JPS635008B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a novel composition for dyeing human hair. More particularly, the invention relates to said dyeing composition comprising a bismuth salt and a catalyst component. In the cosmetics industry, pigments have been used in various forms, primarily for the coloring of human hair. For such applications, the use is subject to considerations such as human safety, exposure to highly toxic substances, and other possible adverse effects on the user's skin or hair tissue. Many restrictions have been placed on dye systems. Traditionally, bismuth-containing dye systems have been used for human hair coloring, particularly in applications involving the darkening of gray hair in men and women. In this field of use of bismuth-containing dye systems, various additives and enhancers have been proposed in order to improve the effects achieved. Many dye formulations and dyeing mechanisms have also been reported. Despite the long history of the dyeing industry, there is still no dyeing composition that is completely satisfactory for human hair. Disadvantages of various known hair dyeing compositions include, for example, the relatively low degree of coloration imparted to the treated hair and/or the difficulty in applying the dye to human hair fibers to achieve the desired coloration. The efficiency and ease of use are relatively low. Although considerable efforts have been made to achieve improved dyeing systems for human hair, known means of improving basic hair dyeing methods have generally been only partially successful. Although the methods developed have been helpful in ameliorating one or more of the perceived shortcomings of a given dye system, they often make other properties of the dye system more troublesome or difficult to use on human hair. It did nothing to improve the properties similar to other staining systems that have been developed. The state of the art for various known compositions for dyeing human hair and related materials is illustrated below: Kritchevsky, U.S. Pat. It is disclosed that the organic dye is used to increase the adhesion of the organic dye to human hair. However, no mention is made of the benefits achieved by combining bismuth-containing dyes or such dye systems with the catalyst of the present invention. Seemuller U.S. Patent No. 2,983,651 (5/1961)
No. 9) relates to the dyeing of animal fibers using a direct dye solution in an aqueous organic solvent which is chemically neutral with respect to the dye and the material to be dyed. Then,
Although it is stated that many dyeing systems can be applied according to the invention, no mention is made of the use of bismuth-containing dye systems, which are the subject of the invention. U.S. Patent No. 3075821 (published January 29, 1963)
In order to dye keratin materials, a two-step process is used in which an aqueous solution of cobalt, nickel, copper, zinc, palladium, silver, cadmium or mixtures thereof is applied to keratin fibers and then the fibers are treated with dithio-
The use of a two-step process consisting of treatment with an oxide solution is disclosed. However, there is no indication of the use of bismuth-containing dye systems such as those of the present invention. No. 3,206,363 to Lecher et al. (September 14, 1965)
The use of certain urea alkyl derivatives in dye systems used to dye natural and synthetic polyamide fibers, including living human hair, has been shown to reduce the use of various solvents used in conventional techniques. It is concerned with preventing scalp stains and/or scalp irritation associated with. However, there is no teaching of the use of bismuth-containing dye systems exhibiting the enhanced properties exhibited by the compositions of the present invention. No. 3,402,986 to Zviak et al. (September 1968)
(Announced on the 24th) is a method of dyeing hair using a direct dye dispersed in an aqueous medium containing up to 10% by weight of a water-miscible alcohol selected from colorless and non-toxic alcohols that are chemically inert to the dye and hair. Concerns methods of dyeing at ambient temperature. Tucker U.S. Pat. No. 3,632,290 (January 4, 1972)
(Publication of 1999) relates to compositions for dyeing human hair that involve the use of aryl and alkyl glycol ether mixtures dissolved in an aqueous medium as carriers and solubilizers for normally water-insoluble dyes containing a wide range of pigments. Another U.S. Pat. No. 3,822,112 to Zviak et al. (published July 2, 1974) discloses that an aqueous solution of a direct dye, either an azo dye, a basic dye, or a nitro dye, is prepared in an amount of 0.5 to 8% by weight 2-phenoxyethanol. and 3.5 to 12% by weight of ethyl glycol acetate. Again, no mention is made of the use of the bismuth-containing dye system which is the subject of the invention or of the catalyst components disclosed in the invention. Thus, the dye system or method of the present invention comprises the use of catalysts and bismuth salts that exhibit unique properties to highly desirable enhance the efficacy of dye systems used to treat human hair. The staining method is not mentioned or even suggested in any of the prior art documents listed above. It is therefore an object of the present invention to provide a human hair dyeing composition comprising a bismuth salt and a catalyst component, which provides a significant improvement in human hair coloring efficacy compared to similar hair dyeing compositions of the prior art. The goal is to provide the following. Another object of the present invention is to provide a composition comprising a bismuth salt and a catalyst component that achieves the desired degree of human hair coloration in a shorter time than previously expected using bismuth-containing dye systems similar to conventional methods. An object of the present invention is to provide a hair dyeing method using the same. These and other objects of the invention will become apparent from the detailed description below. Briefly, according to the present invention, there is provided a hair dyeing composition comprising a bismuth salt and a catalyst having a chemical structure containing either an oxygen atom having a resonant double bond or an oxygen atom of an ether group bonded to a carbon atom. A composition is provided, characterized in that the catalyst used has a high solubility in water and a molecular weight of about 50-170. The present invention also provides a novel human hair dyeing composition comprising a bismuth salt and a catalyst component mixed with a composition comprising triethanolamine, at least one sulfur-containing component, Triton X100, and water. . When using bismuth-containing dye systems to color human hair, they must have a chemical structure containing either an oxygen atom with a resonant double bond or an oxygen atom of an ether group attached to a carbon atom and have a high susceptibility to water. The incorporation of a catalyst component with solubility and molecular weight of about 50 to 170 greatly contributes to increasing the degree of coloration to be achieved, while reducing the time required to bring the desired degree of coloration to a given hair sample. I found that it also helps. Hair dyeing compositions such as the compositions of the present invention are comprised of compositions that allow bismuth ions to utilize the soluble sulfur ions needed to ultimately deposit on the hair to be treated in the form of bismuth sulfide. Various bismuth salts, such as bismuth citrate, which are insoluble in aqueous solutions, are usually used with triethanolamine and Triton X100 (a wetting agent manufactured by Rohm & Hass).
and various other ingredients including sulfur and sodium thiosulfate. Bismuth sulfide is usually insoluble in aqueous media, making it difficult for its ions to penetrate the hair fibers and form bismuth sulfide molecules there to impart the required degree of coloration. Therefore, when such bismuth sulfide molecules are actually deposited on the hair to be treated, they are generally in the form of bismuth sulfide (mono) with a molecular weight of 241.07, which imparts a gray color to the hair, or in the form of bismuth sulfide (mono), which imparts a gray color to the hair. It is in the form of bismuth trisulfide with a molecular weight of 514.20 that gives it a black color. It is hypothesized that the catalyst components described provide a convenient means by which the negative oxygen of the catalyst can attract positive bismuth ions and the positive carbon of the catalyst can attract negative sulfur ions. The attracted ions, after penetration into the hair fiber and subsequent drying, combine within the fiber to form colored bismuth sulfide or bismuth trisulfide components. The effective coloring of human hair with bismuth-containing dye systems involves a complex interaction of multiple components of the dye system, and the sulfur content necessary for the formation of bismuth sulfide or bismuth trisulfide within the human hair fiber. It was found that the presence of an excess of sulfur ions was required to donate. It has a chemical structure containing either an oxygen atom with a resonant double bond or an oxygen atom of an ether group bonded to a carbon atom, and has high solubility in water and approximately
Catalyst components having a molecular weight of 50 to 170 include N-methyl-2-pyrrolidone, N-cyclohexyl-2-
pyrrolidone, butyrolactone, carbitol,
It may be selected from the group consisting of 1,4-dioxane and tetrahydrofuran. It has been found that when using a base composition consisting of a soluble bismuth salt dye system and from about 0.5% to about 20% by weight of the previously mentioned ingredients, significant improvements in the coloration imparted to human hair can be achieved. For optimal results, preferably about 10
% by weight of catalyst components are used. Water is also used in an amount of 77.4 to 96.9% by weight based on the total weight of the composition. The following examples are provided to further illustrate the invention:
It is not intended that the invention be limited thereby. EXAMPLES In each example, the following base compositions were used to illustrate the effects of the preferred compositions of the present invention: Table 1 - Base Composition Ingredients Weight % Bismuth Citrate 0.50 Triethanolamine (TEA) 1.00 Sulfur (Sedimentation) 0.50 Sodium thiosulfate 0.50 Triton %, TEA and bismuth citrate were added in continuous mixing. At this point, a blue to purple cloud appeared. Mixing was continued until the powder to be dispersed was no longer visible and was in solution. The mixture was cooled to 40° C. and sodium thiosulfate was added with constant stirring. In a separate container, sulfur Triton X100 10% water
to obtain a slurry. This slurry was then milled for approximately 20 minutes to ensure that it was free of any sulfur lumps. The slurry after pulverization is mixed with bismuth citrate,
The TEA and sodium thiosulfate mixture was added to the mixture with constant stirring, the remaining % water was used to rinse the vessel containing the slurry, and the rinse water was added to the mixture. The catalyst components were then added to the mixture with further stirring. The resulting hair dye composition was applied to various human hair samples for 1 minute and then allowed to dry. Coloration of human hair samples 24 hours after drying was visually evaluated and graded on a scale of 1-10. Here, 1
indicates the results obtained without the catalyst component in the base composition of Table 1, and 10 represents the optimum effect. The 24 hour wait for this color comparison was due to the gradual darkening that occurred as observed in Example XX. Examples ~XII The basic composition shown in Table 1, which does not contain a catalyst component, and various other components to illustrate the relative effectiveness as a catalyst in the hair dyeing composition of the present invention.
10% by weight was used to treat various human hair samples. Table 2 lists the various catalyst components tried and also the relative color rating results on a scale of 1 to 10 comparing samples dyed using the above procedure and 24 hours after dyeing to a control.

[Table]
Examples ~ In order to demonstrate the criticality of the various characteristics of the hair dyeing compositions of the invention, several dyeing formulations were
Prepared and evaluated according to the procedure described above. Table 3 lists each composition and the relative grading obtained after application to each human hair sample to be treated.

[Table] Amine

TABLE The above results illustrate that catalyst components such as urea having a carbonyl attached to the nitrogen atom are ineffective in the dye system of the present invention. Similarly, the presence of elemental sulfur in the dyeing system is critical for effective formation of bismuth sulfide. Also,
The use of other heavy metal salts such as lead acetate is also ineffective;
Thus, it has been found useful and advantageous to have bismuth salts as catalyst components rather than lead salts. Example ~ To illustrate the range of amounts of catalyst components that should be used in the bismuth salt dye systems of the compositions listed in Table 1, based on the basic composition, only the specific catalyst components used and the weight percentages are varied (remaining amounts are Several formulations were prepared by adding enough water to make a total of 100%. These formulations were evaluated according to the procedure described above. Catalyst components used (wt%) and relative color ratings evaluated on a scale of 1 to 10 are shown in Tables 4, 5 and 6.
Published on.

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[Table] Although the formulation used in the above example uses elemental sulfur and sodium thiosulfate, elemental sulfur alone, other thiosulfates such as potassium thiosulfate, or mixtures thereof may also be effective in the present method. This can help provide the sulfur ions needed to target the target. Similarly, TEA has been used as a complexing agent;
Other similar complexing agents may also be used effectively, including ammonia hydroxide. Although the invention has been described with respect to particular embodiments, it will be apparent to those skilled in the art that certain changes and modifications can be made without departing from the scope of the invention.

Claims (1)

[Scope of Claims] 1. A dyeing composition comprising (a) a bismuth salt, (b) a sulfur source, (c) a complexing agent, and (d) a conventional additive or processing aid as an optional component, (e) N-methyl-2
-pyrrolidone, N-cyclohexyl-2-pyrrolidone, butyrolactone, carbitol, 1,4-
A dyeing composition suitable for coloring human hair, characterized in that a catalyst selected from dioxane and tetrahydrofuran is present. 2 Catalyst (e) is approximately
characterized in that it is present in an amount of 0.5-20% by weight,
A dyeing composition according to claim 1. 3. Dyeing composition according to claim 2, characterized in that catalyst (e) is present in an amount of about 10% by weight, based on the total weight of the composition. 4. The dyeing composition according to any one of claims 1 to 3, wherein the complexing agent (c) is triethanolamine. 5. The dyeing composition according to any one of claims 1 to 4, characterized in that a wetting agent (f) Triton X100 (registered trademark) is present. 6. Dyeing composition according to any one of claims 1 to 5, characterized in that at least one of the sulfur sources is elemental sulfur and/or thiosulfate. 7 Water (g) is 77.4 to 77.4 g based on the total weight of the composition.
Dyeing composition according to any one of claims 1 to 6, characterized in that it is present in an amount of 96.9% by weight. 8 Bismuth salt 0.5% Catalyst 10.0% Triethanolamine 1.0% Sulfur 0.5% Sodium thiosulfate 0.5% Triton The composition according to claim 1, wherein the composition is