GB1566339A

GB1566339A - Shampoo compositions

Info

Publication number: GB1566339A
Application number: GB1847577A
Authority: GB
Original assignee: Parbel of Florida Inc
Current assignee: Parbel of Florida Inc
Priority date: 1977-04-13
Filing date: 1977-05-03
Publication date: 1980-04-30
Also published as: CH612089A5

Description

(54) SHAMPOO COMPOSITIONS (71) We, HELENA RUBINSTEIN, INC., a Corporation organized and existing under the laws of the State of New York, United States of America, of 300 Park Avenue, New York, State of New York, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to shampoo compositions providing, in one single application, the three effects of shampooing, conditioning the hair, and the effect of an anti-dandruff treatment.

Shampoo compositions utilizing various surfactants are known in the art. Generally, the consumer applies small portions of the shampoo to the hair and works it into a lather with water. Thereafter, the lather is removed by rinsing with water. The detergent action of the surfactants present in these compositions will often times cause the hair to lose its luster and suppleness thereby rendering the hair unruly and unmanageable. Anti-dandruff active ingredients also adversely affect the appearance of the hair. Consequently, to restore the hair to its original luster and suppleness after cleansing with the shampoo, there is required an additional application of a hair conditioning composition. That is to say, a two-step operation, i.e., the cleansing of the hair with the shampoo and of the restoration with a conditioning agent of the hair to its original luster and manageability is needed.

The present invention relates to a single unique composition providing the desired triple action of shampooing, scalp treatment and hair conditioning without settling of the active ingredient.

Accordingly, the invention provides a shampoo-hair conditioning composition which comprises at least one surfactant, an encapsulated hair-conditioning oil, a thickened aqueous vehicle and an anti-dandruff agent. The surfactants are the active ingredients providing the shampooing effect. Suitable surfactants are anionic surfactants such as, for example, triethanolamine lauryl sulfate alone, if desired, in combination with a non-ionic surfactant, such as polyoxyethylene polyoxypropylene polyoxyethylene, and a cationic surface active agent. The aqueous compositions containing these surfactants are thickened by the incorporation therein of thickening agents such as a carboxy vinyl polymer neutralized with a base, preferably in an amount of from 0.10 to 2.5% by weight of the composition. The encapsulated hair conditioning oil incorporated in the composition of the invention gives the composition a hair and scalp conditioning effect. The anti-dandruff active ingredient can be any of the well known scalp treating agents, such as selenium disulfide, coal tar derivatives, pyridine thione derivatives such as zinc Omadine which is the zinc salt of 1-hydroxypyridine-2-thione (2-mercaptopyridine-N-oxide) or sodium or magnesium Omadine, quaternary ammonium compounds, hexachlorophene or other antibacterials. The shampoo-conditioning composition of this invention occurs in the unique form of a clear suspension containing visible capsules of hair conditioning agent.

The thickening agent, such as a carboxy vinyl polymer, serves the secondary purpose of maintaining the active ingredients in suspension.

The compositions of this invention are aqueous in nature. Surfactants, suitably anionic in nature, alone or in combination with non-ionic and cationic surfactants are present usually in an amount of from 5% by weight to 25% by weight of the composition. The precise combination of these surfactants may be varied depending upon the nature of the hair to be treated, the amount of lather desired and the degree of conditioning. That is to say, if the compositions are applied to oily hair, the amount of surfactants may be increased. The treatment, on the other hand, for normal or dry hair requires less surfactants. In short, the amount of the surfactant in the composition varies depending upon the nature of the surfactant chosen and the condition of the hair to be treated. For example, in formulating a shampoo for normal hair, a mixture of about six parts by weight of polyoxyethylene polvoxypropylene polyoxyethylene is used. On the other hand, if oily hair 5 to be treated, the amount of the triethanolamine lauryl sulfate is increased to an amount of about 30% by weight of the composition.

Among the surfactants which may be advantageously employed in the compositions of the present invention, are those disclosed in McCutchen's Handbook of l)etcrgents. One group of surfactants is the non-ionic surfactants which include. for example, condensates of alkvlene oxide as well as groups having an organic hydrophobic compound with an active hydrogen. Suitably. polyoxyethylene sorbitan monostearate can be used. l'he next group of surfactants are the anionic surfactants and illustratively, alkyl benzene sulphonates such as sodium dodecyl sulphonate, primary alkyl sulphates such as. for examplc, triethanolamine lauryl sulfate and also secondary alkyl sulfates such as, for example, diethinolamine lauryl sulfates. The anionic surfactants can be used in amounts varying between 0.5 and 60% usually 2 to 6()0r', preferably 5 to 60%, most preferably 5 to 20%, by weight of the composition. The last group of surfactants are the cationic surfactants and these materials can be used in small amounts. e.g., up to about 3.OC, by weight, of the composition.

Suitably, cationic surfactants such as distearyl dimethyl ammonium chloride, dilauryl dimethyl ammonium chloride and N-cetyl pyridinium bromide, can be used.

To improve the applicability as well as the wettability of the shampoo composition, additives such as, for example. humectants, emollients and chelating agents are included.

Fragrances, coloring materials, preservatives as well as U.V. light absorbers are also added to increase the stability and cosmetic elegance of the composition.

Among the humectants, there may be mentioned. for example, polyhydroxy alcohols such as propylene glycol, glycerine. and the like. and these materials can be used in amounts up to about 15it, or up to about 20%, . by weight of the composition.

Illustrative of the U.V. light absorber used, is, for example, 2,2'-dihydroxy-4-methoxy benzophenone. A small amount, typically, 0.l%-().5% by weight is used. Typical chelating agents are the disodium salt of ethylenediamine tetra acetic acid (EDTA) and citric acid which are known in the art. These materials can be used in amounts up to about 0.7fi/o, or up to about 1%, bv weight of the composition.

Included in the composition, are emollients varying in amount 0.25% to 10%, usually from 0.5% to 5%, by weight of the composition.

The anti-dandruff active ingredient is used in an amount of from 1.00% to 7.500to, by weight of the composition.

In a typical preparation of a composition of the invention, a slurry of the thickening agent for example, a carboxy vinyl polymer, available under the trade name Carbopol 941, is dispersed in a sufficient amount of water by slowly mixing, preferably without aeration and stirred until no lumps remain. To this is added the surfactants along the wall of the vessel to avoid splashing and foaming. Again, the mixing is accomplished without aeration. In a separate vessel, a dispersion of zinc Omadine in water is made and recirculated through a colloid mill. such as the Gifford Wood colloid mill, with the smallest possible clearance between the rotor and the stator. The zinc Omadine dispersion is then added to the Carbopol slurry. The remaining water and chelating agent, such as Sequestrene (Reg.

T.M.) Na2 (di-sodium EDTA). are added to another vessel. With a mixer running, a protective colloid such as Cellosize QP-4400-H (a hydroxy-ethylcellulose modified with a quaternary ammonium cation on approximately every other anhydro glucose unit) is added by sprinkling it on the surface of the dispersion. When the Cellosize is dispersed well, the mixture is heated to about 75"C. for one hour or until the Cellosize (Reg. T.M.) is completelv dissolved. Propylene glycol and NeoFat 255 (a coconut fatty acid blend) are added. The blend is mixed until translucent. Mixing is stopped long enough to allow bubbles to rise to the surface and triethanolamine is added while mixing until crystal clear.

The Cellosize dispersion is slowly added to the Carbopolziuc Omadine mixture and, if lumps are present, homogenized with a Homo-mixer, and then cooled to 40"C. The perfume, preservative (formalin), and coloring are added and mixed until uniform. With reverse mixing the capsules, described more fully hereinbelow. are added. The mixing with the capsules should be gentle.

The compositions of this invention occur in the form of a clear gel with visible capsules of hair conditioning agents suspended therein. In use, the consumer wets the hair and applies 5 to 20 ml. of the composition of this invention onto the hair and works up the lather. After a five to ten minute lathering treatment, the lather is rinsed with water and the hair is dried.

It has been found, following such a treatment that the hair is not only effectively cleansed but also conditioned simultaneouslv.

If a more viscous gel is desired, additional carboxy vinyl polymer may be added alone or in combination with other thickening agents such as hydroxy ethyl cellulose, hydroxy propyl cellulose and so on. The amount of the additional thickening agent to be added is within the purview of those skilled in the art.

In order to illustrate further the practice of the present invention, the following example included: Example 1 Shampoo anti-dandruff compositions were made according to the procedure just discussed having the following composition, in per cent by weight of the total composition: Carbopol 941 0.10-2.5 Standapol TS-100 0.5-60.00 Zinc Omadine (48% aq. disp.) 1.00-7.50 Sequestrene* Na2 0.10-1.00 Cellosize* QP-4400-H 0.10-3.00 Propylene glycol USP 0.50-20.00 Neo-Fat 255 0.25-10.00 Triethanolamine 0.10-5.00 Perfume C- 1901 0.20 Formalin 0.10 FDC Blue 1 (0.2% aq. soln.) 0.70 Blue capsules 0.10-5.00 Deionized water qs. 100% The zinc Omadine remained suspended after standing for days. The composition did not require shaking before use.

The conditioning agents present in the instant compositions are encapsulated oils, the capsules being visible and varying in size from 0.5 mm to 3 mm in diameter. A suitable encapsulated oil is the encapsulated mineral oil, a well known commercially available product produced by National Cash Register Company, the capsules being prepared by the process disclosed in United States Patent 3,341,466 and 3,726,803. Oils other than mineral oil can be used such as, for example, isopropyl myristate, lipid-like oils, fatty acid esters, hydro-carbon oils, and the like. The encapsulated mineral oil is used in amounts of 0.1% to 5%, usually 0. to 2.0%, by weight of the composition. The oil is conveniently encapsulated in gelatin.

* Registered Trade Mark.

WHAT WE CLAIM IS: 1. A shampoo-hair conditioning composition which comprises at least one surfactant, an encapsulated hair-conditioning oil, a thickened aqueous vehicle and an anti-dandruff agent.

2. A composition according to claim 1, which contains 0.5%-60% by weight of an anionic surfactant.

3. A composition according to claim 2, in which there is 5-60% by weight of the anionic surfactant.

4. A composition according to any of claims 1-3, in which the surfactant comprises triethanolamine lauryl sulfate.

5. A composition according to claim 4, in which the surfactant comprises triethanolamine lauryl sulfate and polyoxyethylene polyoxypropylene polyoxyethylene.

6. A composition according to any one of the preceding claims, in which there is 0.1 to 5% by weight of the encapsulated oil.

7. A composition according to claim 6, in which there is 0.2 to 2% by weight of the encapsulated oil.

8. A composition according to any one of the preceding claims, in which the oil is encapsulated in gelatin.

9. A composition according to any one of the preceding claims, wherein the oil is a mineral oil.

10. A composition according to any one of the preceding claims, wherein the thickened aqueous vehicle includes a carboxy vinyl polymer neutralized with a base as the thickener.

11. A composition according to claim 10, in which there is 0.10 to 2.5% by weight of the carboxy vinyl polymer.

12. A composition according to any one of the preceding claims, which contains small amounts of a chelating agent, preservative and fragrance.

13. A composition according to any of the preceding claims, wherein the anti-dandruff

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. but also conditioned simultaneouslv. If a more viscous gel is desired, additional carboxy vinyl polymer may be added alone or in combination with other thickening agents such as hydroxy ethyl cellulose, hydroxy propyl cellulose and so on. The amount of the additional thickening agent to be added is within the purview of those skilled in the art. In order to illustrate further the practice of the present invention, the following example included: Example 1 Shampoo anti-dandruff compositions were made according to the procedure just discussed having the following composition, in per cent by weight of the total composition: Carbopol 941 0.10-2.5 Standapol TS-100 0.5-60.00 Zinc Omadine (48% aq. disp.) 1.00-7.50 Sequestrene* Na2 0.10-1.00 Cellosize* QP-4400-H 0.10-3.00 Propylene glycol USP 0.50-20.00 Neo-Fat 255 0.25-10.00 Triethanolamine 0.10-5.00 Perfume C- 1901 0.20 Formalin 0.10 FDC Blue 1 (0.2% aq. soln.) 0.70 Blue capsules 0.10-5.00 Deionized water qs. 100% The zinc Omadine remained suspended after standing for days. The composition did not require shaking before use. The conditioning agents present in the instant compositions are encapsulated oils, the capsules being visible and varying in size from 0.5 mm to 3 mm in diameter. A suitable encapsulated oil is the encapsulated mineral oil, a well known commercially available product produced by National Cash Register Company, the capsules being prepared by the process disclosed in United States Patent 3,341,466 and 3,726,803. Oils other than mineral oil can be used such as, for example, isopropyl myristate, lipid-like oils, fatty acid esters, hydro-carbon oils, and the like. The encapsulated mineral oil is used in amounts of 0.1% to 5%, usually 0. to 2.0%, by weight of the composition. The oil is conveniently encapsulated in gelatin. * Registered Trade Mark. WHAT WE CLAIM IS:

1. A shampoo-hair conditioning composition which comprises at least one surfactant, an encapsulated hair-conditioning oil, a thickened aqueous vehicle and an anti-dandruff agent.

active ingredient comprise a pyridine thione.

14. A composition according to claim 13, wherein 1-7.5% by weight of the zinc salt of 1-hydroxypyridine-2-thione is used.

15. A composition according to claim 1, which comprises in per cent by weight: a carboxy vinyl polymer 0.10-2.5 triethanolamine lauryl sulfate 0.5-60.00 zinc salt of 1-hydroxypyridine-2-thione (48% aq. disp.)1.00-7.50 disodium ethylene diamine tetra acetic acid 0.10-1.00 hydroxyethyl cellulose 0.10-3.00 propylene glycol USP 0.50-20.00 coconut fatty acid 0.25-10.00 triethanolamine 0.10-5.00 perfume C- 1901 0.20 formalin 0.10 FDC Blue 1 (0.2% aq. soln.) 0.70 gelatin capsules of mineral oil 0.10-5.00 deionized water qs. 100%

16. A shampoo-hair conditioning composition substantially as herein described with reference to the Example.