U.S. patent application number 13/937975 was filed with the patent office on 2013-11-07 for personal care product and manufacture thereof.
The applicant listed for this patent is Colgate-Palmolive Company. Invention is credited to Richard Adams, Richard Blume, Ronald Edward Growe, Steven Misner, Nilsa Rodriguez.
Application Number | 20130295029 13/937975 |
Document ID | / |
Family ID | 43661813 |
Filed Date | 2013-11-07 |
United States Patent
Application |
20130295029 |
Kind Code |
A1 |
Misner; Steven ; et
al. |
November 7, 2013 |
Personal Care Product and Manufacture Thereof
Abstract
Disclosed is a package for a personal care composition, the
package comprising a container containing a personal care
composition, the container having a base comprising a base face for
standing the package on a planar surface, and a cap removably
connected to and covering a dispensing end of the container
opposite to the base. The cap has an end face which is inclined to
the base face, and the container and cap are shaped to permit the
package, independent of the amount of the personal care composition
contained within the container, selectively to be stood on the base
face in an upright orientation on the planar surface or on the end
face in an inverted orientation on the planar surface.
Inventors: |
Misner; Steven; (Verona,
NJ) ; Adams; Richard; (Monmouth Junction, NJ)
; Blume; Richard; (Budd Lake, NJ) ; Rodriguez;
Nilsa; (Perth Amboy, NJ) ; Growe; Ronald Edward;
(Flanders, NJ) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Colgate-Palmolive Company |
New York |
NY |
US |
|
|
Family ID: |
43661813 |
Appl. No.: |
13/937975 |
Filed: |
July 9, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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12863646 |
Jul 20, 2010 |
8529919 |
|
|
PCT/US2010/041009 |
Jul 6, 2010 |
|
|
|
13937975 |
|
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Current U.S.
Class: |
424/65 |
Current CPC
Class: |
A61K 8/922 20130101;
A61Q 15/00 20130101; A61K 8/342 20130101; A61K 8/86 20130101; A61K
8/0229 20130101; A45D 40/16 20130101; A61K 2800/87 20130101 |
Class at
Publication: |
424/65 |
International
Class: |
A61K 8/02 20060101
A61K008/02; A61Q 15/00 20060101 A61Q015/00 |
Claims
1. A personal care product, the product comprising a container
containing a solid body of a topical personal care composition, the
personal care composition having at least two components having
differing visual characteristics, the components being mixed to
form a random diffuse pattern, first and second components of the
at least two components comprising major and minor proportions by
volume of the solid body, the first component having a lower
melting temperature than the melting temperature of the second
component.
2. The product according to claim 1, wherein the melting
temperature of the first component is at least 23.degree. C. lower
than the melting temperature of the second component.
3. The product according to claim 2, wherein the melting
temperature of the first component is 23 to 28.degree. C. lower
than the melting temperature of the second component.
4. The product according to claim 1, wherein the personal care
composition is an antiperspirant composition and/or a deodorant
composition.
5. The product of claim 4, wherein the personal care composition is
a solid stick or soft solid.
6. The product of claim 4, wherein the personal care composition
comprises an antiperspirant active that is present in an amount of
5 to 25% by weight of the composition.
7. The product of claim 6, wherein each of the at least two
components of the personal care composition comprises the
antiperspirant active.
8. The product of claim 4, wherein the personal care composition
comprises a deodorant active that is present in an amount of
greater than 0 to up to 1% by weight of the composition.
9. The product of claim 8, wherein each of the at least two
components of the personal care composition comprises the deodorant
active.
10. The product according to claim 4, wherein the first and second
components respectively include different first and second gellant
compositions to provide different respective melting temperatures
of the first and second components of the personal care
composition.
11. The product according to claim 10, wherein the first gellant
composition comprises at least one soybean oil having an iodine
value of greater than 0 to 20 and at least one fatty alcohol and
the second gellant composition comprises at least one soybean oil
having an iodine value of greater than 0 to 20 and at least one
hydrocarbon of the formula C.sub.nH.sub.2n+2, wherein n is 20 to
100, and the hydrocarbon is at least 90% linear.
12. The product of claim 11, wherein the iodine value is 1 to
5.
13. The product of claim 11, wherein the soybean oil is present in
an amount up to about 20% by weight of the respective component of
the at least two components.
14. The product of claim 13, wherein the soybean oil is present in
an amount up to about 10% by weight of the respective component of
the at least two components.
15. The product of claim 14, wherein the soybean oil is present in
an amount of 3 to 7% by weight of the respective component of the
at least two components.
16. The product of claim 11, wherein the at least one fatty alcohol
is present in the first component in an amount of 5 to 25% by
weight of the first component.
17. The product of claim 16, wherein the fatty alcohol comprises
stearyl alcohol.
18. The product of claim 1, wherein the at least one hydrocarbon is
present in the second component in an amount of 5 to 25% by weight
of the second component.
19. The product of claim 18, wherein the at least one hydrocarbon
comprises polyethylene.
20. The product of claim 1, wherein the personal care composition
further comprises silicone which is present in each of the at least
two components in an amount of 5 to 70% by weight of the respective
component.
21. The product of claim 20, wherein the silicone comprises
cyclomethicone.
22. The product of claim 21, wherein the personal care composition
further comprises an emollient chosen from PPG-14 butyl ether,
C12-15 alkyl benzoate, phenyl trimethicone, PPG-3 myristyl ether,
myristyl myristate, and combinations thereof.
23. The product according to claim 1, wherein the at least two
components have different colors.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a divisional application of U.S. Ser.
No. 12/863,646, with a 371 National Stage Entry on 20 Jun. 2010,
which is a national stage entry of International Application No.
PCT/US2010/041009, filed on 6 Jul. 2010, all of which are
incorporated herein by reference.
FIELD
[0002] The present invention relates to a personal care product
including a personal care composition, for example an
antiperspirant composition or a deodorant composition, in the form
of a solid composition, typically a stick. The present invention
also relates to the manufacture of such a personal care
product.
BACKGROUND
[0003] There are various techniques to provide a unique appearance
to a packaged product. Many techniques are directed to the use of
colored containers and attractive labeling. Another technique is to
use the product to additionally provide part of the overall unique
appearance of the product.
[0004] It is known to provide personal care compositions having a
random or non-random patterned appearance. Some of these
compositions are an antiperspirant composition and/or a deodorant
composition in the form of a stick.
[0005] Nevertheless, there is a need in the art for a personal care
composition, for example an antiperspirant composition and/or a
deodorant composition, which has a distinctive aesthetic appearance
as compared to known products.
[0006] There is also a need in the art for a package for a personal
care composition, for example an antiperspirant composition and/or
a deodorant composition, that has a random diffuse pattern yet can
be reliably and repeatably manufactured in large commercial
volumes.
[0007] There is furthermore a need in the art for a product
comprising an antiperspirant composition and/or a deodorant
composition, which is in stick form and exhibits improved aesthetic
appeal.
BRIEF SUMMARY
[0008] An aim of this invention is to provide a package for a
personal care composition, for example an antiperspirant
composition or a deodorant composition, which can at least
partially meet at least one of the needs identified above.
[0009] Another aim of this invention is to provide a method for
producing such a personal care composition, for example an
antiperspirant composition or a deodorant composition, which can at
least partially meet at least one of the needs identified
above.
[0010] The present invention accordingly provides personal care
product, the product comprising a container containing a solid body
of a topical personal care composition, the personal care
composition having at least two components having differing visual
characteristics, the components being mixed to form a random
diffuse pattern, first and second components of the at least two
components comprising major and minor proportions by volume of the
solid body, the first component having a lower melting temperature
than the melting temperature of the second component.
[0011] The melting temperature of the first component may
optionally be at least 23.degree. C. lower than the melting
temperature of the second component, for example 23 to 28.degree.
C. lower than the melting temperature of the second component.
[0012] Typically, the personal care composition is an
antiperspirant composition and/or a deodorant composition.
[0013] The personal care composition may be a solid stick or soft
solid.
[0014] The personal care composition may comprise an antiperspirant
active that is present in an amount of 5 to 25% by weight of the
composition.
[0015] Optionally, each of the at least two components of the
personal care composition comprises the antiperspirant active.
[0016] The personal care composition may comprise a deodorant
active that is present in an amount of greater than 0 to up to 1%
by weight of the composition.
[0017] Optionally, each of the at least two components of the
personal care composition comprises the deodorant active.
[0018] The first and second components may respectively include
different first and second gellant compositions to provide
different respective melting temperatures of the first and second
components of the personal care composition.
[0019] Optionally, the first gellant composition comprises at least
one soybean oil having an iodine value of greater than 0 to 20 and
at least one fatty alcohol and the second gellant composition
comprises at least one soybean oil having an iodine value of
greater than 0 to 20 and at least one hydrocarbon of the formula
C.sub.nH.sub.2n+2, wherein n is 20 to 100, and the hydrocarbon is
at least 90% linear. Typically, the iodine value is 1 to 5.
[0020] The soybean oil may be present in an amount up to about 20%
by weight of the respective component of the at least two
components, typically in an amount up to 10% by weight of the
respective component of the at least two components, more typically
in an amount of 3 to 7% by weight of the respective component of
the at least two components.
[0021] The at least one fatty alcohol may be present in the first
component in an amount of 5 to 25% by weight of the first
component. Typically, the fatty alcohol comprises stearyl
alcohol.
[0022] The at least one hydrocarbon may be present in the second
component in an amount of 5 to 25% by weight of the second
component. Typically, the at least one hydrocarbon comprises
polyethylene.
[0023] Optionally, the personal care composition further comprises
silicone which is present in each of the at least two components in
an amount of 5 to 70% by weight of the respective component.
Typically, the silicone comprises cyclomethicone.
[0024] Optionally, the personal care composition further comprises
an emollient chosen from PPG-14 butyl ether, C12-15 alkyl benzoate,
phenyl trimethicone, PPG-3 myristyl ether, myristyl myristate, and
combinations thereof.
[0025] Typically, the at least two components have different
colors.
[0026] The present invention further provides a method of forming
in a container a random diffuse pattern mixture of at least two
components of a solid body of a topical personal care composition,
the at least two components having differing visual
characteristics, the method comprising the steps of: [0027] (a)
providing a container on a container support capable of rotating
the container; [0028] (b) feeding a first component of the at least
two components into the container, the first component being molten
and at a first temperature above a melting temperature of the first
component; [0029] (c) at least after commencement of step (b),
feeding a second component of the at least two components into the
container, the second component being molten and at a second
temperature above a melting temperature of the second component,
the second temperature being higher than the first temperature and
the melting temperature of the second component being higher than
the melting temperature of the first component; [0030] (d)
concurrently rotating the container on the container support in at
least a first rotational direction during at least a part of
feeding step (c) to form a random diffuse pattern mixture of the
first and second components; and [0031] (e) cooling the first and
second components to form a solid body having the random diffuse
pattern mixture, the second component commencing solidification
thereof during the cooling step prior to solidification of the
first component.
[0032] Optionally, the melting temperature of the first component
is at least 47.degree. C., typically 47 to 53.degree. C., lower
than the melting temperature of the second component.
[0033] Optionally, the second temperature is at least 70.degree.
C., typically 70 to 76.degree. C., higher than the first
temperature.
[0034] Typically, the first temperature is 47 to 53.degree. C. and
the second temperature is 70 to 76.degree. C. For example, the
first temperature may be from 62 to 69.degree. C. and the second
temperature may be from 79 to 86.degree. C.
[0035] Optionally, the second component terminates solidification
thereof during the cooling step prior to solidification of the
first component.
[0036] Optionally, the first and second components respectively
include different first and second gellant compositions to provide
different respective melting temperatures of the first and second
components of the personal care composition.
[0037] Typically, the feeding of the second component in step (c)
is commenced after termination of the feeding of the first
component in step (b).
[0038] Optionally, the container is rotated on the container
support additionally during at least a part of feeding step (c).
Optionally, the container is rotated on the container support after
the termination of both feeding step (b) and feeding step (c).
[0039] Optionally, the container is rotated on the container
support additionally during at least a part of cooling step
(e).
[0040] The container is typically rotated on the container support
in an oscillating manner in the first rotational direction and in
an opposite second rotational direction. For example, the container
is rotated at least 90 degrees in a first direction and at least 90
degrees in a second direction. Typically, the container is rotated
up to about 360 degrees in a first direction and up to about 360
degrees in a second direction. The container may be rotated up to
about 270 degrees in the first direction and up to about 270
degrees in the second direction.
[0041] Optionally, the container support maintains the container at
an angle of up to about 20 degrees to a vertical orientation.
[0042] Optionally, the container is subject to a vibration during
the feeding of at least the second component to the container.
[0043] The first and second components may be fed into the
container from a nozzle having two inputs and two outputs, one
input and output pair for each respective component.
[0044] In one aspect, the present processes can produce random
diffuse patterns of personal care composition in containers. By
random diffuse pattern is meant an irregular pattern that has a
discernable artistic yet non-geometric pattern, but where the
pattern varies in dimensions and the color varies in color density
to provide a color gradation throughout the personal care
composition. In one embodiment there may be strongly differentiated
regions and/or lines of different color, for example a darker color
composition dispersed randomly and diffusely in lighter color
matrix. The results are unique and very artistic patterns.
[0045] The solid personal care composition in the container may
have a marbleized appearance or a swirl pattern. When the container
is transparent or translucent, the pattern is continuously visible.
When the container is opaque, the pattern is visible when the
product is used, for example when a working surface of the topical
personal care composition is revealed to the user, typically when
the upper surface of a stick is exposed for topical application to
the skin.
BRIEF DESCRIPTION OF THE DRAWINGS
[0046] FIG. 1 schematically illustrates a front view of a personal
care product including a personal care composition having a random
diffuse pattern in accordance with an embodiment of the present
invention.
[0047] FIG. 2 is a schematic elevation view of a layout diagram of
a process of filling a container according to a method of another
embodiment of the present invention.
[0048] FIG. 3 is a schematic elevation view of a layout diagram of
a process of filling a container according to a method of a further
embodiment of the present invention in which the support for the
container is tilted at an angle to the filling nozzle.
DETAILED DESCRIPTION
[0049] It should be understood that the detailed description and
specific examples, while indicating embodiments of the invention,
are intended for purposes of illustration only and are not intended
to limit the scope of the invention.
[0050] The citation of references herein does not constitute an
admission that those references are prior art or have any relevance
to the patentability of the invention disclosed herein. Any
discussion of the content of references cited in the Background is
intended merely to provide a general summary of assertions made by
the authors of the references, and does not constitute an admission
as to the accuracy of the content of such references. Each and
every reference cited herein is hereby incorporated by reference in
its entirety.
[0051] The detailed description, while indicating embodiments of
the invention, is intended for purposes of illustration only and is
not intended to limit the scope of the invention. Moreover,
recitation of multiple embodiments having stated features is not
intended to exclude other embodiments having additional features,
or other embodiments incorporating different combinations the
stated of features.
[0052] As used herein, the words "preferred" and "preferably" refer
to embodiments of the invention that afford certain benefits, under
certain circumstances. However, other embodiments may also be
preferred, under the same or other circumstances. Furthermore, the
recitation of one or more preferred embodiments does not imply that
other embodiments are not useful, and is not intended to exclude
other embodiments from the scope of the invention.
[0053] As used herein, the word "include," and its variants, is
intended to be non-limiting, such that recitation of items in a
list is not to the exclusion of other like items that may also be
useful in the dispensers of this invention.
[0054] The invention will now be described in more detail in its
preferred embodiments with reference to the drawings. The described
products and processes may be modified in minor details without
departing from the concept of the present invention. As used
throughout this description, ranges are used as a shorthand for
describing each and every value that is within the range. Any value
within the range can be selected as the terminus of the range.
[0055] FIG. 1 schematically illustrates a front view of a personal
care product including a personal care composition having a random
diffuse pattern in accordance with an embodiment of the present
invention.
[0056] The personal care product, designated generally as 102,
comprises a container 104 containing a solid body 106 of a topical
personal care composition.
[0057] The personal care composition is an antiperspirant
composition and/or a deodorant composition, and may comprise an
antiperspirant active that is present in an amount of 10 to 25% by
weight of the composition and/or a deodorant active which is
present in an amount of greater than 0 to up to 1% by weight of the
composition.
[0058] The container 104 comprises a conventional housing 108
having a cavity 110 for containing a solid body 106 formed as a
hard stick or soft solid. A mechanism 112 for advancing or
retracting the solid body 106 relative to the housing 108 is
provided at the base 114 of the housing 108. A removable cap 116
may be fitted to the upper end 118 of the housing 108 to cover the
exposed end 120 of the solid body 106. In FIG. 1, the solid body
106 has been advanced partly from out of the cavity 10 to
illustrate the visual appearance of the solid body 106.
[0059] The personal care composition has at least two components
122, 124, called first and second components, having differing
visual characteristics. In alternative embodiments, greater than
two visually distinct components may be provided. The at least two
components may each comprise the antiperspirant active and/or the
deodorant active. The two components differ in color.
[0060] The first and second components 122, 124 are mixed to form a
random diffuse pattern. The first and second components 122, 124
comprise major and minor proportions by volume of the solid body
106. Typically, the first component 122 comprises 70 to 95 wt %,
typically 85 wt % and the second component 124 comprises 5 to 30 wt
%, typically 15 wt %, of the solid body 106. Most typically, the
second component 124 comprises the darker color composition
dispersed randomly and diffusely in the lighter color matrix
comprised of the first component 122.
[0061] The first component 122 has a lower melting temperature than
the melting temperature of the second component 124. Typically, the
melting temperature of the first component 122 is at least
28.degree. C. lower than the melting temperature of the second
component 124. For example, the melting temperature of the first
component 122 is 47 to 53.degree. C. lower than the melting
temperature of the second component 124.
[0062] Having the components melt at different temperatures makes
it easier to form striations or marbleized patterns in the
composition. The higher melting point material solidifies first to
start forming a solid that is mixed within the liquid lower melting
point component. In certain embodiments, an inline mixer is not
needed to mix the components.
[0063] In this embodiment, the different melting temperatures of
the first and second components 122, 124 is achieved by providing
that the first and second components 122, 124 respectively include
different first and second gellant compositions. For example, the
first gellant composition comprises at least one soybean oil having
an iodine value of greater than 0 to 20 and at least one fatty
alcohol and the second gellant composition comprises at least one
soybean oil having an iodine value of greater than 0 to 20 and at
least one hydrocarbon of the formula C.sub.nH.sub.2n+2, wherein n
is 20 to 100, and the hydrocarbon is at least 90% linear.
[0064] The soybean oil in the first and second components 122, 124
may be the same soybean oil. Typically, the iodine value is 1 to 5.
The soybean oil may be present in an amount up to about 20% by
weight, more typically up to about 10% by weight, for example 3 to
7% by weight, of the respective component of the at least two
components.
[0065] The at least one fatty alcohol may be present in the first
component in an amount of 5 to 25% by weight of the first
component. The fatty alcohol typically comprises stearyl
alcohol.
[0066] The at least one hydrocarbon may be present in the second
component in an amount of 5 to 25% by weight of the second
component. The at least one hydrocarbon may comprise
polyethylene.
[0067] The personal care composition typically further comprises
silicone which is present in each of the at least two components in
an amount of 5 to 70% by weight of the respective component. The
silicone may comprise cyclomethicone.
[0068] The personal care composition may further comprise an
emollient chosen from PPG-14 butyl ether, C12-15 alkyl benzoate,
phenyl trimethicone, PPG-3 myristyl ether, myristyl myristate, and
combinations thereof.
[0069] The composition is a solid stick or soft solid when at
ambient room temperature of about 25.degree. C. The stick form is
an example of a solid form, and the soft solid is a thickened form
that may or may not be solid. The stick form can be distinguished
from a soft solid in that, in a stick, the formulated product can
retain its shape for extended time periods outside the package, the
product not losing its shape significantly (allowing for some
shrinkage due to solvent evaporation). Adjustment of amounts of
gelling or thickening agents can be used in order to form a soft
solid or stick.
[0070] Soft solids can be suitably packaged in containers that have
the appearance of a stick, but which dispense through apertures
(for example, slots or pores) on the top surface of the package.
The soft solid products have also been called soft sticks or
"smooth-ons", and hereinafter are generically called "soft solids".
Reference is made to U.S. Pat. No. 5,102,656, U.S. Pat. No.
5,069,897, and U.S. Pat. No. 4,937,069, each of which discloses
such soft solids, including physical characteristics thereof such
as viscosity and hardness. The contents of each of these three U.S.
patents are incorporated herein by reference to the extent that
they do not conflict with the disclosure herein.
Gelling Agents
[0071] Gelling agents used in the topical personal care
compositions used in the present invention comprise hydrogenated
soybean oil as a first gellant and a second gellant comprising a
fatty alcohol for the first component 122 or a hydrocarbon of the
formula C.sub.nH.sub.2n+2, wherein n is 20 to 100, and the
hydrocarbon is at least 90% linear for the second component
124.
[0072] The hydrogenated soybean oil is used as a co-gellant along
with the selected second gellant to provide a solid stick or soft
solid antiperspirant. The hydrogenated soybean oil is almost, but
not fully hydrogenated. The amount of hydrogenation is measured by
the iodine value. The iodine value can be measured by ASTM D5554-95
(2006). The iodine value of the hydrogenated soybean oil used
herein is greater than 0 to 20. In one embodiment, the iodine value
is 1 to 5. It has been found that this level of hydrogenation
provides the desired structure to the antiperspirant and provides a
softer and creamier application aesthetics.
[0073] The hydrogenated soybean oil is present in an amount up to
about 20% by weight of the composition. In another embodiment, the
amount is up to about 10% by weight. In one embodiment, the amount
is 3 to 7% by weight. In another embodiment, the amount is 4 to 6%
by weight.
[0074] The hydrogenated soybean oil can provide increased fragrance
longevity when used to replace hydrogenated castor oil.
[0075] The fatty alcohol can be any fatty alcohol. In one
embodiment, the fatty alcohol is stearyl alcohol.
[0076] The hydrocarbon is a hydrocarbon of the formula
C.sub.nH.sub.2n+2, wherein n is 20-100, and the hydrocarbon is at
least 90% linear. In one embodiment, the hydrocarbon is a paraffin.
In another embodiment, the hydrocarbon is polyethylene. An example
of a polyethylene can be found in U.S. Pat. No. 6,503,491, which is
incorporated herein by reference only for its disclosure of the
polyethylene. In another embodiment, the polyethylene has a weight
average molecular weight in of 300 to 3000 and a melting point of
50 to 129.degree. C.
[0077] In one embodiment, the second gellant, comprising the fatty
alcohol or the hydrocarbon as discussed above, is present in the
composition in an amount of 5 to 25% by weight of the composition.
In another embodiment, the amount is 10 to 20% by weight.
[0078] The formulations of the invention may further comprise
additional gelling agents, which include, but are not limited to,
waxes, esters of fatty acid and fatty alcohol, triglycerides, or
other cosmetically acceptable materials, which are solid or semi
solid at room temperature and provide a consistency suitable for
application to the skin.
[0079] When using the hydrogenated soybean oil as a co-gellant with
the fatty alcohol gellant, the composition has increased fragrance
retention as compared to known compositions containing hydrogenated
castor oil.
Volatile Silicone
[0080] Compositions according to the present invention may include
a volatile silicone. In one embodiment, the volatile silicone is a
volatile cyclic polydimethylsiloxane (cyclomethicone), e.g.,
cyclopentasiloxane. By volatile material it is meant that the
material has a measurable vapor pressure at ambient temperature.
Preferably, the volatile cyclic polydimethylsiloxane is
cyclomethicone. Various types of cyclomethicones may be used.
Illustratively, and not by way of limitation, the volatile
silicones are one or more members selected from cyclic
polydimethylsiloxanes such as those represented by Formula I:
##STR00001##
where n is an integer with a value of 3-7, particularly 5-6.
Illustrative examples of suitable cyclomethicones are DC-345 and
DC-245, manufactured by Dow Corning Corporation, Midland, Mich.
These types include a tetramer (octylmethylcyclotetrasiloxane) and
a pentamer (decamethylcyclopentasiloxane). In one embodiment, the
amount of volatile silicone in the composition is 5 to 70% by
weight of the composition. In another embodiment, the amount is 25
to 45% by weight.
Antiperspirant Active Materials
[0081] When the composition includes an antiperspirant active, any
of the known antiperspirant active materials can be utilized in the
composition. Antiperspirant actives include, but are not limited
to, aluminum chlorhydrate, aluminum chloride, aluminum
sesquichlorohydrate, aluminum-zirconium hydroxychlorides, complexes
or adducts of the above-mentioned active ingredients with glycol,
such as propylene glycol (for example, "Rehydrol" II from Reheis
Chemical Co.), and combinations thereof. Known aluminum-zirconium
salts in combination with neutral amino acids, such as glycine
(e.g., aluminum-zirconium tetrachlorohydrex Gly) can also be used.
Generally, any of the Category I active antiperspirant ingredients,
listed in the Food and Drug Administration's Monograph on
Antiperspirant Drug Products for overall-the-counter human use
(Oct. 10, 1973) can be used.
[0082] In other embodiments, the antiperspirant active is an
aluminum salt and/or an aluminum-zirconium salt, such as those
described above, that are further stabilized by betaine and a
calcium salt. More information about betaine and calcium salt
stabilized antiperspirant salts can be found in U.S. Patent
Application Publication No. 2006/0204463 to Tang et al., which is
incorporated herein by reference only for the disclosure of the
antiperspirant actives.
[0083] In other embodiments, the antiperspirant active, such as
those described above, is selected to have a low metal to chloride
ratio. Examples of these antiperspirant actives can be found in
U.S. Pat. No. 6,375,937 to Chopra et al. and in U.S. Patent
Application Publication No. 2004/0109833 to Tang et al., which are
incorporated herein by reference only for their disclosure of the
antiperspirant active.
[0084] In other embodiments, the type of salt of interest, an
aluminum zirconium tetrasalt or octasalt free of glycine are used
wherein aluminum zirconium salt is stabilized by Betaine and has a
metal to chloride ratio of 0.9:1 to 1.3:1 (and in other embodiments
of 0.9:1 to 1.2:1 or 0.9:1 to 1.1:1). For the tetrasalt, the Al/Zr
atomic ratio can be 3.2:1 to 4.1:1.0 and the Betaine:zirconium mole
ratio can be 0.2:1 to 3.0:1 (or in other embodiments of 0.4:1 to
1.5:1). Another salt that can be used is an aluminum chloride salt
buffered by Betaine, wherein the salt has a metal to chloride ratio
of 0.9:1 to 1.3:1 (and in other embodiments of 0.9:1 to 1.2:1 or
0.9:1 to 1.1:1). For the octasalt the Al/Zr atomic ratio is 6.2:1
to 10.0:1 and the Betaine:Zr mole ratio is 0.2:1 to 3.0:1 (or in
other embodiments of 0.4:1 to 1.5:1). In one embodiment, in the
case of a salt that contains zirconium, the Betaine is incorporated
during the synthesis of the salt so as to maximize the stabilizing
effect this ingredient has (especially on the zirconium species).
Alternatively, it can be post added to a glycine-free salt along
with additional active phase ingredients to form a Betaine
stabilized active.
[0085] Examples of commercially available glycine-free low M:Cl
ratio tetrasalts and octasalts include, but are not limited to,
REZAL.TM. AZP 955 CPG and REZAL.TM. AZP 885 respectively (both from
Reheis Chemical Company, Berkeley Heights, N.J.). A more detailed
description of making such commercially available salts can be
found for example, in U.S. Pat. Nos. 7,074,394 and 6,960,338.
Further examples of making these types of salt complexes are
described in U.S. Patent Application Publication No. 2004/0198998
and U.S. Pat. No. 7,105,691.
[0086] In addition to the anti-irritation properties of Betaine, it
has also been found that antiperspirant formulations preserve their
fragrance stability upon ageing when the Al/Zr salt is used in
association with Betaine.
[0087] Additionally, the antiperspirant active can be a calcium
salt stabilized antiperspirant active. Examples of calcium salt
stabilized antiperspirant actives can be found in U.S. Patent
Application Publication No. 2006/0204463, which is incorporated
herein by reference only for the disclosure of the calcium salt
stabilized antiperspirant actives.
[0088] In addition, aluminum nitratohydrate and its combination
with zirconyl hydroxychlorides and nitrates, or aluminum-stannous
chlorohydrates, can be incorporated as an antiperspirant active.
Antiperspirant actives can include, but are not limited to, the
following: astringent salt of aluminum, astringent salt of
zirconium, aluminum bromohydrate, aluminum chlorohydrate, aluminum
dichlorohydrate, aluminum sesquichlorohydrate, aluminum
chlorohydrex PG, aluminum dichlorohydrex PG, aluminum
sesquichlorohydrex PG, aluminum chlorohydrex PEG, aluminum
dichlorohydrex PEG, aluminum sesquichlorohydrex PEG, aluminum
chloride, aluminum sulfate, aluminum zirconium chlorohydrate,
aluminum zirconium trichlorohydrate, aluminum zirconium
tetrachlorohydrate, aluminum zirconium pentachlorohydrate, aluminum
zirconium octachlorohydrate, aluminum zirconium tetrachlorhydrex
propylene glycol, aluminum zirconium trichlorohydrex Gly, aluminum
zirconium tetrachlorohydrex Gly, aluminum zirconium
pentachlorohydrex Gly, aluminum zirconium octachlorohydrex Gly,
buffered aluminum sulfate, potassium alum, sodium aluminum
chlorohydroxy lactate. In one embodiment, the antiperspirant active
is aluminum chlorhydrate. In another embodiment, the antiperspirant
active is aluminum zirconium tetrachlorhydrex propylene glycol.
Deodorant Active Materials
[0089] Any known deodorant active can be used. Examples of
deodorant active include, but are not limited to, antimicrobial
actives, alcohols, 2,4,4'-trichloro-2'-hydroxy diphenyl ether
(Triclosan), benzethonium chloride, polyhexamethylene biguanides,
triethylcitrate, 2-amino-2-methyl-1-propanol (AMP),
cetyl-trimethylammomium bromide, cetyl pyridinium chloride,
farnesol (3,7,11-trimethyl-2,6,10-dodecatrien-1-ol), bactericides,
and/or bacteriostats.
Emollients
[0090] The composition can contain emollients in any desired amount
to achieve a desired emollient effect. Emollients are known in the
art and are used to impart a soothing effect on the skin.
Non-volatile emollients are preferable in the present invention.
Classes of non-volatile emollients include non-silicone and
silicone emollients. Non-volatile, non-silicone emollients include
C.sub.12-15 alkyl benzoate. The non-volatile silicone material can
be a polyethersiloxane, polyalkyarylsiloxane or polyethersiloxane
copolymer. An illustrative non-volatile silicone material in the
present invention is phenyl trimethicone. Non-limiting examples of
emollients can be found in U.S. Pat. No. 6,007,799. Examples
include, but are not limited to, PPG-14 butyl ether, PPG-3 myristyl
ether, stearyl alcohol, stearic acid, glyceryl monoricinoleate,
isobutyl palmitate, glyceryl monostearate, isocetyl stearate,
sulphated tallow, oleyl alcohol, propylene glycol, isopropyl
laurate, mink oil, sorbitan stearate, cetyl alcohol, hydrogenated
castor oil, stearyl stearate, hydrogenated soy glycerides,
isopropyl isostearate, hexyl laurate, dimethyl brassylate, decyl
oleate, diisopropyl adipate, n-dibutyl sebacate, diisopropyl
sebacate, 2-ethyl hexyl palmitate, isononyl isononanoate, isodecyl
isononanoate, isotridecyl isononanoate, 2-ethyl hexyl palmitate,
2-ethyl hexyl stearate, Di-(2-ethyl hexyl)adipate), Di-(2-ethyl
hexyl)succinate, isopropyl myristate, isopropyl palmitate,
isopropyl stearate, octacosanol, butyl stearate, glyceryl
monostearate, polyethylene glycols, oleic acid, triethylene glycol,
lanolin, castor oil, acetylated lanolin alcohols, acetylated
lanolin, petrolatum, isopropyl ester of lanolin, fatty acids,
mineral oils, butyl myristate, isostearic acid, palmitic acid,
PEG-23 oleyl ether, olelyl oleate, isopropyl linoleate, cetyl
lactate, lauryl lactate, myristyl lactate, quaternised hydroxy
alkyl, aminogluconate, vegetable oils, isodecyl oleate, isostearyl
neopentanoate, myristyl myristate, oleyl ethoxy myristate, diglycol
stearate, ethylene glycol monostearate, myristyl stearate,
isopropyl lanolate, paraffin waxes, glycyrrhizic acid, hydrocyethyl
stearate amide.
[0091] The composition can additionally include ionizable inorganic
salts. These ionizable salts are of the form M.sub.aX.sub.b where
a=1, or 2 and b=1 or 2; M is a member chosen from Na.sup.+1,
Li.sup.+1, K.sup.+1, Mg.sup.+2, Ca.sup.+2, Sr.sup.+2, and Zn.sup.+2
and X is a member chosen chloride, bromide, iodide, citrate,
gluconate, lactate, glycinate, glutamate, ascorbate, aspartate,
nitrate, phosphate, hydrogenphosphate, dihydrogenphosphate,
formate, maloneate, maleate, succinate, carbonate, bicarbonate,
sulfate, and hydrogensulfate. In certain embodiments, the selected
salts are chosen from NaCl and ZnCl.sub.2. As will be appreciated
by those skilled in the art, while it may be possible under certain
circumstances to add a salt directly to a portion of the mixture
during manufacturing, it is desired to add the salt as a mixture or
solution of the salt in a carrier or solvent, particularly water.
Of course various concentrations of the salt premix can be
made.
[0092] The composition may also contain particulates which include
but are not limited to talc, mica, fragrance encapsulates, or
hydrophobically modified starches, such as aluminum starch octenyl
succinate (MACKADERM.TM. ASTRO-DRY.TM. from McIntyre Group Ltd.).
If the composition is in a liquid form and dispensed through a
roll-on applicator, the average particle size of the suspended
material is sized so that it can pass through the application to
prevent the ball applicator from malfunctioning. Usually, the
average particle size does not exceed 150 microns.
[0093] In certain embodiments, the composition may also contain as
an optional ingredient at least one malodor counteracting alpha,
beta-unsaturated ester or mixtures of such materials. In certain
embodiments, the level of malodor counteracting composition to
deliver a perceivable odor control benefit when delivered from an
antiperspirant and/or deodorant composition is 0.05 to 0.45 weight
% based on the entire composition. The alpha, beta-unsaturated
ester malodor counteracting materials are incorporated within the
oil phase of an antiperspirant composition. Example of these
malodor counteracting components can be found in U.S. Pat. No.
6,610,648 and U.S. Pat. No. 6,495,097, which are incorporated
herein only for their disclosure of the alpha, beta unsaturated
esters. For example, in this invention the odor neutralizing alpha,
beta unsaturated ester mixture demonstrates unexpected stability in
antiperspirant compositions containing low metal:chloride (M:Cl)
ratio salts free of glycine. Examples of the alpha, beta
unsaturated ester can be found in WO2005/025523, which was filed in
the U.S. as U.S. application Ser. No. 10/571,488, both of which are
incorporated herein by reference to the extent that they do not
conflict with the disclosure in this specification.
[0094] Examples of the alpha, beta unsaturated ester include, but
are not limited to:
(1) 3-phenyl-2-propenoic acid alkyl esters wherein R.sup.1 is a
substituent on the benzene ring and is chosen from an alkyl, an
alkoxy, an aryl, or a substituted aryl. In certain embodiments,
R.sup.1 is chosen from H, a C.sub.1 to C.sub.8alkyl, a C.sub.1 to
C.sub.8 alkoxy, or an aryl; and R.sup.2 is a subsistent group
replacing the carboxylic acid hydrogen to form the ester where
R.sup.2 has greater than 6 carbon atoms, an aryl, or a substituted
aryl group, in certain embodiments R.sup.2 is a C.sub.6 to C.sub.12
alkyl or is a benzyl group; and (2) an ester of fumaric or maleic
acid having linear ester carbon chains from 3-9 carbons, for
example dihexyl fumarate; (3) e-phenyl propenoic acid ester chosen
from octyl methoxy cinnamate, phenylethyl cinnamate, benzyl
cinnamate; (4) an aliphatic unsaturated ester, such as dihexyl
fumarate.
[0095] The composition may optionally further comprise absorbent
materials such as corn starch, talc, clay, sodium polyacrylate
and/or cotton fiber, and/or other materials such as fragrances,
bacteriostats and/or bacteriosides, colorants, etc. Known
bacteriostats include baceteriostatic quaternary ammonium compounds
such as 2-amino-2-methyl-1-propanol (AMP), cetyl-trimethylammomium
bromide, cetyl pyridinium chloride,
2,4,4N-trichloro-2N-hydroxydiphenylether (Triclosan), etc. and
various zinc salts.
[0096] Antioxidants may be added to the composition, preferably to
act as ingredient protectants and for maintenance of long-term
stability of the composition. Suitable antioxidants include
Tinogard, manufactured by Ciba Specialty Chemicals, Basel,
Switzerland.
[0097] The compositions as provided herein are described and
claimed with reference to their ingredients, as is usual in the
art. As would be evident to one skilled in the art, ingredients may
in some instances react with one another, so that the true
composition of the final formulation may not correspond exactly to
the ingredients listed. Thus, it should be understood that the
invention extends to the product of the combination of the listed
ingredients.
[0098] The individual component compositions of the present
invention may be manufactured using method steps generally known in
the art. Typically, the ingredients are combined and heated to melt
the components (other than inert filler), and the melted components
(together with particulate inert filler) are mixed. Desirably,
volatile materials, such as the fragrance materials, are
incorporated in the composition in the latter stages of the mixing
cycle, in order to avoid volatilization thereof. After mixing, the
molten composition can be poured directly into the dispensers, as
discussed herein in detail concerning the sequential pouring of the
two components, after which the compositions harden into a solid,
and the container is capped to preserve the product until use.
Method for Filling the Personal Care Composition into a
Container
[0099] This invention also relates to a method for filling into a
container a multi-component topical personal care composition in a
diffuse pattern where the components have at least one visually
discernable different characteristic, such as a marbleized
appearance. This produces a solid body of the topical personal care
composition which has an aesthetic appearance to the purchaser
and/or user of the product. More particularly, the container, or a
portion thereof such as a removable cap, may be transparent or
translucent, such that the aesthetic topical personal care
composition presents a unique appearance at the exterior of the
container prior to use, or if the container is opaque, such that
the aesthetic topical personal care composition presents a unique
appearance at the exposed portion of the composition for
application to the skin during use.
[0100] The present process will produce containers filled with two
or more components in a diffuse pattern design. The precise
patterns and the intensity of the patterns are the result of the
process parameters in the filling of the containers, and the
properties of the components of the topical personal care
composition. The process parameters include, inter alia, the
temperatures, and associated melting temperature, of the first and
the second components which are filled, as molten liquids, into the
container, the amount of each of the first component and of the
second component the shape of the container, and motion of the
container during the filling process, for example the degree and
rate of oscillation of the container.
[0101] FIG. 2 is a layout diagram of one embodiment of the filling
apparatus. In FIG. 2 a container 15 is at an early stage of being
filled with the first component 30 in molten form. There are two
separate components needed to produce the product in the container
15. These are a first component 10 and a second component 20. The
first component 10 and the second component 20 are visually
distinct from each other.
[0102] The first component 10 is fed into a heated reservoir 16
through an input conduit 18. Heated reservoir 16 maintains the
first component at a respective preset temperature in molten form.
The first component exits the heated reservoir 16 through an exit
conduit 14 to a valve 17. The first component 10 flows from the
valve 17 though feed conduit 12 and then through a first component
output conduit 19 of a nozzle 25 having an outlet 31. The valve 17
controls the time of injecting for the first component 10 and a
flow meter (not shown) may measure the required volume
corresponding to the desired mass of that component to be injected
into the container 15.
[0103] The second component 20 is correspondingly fed into a heated
reservoir 26 through an input conduit 28. Heated reservoir 26
maintains the second component at a respective preset temperature
in molten form. The second component exits the heated reservoir 26
through an exit conduit 24 to a valve 27. The second component 20
flows from the valve 27 though feed conduit 23 and then through a
second component output conduit 29 of the common nozzle 25. The
valve 27 controls the time of injecting for the second component 20
and a flow meter (not shown) may measure the required volume
corresponding to the desired mass of that component to be injected
into the container 15.
[0104] All of the conduits are thermally insulated as required to
ensure that the components 10, 20 are injected onto the container
15 in a molten state at the required temperatures.
[0105] Initially, the required measured volume of the first
component 10 is injected to partly fill the container 15.
Subsequently, the required measured volume of the second component
20 is injected into the container 15 to completely fill the
container 15. The first component 10 is at a lower temperature than
the second component 20. As the composition cools, for example by
application of forced cooling, such as by passage through a cooling
tunnel, the second component 20 solidifies within the molten first
component 10.
[0106] During injection of at least the second component 20 and
preferably also during injection too of the first component 10, the
container 15 is supported on a rotatable support 13 that is rotated
throughout the filling process, and optionally for a short period
hereafter. While any degree of rotation can be used, the rotation
is typically in a first direction through at least 90 degrees, and
then in a second direction through at least 90 degrees. In order to
achieve the desired marbleized random pattern, preferably the
container 15 is first rotated in a first direction and then in a
second direction in an oscillating motion. The oscillations of a
rotation in a first direction and then in a second direction may be
related to the flow rate of the first component 10 and second
component 20 into the container 15 to fill the container 15. The
container is typically rotated at least 90 degrees in the first
direction and at least 90 degrees in the second direction,
preferably at least about 180 degrees in the first direction and at
least about 180 degrees in the second direction.
[0107] The nozzle may extend within the container at the initiation
of the filling of the container and be separated from the container
during the filling of the container by relative withdrawal of the
nozzle from the container or the container being withdrawn from the
nozzle.
[0108] During this process, the nozzle 25 is maintained above fill
level 33 of the product 30 in the container 15. This may be
accomplished by either raising the nozzle 25 upward or by lowering
the container support 13. It is preferred to raise the nozzle 25.
The oscillations may be through about 120 degrees to about 480
degrees and may comprise about 1 oscillation to about 10
oscillations and preferably about 2 to 7 oscillations to fill a
container 15.
[0109] FIG. 3 is a further embodiment of the filling apparatus of
FIG. 2 but with the rotatable container support 13 tilted at an
angle to the horizontal so that the container axis is inclined to
the nozzle 25 and to the vertical by an angle of typically up to
about 20 degrees. Thus the container 15 is tilted at an angle to
the nozzle 25 as it is being rotated and filled. The angling may be
at an angle of about 3 degrees to about 20 degrees, typically up to
about 15 degrees, to the nozzle 25.
[0110] In another embodiment, not illustrated, the support 13
includes a device to vibrate the support 13 and thereby vibrate the
container 15. The vibration may occur while the container 15 is
being rotated. The result is that the container 15 is being
vibrated while the container 15 is being oscillated and filled with
the first component and the second component to produce the random
pattern composition 30. The vibration and oscillation do not have
to occur at the same time. Additionally, it is not required that
the container 15 be oscillated in this embodiment of the
invention.
[0111] The vibration of the support 13 and the container 15 during
the filling of the container will cause the pattern of the product
30 in the container 15 to become more diffuse and will promote
product 30 as it exits nozzle 25 to flow away from nozzle 25 to
parts of the container that are more distant from the nozzle 25.
This will be useful in filling non-circular containers such as oval
containers that have an elliptical cross-section. It also will be
useful in the filling of non-axial containers. These are containers
that are not symmetrical around the axis of the container formed
through the container fill and dispensing opening. Both the
amplitude and the frequency of the vibrations will depend on the
particular formulations.
[0112] The color of the first component 10 and the second component
20 may vary. However, the objective usually will be to use
contrasting colors so as to make the diffuse design more vibrant
and visible. A useful pairing of two components is to have one
white and the other a color. With color matching the variations are
essentially unlimited. Further, there can be more than two
components sequentially injected into the container. There can be
three or more components, and in addition, particles or capsules
may be included. This will provide a wider range of diffuse
patterns to products.
[0113] The container 15 may be of essentially any shape, size or
material construction. Since the stick products, such as
antiperspirant/deodorant stick products, will primarily be consumer
product-sized, the containers will contain 25 ml to 2 liters,
typically 50 to 100 ml, of product and may be constructed of
polyethylene, clarified polypropylene, polyethylene terephthalate
and polyvinyl chloride.
Example
[0114] In the following is set forth an example of the present
invention. The example is illustrative, and not limiting, of the
present invention. In the following example, all amounts are in
percent of the total weight of the composition.
[0115] First and second antiperspirant components having the
compositions in Table 1 are made using known formulation
techniques. Component 1 uses stearyl alcohol as the fatty alcohol
co-gellant with hydrogenated soybean oil to produce a relatively
low melting point component having a melting point of 47-53.degree.
C. Component 2 uses polyethylene as the hydrocarbon co-gellant to
produce a alcohol co-gellant with hydrogenated soybean oil to
produce a relatively high melting point component having a melting
point of 70-76.degree. C. The iodine value of the hydrogenated
soybean oil used in the examples is greater than 0 to 1. The weight
average molecular weight of the polyethylene used in the examples
is indicated by the product number.
TABLE-US-00001 TABLE 1 Stick Composition Component 1 Component 2
Cyclomethicone (DC245 from 15.2 13.6 Dow Corning) C.sub.12-15 alkyl
benzoate 6 17.1 Stearyl alcohol 15.8 0 Polyethylene 0 11 PEG-8
distearate 3.4 4.3 Hydrogenated soybean oil 3.4 4.3 Antiperspirant
Active Z576 22.4 Antiperspirant Active 908 20.4 0 PPG-14 butyl
ether 6 0 Talc 0 0 Behenyl alcohol 0.2 0 Blue Cosmetic Wax (or
FD&C Green) 0 0.2
[0116] Component 1 is heated to a temperature of 66.degree. C.,
which is above the melting point of Component 1. Component 2 is
heated to a temperature of 82.degree. C., which is above the
melting point of Component 2. Both components are stored in
respective temperature controlled heated reservoirs having a rotary
hydrofoil blade rotating at 60-70 rpm. An inverted barrel of a
conventional stick container is positioned on a rotatable support
plate that is oscillatingly rotated. A measured amount,
corresponding to 85 wt % of the final stick product, of the molten
Component 1 is injected downwardly into the inverted barrel. Then,
after completion of the injection of Component 1, a measured
amount, corresponding to 15 wt % of the final stick product, of the
molten Component 2 is injected into the molten mass of Component 1.
A base is applied to the barrel, and then the barrel is transferred
to a cooling tunnel, set at 17-18.degree. C., and allowed to cool
for 15-20 minutes prior to conditioning at ambient temperature, and
final product labeling.
[0117] As the composition cools, Component 2 starts to solidify
within the still molten Component 1 and completes solidification
before solidification of the lower melting point Component 1. The
result is a marbleized appearance throughout the composition. The
applied forced cooling of the composition assists minimization of
migration or bleeding of the higher melting temperature colored
phase into the lower melting temperature white background
phase.
[0118] Various other modifications to the disclosed embodiments
will be apparent to those skilled in the art. In particular,
alternative embodiments having a cap fitted to a container so that
the package may be selectively stood upright either on its
container end or on its cap end may comprise stick dispensers, for
dispensing a solid stick of a personal care composition such as an
antiperspirant composition and/or a deodorant composition, rather
than roll-ball dispensers.
* * * * *