Source: http://www.google.com/patents/US4440742?dq=6819670
Timestamp: 2016-10-28 05:08:07
Document Index: 221914878

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Patent US4440742 - Bicarbonate-containing stick deodorant - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsThere is disclosed a stable cosmetic stick deodorant comprising a polyhydric alcohol solidified by a fatty acid soap and containing about 0.1 to 70% alkali metal bicarbonate without the use of bacteriostats, and the method of making said stick deodorants....http://www.google.com/patents/US4440742?utm_source=gb-gplus-sharePatent US4440742 - Bicarbonate-containing stick deodorantAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS4440742 APublication typeGrantApplication numberUS 06/012,938Publication dateApr 3, 1984Filing dateFeb 16, 1979Priority dateOct 25, 1977Publication number012938, 06012938, US 4440742 A, US 4440742A, US-A-4440742, US4440742 A, US4440742AInventorsFrank W. MarschnerOriginal AssigneeColgate-Palmolive CompanyExport CitationBiBTeX, EndNote, RefManPatent Citations (8), Non-Patent Citations (2), Referenced by (23), Classifications (13) External Links: USPTO, USPTO Assignment, EspacenetBicarbonate-containing stick deodorant
US 4440742 AAbstract
1. A stable transparent water-based deodorant stick comprising a water-soluble amount of at least 0.1% by weight of sodium or potassium bicarbonate as the essential deodorizing agent, dissolved in an aqueous polyhydric alcohol, solidified by an alkali metal salt of a saturated C14 -C20 fatty acid gelling agent, said polyhydric alcohol constituting about 20-90% by weight of the total composition.
13. A method of preparing a stable water-based deodorant stick containing a water-soluble amount of sodium or potassium bicarbonate, which comprises mixing an aqueous solution of said bicarbonate with a heated solution comprising about 20-90% by weight polyhydric alcohol, and an alkali metal salt of a saturated C14 -C20 fatty acid gelling agent, to form a warm homogeneous liquid product, pouring the warm liquid into molds and cooling to room temperature to solidify said liquid into a rigid transparent deodorant stick.
14. A method in accordance with claim 13, wherein said gelling agent is formed in situ by the reaction of a C14 -C20 saturated fatty acid with an alkali metal hydroxide, dissolved in said heated polyhydric alcohol.
17. A method in accordance with claim 13, wherein both the bicarbonate and the alkali metal fatty acid gelling agent are simultaneously formed in situ by the reaction of an aqueous solution of sodium or potassium carbonate with a heated polyhydric alcohol solution of a C14 -C20 saturated fatty acid.
The preferred suspending agents are the hydrophobically treated montmorillonite or hectorite clays available under the trademark "Bentone" which are prepared by reacting a clay such as bentonite or hectorite in a cation exchange system with a variety of amines. Different amines are reacted to obtain differenet Bentone suspending agents which may also differein proportions of SiO2, MgO and Al2 O3, all of which have a particle size below about 5 microns and are commercially available from the NL Industries, Inc. The suspending agent is employed in amounts of about 0.1 to 10% and preferably 0.5 to 2% by weight of the total composition.
The method of making the aqueous bicarbonate-containing deodorant stick of instant invention generally comprises mixing an aqueous dispersion or solution of the bicarbonate plus suspending agent (when used) with a hot or heated solution of polyhydric alcohol, stearic acid and alkali metal hydroxide, preferably at about 160� F.; followed by the addition of perfume, colorants and other optional ingredients, (if any) to form a homogeneous liquid product; pouring the warm liquid into molds and cooling to room temperature. During the cooling period, gelation takes place and the resultant product assumes a rigid form which is capable of application to the skin by gently rubbing, whereby a thin film of said composition is deposited on the desired areas of the skin. The resultant rigid stick is transparent or opaque, depending on the amount of bicarbonate added and the particular ingredient employed. This stick is stable, i.e., there is no separation out of specific ingredients; and it possesses a good shelf-life, i.e., no syneresis or shrinkage occurs.
(Na Soap--Propylene Glycol--Water Based)
______________________________________Example    1        2       3     4     5______________________________________Part 1Propylene Glycol      53.45    53.35   52.45 50.45 45.45Stearic Acid      6.00     6.00    6.00  6.00  6.0019.1% Na2 O      3.60     3.60    3.60  3.60  3.60Caustic SodaPart 2Deionized water      35.6     35.6    35.6  35.6  28.20 -Sodium -- 0.1 1.0 3.0 --BicarbonateSodium     --       --      --    --    15.00Bicarbonate(Micropulverized)Bentone LT --       --      --    --    0.50Part 3Perfume    1.00     1.00    1.00  1.00  1.00Triclosan  0.10     0.10    0.10  0.10  --(Bacteriostat)1Uvinul 400 0.05     0.05    0.05  0.05  0.05(Ultravio-let absorber)2Part 4FDC Blue #1      0.20     0.20    0.20  0.20  0.200.1% of Soln.      100.00   100.00  100.00                             100.00                                   100.00Visual     Translu- Trans-  Trans-                             Trans-                                   OpaqueAppearance cent to  parent  parent                             lucent      OpaquepH (10%    10.32    9.7     9.1   8.9   8.5Aqueous Soln.)______________________________________ .sup. 1 4,2',4'trichloro2-hydroxy diphenyl ether 2 2,4 dihydroxy benzophenone
The stearic acid and the propylene glycol are mixed and heated to 160� F., followed by addition of the caustic soda.
The two solutions are mixed together and cooled to 125�-130� F. The perfume, bacteriostat and uvinol are admixed and added to the above mixture, followed by the addition of the coloring agent.
(Na Soap--Propylene Glycol--Ethanol--Water Based)
______________________________________Example             6        7______________________________________Part 1Propylene Glycol    32.80    32.80Ethanol (95%)       35.75    32.75Stearic Acid (B Grade)               6.00     6.0019.1% Na2 O Caustic Soda               3.60     3.60Part 2Deionized Water     20.00    20.00Sodium Bicarbonate  --       3.00Part 3Perfume             1.00     1.00Triclosan (Bacteriostat)               0.10     0.10Uvinul 400          0.05     0.05Butyl Stearate      0.50     0.50Part 4FDC Blue #1 0.1% aq. soln               0.20     0.20               100.00   100.00Visual Appearance   Opaque   OpaquepH                  9.5      8.8______________________________________
(Combining Stearic Acid with Sodium Carbonate)
______________________________________Example            8          9______________________________________Part 1Propylene Glycol   53.45      52.60Stearic Acid (B Grade)              6.00       6.00Trichlorocarbanilide (TCC)              0.15       --Part 2Deionized water    36.6       33.75Sodium Carbonate   2.4        2.40Sodium Bicarbonate --         3.00Bentone LT         --         0.50Methocel (thickener)1              --         0.40Part 3Perfume            1.00       1.00Uvinul 400         0.05       0.05Triclosan (Bacteriostat)              0.05       --Part 4FDC Blue #1 0.1% aq. Soln              0.30       0.30              100.00     100.00Visual Appearance  Transparent                         OpaquepH (10% aqueous Soln)              9.0        8.8______________________________________ 1 hydroxy propylmethyl cellulose
Part 1 is prepared by heating and dissolving the TCC and the stearic acid in propylene glycol at 160� F.
Part 2 is prepared by dissolving the sodium carbonate and/or the sodium bicarbonate in water with mixing and heating to 160� F. Methocel is gradually added with rapid mixing followed by the gradual addition of Bentone.
Part 1 is gradually added to Part 2 and cooled to about 130� F.
Example 12 is significantly more transparent than Examples 10 and 11 and retains its transparency after 20 minutes at 0� in a freezer, whereas the other sticks become slightly hazy after freezing, thereby demonstrating the superior stability of the bicarbonate-containing stick. In addition, Example 12 retains its transparency after standing overnight, whereas the other sticks become less transparent.
______________________________________Example                13      14Base                   A       C______________________________________Part 1Propylene Glycol       55.0    75.73Stearic Acid (Double pressed grade)                  6.0     --Stearic Acid (Triple Pressed grade)                  --      5.00Bentone LT             2.0     1.00Tallow Fatty Acid      --      1.00Part 2Water                  26.48   10.0Soda Ash (Sodium Carbonate)                  2.40    2.37Part 3Perfume                1.0     1.0Glycerol Monostearate  --      0.5Procetyl AWS (emulsifier)1                  7.0     3.0D &amp; C Green 8 (2.75%)  0.08    --FDC Green 3 (0.1%)     0.04    --D &amp; C Red 19 (0.1%)    --      0.4                  100.00  100.0050%      Cream Stick   50%     Cream Stick    Base A                Base C50%      Baking Soda   25%     Baking Soda    (Micropulver-         (Micropulver-    ized)                 ized)                  25%     Italian Talc100%                   100%______________________________________
Part 1 ingredients are admixed and heated to 160� F. and added to the aqueous solution of Part 2 at 160� F. The mixture is cooled to 140� F. and a mixture of Part 3 ingredients are added thereto with mixing to form the cream stick base.
The micropulverized baking soda per se or jointly with the talc powder are mixed with the hot liquid cream base at a temperature of at least 125� F. The warm flowable mixture is poured into containers and cooled to form a solid stick. These high solid stick deodorants go on the skin like a cream. The talc baking soda sticks give a particularly smooth feel when rubbed on the skin.
(Use of Potassium Bicarbonate)
______________________________________Example         15          16______________________________________Part 1Propylene Glycol           52.3        44.3Sodium Stearate 8.0         8.0Procetyl AWS    3.0         3.0Part 2Deionized water 35.0        35.0Potassium Bicarbonate           0           8.0Part 3Sodium Chloride 0.2         0.2Perfume         1.5         1.5           100.00      100.00Appearance      Translucent to                       Translucent to           Transparent TransparentpH (10% aqueous solution)           10.5        9.5______________________________________
Sodium stearate and procetyl AWS are dissolved in hot propylene glycol at about 180� F. Potassium bicarbonate is dissolved in warm deionized water. Part 2 is added to Part 1 with mixing and Part 3 ingredients are admixed.
______________________________________Example              17______________________________________(Anhydrous Stick)Propylene Glycol     75.8Sodium Stearate      8Procetyl AWS         4Sodium Bicarbonate (micropulverized)                10Bentone LT           0.5Perfume              1.5FDC Green #3 (0.1% in ethanol)                0.2                100.00Appearance           Greenish opaque (with                good aesthetics)______________________________________
Bentone LT is dispersed in propylene glycol and procetyl AWS solution with rapid mixture. Sodium stearate is dissolved in the mixture at about 185� F. The temperature is reduced to 160� F. and the sodium bicarbonate powder is admixed followed by perfume and color. The product is poured into containers and cooled to form a solid stick.
______________________________________Example               18______________________________________(Substitution of Glycerine for Propylene Glycol)Part 1Glycerine             50.00Stearic Acid (Double Pressed Grade)                 6.00Part 2Deionized water       35.83Soda Ash (Sodium Carbonate                 2.40Part 3Perfume               1.50Triclosan (Bacteriostat)                 0.15Procetyl AWS          4.00D &amp; C Green #8 (2.75%)                 0.08FDC Green #3 (0.1%)   0.04                 100.00Appearance            Transparent______________________________________
Part 1 is prepared by dissolving stearic acid in glycerine at 160� F.
Part 2 is prepared by dissolving soda ash in deionized water at 160� F.
Part 1 is added gradually to Part 2 with mixing and cooled to 145� F.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS1558405 *Mar 6, 1924Oct 20, 1925Smith Arthur GDeodorant compositionUS2857315 *Aug 8, 1955Oct 21, 1958Pharma Craft CorpPropylene glycol soap gel stick anti-perspirantUS2900306 *Mar 1, 1956Aug 18, 1959Colgate Palmolive CoCosmetic and deodorant sticksUS2970083 *Mar 6, 1958Jan 31, 1961Chesebrough PondsTwo phase deodorant-antiperspirant stickUS3090728 *Feb 20, 1957May 21, 1963Berger Frank MilanTitanic acid complexes of hydroxy aliphatic carboxylic acids antiperspirant compostionsUS3259545 *Jul 10, 1961Jul 5, 1966Wallace & Tiernan IncStable aluminum hydroxide gel or aluminum hydroxide-sodium zirconium lactate antiperspirant stickUS3933433 *Dec 18, 1974Jan 20, 1976Dynamation Enterprises, Inc.Method and apparatus for gas detectionGB760559A * Title not available* Cited by examinerNon-Patent CitationsReference1 *Goodman, Cosmetic Dermatology, pp. 363 to 367, 5/1937.2 *Janistyn, Riechstoffe Seifen Kosmetika, 1950, pp. 228 to 236, 409 & 410.* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS4822602 *Apr 29, 1987Apr 18, 1989The Procter & Gamble CompanyCosmetic sticksUS5000947 *May 30, 1989Mar 19, 1991Moleculon, Inc.Shaped articles containing liquefiable powders for delivery of cosmetic and other personal care agentsUS5368848 *Aug 27, 1992Nov 29, 1994Bristol-Myers Squibb CompanyCosmetic gel stick compositionsUS5597556 *Apr 20, 1995Jan 28, 1997The Mennen CompanyColored bicarbonate containing solid compositionUS5643559 *Mar 4, 1994Jul 1, 1997Colgate-Palmolive CompanyDeodorant compositions comprising inhibitors of odor-producing axillary bacterial exoenzymesUS5650140 *Jul 19, 1995Jul 22, 1997Church & Dwight Co., Inc.Deodorant cosmetic stick productUS5650141 *Sep 13, 1995Jul 22, 1997Church & Dwight Co., Inc.Bicarbonate salt-containing deodorant cosmetic stick productUS5650142 *Sep 27, 1995Jul 22, 1997Church & Dwight Co., Inc.Bicarbonate-containing deodorant cosmetic stick compositionsUS5650143 *May 30, 1996Jul 22, 1997Church & Dwight Co., Inc.Deodorant cosmetic stick compositionUS5676937 *Jun 5, 1995Oct 14, 1997Colgate-Palmolive CompanyDeodorant compositions comprising inhibitors of odor-producing axillary bacterial exoenzymesUS5716604 *Sep 24, 1996Feb 10, 1998The Gillette CompanyClear cosmetic stick composition with 2-methyl-1,3-propanediolUS5798094 *Sep 24, 1996Aug 25, 1998The Gillette CompanyClear cosmetic stick composition with alkali chelateUS5858336 *Oct 10, 1997Jan 12, 1999Avon Products, Inc.Clear stick deodorantUS5863524 *Mar 26, 1997Jan 26, 1999Church & Dwight Co., Inc.Transparent bicarbonate salt containing deodorant cosmetic stick productUS5871720 *Nov 20, 1997Feb 16, 1999Colgate-Palmolive CompanyCosmetic compositions with DBS and functionalized siliconesUS6180125Feb 18, 2000Jan 30, 2001Colgate-Palmolive CompanyLow tack cosmetic composition sticksUS6338841Jul 19, 2001Jan 15, 2002Colgate-Palmolive CompanyAntiperspirant product with dibenzylidene sorbitol and elastomer in dimethiconeEP2218438A1Jan 15, 2010Aug 18, 2010L'Or�alSolid deodorant composition comprising fatty acid salts and ethoxylated fatty alcohol; stabilisation methodWO1997003636A1 *Jul 2, 1996Feb 6, 1997Church & Dwight Company, Inc.Deodorant cosmetic stick productWO1997009959A1 *Aug 22, 1996Mar 20, 1997Church & Dwight Company, Inc.Bicarbonate salt-containing deodorant cosmetic stick productWO1997011671A1 *Jul 18, 1996Apr 3, 1997Church & Dwight Company, Inc.Bicarbonate-containing deodorant cosmetic stick compositionsWO1997015270A1 *Aug 19, 1996May 1, 1997Church & Dwight Company, Inc.Anhydrous cosmetic product containing deodorant and desiccant ingredientsWO1997045093A1 *Mar 25, 1997Dec 4, 1997Church & Dwight Company, Inc.Deodorant cosmetic stick composition* Cited by examinerClassifications U.S. Classification424/65, 424/DIG.5Cooperative ClassificationY10S424/05, A61K8/19, A61K8/0229, A61Q15/00, A61K8/361, A61K8/042European ClassificationA61K8/02M4, A61K8/19, A61K8/36C, A61Q15/00, A61K8/04ARotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services