SHEVADE MAKARAND (US)
KASAT RADHAKRISHNA (US)
LINN ELIZABETH (US)
MOGHE BHALCHANDRA (US)
SHEVADE MAKARAND (US)
KASAT RADHAKRISHNA (US)
LINN ELIZABETH (US)
US4382079A | 1983-05-03 | |||
US4664909A | 1987-05-12 | |||
EP0116406A2 | 1984-08-22 |
1. | A colored, soapgelled composition, comprising: an alcohol; a soap in an amount effective to gel the composition; an alkali metal bicarbonate; and an inorganic pigment. |
2. | A colored, soapgelled composition according to claim 1 , wherein said composition is a deodorant composition and wherein said alkali metal bicarbonate is contained in a deodorant effective amount. |
3. | A colored, soapgelled composition according to claim 2, wherein said deodorant composition is a deodorant stick composition and wherein said soap is contained in an amount effective to provide a solid stick composition. |
4. | A colored, soapgelled composition according to claim 1 , further comprising water. |
5. | A colored, soapgelled composition according to claim 4, wherein said alcohol is contained in an amount of 55 80 wt. %, said water is contained in an amount of 9 25 wt. %, said soap is contained in an amount of 4 10 wt. %, said alkali metal bicarbonate is contained in an amount of 0.01 5 wt. %, and said inorganic pigment is contained in an amount of 0.01 5 wt. %. |
6. | A colored, soapgelled composition according to claim 5, wherein said alkali metal bicarbonate is contained in an amount of 0.01 3 wt. %. |
7. | A colored, soapgelled composition according to claim 5, wherein said alkali metal bicarbonate is contained in an amount of 0.01 1 wt. %. |
8. | A colored, soapgelled composition according to claim 5, wherein said inorganic pigment is contained in an amount of 0.01 1 wt. %. |
9. | A colored, soapgelled composition according to claim 5, wherein said inorganic pigment is contained in an amount of 0.01 0.2 wt. %. |
10. | A colored, soapgelled composition according to claim 2, wherein said inorganic pigment is contained in said composition in an amount effective to provide color to said composition and less than an amount effective to color human skin upon application of said composition thereto. 1 1 . A colored, soapgelled composition according to claim 1 , wherein said inorganic pigment is contained in said composition in an amount of 001 to 5 wt. %. |
11. | 1 2. A colored, soapgelled composition according to claim 1 , wherein said inorganic pigment is contained in an amount of 0.01 1 wt. %. |
12. | 13 A colored, soapgelled composition according to claim 5, wherein said inorganic pigment is contained in an amount of 0.01 0.2 wt. %. |
13. | A colored, soapgelled composition according to claim 1 , wherein said alcohol is at least one polyhydric alcohol. 1 5. |
14. | A colored, soapgelled composition according to claim 14, wherein said alcohol is at least one alcohol selected from the group consisting of propylene glycol and dipropylene glycol. |
15. | A colored, soapgelled composition according to claim 1 , wherein said alcohol is at least one monohydric alcohol. |
16. | A colored, soapgelled composition according to claim 16, wherein said alcohol is ethanol. |
17. | A colored, soapgelled composition according to claim 17, wherein said alcohol comprises a mixture of at least one monohydric alcohol and at least one polyhydric alcohol. |
18. | A colored, soapgelled composition according to claim 1 , wherein said soap is at least one salt of at least one fatty acid. |
19. | A colored, soapgelled composition according to claim 1 9, wherein said soap is at least one sodium salt of at least one saturated fatty acid having a carbon chain length C12 C22. |
20. | A colored, soapgelled composition according to claim 20, wherein said soap comprises sodium stearate. |
21. | A colored, soapgelled composition according to claim 1 , wherein said alkali metal bicarbonate is selected from the group consisting of sodium bicarbonate and potassium bicarbonate. |
22. | A colored, soapgelled composition according to claim 1 , wherein said inorganic pigment is selected from the group consisting of bismuth oxychloride, mica, iron oxides, titanium dioxide, manganese violet, ultramarine blue, ultramarine pink, ultramarine violet, ultramarine rose, chromium hydroxide green, chromium oxide green, bronze powder, aluminum powder, ferric ferrocyanide, ferric ammonium ferrocyanide and disodium copper EDTA. |
23. | A colored, soapgelled composition according to claim 23, wherein said inorganic pigment is selected from the group consisting of chromium oxide green, chromium hydroxide green and ultramarines. |
24. | A colored, soapgelled composition according to claim 1 , wherein said inorganic pigment is dispersed in said composition and has a particle size of 40 μm or less. |
25. | A colored, soapgelled deodorant composition, comprising: 55 80 wt. % of at least one alcohol selected from the group consisting of ethanol, propylene glycol and dipropylene glycol; 9 25 wt. % water; 4 10 wt. % of at least one salt of a fatty acid; 001 5 wt. % of at least alkali metal bicarbonate selected from the group consisting of sodium bicarbonate and potassium bicarbonate; and 001 5 wt. % of at least one inorganic pigment selected from the group consisting of bismuth oxychloride, mica, iron oxides, titanium dioxide, manganese violet, ultramarine blue, ultramarine pink, ultramarine violet, ultramarine rose, chromium hydroxide green, chromium oxide green, bronze powder, aluminum powder, ferric ferrocyanide, ferric ammonium ferrocyanide and disodium copper EDTA. |
Background Of The Invention
The present invention relates to a colored, soap-containing, solid composition, e.g., a deodorant composition or, more particularly, a
deodorant stick composition, containing an alcohol, gelled with a soap, an alkali metal bicarbonate and a pigment, wherein the composition maintains a stable color over an extended period of time.
Bicarbonate containing solid compositions based on alcoholic soap
gels are known in the prior art. United States Patent Nos. 4,382,079; 4,440,741 and 4,440,742 to Marschner (the contents of each of which
are incorporated herein by reference) describe deodorant cosmetic sticks containing an alkali metal bicarbonate dispersed or dissolved in aqueous or anhydrous polyhydric alcohol or a mixture of polyhydric and monohydric alcohol, gelled by a minor amount of an alkali metal salt of a fatty acid. While it is known in the art to make such deodorant sticks uncolored or to include FD & C or D & C colorants, applicants have found
that solid soap-gelled, bicarbonate containing compositions colored using FD & C and D & C colors are unstable over extended periods of time.
Accordingly, it is still desired to provide a bicarbonate-containing soap- gelled solid composition which can maintain a stable, aesthetically,
superior color for a relatively long period of time.
Summary Of The Invention
Accordingly, it is an object of the present invention to provide a
colored, soap-containing, solid composition including an alkali metal bicarbonate, the color of which remains stable for an extended period of
time.
It is a further object of the present invention to provide a colored,
soap-containing solid deodorant composition including an effective amount of a deodorant active metal bicarbonate, the color of which
remains stable over an extended period of time. It is a further object of the present invention to provide a colored
deodorant stick composition containing a soap gelling agent and an effective amount of a deodorant active alkali metal bicarbonate, the color
of which remains stable of an extended period of time.
The foregoing objects are achieved by providing a composition comprising an alcohol, a soap gelling agent, an alkali metal bicarbonate and at least one inorganic pigment. Since the alkali metal bicarbonate, e.g., sodium bicarbonate and/or potassium bicarbonate, is a deodorant active material, the composition is a deodorant composition when a deodorant effective amount of alkali metal bicarbonate is added. The
composition can be made into a bar (e.g., soap bar) or stick (deodorant
stick) form. The use of inorganic pigments results in a composition which does not exhibit a color change over an extended period of time, even
under accelerated (e.g., high temperature) conditions. Examples of
inorganic pigments include bismuth oxychloride, mica, iron oxides,
titanium dioxide, manganese violet, ultramarine blue, ultramarine pink,
ultramarine violet, ultramarine rose, chromium hydroxide green, chromium
oxide green, bronze powder, aluminum powder, ferric ferrocyanide, ferric ammonium ferrocyanide and disodium copper EDTA.
Illustratively, the soap used to gel the composition is a salt,
preferably a sodium salt, of fatty acids for example, sodium salts of
saturated or unsaturated fatty acids having a carbon chain length of C 12 -
C 22 . Most preferably, the soap gellant is an alkali metal stearate, e.g.,
sodium stearate. The alkali metal stearate and alkali metal bicarbonate
may be separately added to the remaining elements of the composition to
form the composition or may be formed in situ by reaction between alkali
metal carbonate and stearic acid.
The pigment is preferably contained in the composition in an
amount of 0.01 to 5% by weight, more preferably 0.01 to 1 % by weight,
most preferably 0.01 to 0.2% by weight. The alkali metal bicarbonate is
preferably contained in the composition in an amount of 0.01 to 5% by
weight, more preferably 0.01 to 3% by weight, most preferably 0.01 to
1 % by weight.
Detailed Description Of The Invention
While the invention will be described in connection with specific
and preferred embodiments, it will be understood that it is not intended to
limit the invention to those embodiments. To the contrary, it is intended
to cover all alterations, modifications and equivalents as may be included
within the spirit and scope of the invention as defined by the appended
claims.
Throughout the present specification, where compositions are
described as including or comprising specific components or materials, it
is contemplated by the inventors that compositions of the present
invention also consist essentially of, or consist of, the recited components
or materials. Accordingly, throughout the present disclosure any
described composition of the present invention can consist essentially of,
or consist of, the recited components or materials.
The present invention contemplates a colored, soap-containing solid
composition (e.g., a deodorant composition or deodorant stick
composition) containing alcohol and, optionally water, an alkali metal
bicarbonate, and gelled with soaps, e.g., salts of saturated or unsaturated
fatty acids, the color being provided by an inorganic pigment.
The alcohol included in the solid composition of the present
invention can be a monohydric and/or polyhydric alcohol (for example,
ethanol as a monohydric alcohol, and propylene glycol and dipropylene
glycol as polyhydric alcohol). The alcohol can be a mixture of alcohols,
including a mixture of monohydric and polyhydric alcohols, or a mixture of
monohydric alcohols or a mixture of polyhydric alcohols. Various
polyhydric alcohols which can be used in soap-gelled alcohol and water-
containing stick compositions are described in US Patent No. 4,759,924
to Luebbe et al, the contents of which are incorporated herein by
reference in their entirety, and can also be used in the present invention.
A necessary component of the composition according to the
present invention is a soap gel-forming agent. Sodium salts of fatty acids
of carbon chain length C 12 -C 22 , e.g. , sodium salts of saturated fatty acids
having the above-mentioned carbon chain length, can be utilized as the
gel-forming agent. Preferred gal-forming agents according to the present
invention include sodium salts (that is, soaps) of relatively long-length-
carbon-chain saturated fatty acids (for example, sodium salts of saturated
fatty acids having carbon chain lengths of C 20 -C 22 ). The fatty acid
portions of the soap can include a mixture of different saturated fatty
acids of carbon chain length in the range of C 12 -C 22 , preferably including
some C 20 and C 22 . By utilizing such relatively long chain length fatty
acids, a product is provided having a relatively high melting temperature,
and, correspondingly, relatively greater stability.
The alkali metal bicarbonate is preferably sodium bicarbonate
and/or potassium bicarbonate, most preferably sodium bicarbonate. The
alkali metal bicarbonate is preferably contained in the composition in an
amount of 0.01 to 5% by weight, more preferably 0.01 to 3% by weight,
most preferably 0.01 to 1 % by weight. In this connection 3% is the
solubility limit of baking soda in water. Thus, if the quantity of
bicarbonate is greater than 3%, the composition becomes more opaque.
The bicarbonate can be itself added with the other elements to form the
composition or may be formed in situ by the reaction of stearic acid with
an alkali metal carbonate.
The inorganic pigment may be, for example, at least one of bismuth
oxychloride, mica, iron oxides, titanium dioxide, manganese violet, ultramarine blue, ultramarine pink, ultramarine violet, ultramarine rose, chromium hydroxide green, chromium oxide green, bronze powder, aluminum powder, ferric ferrocyanide, ferric ammonium ferrocyanide and disodium copper EDTA. The ultramarine are complexes of sodium aluminum sulfosilicates having the typical formula Na(AISiO)S with C.I. 77013. Chromium oxide green has the formula Cr 2 O 3 with C.I. Index No. 77288 and C.I. Pigment Green No. 17. Chromium hydroxide Green has
the formula Cr 2 O (OH 4 ) with C.I. Index No. 77289 and C.I. Pigment Green No. 18. The inorganic pigment is contained in the composition in an amount sufficient to provide the composition with color. While inorganic pigments are currently used in commercially available cosmetic products such as blush, eye shadow, eye mascara, etc., these compositions contain pigments in a larger amount than do the compositions of the present invention. The amount of pigment contained in products such as blush, eye shadow, eye mascara, etc. is high enough to deposit the color when the composition is applied to the skin. The pigment content in the compositions of the present invention are much lower such that when, for example, deodorant is applied to the skin, the skin is not colored by the composition. Preferably, the pigment is contained in the composition in
an amount of 0.01 to 5% by weight, more preferably 0.01 to 1 % by weight, most preferably 0.01 to 0.2% by weight.
The pigment is dispersed (suspended) in the composition. Preferably, the pigment has a particle size of 40 μm or less.
Illustratively, and not limiting, the composition according to the
present invention can also include the following amounts (in percent by
weight of the total weight of the composition) of other components:
Alcohol (e.g., propylene glycol): 55 - 80%
Water: 9 - 25%
Soap: 4 - 10%
Other materials can be included in the compositions according to
the present invention, and include various cosmetically active materials.
Thus, materials such as other deodorant active materials (including
fragrances), sunscreens, skin conditions, nail conditioners, and the like,
can be included in the composition, provided that they do not
unsatisfactorily affect color and, where appropriate, can be applied to the
human body.
Compositions according to the present invention have use as bar
soap or underarm deodorant compositions (e.g., by application to axillary
regions of the human body), since the alkali metal bicarbonate is a
deodorant active material. Various other deodorant active materials can
be included in compositions according to the present invention and are
described in US Patent No. 4,759,924, and include bacteriostats and
fragrances (e.g., perfumes), and bactericides, among others. For
example, another deodorant material useful in the present compositions in
addition to the bicarbonate is 2-4-4'-trichloro-2'-hydroxydiphenyl ether
(CTFA name: Triclosan).
The compositions according to the present invention are
manufactured by processing techniques conventional in the art.
Specifically, the solid components of the composition (other than the
bicarbonate) are melted and then the components are mixed. Preferably,
the inorganic pigment is added after addition of the bicarbonate.
Preferably, the fragrance (if any) is added last, with the previously mixed
components being cooled to a lower temperature (while still maintaining a
liquid) prior to adding the fragrance, so as to limit any volatilization of the
fragrance. While still in the liquid state, the composition is filled in a
dispensing package (as conventional in the art) and then cooled to solidify
the product in the package.
Alternatively, a portion or all of the soap gellant and/or alkali metal
bicarbonate can be produced in situ by mixing the components, including
stearic acid and alkali metal carbonate so as to produce, in situ, alkali
metal stearate and alkali metal bicarbonate.
The compositions according to the present invention are utilized by
conventional techniques. For example, when utilizing compositions
according to the present invention as an axillary deodorant solid stock,
the solid stick product is elevated out of a dispensing package so as to
expose the stick product, and the exposed portion of the stick product is
then rubbed against, e.g., the axillary region of the human body so as to
deposit the deodorant active materials in the axillary region.
While in the foregoing the present invention has been described in
terms of a deodorant solid stick composition for use in axillary regions,
the present invention is not so limited, and the composition according to
the present invention has various uses depending on the active material
incorporated therein, including as a soap or deodorant for other parts of
the body, sunscreen, insect repellant, etc.
In the following, specific examples of compositions within the
scope of the present invention will be set forth. Of course, these specific
examples are illustrative of the present invention and are not limiting.
In the following examples, the stated percentages are percentages
by weight, of the stated component, relative to the total weight of the
composition. The names utilized are the CTFA names for the ingredients,
where applicable.
Comparative Example And Examples II - IV
Five compositions were prepared having the components (with
amounts in weight percent) indicated in the following table. It will be
recognized that FD & C green was used as a colorant in the Comparative
Example while inorganic pigments (chrome oxide green and chrome
hydroxide green) were used as the colorant in Examples I to IV. A portion
of each of the resulting compositions was stored at room temperature for
more than six months and the color change observed after approximately
twelve weeks and after six months. Another portion of each of the
compositions was stored at 1 20°F for four weeks and the color change
observed. As can be seen from the following table, a color change was
observed in the comparative example containing FD & C green at room
temperature after about twelve weeks and at 1 20°F after about four
weeks. On the other hand, the compositions of the present invention
exhibited a stable color for an extended period of time both at room
temperature (greater than six months) and at 1 20°F (more than four
weeks).
Comparative Examples Example I II III IV
Propylene Glycol 68.47 70.47 70.47 71 .1 7 71 .1 7
Irgasan DP 300 0.25 0.25 0.25 0.25 0.25
Sodium Stearate 7.00 7.00 7.00 7.00 7.00
D.I. Water 20.48 20.48 20.48 20.48 20.48
Stearyl Alcohol 0.20 0.20 0.20
Sodium Chloride 0.50 0.50 0.50
Sodium Bicarbonate 1 .00 1 .00 1 .00 1 .00 1 .00
FD&C Green (0.1 %) 0.30
Chromium Oxide Green 0.10 0.1 0
Chromium Hydroxide Green 0.10 0.10
Fragrance Q.S Q.S Q.S Q.S Q.S
Stability
Room Temp, (more than 6 mos.) Color Change STABLE STABLE STABLE STABLE
1 20°F (4 weeks) Color Change STABLE STABLE STABLE STABLE
Examples V And VI
The compositions shown in the following table were prepared by
incorporating the indicated components in the amount indicated in weight
percent. The stearic acid in sodium carbonate react in situ to form sodium
stearate and sodium bicarbonate.
Baking Soda Containing Deodorant Stick Formula Examples
Example V Example VI
Propylene Glycol 68.87 68.00
Irgasan 0.25 0.25
Stearic Acid 4.00 4.00
Sodium Carbonate 1.60 1.60 D.I. Water Q.S. Q.S. Sodium Bicarbonate 1 .00 1 .00 PPG-5 CETETH-20 3.00 3.00 Fragrance 2.00 1.00
Chromium Oxide Green 0.10
Chromium Hydroxide Green 0.10
(Note: The sodium Stearate is produced In situ)
While we have shown and described several embodiments in
accordance with the present invention, it is understood that the same is
not limited thereto, but is susceptible of numerous changes and
modifications as known to those skilled in the art. Therefore, we do not wish to be limited to the details shown and described herein, but intend
to cover all such changes and modifications as are encompassed by the
scope of the appended claims.