CA1106329A - High concentration metered aerosol antiperspirant product - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE

An article of manufacture comprising a metered aerosol container having incorporated therein an antiperspirant material, in high concentration suspended in an oily vehicle and containing relatively low levels of propellant.

Description

~L~LC~i3Z9 HIGH CONCENTRAT~ON METERED AEROSOL
ANTIPERSPIRANT PRODUCT
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This invention relates to an aerosol antiperspirant suspension system and, more particularly, to an aerosol antiperspirant of this type employing a propellant, preferably a hydrocarbon propellant, and active antiper-spirant materials at relatively large concentrations.
The use of aerosol systems for applying antiper-spirant materials to the underarm has proven to be one of the most convenient ways of delivering these materials.
In these systems, fluorocarbon propellants ware previously found to be most suitable since they were thought to be ; safe because of their non-flammability.
~ evertheless, there were certain limitations in the practical application of these systems in delivering ` antiperspirant materials. One item that was constantly a problem was the fact that in these systems, aerosol valve clogging-problems were encounterad. To deliver a commercially satisfactory product in which the clogging~problem was controlled within acceptable limits, it was necessary to limit the antipers~irant material in the system to a level of from about 4-5% of active antiperspirant material suspended in the system.
~ To obtain satisfactory antiperspirant activity ;~ by underarm application, it was necessary to deposit the antiperspirant material under the arm in a suffici-~; 25 ently large dose to be effective. It has been deter-~ mined and it has been adopted~as an industry standard .- ~ :
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that a dose of between 100-130 milligrams of active anti-perspirant material e.g. aluminum chlorhydrate is an effec~ive dose. The prior art fluorocarbon propellant systems containing 4-5% of active antiperspirant have a product delivery rate of 1200 mg/sec which delivers about 48-60 milligrams of active antiperspirant material per second. To deliver an efective dose of antiperspirant material in these systems, it was necessary then to apply the material for a period of two seconds.
Because of the character of the spray dispensed from ., .
these aerosol systems, this two second spray did not present too much of an inhalation problem. The product ,.
did not stay suspended in the air forming a fog or mist - but rather settled quite promptly.
With the advent of the environmental concern with the fluorocarbon propellants, the search for a substitute propellant was undertaken by the industry. It was soon - found that hydrocarbon propellants could be employed in the antiperspirant aerosol suspension systems. However, ; 20 new problems were encountered. It was found that when the hydrocarbon propellant was substituted for the fluorocarbon propellant and the material was dispensed for two-seconds as per the prior art procedure, a cloud of product was produced that stayed suspended in the air for relatively long periods of time. This intro-- duced a potential for inhalation problems.
: It has now been found that the aforesaid potential inhalation problems can be significantly diminished by incorporating a relatively large quantity of powdered active antiperspirant material distributed in a substan-tially anhydrous oil system, suspending this in a relatively '' , ` .

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small quantity of propellant (preferably a hydrocarbon propellant) and dispensing the same from an aerosol container having a meterecl valve designed to deliver uniform dosages of active antiperspirant ingredients when the aerosol valve is actuated. This system has the virtue that notwithstanding the relatively high concentrations of powderecl active antiperspirant mater-, ials suspended in the syst:em, substantially no clogging or malfunction of the valve occurs.
It is accordingly an object of the present inven-tion to provide an aerosol antiperspirant system of the suspension type having relatively high concentra~
tions of active antiperspirant material suspended in the system but with a relatively low potential for producing persistent clouds of product when sprayed into the atmosphere.
It is also an object of the present invention to provide a system of the type described in the above object in which the potential for clogging or malfunction of the aerosol valve is minimal.
It is a further object of the present invention to provide an article of manufacture comprising an aerosol container provided with a metered valve and containing powdered active antiperspirant material in relatively high concentrations suspended in a substantially anhydrous liquid containing a propellant; said propellant as compared with prior art products constitutin~ a relatively small proportion of the composition contained in the aerosol ` ~ container~
Other and more detailed objects of this invention will be apparent from the following description, claims .
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and drawings wherein:
Fig. 1 is a longitudinal elevation partly in sectlon of a metered aerosol valve and container that may be employed in practicing the present invention.
Thus the present invention provides as an article . of manufacture an aerosol container having enclosed therein a composition comprising an active antiperspixant material under pressure and means for discharging said composition from said container, said composition comprising based on the total weight of the composition: (a) from about 20% to about 50~ of an active antiperspirant material; (b) from about 20% to about 50% of an oily material; and (c) from about 20% to about 50% of a propellant said composition discharging means including a metered valve designed to deliver said active antiperspirant material in metered doses;
the concentration of the ingredients in said container and the dimensions of said metered valve being such as to deliver a dose of ~rom about 40 to about 80 mg of active ingredient with each discharge.
The propellant may preferably be a hydrocarbon propellant. The oily material may in a preferred em~odiment be a li~uid oil having a vapor pressure no greater than about 1 mm of ~g at body temperature. Preferably such an article of manufac~ure is provided in which said oily material is a li~uid oil selected from the group consisting of liauid hydrocarbons; fatty acid monoesters; diesters of dicarboxylic acids; polyoxyalkylene glycol esters; propylene glycol diesters of short chain fatty acids (C8-ClO); polyoxyethylene ; ethers; polyoxypropylene ethers; higher fatty alcohols;
propoxylated monohydric alcohol M.W. 880-930; silicone oils and mixtures thereof. Also preferably such an article includes from about 0.1% to about 5.0% by weight based on the total weight of the composition of a suspenaing agen~.
In ano~her embodiment the present invention provides, as an article of manufacture, an aerosol container having .` ,~

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~$~3~9 4(a) -: enclosed therein a composltion comprising an active anti-perspirant material under pressure and means for discharging said composition from said container in the form of a spray, said composition comprising based on the total weight of the composition: (a) ~rom about 30~ to about 40% of an -~ active antiperspirant material; (b) from about 30% to about 40% of an oily material; and (c) from about 25~ to 35% of a propellant said composition dischar~ins means including a metered valve designed to deliver said active antiperspirant - lO material in metered doses; the concentration of the ingredients in said container and the dimensions of said metered valve being such as to deliver a dose in the range of from about 48 mg to about 65 mg o~ active ingredient with each discharge.
As noted above, it is a feature of the present invention to provide an aerosol antiperspiran~ composition in ; which the active antiperspirant in powdered form is suspended in the fluid system in relatively high concentrations. The ; quantity of antiperspirant material may vary somewhat but it will be in the range of about 20 to about 50% and pre~erably between about 30 to about 40~ by weight based on the total weight of the composition.
The active antiperspirant material that may be employed - in the present invention may be any one of a number of materials known in this art to exhibit this property which may be prepared as a powdered material capable of bei.ng ~ suspended in the fluid medium in accordance with the present : invention. By way of examples, we mention aluminum chlor-; hydroxide, aluminum chloride, aluminum chlorohydrex propylene glycol complex, aluminum zirconium complexes, sodium aluminum - chlorohydroxy lactate of mixtures thereof. Typical of the mixed active antiperspirant materials that may be emploved herein are ~he aluminum chloride-aluminum chlorhyd~oxlde ` powdered materials described in Canadian Patent 958,338; said r'` ' 35 patent being incorporated herein by way of reference.
' It is also a feature of the present invention to provide ` an oily material, preferably a liquid, which _ 4(a) -.. ,~j, h ~
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will serve as a vehicle for suspending the powdered anti-perspirant material employed herein. Aside from this function, the oily material will serve as an emollient to ~ive the skin a good ~eel when the product is deposited on it from the aerosol can and serve as a means for retaining the active mater:ial at the site on which it is deposited. For the latter reasons, it is advantageous to employ oily materials that are not especially volatile under the conditions under which it is applied to the skin e.g. one that does not have a vapor pressure above about 1 mm of Hg at body temperature. By way of illus-tration of the oily materials that may be employed herein, the following may be mentioned: liquid hydrocarbons (mineral oil); fatty acid monoesters (isopropyl myristate, isopropyl palmitate); diesters of dicarboxylic acids (diisopropyl adipate); polyoxyalkylene glycol esters (poly-propylene glycol 2000 monooleate); propylene* glycol diesters of short chain fatty acids (C8-C10) (Neobee M20); polyoxy-ethylene ethers ((polyoxyethylene(4)1auryl ether (Brij 30~, polyoxyethylene(2)ole~1 ether (Brij 92), polyoxyethylene (lO)oleyl ether (Bri~ 96, Volpo 10~ ; polyoxypropylene . .
cetyl ether (Procetyl); higher fatty alcohols (oleyl, ` hexadecyl, lauryl); propoxylated monohydric alcohol M.W.
880-930 (Fluid AP); silicone oils (dimethyl polysiloxane 10-1000 centistokes). Mixtures of the above liquids are equally suitable for the purposes of this invention.
- The quantity of oily material that will be contained ; in`the composition of the present invention may also vary somewhat depending on the results desired. For the most part, it wil~l comprise from about 20% to about 50% by weight and preferably from about 30~ to about 4~ by weight based on the total weight of the composition.
It is also desirable to incorporate in ~he aerosol ' ~
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. ' ' r,~;329 compositions of this invention suspending agents to fur-ther prevent caking of the powder and to enable redisper-sing the powder by simple agitation. A variety of materials may be used (alone or in combination) for this purpose, among wh*ich may be mentioned:
~a) Cab-O-~il (Cabot Co.) (Fumed Silica) ` (b) Bentone 34 or Bentone 38 (dimethyl dioctadecyl ammonium bentonite or he~torite, respectively) (c~ Veegum F (R. T. Vanderbilt Co.) (microfine magnesium aluminum silicate) ` (d) Microthene (U.S.I.) (polyethylene powder) (e) Metal soaps of fatty acids (e.g.
powder aluminum stearate, aluminum octoate) The quantity of suspending agent that will be con-tained in the present composition may also be employed over a range of concentrations. Usually, this will fall ; 20 within the range of from about 0.1 to about 5.0~ by weight based on the total weight of the composition. The pre-ferred range for these materials, however, will be from ` about 0.5 to about 1.5% by weight based on the total weight of the composition.
A further aspect of this invention is that the "
present compositions contain relatively small quantities ~; ~ of propellant. This too may vary somewhat but, in general, this will amount to from about 20 to about 50% by weight based on the total weight of the composition. In the ; 30 preferred form of this invention, the propellant will constitute in the range of from about 25~ to about 35~
by weight based on the total weight of the composition.
~ As previously indicated, because of environmental ','.:' ~ :
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~7--considerations, it is desirable to use a hydrocarbon pro-pellant in the present invention. The h~drocarbon propel-lants that are useful herein are those that are well known in the art. These are the liquified normally gaseous aliphatic hydrocarbons i.e. those that are gaseous at ambient pressures and temperatures. Generally, these propellants should have a boiling point lower than about 75F and a vapor pressure from about 25 to 70 pounds - per square inch gauge (psig) at 70F, preferably between 30 and 40 pounds psig. A suitable vapor pressure can also be produced by blending two different propellants such as propane and isobutane. By way of illustrating those hydrocarbon propellants that are useful herein, mention may be made of n-butane, isobutane, propane, pentane, isopentane and mixtures thereof. However, the propellants of choice are isobutane and n-butane.
Although the hydrocarbon propellants described above are preferred in practicing the present invention, ; other types of propellants can be employed. Thus, the ` 20 well-known liquified normally gaseous halogenated hydro-carbon and particularly, the chlorofluorohydrocarbons may be utilized herein. These include such ~aterials as 1,2-dichloro-1,1,2,2-te*trafluoroethane (Freon 114);
trichloxofluoromethane (Freon 11~; dichlorodifluoro-methane (Freon }2); trichlorofluoroethane tFreon 113);
chl~orodifluoroethane ~Freon 14~B); chlorodifluoromethane (Freon 22); methylene chloride and mixtures thereof.
In addition to the aforesaid ingredients, other auxilliary agents well known to those skilled in the art may be incorporated in th~ present co~position in effective quantities. These additives include:
1. Antibacterial and~antifungal agents such as hexachlorophene, quaternary nitrogen compounds ' .

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(benzethonium chloride), benzoic acid, resorcinol mono-acetate, chlorobutanol, Vancide 89RE, zinc omadine, etc.
2. Fragrance

3. Slip Agents (e.g. talc, zi~c stearate)

4. Surfactants (e.g. Arlacel 80 sorbitan mono-oleate)

5. Pigments (e.g. titanium dioxide)

6. Fabric Damage Reducing Agents (e.g. urea, glycine) *

7. Anticorrosion Agents: Gafac RM 510 (ethoxylated dinony~ phenyl mono and diester of phosphoric acid);
Crodafos CAP (propoxyl*ated cetyl mono and diesters of phosphoric acid); Epoxol 8-2B (epoxidized butyl esters of linseed oil fatty acids).
Another feature of the present invention is the use of a metered valve on the aerosol container contain-ing the composition described above. A typical valve that may be employed herein is shown in Fig. 1, although this is by no means the only construction that is useful for ~;~ 20 our purposes.
Referring to Fig. 1 the valve mounting cup is shown ~, at 2 and is employed to mount the assembly shown in this Fig. 1 onto an aerosol can containing product and is secured thereto by crimping lip 4 to the can.
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The metered valve comprises a metering chamber 6 formed by genexally cylindrical housing 8. The upper end of metering chamber 6 is closed off by top gasket 10 - which forms an airtight seal. The lower end of metering chamber 6 is formed by the upper end dip tube 12 which is provided with valve seat 14 adapted to receive the end of valve stem 16 described in more detail below.
The internal diameter of the lower portion of metering chamber 6 is smaller than the internal diameter ,i ~
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g of the upper portion of metering chamber 6 thereb~ form-ing a flange 18 for support of lower gasket 20. Lower gasket 20 is provided with a centrally disposed hole which has a diameter which is larger than the external diameter of valve stem 16 below the valve stem stop 22.
Because of the size of the opening in lowex gasket 20, the upper portion 24 of metering chamber 6 is in communi-cation with the lower portion 26 of metering chamber 6.
Furthermore, because o~ the size of the opening in lower gasket 20 when valve stem 16 is depressed, the major portion of valve stem 16 below stop 22 may pass through the opening in gasket 20.
~ In assembling the metered valve employed herein, -~ a coiled spring 28 is inserted so that its lower end ~.
. 15 rests on gasket 20 and its upper end lies just below stem stop 22. When spring 28 is in its extended position, it urges stem stop 22 upwardly against the under surface o upper gasket 10.
Valve stem 16 is hollow; open at the top but closed at its lower en~ by stem end 30. Stem 16 is also pro vided with a hole 32 that is bored through the stem .. wall and into the hollow o~ stem 16. When assembled, a valve button 34 is provided having internal channels ~hat co~municate with the internal hollow o~ stem 16 and to the atmosphere through opening 36.
In operation, when the valve stem 16 is in its extended position as shown in Fig. lj the product under pressure filIs metering chamber 6. When valve stem is depressed, it is depressed until the valve stem end 30 ::~ 30 engages and seats in valve seat 14, thereby cutting ~:~ off the communication between the interior of the aerosol can and metering chamber 6. At the same time, the measured quantity of product in metering chamber 6 "

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, is expelled since it is under pressure. The volume of metering chamber 6 can be varied by changing the length of cylindrical housing 8 and/or lowering the top end of dip tube 12 disposed inside cylindrical housing 8.
The quantity of product delivered and as a con-~; sequence, the quantity of antiperspirant material that will be deposited at the site of application with each discharge will be dependent on the volume of the metering chamber, the density of the product that is contained in the metering chamber and the concentration of the active antiperspirant materials in the product. These parameters may vary within the following ranges:

i (l) volume of metering chamber about : 50 to 250 microliters;
~; 15 (2) density of product about 0.9 to 1.2; and (3) concentration of active about 20~ to 50% by weight based on the total weight of product ~ These parameters are adjusted to deliver between about ,i; 20 40 to 80 mg by weight of actives and preerably between about 48 t~ 65 mg of actives with each discharge.
The metered valve system of this invention allows a uniform dosage each time the actuator is depressed, but at the same time causes all the product held in the ~ 25 metering chamber to be totally expelled or purged. By ,~ this purging no buildup is allowed in the stem or hctuator portion of the system, the main areas of valve ~ clogging problems.
i The metered dose with high solids content delivered in accordance with the present invention gives a non-~fogging spray. ~imiting the amount of propellant sprayed as per the instant invention reduces the flammability.
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.. --11--In addition, since we concentrate the actives, we can - obtain more uses per given can volume. Moreover, the product goes on as a dry, warm and gentle spray.
The valve systems now used in the standard antiper-spirant aerosol all contain a vapor tap. The vapor tap mixes gaseous propellant with the product inside kh0 valve at the stem orifice. The resultant spray is fine and dry, causing the suspended antiperspirant powder to fly ; into a cloud which floats in the air. This cloud of suspended antiperspirant powder is the cause of choking `~ and inhalation problems.
The metered valve systems employed herein have no vapor tap; therefore, the resultant spray particles are large and fall to the ground rather than be suspended in the air. This tends to eliminate inhalation problems.
Furthermore, the metered system of the present invention uses a concentrated dosage. Because we use, for example, between 30-40% of active antiperspirant material in our metered aerosol as compared to around 10 in standard vapor tap antiperspirant aerosols, we will spray about 75~ less can contents into the air than the standard aerosol system. This, along with our non-vapor tap metered system, will give a spray with lessened ~ inhalation problems.
;; 25 The following Examples are given to further illus-trate the present invention. It is to be understood, however, that this invention is not limited thereto.
The ~ollowing terms used in the Examples given below have the following meanings:
* , Bentone 38: dimethyl dioctadecyl hectorite Emollient 60: isopropyl palmitate/isopropyl myristate (60/35) . ~ .
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Alcohol SDA 40: denatured ethyl alcohol amino acetic acid - Preparation of Concentrate % by Wt.
5Aluminum chlorhydrol ; (Macrosphericals 9';) 50.0 ~ Emollient 60 25.0 ~
; *Bentone Gel 25 0 ~".,:
'; 100. 0 ~, * Bentone Gel ~ by Weight: 10.0% Bentone 38; 10.0%
i~ 10 Alcohol SDA-40; 80.0% Emollient 60 ^~ The Bentone Gel is added to a Hobart pot while mix-;~ ing slowly. The Emollient 60 is then added thinning out gel. The actives are added slowly when the gel is thoroughly mixed. The mixture is placed in a Warlng blender and blended for 1 minute at medium speed. This concentrate is then packaged as described below.
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Sixty-six parts by weight of the above concentrate - were charged into each of eleven aerosol cans which had a diameter of 202 centimeters~and a height of 314 centi-meters. These were equipped with B-l~M metered valves (Ethyl Corp.) shown in Fig. 1 having a ~etering chamber ; ~ with a volume of 175 microliters (measured by the de~livery of 175 mg of water). These cans were then filled with 34 parts by weight of~either isobutane or n-butane~using the under cup filling technique. The cups were then crimped to the tops of the cans.
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~; The furthsr specifications of the metering valves employed are as follows: .030 stem, B18-5J spring, buna N seal and diaphram, dip tube I.D. ~040.
The following experiments were carried out to compare the degree of foggi;ng or product cloud formation * Trade Mark ... ......
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that follows the use of the present product as compared with prior art products.
Experimental Procedure:
Prior to the experiment, two filter pad holders per subject were equipped with tared Gelman Metricel DM-800 filter pads. Each pad was weighed on an analytical balance, sensitive to 0.01 mg. The subject wearing the particle sampler holder (Gelman in line filter holder) connected to a HASL cyclone (Model 1~) which eliminates particles 10 ug, entered a simulated home bathroom (5' x 5' x 8').
The cyclone and filter holder are secured to the subject's head so that the cyclone portion of the apparatus is sus-pended in the breathing zone of the panelist. A tygon vacuum tube connects the filter pad holder via the door sill to a wet test meter, vacuum pump and electric timer located outside of the test room. A specific air sampling flow rate of 9 liters/minute maintained by adjustment of vacuum pump.
Upon entering the room a panelist is equipped with the first tared filter pad. A 15 minute control sample of ambient air from the breathing ~one is collected.
He is then fitted with the second ~ilter pad, instructed to hold the test product 6" from the exposed underarm, and spray twice to each axilla and remain seated for the 15 minute treatment collection.
At the end of the sampling periods, the tared filter pad is removed from the sampler and weighed to determine the amount of respirable material in the breathing zone.
In addition to the gravimetric method of determining the amount of respirable residue deposited, a ferron method for aluminum analysis was employed. Aluminum forms a colored complex with ferron (8 hydroxy-7 iodo-5 quinolene sulfonic acid~ which has a maximum absorbance at 3~0 mu.

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; (Davenport, W.H., Anal. Chem. 21: 710 (1949). An ex~osed filter pad is placed in a 50 ml beaker with 5 ml o~ a ~, 0.5N HC1 solution. Both are heated (almost to boiling) for 10-15 minutes. After making appropriate dilutions, the ' 5 solution is reacted with ferron and read at 370 mu vs. the ; reagent blank in absorption cells o the Beckman D B-G
Spectrophotometer.
Four test products were used in the experiments s;~ identified by the codes F #1072~ F ~769, F ~1039 and Triad metered A/P spray. The compositions of these formulas are given below:
F #1072 .'~ , Ingredients % by Wt.
Isopropyl Palmitate-Myristate (60~-35%) 2.00 Isostearamide DEA
; (Monami*d 150 IS-Mona Industries) 0.80 Dimethicone 500 Centistokes ;~ (Silicone SWS-101, 500 CSTK
~ 20 Stau~fer Wacker Silicone Corp.) 0.40 ; Perfume 1833-W (IFF) 0.15 .
'; Aminoacetic Acid (Glycine Crystal ~i (USP - Robeco) 0.60 ~ Water, deionized 8.05 ;~ ~ 25 Aluminum chlorhydroxide 50%22.90 Aluminum chloride hexahydrate solution 50% * 5.10 Talc 2755, Lo-Micron 5.00 Isobutane (CP Grade) 55.00 100.00 :
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., ' F #769 Ingredlents % by Wt.
*BM Special Aluminum Chlor-hydroxide Type II 5.50 Colloidal Silicon Dioxide, M-5 0.23 Dimethyldioctadecyl Ammonium : Bentonite 0.23 Isopropyl Palmitate-Myristate ~0%-35%) 7.00 ~ 10 Perfume 4216T (IFF) 0.30 ; Propellant 11 56.38 Propellant 12 30.36 : 100. 00 .`
* Spray dried aluminum chlorhydroxide (80~) aluminum chloride (20%) mix F #1039 : Ingredients % by Wt .

Alu~inum chlorohydrate complex (Rehydrol-Reheis) 15.00 Alcohol SD-40, Anhydrous ::~ (Brucine Sulfate) 69.25 Isopropyl Palmitate-Myristate (60%-35%) 10.00 Isostearic Acid (Emery 871-- 25 Emery Ind.) 1.00 Polyoxyethylene(4)lauryl ether 0.75 ~: Polyoxyethylene(23)lauryl ether 0.25 Aluminum Chloride Hexahydrate Solution 50% 2.00 :~ 30 Aminoacetic Acid (Glycine Crystal ~F-Robeco) 0.50 Water, deionized 0.75 Perfume 1758-Y (IFF) 0.50 100.00' :

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Triad Metered A/P Spra~
Concentrate ~ by Wt.
: *BM Special Aluminum Chlorhydroxide Type II 50.0 - 5 Emollient 60 47.0 Bentone 38 1.5 Alcohol SD 40 1.5 '' 100.O
~' Aerosol -Concentrate ~ 66.0 Isobutane 34.0 ', 100.O
* Spray dried aluminum chlorhydroxide (80%) aluminum chloride (20%) mix Formulas F ~1072 and F #769 were dispensed from conven-tional aerosol cans; whereas formula F #1039 was dispensed from a pump spray container. The Triad metered A/P
` spray composition was dispensed from the metered aerosol container shown in Fig. 1 The results of these studies are summarized in Tables I and II below.
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Claims (16)

WHAT IS CLAIMED IS:

1. As an article of manufacture an aerosol container having enclosed therein a composition com-prising an active antiperspirant material under pressure and means for discharging said composition from said container, said composition comprising based on the total weight of the composition:
(a) from about 20% to about 50% of an active antiperspirant material;
(b) from about 20% to about 50% of an oily material; and (c) from about 20% to about 50% of a propellant said composition discharging means including a metered valve designed to deliver said active antiperspirant material in metered doses; the concentration of the ingredients in said container and the dimensions of said metered valve being such as to deliver a dose of from about 40 to about 80 mg of active ingredient with each discharge.

2. An article according to Claim 1 in which said propellant is a hydrocarbon propellant.

3. An article of manufacture according to Claim 2 wherein said propellant is selected from the group consisting of n-butane, isobutane and mixtures thereof.

4. An article of manufacture according to Claim 2 in which said oily material is a liquid oil having a vapor pressure no greater than about 1 mm of Hg at body temperature.

5. An article of manufacture according to Claim 4 in which said oily material is a liquid oil selected from the group consisting of liquid hydro-carbons; fatty acid monoesters; diesters of dicarboxylic acids; polyoxyalkylene glycol esters; propylene glycol diesters of short chain fatty acids (C8-C10); polyoxy-ethylene ethers; polyoxypropylene ethers; higher fatty alcohols; propoxylated monohydric alcohol M.W. 880-930;
silicone oils and mixtures thereof.

6. An article of manufacture according to Claim 4 including from about 0.1% to about 5.0% by weight based on the total weight of the composition of a sus-pending agent.

7 An article of manufacture according to Claims 1, 2 or 3 in which the active antiperspirant material is aluminum chlorhydroxide.

8. An article of manufacture according to Claims 4, 5 or 6 in which the active antiperspirant material is aluminum chlorhydroxide.

9. As an article of manufacture an aerosol con-tainer having enclosed therein a composition comprising an active antiperspirant material under pressure and means for discharging said composition from said con-tainer in the form of a spray, said composition comprising based on the total weight of the composition:
(a) from about 30% to about 40% of an active antiperspirant material;
(b) from about 30% to about 40% of an oily material; and (c) from about 25% to 35% of a propellant said composition discharging means including a metered valve designed to deliver said active antiperspirant material in metered doses; the concentration of the ingredients in said container and the dimensions of said metered valve being such as to deliver a dose in the range of from about 48 mg to about 65 mg of active ingredient with each discharge.

10. An article of manufacture according to Claim 9 in which said propellant is a hydrocarbon pro-pellant.

11. An article of manufacture according to Claim 10 wherein said propellant is selected from the group consisting of n-butane, isobutane and mixtures thereof.

12. An article of manufacture according to Claim 140 in which said oily material is a liquid oil having a vapor pressure no greater than about 1 mm of Hg at body temperature.

13. An article of manufacture according to Claim 12-in which said oily material is selected from the group consisting of mineral oil; isopropyl myristate, isopropyl palmitate; diisopropyl adipate; polypropylene glycol 2000 monooleate; propylene glycol diesters of C8-C10 fatty acids; polyoxyethylene(4)lauryl ether, polyoxyethylene(2)oleyl ether, polyoxyethylene(10)oleyl ether; polyoxypropylene cetyl ether; oleyl alcohol, hexadecyl alcohol, lauryl alcohol; propoxylated mono-hydric alcohol having a M.W. in the range of from 880-930; dimethyl polysiloxanes having a viscosity in the range of from 10-1000 and mixtures thereof.

14. An article of manufacture according to Claim 13 including from about 0.1% to about 5.0% by weight based on the total weight of the composition of a sus-pending agent.

15. An article of manufacture according to claims 9, 10 or 11 in which the active antiperspirant material is aluminum chlorhydroxide.

16. An article of manufacture according to Claims 12, 13 or 14 in which the active antiperspirant material is aluminum chlorhydroxide.