CA1088428A - Sodium bicarbonate and organopolysiloxane in deodorant aerosol - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE

A body deodorant spray product containing no antiperspirant but containing sodium bicarbonate as active ingredient in admixture with an organopolysiloxane liquid, a suitable propellant and an optional minor amount of fragrance and delivered from a container of specific dimensions in valve design provides an efficacious deodorant which can be delivered without the chilling effect charac-teristic of many deodorants and antiperspirants.

Description

J&J ~50 ~08B4Z8 DEODORANT SPRAY

Perspiration is a normal phYsiologlcal response and a means o~ maintaining suitable body temperature.
Unfortunately, microorganisms normally present on the body surfaces tend to convert the secreted body ~luids into products which have an unpleasant odor The ma~or method ~or the control of these odors ha~e been b~ the use of antiperspirants. From the stand-point of achie~- -~ng odor control without interference of a physiological ~unction, the use of antiperspirants is less preferable than the use o~ deodorants. The expression '!d$0dorant~
as herein employed re~ers to a means ~or removlng undesir-able odor without inhlbiting perspiration. However, many ~vailable body deodorants have tended to be odor masking perfume compositions or germicide compositions which ~`
inhibit bacterial activity on the skin, or employ the combined ef~ects o~ germicide and a ~ragrance. Although ~.
sodium bicarbonate is known to have odor remo~al capabil- ;.. `.
lties by reacti~g with odor causing materials, use o~ it for body odor control has not been as ~requent as use o~
antiperspirants. .~ -- ~ ;' Moreover, both antiperspirant and deodorant com-positions in mos~ `of the ~orms presently a~ailabl~ have

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certain undesirable properties, Thus, compositions in the form of sticks., roll-ons, creams and liquids tend to have uncomfortable sensation on ~he skin, tend to stain ~ -and dye bleed on ~abrics and tend to have relatlvely long drying times, Compositions in the form of aerosols of the solution type eliminate some of these di~advanta~es but they generally have wet and chilling characteristics ~ ~
-rendering their use uncomfort~ble, Aerosol compositions ~ : :
in which the active ingredien~ in powdered form is sus~
pended in a liquified propellant (pollder aerosols) althou~h :~
more comfortable still have wet and chillin~ ef~ects, . :
Powder aero501s ~re~uently have addi~ional problems :lnclud-' ing uneven distribution~ valve clog~lng, and excessive .
ro~ging, . ;;;

In addition to the fore~oing, special problems are encountered in attempting to use sodlu~ bicarbonate in a ~`
powder aerosol form not encountered in similar use o~
antiperspirants such as aluminum chlorohydrate, The . : :
problems seem to be.associated with the harder and more irregular nature o~ sodium bicarbonate po~1der which does not permib alu~inum chlorohydrate packaging techni~ues : to be complete~y translated to the packaging of sodlum ~bicarbonate deodorant, and which further renders it difricult to formulate a product having an adequatély :
high level of sodium bicarbonate active ingredient, ':

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1~88~Z~3 J&.T iS50 ~~ It ls the ob~ect Or the present lnventlon to provide a body deodorant in a powder aerosol ~orm which is substantially rree Or the undesirable a~pllcation characteristics ~r common antiners~irant arld deodorant compositions J particularly, the chillin~ efrect. It ls particularly the obJect Or the present invention to pro~de sodium bicarbonate in a powder aerosol which is warm, dr~r and ; rree o~ delivery problems such as valve clo~ln~ or ~ogging and moreover is in hiFh enou~h concentration so that delivery Or signiricant amounts of the active in~redient may be aohieved.

I~ has been discovered that by employln~ a corn-posltion comprisin~ micro-pulverized sodium ~oa~bonate, organopolyæiloxane carrier/emollient and ~ fluorohydrocarbon propellant in association with a container hauing a dimensionally controlled delivery s~stem, an odor control produc~ is realized which does not alter normal ~hysio-lo~ical processes, is er~ective over an extended ~erlod, is substantlally ~ree Or a chillin~ reel on contact and is ~urther substantlally rree o~ delivery problems such as val~e ¢logging, ~o~gin~ and cloudin~.

To achieve the product Or the fore~oin~ desirable properties a careful selection Or the carrier/emollient and propellant and the relative amounts of the sodium bi¢arbonate and carrler/emolllent are made. Further, lt iæ -critlcal and essentlal that the delivery be accomplished from a container with ~alve desi~n such that the dlp , :';:
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tube inner diameter and vapor tap orifice be within a certain dimensional range as hereina~ter specified.
Moreo~er, the sodium bicarbonate must be m~cropulverlzed to avoid possible clogging although by the comb1nation of selected carrler material and the use of a dimensionally controlled delivery system~ the chilling e~fect may be.avoided even when the particle size is outside the optimal range as hereinafter more fully described~
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The sodium bicarbonate to be employed in the deodorant composltions are o~ such particle size that there are no , s particles which will be greater than r4 microns. Prefer-ably, the particle slze is such that the part~cles will pass through a U, S. ~tandard ~t325 mesh ~cr~en~' i.e., they are 44 microns or less. Pre~erred compo~itlons contemplates use of sodium bicarbonate with substantially I all t~rom about 95 percent to 100 percent) of the particles , I Or particle size belo-~ about 45 microns in diameter and generally at least about 75 percent less than about 20 microns. Composltions may be o~ sodium bicarbonate in -whlch sub6tantially all o~ the bicarbonate are o~
particle size Q~ about 25 microns or less.

The organopolysiloxane carrier and emollien~ may be of any of (a) dialkyl or (b) phenyl and alkyl sub-.... ~ , .
stituted polysiloxane, cyclic or linear, which may be represented-by the ~ormu~a:
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J&J 850 R
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where R is lower alkyl and R is lower alkyl or phenyl and x is an inte~er. The suitable organopolysiloxanes are water-insoluble ~luid compounds with a ~iscosity ,~ in the range of ~rom about 40 to about 400 centistokes, preferabl~ in the range o~ from about 100 centistokes to about 350 centistokes. A particularly preferred or~anopolysiloxane liq polydimethylsiloxane. A suitable pol~dimethyl~iloxane is Dow Cornin~ Q2-1053 ~br~bow Corning '

3~ luid(~rademark products o~ Do~ Corn~ng Corpor~tion)~
Other su~table organosiloxane flu~ds whie~ ~a~ be employed include dimethylcyclic compounds sold under the , trademarks DOW Corning F-128 fluid and Dow Corning Ql-3597 f1uid, dimethyl linear compounds sold ,under the trademarks Dow Corning 225 fluid and Dow Corning 200 . . ~ .
~luid, and a phenylmethyl linear compound sold under the trademark Dow Corning 556 ~luld. . ætill other examples '' .. ..
of suitable silicone ~luids are the SF-96 series of dimethylpolysiloxanes, products o~ the General Electric ' ' .. ..
Compan~, Isoparaffinic hydrocarbons also may be employed.
~ , The foregoing CompoPents are formulated with a propellant ~or dry powder application. Pre~erred , -~
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propellants are fluorohydrocarbon blends although numerous fluorohydrocarbons and paraffinic hydrocarbons may be employed singly or a~ mixtures. Propellants that can be used alone include d~chlorodifluoromethane (Propellant 12), monochlorodifluoroethane (Propellant 142 and isobutane. Suitable propellant mixtures include:
chloropentafluoroethane (Propellant 115) and dichloro-tetrafluoroethane (Propellant 114) with ratios varying from about 10/90 to 70/30; propane ànd isobutane with ratios varying from about 10/90 to 50/50; dichlorodi-fluoromethane and n~butane with rat~os ~arylng ~rom about 10/90 ~o 90/10; dichlorodi~luorome~hane and ~obutane ~ , ~, w~th ratios varyin~ from about 10/90 to gO/10, and ~luoro-hydrocarbon mixtures such as dichlorodifluoromethane wi~h 1~ trichlorotriflouroethane or dichlorotetrafluoroethane or dichlorotetra~luoroethane or trichlormono~luoromethane (propellant 11) with ratios varying from about 99/1 to 4~/60 The preferred propellant mixture ~or use ln the present invention ls dichlorodi~luoromethane and d~chlorotetra~luoroethane in about a llO/60 ratio The fluorinated h~drocarbons sultable as propellants are avail~
B able commercially under trad4n~4~ such as Freons, U~ons~ Gen~trons, etc. The appropriate propellant .
~ may be identified by the tradename followed by a number corresponding to the foregoing propellant number.
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For a product havin~ desirable lon~ Iastin~ deodorant properties coupled with desirable delivery propertles; a .. :
composition is selected in which the amount Or sodium :.
- bicarbonate.is present within the broad ran~e Or about

4 to 12 percent, and the ratio Or sodium bicarbonate ~.
to organopolysiloxane is in the ran~e of about 9:1 to-l:9.
The ratio of sodium bicarbonate to organopolysiloxane is pre~erably about l:l. The preferred amount o~ the sodium bicarbonate in weight percent based on total wei~ht in~
cluding propellant is ~rom about 4.5 to about 8 percent. .
Optionally, a mlnor amount o~ fragrance not to exceed :-about 0.5 percent Or the total wei~ht may be added. Also an antlmicrobial substance such as zlno phe~o~ sulronate may be added in an amount not to exceed about 0,5 percent :
by weight o~ the total compo~ition. The remalnder ls propellant, In applicant's compositlon lt is not consid- . , ered necessary to add inert lngredients such as talc, . :
starch, etc. ...
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The chllling effect Or an aerosol spray ls dependent not only on the composition Or the propellant ~.
and the addltives in the composltlon but also on the spra,y rate and the spray pattern. An approprlate dellver~
system is necessary to achieve the deslred spray rate and ..
. spray pattern.
' ~ . ' ' ,25 The delivery system to be employed with the rore~
golng composition to achieve the desired warm deliver~ .
obJectives is attalned by choosing appropriate dimen~ions , -, .. .
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~or certain parts o~ an aerosol container of the sin~le compartment type which is provlded with an actuatin~ valve equlpped with a dip tube and a vapor tap. The valve housing or body is of the type havin~ a lower portion Or reduced diameter onto which the dip tube is fitted. This lower portion is the body opening from the bod~ to th~
dip tube; thus the inner diameter Or this :Lower portlon ls the body orifice diameter. In such a container, on actuation of the valve, the pressure Or the ~ro~ellant ~orces the contents Or the container throu~h the dip tube lnto the valve housing or bOdy and out throu~h the valve stem ori~ice, Durin~ the dispensin~ of the contents Or the container, the vapor tap serves as an air intake and inrluences the nature and rate Or rlOw~ It has been dlscovered that by ~;
employin~ a particular combinatlon Or dimenslons in the dlp tube, body openin~ and vapor ori~lce, a dry spray ma~
be achieved Or unexpected sortness and warmth Moreover, the resuits ma~y be accomplished without clo~in~ as well as without undesirable ro~gin~ and cloudin~.

By employin~ a valve in whlch the di~ kube inner diameter is within the range Or about 0.02 to 0.10 inch, prererably ab~ut 0.04 to 0.08 inçh in which the body opening ls Or comparable or proximate dimenslonal ran~e to the dip tube, and in whi¢h the vapor tap oririce dia-meter is in the range of from about Q.02 to about 0.04 - .

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' ' - ' J&J 850 ~0~38421!3 inch, desirable delivery properties may be achieved o~ a deodorant composition containing sodium bicarbonate of particle size less than about 44 microns, a carrier/
emollient and a propellant as previously described. ~y a body opening which is dimensionally proximate to the dip tube inner diameter is meant that it 1s about 3 to 5 percent larger in diameter than the dip tube inner dia-meter. In a preferred container, the aip tube inner diameter is about o.o6 inch, the body opening about 0.062 inch and the vapor tap orifice about 0.03 inch. The foregoing delivery system is partlcularly suitable in prov~ding a warm spray which may be attained without ~alve clogging, without excesslve fogging an~d ~ithout une~en distributlon, In preparing the deodorant compositions of the present invention, the finely divided sodium bicarbonate -is first placed in the ultimate spray container Fragrance .
and antimicrobials, if employed, are admixed with the organopolysiloxane compound and the composition filtered through a l to 10 micron fiber filter. Thereafter the organopolysiloxane composition is charged into the container, Followlng this, the container is filled with ; . . .
the desired amount of the previously described propellant or propellant mixture.
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The product o~ the composition and delivery system hereinbefore described when employed is an e*ficacious - , . , -.
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J&J 850 11)884Z13 deodorant, is dry on contact and moreover has a ~eel that is substantially free of the chilling characteristics of many aerosol deodorants and antiperspirants, The administration may be accomplished smoothly without ; 5 valve clogging and without excesslve fogging or cloudin~.
Moreover, since the solid component of the composition is undiluted with talc, starch or other inert solids, the delivered solid is entirely o~ the active ingredien~s, The chilling characteristic is measured by means o~ a chill index o~ the spray and i5 based on c~ culations o~ the ~nstantaneous cooling rate o~ a speci~ied thermistor probe at the normal human body temperature o~ ~.5C.
This instantaneous rate of cooling is dependent on both the maximum temperature drop of the probe and the rate -with which the equilibrium temperature o~ the probe isapproached. A detailed description o~ this effect and the measurement of same is ~ound in A, B, Kulkarni et al., Quantatative Evaluation o~ Chilling E~fect o~ Aerosol Spra~s, Journal of Pharmaceutical Sciences, 58:1~81-483, 1969.
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Brie~ly~ the chill index measurement is performed as follows: a 30 gauge copper-constantan thermocouple bead o~ approximately 1 mm, size is placed on a plexi-glass block that se~es as a substrate at room temperature.
The spray to be tested is positioned at a distance of l : .
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7.62 cm away from the thermocouple and the thermocouple ;~
output is connected to a strip-chart recorder. Coollng curves are obtained by continuously exposing the probe to the spray until the temperature reaches a minimum valve, Tm~ With a small sensor probe it can be assumed thQt the difference between the temperature of the spray at the probe and the temperature, Tm~ obtained from the cooling curve is negligible Furthermore~ it can be assumed that the instantaneous cooling rate of the probe at time t is proportional to the di~ference between the temperature o~ the probe Tt at time t and the temperature of the spray, Tm~ Thus:
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d ~ ~ k ( T~ - Tm ) ,:: .
Integrating this equatlon between the initial probe temperature To~ and the probe temperature Tt at time t, : -el~res:

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Thus, Tt-Tm decreases exponentially with time The . ;
constant k, representing the first-order coolin~ rate constant, can be calculated ~orm the plot of log (Tt-Tm) versus t obtained from the coolin~ curves. The cooling ~,. . .- . . .
hal~-life to 5~ is related to the first-order cooling ra~e constant by the relatlonship: -k=O . 693/to s ` ~

10884ZI~ J&J 850 .~,.. `':

The value of k for a giYen aerosol formulation is depend-ent on the probe, on the plexiglass block substrate, and the factors affecting the spray itself such as temperature, pressure, spray rate and spray pattern If ~hese factors -.
: 5 are kepk constant, values of k can be used to compare -:
the chilling effect of different aerosol formulat~ons on a relative basis.

. The mathematical.relationship between chill index, Ic, first-order cooling rate constant k of the probe, cooling half-life to 5 of the probe, the minimun temperature Tn is expressed as follows:
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Xc ~ k(Tn-Tm) - o~693 (Tn Tm)/t0-5 Thus~ the hi~her values for chill index, the greater is the chillin~ or cooling effect Instead of using a plexiglass block substrate, the probe can also be placed on the skln, such as on the ~ back of the palms of human volunteers in order to I qualLtatively verify differences between chill index of different aerosol sprays, However, when 90 doin~, it ii~
important to obiserve the remainder of the procedure as described above in order to avoid the introduction of variables.
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Broadly stated, the invention relates to a ~.
deodorant aerosol product comprising an aerosol deodorant :~
composition in an aerosol dispensing container providin~ a 'I~ ;
warm delivery wherein said deodorant composition consists essentially of finely divided sodium bicarbonate powder . .: I
:: -I . having a particle size no greater than 74 microns as active ....
deodorant ingredient in admixture with an organopolysiloxane ` -liquid, a suitable propellant, and an optional minor amount .~
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lO of fragrance, said sodium bicarbonake powder and said .~;
organopolysiloxane liquid being present in a ratio of from ~. :
' about 9:1 to about l:9 and said sodium bicarbonate constitut~
I ing from about 4 percent to about 12 percent by weight based I on the weight of the total composition; and ¦ wherein said container is of a single compartment I type provided with an actuating valve equipped with a dip ..
¦ tube having an inner diameter within the range of from about ~ ~ :
0.02 to about 0.10 inch, a body opening having a diameter of ~.. ~. .
from:about 3 to about 5 percent larger than the dip tubes 20 inner diameter and a vapor tap orifice in which the vapor .
: tap orieice diameter size is from about 0.02 to about 0.04 ` -inch.

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':' The following examples illustrate the invent~on but are not to be con~tructed a~ limiting:

Example I

An aerosol deodorant product is prepared containlng deodorant composition of Compo~iti.on I
Composition I
Wei~ht Component . 1 Percent Sodium Bicarbonate 5,o Poly5imethylsiloxane2 5~0 ~:
Fragrance 0,2 Propellant 12/Propellant 114 (40/60) 8~8 ~:

, Partlcle ~ize- 44 micron and below 0 Dow Corning Fluid Q2-1053, vlscosity 2.2-2.7 C
. ?5 c, CST
, 15 The preparation is carried out by lntimately admixlng the fragrance with polyd~methyl-siloxane ~or about one hour and thereafter filtering through a 1 micron flber filter.
The sodium bicarbonate and polydimethylsiloxane composition are separately added to an aerosol container of delivery ..
d~mension~ hereinarter specifled and there~fter charging the conta~ner with the fluorohydrocarbon propellant ~, blend. The container employed i~ of the single co~partment type with the following ~alve design dimensions: a dip ~ -tube inner diameter o~ o.o6 inch9 a body opening o~ 0,062 .. ~.
~n h and a vapor tap or1~ice of 0.030 lnch. .~

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' ' ' .' ~&J 850 ~0~84Z8 Spraying the deodorant product results ia a -desirable, effecti~e, sub~tantially warm deodorant spray wh~ch ~ dry on contact and has good delivery performance.

Example II ~
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A product ha~ing the composition cles ribed ln Example I is employed in a chill index Yalue determination and compared with a commercial deodorant product and a commercial ~ntiperspirant identiiied as Commercial Product A and B, respectively. The determlnation is carried ol~t employing the testing procedure and me~s~rement method o~
A, B. Kulkarni et al previously described. The results, ~ummari~ed in Table I show ~hilling e~Pect o~ ~he com-mercial deodorant to be greater than twice that o~ the product o~ the present invention and that of the antl-persplrant to be more than three time~ that of the product ; o~ the present lnvention.

Table I

Product Chill Index _ ~ ) Standard ~ ~ Error _ Compo8ition I 31,5 28,4 33.1 31.0 ~ ~ 1.4 Commerci~l Product A~ 84.5 76~9 72.6 77.3 ~ 2.9 Commercial-~ Product B** 95,2 99,6 94.o 96.3 ~ 1~7 : . ' ' `.. .:
*A deodorant product employing masking perfume as actl~e ingredlent.
~*An a~tiperspirant product.
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In a ~imllar operation3 the product is employed in a chill index measurement and com~ared w;th another com- -mercial deodorant product identified a~ Commercial Product C. The resultæ are seen in Table II, Table II

Product Chill Index (C ~ ) Standard 1 _ Mean _Error _ Compositlon I 38.3 39,3 39,9 39.1 0,47 Commercial Product C* 62.2 63,8 64,1 63,4 0,57 *A deodorant prod~lct employing sodium bicarbonate as active ingredient, Example III

A product i~ prepared o~ composition of Example I in the percent of components and packaged in a spray can of the same dimensio~s but employing ~odium bicarbonate which i8 substantially entirely of particle size le88 than about 45 microns and of which at least about 35 percen~ of part~cles of size are estimated to be 15 microns or below, When determined for spray rate by weighing the can, spraying for ~lve seconds and then reweighing the can, it is found to deliver 5.6 gram in 5 seconds. This amounts to a delivcry of about 0.26 gram of sodlum bicarbon~te in the 5-second interva~, , : ~:
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108~314~ &~ ~50 Example IV .

The efficacy of the deodo ant product having the same composltion as that of Example I ~Test Composition A) ~s determined by comparing it wlth a Check Composition containing no bicarbonate or any odor control agent, In the study the composltions are applied to sub~ects whose underarm odors are evaluated prior to application and at designa~ed interval~ after applicationO The contents Or the Check Composition are as follows: .

. Wei~ht Percent Polydimethylsiloxane 5.0 Fragrance 0,2 ,...... .............................................. ......... .~
Propellant 12/Propellant ~4 (40/60) 94,8 Both compositions are contained in Rnd adminlstered :~rom conta1ners having the same dimen ions.

The methods employed and the results obtained in the efflcacy determination are as follows: : :
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- Test subJects are selected after a prelimin~ry . 1, ..
supervised axillary wash and odor evaluatlon by two ~udges . .
selected for th~ir ability to di~erentiate relatively small difPerences in odor levles o~er ~ wide range of odor intensity. The odors are evaluated by asslgning a number ' from a scale representlng degree of ob~ectionable odor :
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and ranging from O tno detectable body odor) to 10 (a very strong and disagreeable body odor). The selected sub~ect~ are then evaluated for control (no application) odor, Thereafter, the sub~ects wash thelr axilla and apply test or cherh compositions to the washed axilla, The ~ axillary wash consists of washing the axil:La for 10 sec~nds ; with a 2% soap solution~ then thoroughly rinsing and drying~
The test and check composition are applied to di~ferent axillaR of the te~t sub~ects, The application of the ~es~
and check compositions consists of spraying the axilla for 2 sec~nds from a distance of approxlmately 6 inches, The samples are weighed before and after each applicatiDn and are ~ound to dellver about 2,3 grams o~ compos~tion, At 1, 8, and 24 hours a~ter application, odor e~luat~ons are again made and scored by asslgning a number in a manner slmilar to that described ~or the pretreatment evaluation, The percent reduction in odor scores deter-, mined by comparing the pretreatment and post treatmentvalues o~ teen test sub~ects are seen ~n Table III, Table III

Percent Odor Reduction Compositlon _ 1 Hour ~ Hours 2~ s Test Composition 91,~ 54,3 44,1 . .
Check Composltion 71.2 5.9 1,5 ,'' ` ' ' ; ' ',; .:

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J&J 850 iO884Z8 Example V
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A deodorant spray produc~ may be prepared in a manner described in Example I but employing sodium bicarbonate powder in which the powder is substantiall,y completely o~ par~icle size less than ~bout 25 microns. The product on delivery provides a warm, dry spray, Example VI

A deodorant spray product may be prepared o~ the ~ollowing composition:
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Com~onent . Weigh~ Percent .
Sodiun Bicarbonate 6,5 ~ ~,.
Polydlmethylslloxane 5.5 Fr~grance . 0,2 : Propellant 12/Propell~nt 114 (40/6a) 87.8 , . . ..
. . . ' . Example VII
Another deodorant spray product may be prepared ..
the ~ollowing ¢omposition: ~ .
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tei~ht Percent .. . . .
Sodium B~carbonate . 8.0 Polydimethylsiloxane 8.0 . ..
Fra~rance - 0,2 .:
. Prope.llant i2/Propellant 114 (5-~50) 83.8 .

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Claims (5)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A deodorant aerosol product comprising an aerosol deodorant composition in an aerosol dispensing container providing a warm delivery wherein said deodorant composition consists essenti-ally of finely divided sodium bicarbonate powder having a particle size no greater than 74 microns as active deodorant ingredient in admixture with an organopolysiloxane liquid, a suitable propellant, and an optional minor amount of fragrance, said sodium bicarbonate powder and said organopolysiloxane liquid being present in a ratio of from about 9:1 to about 1:9 and said sodium bicarbonate constituting from about 4 percent to about 12 percent by weight based on the weight of the total composition, and wherein said container is of a single compartment type provided with an actuating valve equipped with a dip tube having an inner diameter within the range of from about 0.02 to about 0.10 inch, a body opening having a diameter of from about 3 to about 5 percent larger than the dip tubes inner diameter and a vapor tap orifice in which the vapor tap orifice diameter size is from about 0.02 to about 0.04 inch.

2. A product according to claim 1 wherein the sodium bicarbonate constitutes about 4.5 percent to about 8 percent of the total composition.

3. A product according to claim 1 wherein the ratio of sodium bicarbonate to organopolysiloxane fluid is 1:1.

4. A product according to claim 1 wherein at least about 95 percent of the sodium bicarbonate has a particle size below about 45 microns in diameter.

5. A deodorant aerosol product comprising an aerosol deodorant composition in an aerosol dispensing container providing warm delivery, said deodorant composition consisting essentially of an intimate admixture of sodium bicarbonate powder, an organopolysiloxane liquid, and a propellant mixture of dichlorofluoromethane and dichlorotetrafluoroethane;
wherein in said composition the sodium bicarbonate powder is substantially completely of particle size less than about 45 microns in diameter and is present in an amount of from about 4.5 to 8 percent by weight of the total composition, and the sodium bicarbonate powder and the organopolysiloxane liquid are present in approximately 1:1 ratio;
wherein said container is of a single compartment type and is provided with a dip tube having an inner diameter within the range of from about 0.04 to about 0.08 inch, a body opening having a diameter of about 3 to about 5 percent larger than the dip tube inner diameter, a vapor tap orifice in which the vapor tap orifice diameter size is in the range of 0.025 to about 0.035 inch.