 37.5 37.5 37.5
Water 47.1 47.1 49.5 46.8
AMP-95* 0.4 0.4 - -
DTPA 0.5 0.5 - -
BHT 0.1 0.1 - -
Silwet L7608 - 0.5 - 0.5
Cremophor CO60 0.5 - — -
Cosmocil CQ - - 0.5 -
ZPS3 - - — 2.7
Fragrance 1.4 1.4 - -
* 2-amino-2-methyl-1-propanol (95% w/w) and water (5% w/w)
1. PEG-60 hydrogenated castor oil, ex BASF.
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2. Polyhexamethylene biguanide hydrochloride, ex Arch
Chemicals Inc., a 20% w/w aqueous solution - hence 0.1% of anti-microbial agent was present in the final composition.
5 3. Zinc phenol sulphonate.
1. A cosmetic spray composition comprising ethanol, DME, and water in proportions of from 11% to 24% by weight
5 ethanol, from 33% to 55% by weight DME, and from 27% to 50% by weight water based upon the total weight of ethanol, DME, and water present in the composition, the weight ratio of DME to ethanol being from 2:1 to 3.5:1.
10 2. A cosmetic deodorant spray composition according to
claim 1, wherein the ethanol, DME, and water represent at least 95% by weight of the total composition.
3. A cosmetic spray composition according to claim 1 or
15 2,wherein the weight ratio of DME to ethanol is from
2.5:1 to 3.5:1.
4. A cosmetic spray composition according to any of the
preceding claims that is able to generate a pressure of
20 from 43 to 55 psig (398 to 487 kPa) at 21°C.
5. A cosmetic spray composition according to any of the
preceding claims comprising an additional cosmetic
6. A cosmetic spray composition according to claim 5,
wherein a particular additional cosmetic active is
present in an amount of from 0.1% and the total amount
of additional cosmetic actives is 5% or less,
30 percentages being by weight of the total composition.
7. A cosmetic spray composition according to claim 5 or 6, wherein the additional cosmetic active is a deodorant active.
5 8. A cosmetic spray composition according to claim 7, wherein the deodorant active is an anti-microbial agent.
9. A cosmetic spray composition according to any of claims
10 5 to 8, wherein the additional cosmetic active is
10. A cosmetic spray composition according to claim 9,
wherein the additional organic cosmetic active is a
11. A cosmetic spray composition according to claim 8,
comprising two or more additional deodorant actives
including at least one fragrance and at least one anti-
20 microbial agent.
12. A cosmetic spray composition according to claim 10 or
11, wherein the fragrance is present in an amount of
from 0.1 to 5% by weight of the total composition.
13. A consumer product comprising a cosmetic spray
composition according to any of the preceding claims
and a device for producing a spray therefrom.
30 14. A consumer product according to claim 13, wherein the spray device is capable of containing and dispensing a
WO 2005/123025 PCT/EP2005/005853
composition held at a pressure of from 43 to 55 psig (from 398 to 487 kPa) at 21°C.
15. A consumer product according to claim 13 or 14, wherein
5 the spray device is capable of generating a spray of
D[4,3] droplet size of from 10 to 50 microns when used to spray the composition at a temperature of 21°C.
16. A method of cosmetic treatment comprising the spraying
10 of a cosmetic composition according to any of claims 1
to 13 onto the surface of the human skin.
Dated this 13th day of December 2006
HINDUSTAN LEVER LIMITED
(S. Venkatramani) Senior Patents Manager
|Indian Patent Application Number||1529/MUMNP/2006|
|PG Journal Number||24/2012|
|Date of Filing||13-Dec-2006|
|Name of Patentee||Hindustan Lever Limited|
|Applicant Address||Hindustan Unilever House, 165-166 Backbay Reclamation, Mumbai 400 020,|
|PCT International Classification Number||A61K7/32|
|PCT International Application Number||PCT/EP2005/005853|
|PCT International Filing date||2005-05-30|