Note: Descriptions are shown in the official language in which they were submitted.
1 1S6186
APPLICATOR PACKAGE WITH CAPILLARY
APPLICATOR ELEMENT
This invention relates to an applicator package
for applying active antiperspirant material from
a liquid base. More particularly, it concerns packages
of this character in which the applicator element is
of the capillary type.
Applicator packages for applying liquids that
utilize a stationary applicator element have been known for
a long time. As early as 1926 U.S. Patent 1,586,044 was
granted disclosing a system of this character which employed
a felt pad as an applicator element in a package designed
to dispense liquid rouge. In 1955 a U.S. Patent was
granted to Lepkowski (2,726,416) for a liquid applicator
designed to deliver a cleaning liquid for eyeglasses which
also employed a dispenser element made of "firm" or "rock
hard" felt.
Applicators of the so-called "dab-o-matic" type
have also been suggested for use in delivering liquid
antiperspirant compositions. ~hese employ sponge-like
applicators which are unsatisfactory from several points
of view. In the first place, these packages are inclined
to run or flow too freely making the application of the
material messy. Secondly, during use, the pores of these
applicators tend to become clogged with skin debris that
coliects on it from underarm use. This impedes the flow
of the liquid antiperspirant through the applicator.
Moreover, the accumulation of skin debris in the applicator
element provides an unhygienic source of material that
may putrify producing unpleasant odors.
It has now been found that the above mentioned
disadvantages may be avoided by employing in the above-
1156186
- 2~
identified applicator package an applicator element comprising
a fibrous body made of continuous filamentary tows having
the filaments thereof oriented in a longitudinal direction,
or a horizontal direction or randomly oriented primarily in
S a longitudinal or horizontal direction hereinafter referred
to as a "capillary applicator". Materials of this character
are described in U.S. Patent 3,111,702 (See Column 1, paragraph
3). As pointed out in this patent, applicators prepared by
the process described therein comprise basically a body of
continuous filaments randomly oriented primarily in a longi-
tudinal direction. The fibers of this body are bonded to
adjacent fibers and the peripheral layer of fibers is stiffened
to form a peripheral shell or skin for the body. The process
produces a cellular body (see Column 6, line 1) which provides
an applicator which can hold liquid in its cellular structure
and from which the liquid may be dispensed by applying the
liquid loaded applicator to a surface with a little pressure.
To provide a capillary applicator of the above type
in which the fibers are oriented in a horizontal direction
or randomly oriented primarily in a horizontal direction,
the bonded body of filaments having the peripheral shell
or skin and prepared by the process described in U.S. Patent
3,111,702 is cut transversely and generally at about right
angles to the longitudinal orientation of the fi~ers to
form segments that have two cut surfaces and a body covered
with a shell or skin. When these segments are inserted
into the container, they are positioned so that the cut
surfaces abut opposite sides of the ~ertically extending
inner surface of the container. The remaining surfaces of
the capillary applicator including the surface used to apply
the material in the container to the subject is substantially
covered with the shell or skin.
- 1156186
- 2a -
In an effort to adapt a capillary applicator of the
aforementioned type to dispensing liquid antiperspirant
compositions, numerous problems were encountered. It was
found, for example, that when a capillary applicator made
of cellulose acetate fibers was used in dispensing certain
alcoholic, aqueous or aqueous-alcoholic compositions con-
taining certain aluminum antiperspirant salts after a short
period of time the capillary applicator disintegrates. It
was also found that if the element was too dense, it was
not possible to load the capillary applicator with sufficient
antiperspirant liquid to make a practical pac~age. Further-
~more, with certain densities of the capillary applicator
although it was possible to load the applicator with anti-
perspirant liquid it was-not possible to get the liquid
out of the applicator. Still, at certain densities of the
applicator, the liquid antiperspirant material could not be
retained within the capillary applicator and the liquid
material would leak out.
. .
1 156~816
-- 3
~ oreover, since it is necessary to deliver an effect-
ive dose of antiperspirant material with a reasonable number
of strokes to the underarm area, this presented a special
problem. It has been established that an effective anti-
perspirant dose of the antiperspirant salts is in the rangeof from 40 to 150 mgs. A reasonable number of underarm
application strokes for delivering this dose is about 10
strokes. In addition, it is important to be able to deliver
the antiperspirant material at a uniform rate. Applicators
with a variety of densities were not capable of either
delivering the necessary dosage of antiperspirant material
with a reasonable number of strokes or delivering it at a
uniform rate.
It has been found that all of the above stated
problems can be avoided if the capillary applicator is
made of a material that is stable with respect to the
antiperspirant material present in the container and that
the capillary applica~ has a density within the r~nge
of from 2 to 4 grams per cubic inch and preferably in the
range of ~rom 2.5 to 3 grams per cubic inch. - c
Leaking or running of the liquid antiperspirant
product is aYoided by the use of the capillary applicator
elements o~ this inYention. This is at least in part due
to the fact that the liquid product is completely taken up
by and held in the capillary applicator element and dis-
pensed therefrom without the need for a liquid re~ervoir
in the container. It is clear from this that although the
element is referred to as a capillary applicator, it serves
the dual function of an antiperspirant storage element and
applicator element.
1 156186
- 3a -
At the capillary applicator densities mentioned
above i.e. 2 to 4 grEms per cubic inch, and preferably,
2.5 to 3 grams per cubic inch, it is possible to deliver
an effective antiperspirant dose within a reasonable
number of strokes to the axilla of the subject and at a
uniform rate. It is accordingly possible to deposit
between about 40 mgs. to about 150 mgs. of active
antiperspirant material to the underarm of subjects
using up to a maximum of about 10 strokes when the
applicator package of the present invention is employed.
This is highly important in providing a package that
will be a practical means for effectively inhibiting
perspiration.
Since the acti~e antiperspirant is applied at
a uniform rate with the present applicator, the anti-
perspirant effect is readily duplicable. As soon as
the user }ea~ns the dose that is e~ecti~e ~or him
i.e. the number of strokes that be needs to apply for
an effective amount of the antiperspirant, he can
`duplicate this each time he needs to employ the applica-
tor.
As iAd~cated above in one aspect of the invention
the capillary applicator employed is one in which the
fibers are oriented in a horizontal direction or randomly
oriented primarily in a horizontal direction. This has
several distinct advantages. In the first place, this
takes advantage of the normal shell or skin formation
inherent in the manufacture of the bonded applicator
units. The cut ends of the application units formed in
1 156186
their manufacture are inclined to be rough and would be
irritating when applied to the skin. However, when the
bonded segment is inserted into the container positioned
so that the filaments are in a horizontal position or
randomly oriented primarily in a horizontal position
the natural skin or shell which is smooth as a result of
the process by which it is made covers that portion of the
applicator which will come in contact with the skin.
Secondly, when the capillary applicator used
herein is one in which the applicator is inserted into the
container so that the fibers are oriented in a longitudinal
direction or randomly oriented primarily in a longitudinal
direction, a cut end of the applicator is positioned to
serve as the applicator surface applied to the skin.
Since this was inclined to be rough, the practice is to
heat fuse this surface somewhat to remove the roughness.
However, when this is done, there is some sacrifice in
the uniformity of flowof product from the container.
Unexpectedly, when the capillary applicator is positioned
in the container so that the fibers are oriented in a
horizontal direction or randomly oriented primarily in a
horizontal direction and the normally produced skin or shell
covers the surface of the applicator that is to be applied
to the skin of the subject as described above, the uniformity
of flow is significantly improved.
1 156~86
- 4~
Alcoholic or aqueous carrier syst~ for the active
antiperspirant materi~l are the carriers o~-choice. ~owever,
this gives rise to $urther problems. Since the alcohol in
-these vehicles was voLatile, to prevent the loss of alcohol
or water and the consequent crystallization of
the active antiperspirant material, it is necessary to
provide an ade~uate sealing means. By the same token,
to take care of the situation where the vapor pressure
buildup of the alcohol becomes too high, means ~or
relieving this pressure must be provided for. To solve
these problems, the device descr~bed in more detail
below and in the accompanying drawings is provided in
which:
Fig. 1 is a perspective view of an applicator
package embodied in the present invention shown in
the closed position;
Fig. 2 is an exploded perspe~tive view of the
applicator package of Fig. 1 which has been inverted
and has been opened ~or use;
Fig. 3 is a vertical section taken along line 3-3
of Fig. l;
Fig. 4 is a cross section of Fig. 3 taken along
line 4-4;~
Fig. 5 is a cross-sectional view taken along
line 5-5 of Fig. 3;
vertical
Fig. 6 is an enlarged partial/cross-sectional view
o Fig. 1 showing the two hal~es of the device in closed
condition;
Fig. 7 is a view similar to that shown in Fig. 6 showing
the t~o halves of the device in separated condition; and
Fig. 8 is a view similar to that shown in Fig. 1 in
which the container is provided with a sealing tape.
1 156186
- 4a -
Fig. 9 is an enlarged partial cross-sectional
view similar to that shown in Fig. -6 of another modifica-
tion of this invention showing the two halves of the
device in closed condition.
Fig. 10 is an enlarged partial vertical cross-
sectional view of another modification of this invention;
this view being similar to that shown in Fig. 6 but showing
the opposite side of the device when seen in vertical
cross-section.
1156186
- 5 -
Referring to Fig. 1, the applicator package is showngenerally at 1 and comprises an upper barrel portion 3 and
a lower closure portion 5. Closure portion 5 is provided
with a base 7 which enables the package to stand by itself
in an inverted position. Capillary applicator 9 is shown in
Fig. 2 in its operating position and is held by barrel
portion 3 in a manner described in more detail below. In
the embodiment illustrated, this takes the form of a
rectangular parallelepiped in which the angular corners
are rounded of.
Barrel 3 is hollow and is provided with a plurality
of verticle venting ribs 11 that extend the full length of
its innex surface. As best seen in Fig. 4 in the modification
illustrated, four sets of vertical ribs are provided; each
of which project inwardly into the cavity of barrel 3. A
pair of horizontal bar members 13 are also provided which
are located about 2/3 the way down from the roo of barrel 3.
These are secured to and preferably made integral with the
internal surface of barrel 3 and project into the cavity of
barrel 3.
Horizontal bar members 13 serve as locking means
to maintain capillary applicator 9 within barrel 3. After
the liquid is introduced into barrel 3 and capillary
applicator 9 is inserted into it, the applicator takes
up essentially all the liquid and swells. As a consequence,
horizontal bars 13 become locked into the body of applicator
securing it into position.
Ribs 11 serve a number of functions. Their prime
function is as a venting-means. This may come into play
during the use of the applicator. As the antiperspirant
material is applied, voids are left in the applicator which
must be filled with air if the applicator is to continue to
deliver liquid. Part of this is supplied through the pores
of the applicator element which is designed with this in mind.
However, a significant amount of air also enters the inside
- 6 - 115618~
of barrel 3 through venting ribs 11.
In a somewhat analogous fashion, venting ribs 11 serve
as escape channels for excess pressure that may build up
- inside barrel 3 due to the vaporization of some of the low
boiling materials present in the composition. This will
serve to direct the pressure to the pressure relief system
described in more detail below.
Still a further function o~ venting ribs 11 is seen
in the fillin~ operation. In the filling, also described
in more detail below, the liquid antiperspirant composition
is first placed in barrel 3 and then capillary ~pplicator 9
is inserted into barrel 3. In this instance, venting ribs
serve as a conduit for excess antiperspirant liquid that
is displaced from barrel 3 when capillary applicator element
lS 9 is inserted.
Another function for venting ribs 11 has to do with
the fabrication of barrel 3. For the purpose of convenient
application, it is desired that the internal configuration
of barrel 3 be oval to accommodate an oval shaped capillary
applicator element 9, but at the same time, the outer
configuration of barrel 3 is to be rectangular in cross
section. This is made possible by venting ribs 11 which
reduces the bulk of material at the inside corners of b~rrel 3.
Near its lower outer margin a step 15 is cut into
the outer surface of barrel 3. This step extends around the
cixcumference of barrel 3 and provides a seat for O-ring 17.
These are best seen in the detailed drawing of Fig. 5
O-ring 17 is generally circular in cross section in its
uncompressed condition. When it is compressed by closure
5 as described in more detail below, this is deformed and
serves to seal the interior of the container from the
atmosphere.
1 156186
- 7
O-ring 17 may be made of any of a variety of
compressible materials. It has been found, however,
that the best results are obtained with O-ring fabricated
from Buna-N rubber.
About 1/2 way down vertical leg 19 o~ step 15
there is pro~ided a discontinuous bead element 21. In
the embodiment shown, bead 21 is di~ided into four
sections; two sections being disposed on the sides of
barrel 3 and one section each located on the front and
back surfaces of ~ertical leg 19 of barxel 3. Bead 21
, i3 formed so as to ha~e a vertical s~rface 23, an upper
angular surface 25 i~clined upwardly and inwardly and.
a lcwer angular sur~ace 27 inclined downwardly and i~wardly.
Bead 21 is designed with two functions in mind. The
first function is to engage a corresponding bead on
the closure 5 when the latter is snapped into position
and thereby ser~ing as a locking mechanism. The second
~unction is to provide a venting mecAanism which will be
described in more detail below.
.. . . .
1 1~6~8
Closure S is provided with an upwardly extending
skirt 29. Projecting inwardly of this skirt is a flexible
~echanical seal 31 which engages the lower margin of barrel
-3 when the parts are assembled. A discontinuous bead 33
similar to discontinuous bead 21 of barrel 3 is provided
in skirt 29. This has a vertical surface 35, an upper
angular sur~ace 37 inclined downwardly and inwardly and
a lower angular surface 39 inclined upwardly and inwardly.
In the case of bead 33, however, this is directed inwardly
toward the center of the ca~ity of closure 5.
ln use, a quantity of a liquid antiperspirant compo-
sition described in more detail below is charged into barrel
3. Capillary applicator 9 is then inserted into barrel 3 and
allowed to absorb all of the liquid. Closure 5 is then applied
to barrel 3 until the lower margin of barrel 3 engages mech-
anical seal 31 of the closure member 5. In this position,
bead 21 o~ barrel 3 has been snapped over bead 33 of the
closure 5 and the upper margi~ of closure 5 engages and
compresses O-ring 17. At the same time, mechanical seal
element 31 is engaged by the lower margin of leg lg and
bent downwardly (compare position of element 31 in Figs.
7 and 6) to form an auxillary mechanical seal. The applica-
tor package is now sealed fro~ the atmosphere. The relation-
ship of the internal parts in this condition of the package
is best seen in Fig. 6.
If an undue amount of pressure begins to build up
wi~hin the package, the upw~rd movement of barrel 3 com-
mences. A small clearance 41 is provided between surface
25 of bead 21 and surface 39 of bead 33 to permit the
movement of these p~rts with respect to each other. As pres-
sure builds up in the container, surface 25 rides upwardly
on the incline surface 39 which results in a spreadins of
the upper margin of closure 5 resulting in a reduction of
the compression on O-ring 17. This ser~es to release the
seal and permits the venting of the vapors. The relation-
ship of the parts in the venting position is best shown in
Fig. 7.
1 ~56~86
_ g~k_
When the pressure wi~hin the container is released,
barrel 3 automatically slides downwardly on surface 39
until the upper margin of skirt 29 of closure 5 engages
and compresses O-ring 17 to reseal the container. In this
condition, it again ass~mes the sealed position shown
in Fig. 6. The automatic return of barrel 3 from the
position shown in Fig. 7 to the position shown in Fig. 6
ater ~enting the pressure within the container is assured
by se~eral features of the present construction. In
the rirst place, closure 5 is made of a plastic that has
resilient and elas~o~eric properties. In the venting
position shown in Fig. 7, skirt 29 of closure 5 is flexed
outwardly. Because of its resiliency in this condition,
skirt 2~ is under a tension that i5 biased inwardly.
When the internal pressure of ~he container is released,
this force tends to ~orce barrel 3 to ride d~wnwardly on
slope 39 of bead 33.
Another feature of construction that assures the
automatic return of barrel 3 from its position in Fig. 7
to its position in Fig. 6 on the release of the pressure
in the container is the difference in the angular inclination
of surface 25 of bead 21 and surface 39 of bead 33. The
dierence i~ such that,whe~ barrel 3 mo~es upwardly in
res~onse ~o interna~ ~ressure in the container bead 21
enters into an interferen¢e en~age~en~ with bead 33.
The difference in the anSular inclination between surface
~5 and sur~ace 39 may v~ so~e~at. A very suitable
difference is abo~t 15. In the modification shown in the
drawings, the angle that surface 25 makes with the horizon-
tal is about 30; whereasj the angle that surface 39 makeswith the horizontal is 45.
1 156~8~
_ 9~_
Fig. 8 shows a modification of this invention
that employs a sealing tape 45. This is applied to cover
the joint formed when barrel 3 and closure 5 are assembled.
This is preferably provided with a starter tab 47 which may
be grabbed to remove the sealing tape 45 when the package
is about to be used. Sealing tape 45 will generally be
made of a moisture barrier pressure sensitive tape. One
such tape is a polyester tape marketed under the trade
name MYLAR.
Fig. 9 is an alternative construction embodied in the
present invention in which vertical leg l9' of barrel
element 3' is provided with a circumferential groove 18'
in which compressible O-ring 17' is disposed. The outer
surface of O-ring 17' extends outwardly from the outer
surface of vertical leg l9' so that it can form a
circumferential interference seal with the inner surface
of closure portion 5' near the upper end of the latter.
This interference sealing takes place even before closure
portion 5' and barrel portion 3' are mechanically locked
in the snap-lock position. This has the advantage in that
a seal is formed even i~ the consumer does not return the
closure to the full loc~ed position.
This modification of the invention also provides
for venting of the container when an undue vapor pressure
develops in it. If an alcohol pressure should develop
in the container, tkis would cause the closure member 5'
to expand outwardly away from O-ring 17'. This will permit
the vapors to bypass the compressible O-ring 17'. When the
pressure inside the container is equalized with the atmos-
~30 pheric pressure, the elastomeric properties of closure 5'
will return it to its normal position.
1156t8~
_ 9~
In this modification, closure member 5' is constructed
so that the cross-section thickness of its wall at its upper
portion is smaller than that of its lower portion. In
addition, flexible mechanical seal 31' is constructed so
S it tapers upwardly and inwardly from its origin in closure 5'
to its free margin. The angle that mechanical seal 31'
makes with the vertical may vary somewhat. In a typical
example, this will be about 60.
In still a further modification of this alternative
the lower lip of b æ rel 3' may be formed so that it forms
an acute angle with the vertical and thus nestles in the
angle formed by seal 31' and the vertical. The angular
dimension of these elements may also vary somewhat.
However, again in a typical case the angular margin of the
lower lip of barrel 3' will make an angle of about 45 with
respect to the vertical; whereas, the angle formed between
seal 31' and the vertical will be about 30.
The modification of this invention illustrated in
Fig. 9 is also formed so that the upper lip of closure 5'
is formed as a bevel 15'. This provides several ad~antages.
Thus, the visual gap between the closure and barrel when the
parts are assembled is reduced. Moreover, this assists the
consumer in assembling the cloeure and barrel and reduces
the danger of any sharp edges of plastic. In addition,
this also assists in getting a better seal engagement.
The snap-lock arrangement in the modification shown in
Fig. 9 is a little different from that shown in the other
modifications illustrated. In this instance, a rounded
outwardly extending bead 27' is provided on the outer wall
of leg l9' which engages a similarly rounded bead 28' that
1 15618
.~
-- gc --
extends inwardly of the inner surface of the wall of
closure 5'.
Fig. 10 illustrates another embodiment of this
invention which dispenses with the need of an O-ring
like ring 17 shown in Fig. 6. As in the other modifica-
tions illustrated, this modification comprises a closure
portion 5" and a barrel portion 3". Flexible mechanical
seal 31" is also provided which in structure and function
are similar to flexible mechanical seal 31 or 31'.
To provide a seal in this modification of the inven-
tion the wall 51 of closure portion 5" is tapered upwardly
and outwardly toward its ~ree margin 53 to form a tapered
section 55. A step is cut in the lower portion of tapered
section 55 to ~orm an undercut 57 which will engage a mating
undercut 59 in barrel 3" described in more detail below to
form a lock that holds the closure portion 5" and barrel
portion 3" together when these parts are assembled.
Wall 61 of barrel portion 3" is tapered downwardly
and inwardly toward its free margin 63. The latter takes
the form of a bevel which permits it to slide down into
the space 65 which is lateral to flexible seal member 31".
A step is cut in the upper portion of tapered wall 61 to
provide an undercut 59 which as indicated above forms a lock
with undercut 57.
To form a seal to the atmosphere, the barrel 3'' and
the closure 5" are made of different materials usually
plastic materials that have different degrees of flexibility.
In a preferred embodiment of this invention, barrel 3" is
made of rigid polypropylene whereas, closure 5~i is made of
flexible polyethylene (high density).
1 156~6
- 9d -
Barrel 3" and closure 5" are dimensioned so that
when they are assembled and pushed home as illustrated in
Fig. 10, tapered wall 55 is flexed outward. Because this
material is flexible, it is under a tension which is
biased inwardly. This forms a seal between the tapered
surfaces of walls 55 and 61.
This modification of the invention also permits the
venting of the container to the atmosphere when the
vapor pressure inside it gets too high. In this instance,
a small upward movement of the barrel 3" in response to the
increase in internal pressure will break the seal between
the tapered surfaces of walls 55 and 61 causing the
container to vent to the atmosphere.
In some instances, the exposed surface of applicator
9 as seen, for example, in Fig. 2 may be too rough when
applied to the axilla of the subjects. If this is the
case, this can be remedied by applying heat to the
surface of the applicator as, for example, by using a
hot platen. This will form a smooth skin on the surface
of the applicator which may serve to reduce any discomfort
which may be caused by the applicator surface.
1 1S~1~36
Still another feature of the present invention
is the fact that during storage in the upright positions
that these packages will be subject to in the home,
barrel 3 containing the capillary applicator 9 loaded
with the liquid antiperspirant composition will be in
an inver~ed position i.e. the capillary applicator 9
will be facing downwardly. In this way, the liquid con-
tained in the applicator gravitates toward the business
end of the applicator. In this fashio~, the applicator
is ready for use immediately to deliver the e~fective
antiperspirant dose. ~owever, the antiperspirant liquid
is prevented from leaking out of the applicator by the
capillary forces that the applicator exerts on the
liquid. Thus, the gravitational forces are balanced
against the capillary forces. When the loaded applicator
is applied to the underarm with a certain amount of
pressure, the liquid is deposited on the skin from the
relati~ely superficial areas of the applicator. The
liquid so removed from the applicator is replaced by
liquid contained in the more interior portions of the
applicator.
The filamentary material that is u~ed in fabri-
cating the applicator elements employed in the present
invention can vary somewhat. By way of example, nylon
mono-filaments, cellulose acetate, polypropylene, etc.
may be employed. However, the material of choice
is polypropylene since it offers several advantages.
This is inert to most all of the active antiperspirant
materials. Moreover, the rate of delivery seems most
unifoxm with a polypropylene applicator and delivering
the requisite dose of active antiperspirant material
1 156~8~i
with a reasonable number of strokes seems most readily
accomplished when the applicator is fabricated from
polypropylene filamentary material using the process
described in U.S. Patent 3,111,702 mentioned above.
In formulating the antiperspirant composition
of this invention, a variety of active antiperspirant
materials may be employed. By way of example, mention may
be made of aluminum chlorhydroxide and aluminum hydroxybromide,
aluminum chloride as well as the aluminum/zirconium/glycine
10 antiperspirant complexes disclosed in Patent No. 3,792,068
issued February 12, 1974 to Luedders et al.
The preferred aluminum compound for preparation of
~he Luedders et al complex is aluminum chlorhydroxide of
the formula A12(OH)5C12H2O. The preferred zirconium compound
for preparation of the Luedders et al complex is zirconyl
hydroxychloride having the foxmula ZrO(OH)C13H2O. The
preferred amlno ~cid for preparing the Luedders et al complex
is glycine of the formula CH2(NH2)COOH. Salts of such
amino acids can also be employed in such antiperspirant
complexes.
Other suitable actives for use in the present inven-
tion comprise mixtures of aluminum chloride with other
aluminum salts less acidic than aluminum chloride e.g.
aluminum hydroxychloride ~or aluminum chlorhydroxide)~
25 These are described in Canadian Patent 958,338 issued
November 26, 1974. However, the antiperspirant of choice
is aluminum sesquichlorohydrate.
The quantity of active antiperspirant material that
will be used will vary somewhat. For the most part, this
will constitute between about 10% to about 40% by
weight based on the total weight of the fluid composition
employed in preparing the applicator package.
1 ~5618~)
A large component of the fluid vehicle that will be
employed in the preferred antiperspirant compositions that
are employed in the present invention will be ethyl
alcohol. The quantity utilized, however, will depend on
the other components of the composition and particularly
the amount of water that may be contained in it. Usually,
this will constitute between about 40% to about 90%
by weight based on the total weight of the antiperspirant
composition with the preferred range being between about
50~ to about 65% by weight.
Water may also be used in significant amounts as
part of the fluid vehicle employed. When it is employed,
it will comprise between about 5% to about 80% by
weight of the total antiperspirant composition. In a
preferred aspect of this invention, the water will be
present in the range of from about 40% to about 70%
by weight.
In addition to the above components, the antiper-
spirant composition used herein may also contain
ingredients that are conventionally employed in alconol
or aqueous antiperspirant compositions. These include
neutralizing agents (e.g. glycine), volatile or non-volatile
emollients (e.g. cyclomethicone, isopropyl myristate),
surfactants (e.g. polyoxyethylene 2-isostearate [Aerosurf
66-E-2]), perfume, coloring matter, preservatives, etc.
The following Examples are given to further illustrate
the present invention. It is understood, however, that the
invention is not limited thereto.
An aqueous-alcoholic antiperspirant composition
having the following formula was prepared:
1 156~86
-13-
EXAMPLE 1
'Antiperspirant Composition
Aluminum sesquichlorohydrate 30%
Alcohol 53.29%
H2O 8~
Glycine 0.5%
Isopropyl myrista-te3.00~
Cyclomethicone F-222 1.5%
Polyoxyethylene 2-Isostearate
Ether (Aerosurf 66-E-2~3%
Perfume 0.30%
Color QS 1.00%
Using the procedure of Example 1 of U.S. Patent
3,095,343 and employing nylon mono-filament material,
the applicator element described above was prepared having
the following dimensions: thickness .898in.; width 1.696 in.;
height 2.622 in., weight 18.10 grams. About 47.8 grams
of the antiperspirant composition described above was intro-
duced into the body of the container described above
after which the applicator element was inserted. Because
of the capillary action of the applicator element, essentially
all of the solution introduced into the body of the con-
tainer was taken up in the interstices of the applicator
element.
EXAMPLE 2
The procedure and container as described in Example 1
is employed excepting that in place of the applicator element
described in that Example, a polypropylene applicator element
having a density of 2.88 gm/in3 is employed.
EXAMPLE 3
The procedure and container of Example 1 is employed
excepting that the applicator is made of polypropylene that
has a density of 2.66 gm/in3 and the composition in the
container is as follows:
~5
1 156~8~
- 14 -
% by Wt.
Aluminum chloride
50% solution 30.00
Mag~esium hydroxide 3.75
Glycine 0.50
Aluminum zirconium *
txichlorohydrate (AZ-4) 10.00
Water, deionized 49.40
Perfume 0 50
PPG-5 Ceteth 20 5.00
FD&C Blue #l
(0.1 Ag. sol.) 0.25
D&C Yellow ~10
(1.0 Aq. sol.) 0.60
~ppearance - clear solution
Color - light green
pH 3.32 I- 0.3
EXAMPLE 4
The procedure and container as described in Example 1
is employed excepting that in place of the applicator element
described therein a polypropylene applicator element is
employed haYing a density of 2.88 gm/in3 and the composition
in the container is as follows:
*
A14ZrO(OH)llC13
1 1 56 ~ 86
15 -
% by Wt.
Colloidal Magnesium
Aluminum Silicate, HV O.500
Water, deionized 46.720
~lyceryl monostearate,
non-self emulsifying 3.760
M(Lauroyl colamino formyl-
methyl) pyridinium chloride 0.160
Lauric acid, 95% 0.080
Polyoxy~thylene(23) lauryl
ether 2.500
Polyoxyethylene(4) lauryl
ether 1.000
Aluminum chlorhydroxide, 50% 44.000
Color FD&C Red ~4
(0.1~ aq. sol.) 0.575
Color FD&C Yellow #5
(0.1% aq. sol.) 0.385
Perfume 0.3.20
100.000
Appearance - smooth, opaque lotion
Color - pale, peach pink
pH 3.65-4.30
Viscosity - 24 hrs. (#2 spindle ~20 rpm 15 seconds) 100-1000 cps
Density at 25C 1.10-1.14 grams cc.
EX~MæLE 5
The procedure, container and composition d~scribed in
Example 4 are employed excepting that in place of the appli-
cator element described therein, a polypropylene applicator
element having a densi~y of 2.66 gm/in3 is used.
Barrel 3 and closure 5 may be fabricated in any of
a variety of materials. However, polypropylene plastic resin
1 156 1 86
6 --
ha~ been found to be particularly suitable for molding
these elements.
Although the invention has been described with
reference to speciic forms thereof, it will be understood
that many changes and modifications may be made without
departing from the spirit o~ this invention.
