JPS5849596B2 - Powdered shampoo - Google Patents

Description

Detailed Description of the Invention The present invention provides a powder that is stable without causing pasting or caking during long-term storage, easily disperses and dissolves in water, and that exhibits good cleaning and deodorizing effects without irritating the skin. Regarding shampoo.

Conventionally, powdered shampoos have been made using soap powder or synthetic detergent as the main ingredient, mixed with natural deodorizing agents such as acid clay or silica, or synthetic deodorizing agents such as glyoxal, malic acid, and fumaric acid. There are shampoos available on the market, but
A number of drawbacks have been pointed out, including the tendency to cause caking and pasting during long-term storage, irritation of the skin during use, and low foaming cleaning and deodorizing effects. Improvements are requested.

As a result of intensive research aimed at improving all of the above-mentioned drawbacks, the inventor of the present invention has found that a powdered shampoo containing a specific amount of uniformly mixed zinc sebacate fine powder, a specific polyol described below, and a higher alcohol sulfate ester alkali metal powder has a long-lasting effect. It has been found that the composition is stable during storage, dissolves smoothly and easily during use, and exhibits good cleaning and deodorizing effects without irritating the skin, and the present invention has been brought to fruition.

The purpose of the present invention is to be stable without causing caking even when stored for a long period of time, to maintain a powder form, to be smoothly and easily dispersed during use without forming into a paste, and to have good cleaning effects and deodorization. To provide a powdered shampoo that can exhibit sufficient effects.

That is, the present invention uses fine powder of zinc sebacate as the main component of 1 to 10% by weight (based on the total amount of the formulation), and a polyol selected from the group consisting of propylene glycol, 1,3-butanediol, and glycerin. 1 to 10% by weight of at least one (based on the total amount of the formulation) and 77 to 95% by weight of a higher alcohol sulfate ester alkali metal salt (based on the total amount of the formulation).
(based on the total amount of the prescription).

Embodiments of the present invention will be explained in detail below.

? The zinc sebacate fine powder used in the invention has a maximum particle size of 1
Preferably, the particle size is 0 micron or less and the average particle size is 2 micron or less.

(The particle size referred to in X is the average particle size determined from the sedimentation particle size distribution of zinc sebacate fine particles separated by Suihi (hydraulic classification).

) If the average particle size is larger than 2 microns, or if the average particle size is larger than 2 microns, the cleaning effect, texture, and deodorizing effect tend to decrease.

The blending amount of zinc sebacate fine powder (hereinafter referred to as mixing amount) is 1 to 1% per total amount of the prescription (hereinafter referred to as total composition amount).
0 weight, preferably 3 to 7 weight.

Even if it is less than 1 weight or more than 10 weight, the cleaning effect, skin softening effect, and deodorizing effect are likely to decrease.

The polyol used in the present invention is propylene glycol, (1), 3-butanediol, and glycerin, and the amount of at least one of them used is 1 to 1% based on the total amount of the composition.
0 weight rice cake, preferably 3 to 7 weight ratio.

If the amount is less than 1 weight, the long-term storage stability, cleaning effect, and mildness of the composition will deteriorate, and the powder will easily scatter during use.

If the amount exceeds 10 weight buns, the kumikaimono will become paste-like and will be difficult to disperse in water or hot water, and the cleaning effect, deodorizing effect, and mildness will tend to decrease.

This excellent action and effect can only be exhibited with the above-mentioned specific polyol, and for example, analogous polyols such as sorbitol and mannitol are not effective.

The higher alcohol sulfate ester alkali metal salt used in the present invention has the general formula ROSO3M (In the above formula, R is an alkyl group or alkenyl group having 10 to 18 carbon atoms, and M is sodium or potassium.

Compounds represented by are preferred.

Among these compounds, for example, sodium salts and potassium salts of lauryl alcohol sulfate, myristyl alcohol sulfate, palmityl alcohol sulfate, stearyl alcohol sulfate, and oleyl alcohol sulfate are particularly preferred.

Higher alcohol sulfate ester alkali metal salts are used alone or in combination, and the mixing amount is preferably 77 to 95 weight φ based on the weight of the composition. is 80~90 weightφ
It is.

When it is less than 77 weight rice cakes, the cleaning effect and foaming property are reduced, and when it is more than 95 weight rice cakes, the deodorizing effect tends to be reduced.

The powdered shampoo of the present invention is produced by uniformly mixing zinc sebacate fine powder and higher alcohol sulfate ester alkali metal salt, and then gradually adding and mixing the polyol to the mixture, and then adding fragrance, preservatives, etc. Manufactured by adding necessary additives and mixing thoroughly.

The powder shampoo of the present invention is in the form of a fine white powder, and is extremely stable without causing caking even when stored for a long period of time. A product that blends smoothly and easily, disperses and dissolves uniformly, has high foaming properties, and exhibits a good cleaning effect, mildness, and deodorizing effect without irritation to hair, skin, etc. It is of high value.

Examples of the present invention will be described below.

Note that "parts" means "parts by weight," and "parts by weight."

Example 1 (1) Precepts of the powdered shampoo of the present invention 1. Zinc sebacate 7.0 parts (maximum particle size 3 microns, average particle size 0.5 microns)2. Coconut oil higher alcohol sulfate ester sodium salt
87.0 part 3, propylene glycol
5.0 copies4. Fragrance: Appropriate amount 5. Methylparaben (preservative) 0.1 part ioo part in total (2) Preparation of powdered shampoo Zinc sehacate fine powder and sodium coconut fatty alcohol sulfate are thoroughly mixed, then propylene glycol is gradually added and mixed well.

Thereafter, methylparaben was dissolved in the perfume and gradually added to the mixture and mixed thoroughly to produce the powdered shampoo of the present invention.

(3) Comparative Example Powdered Shampoo■ Comparative Example 1 is the same as the present invention except that zinc azelate fine powder (maximum particle size 3 microns, average particle size 0.5 microns) is used instead of zinc sebacate. I went to

(2) Comparative Example 2 was carried out in the same manner as in the present invention except that acid clay was used instead of zinc sebacate.

(2) Comparative Example 3 was carried out in the same manner as in the present invention except that sorbitol was used instead of propylene glycol.

(2) Comparative Example 4 was carried out in the same manner as in the present invention except that coconut oil fatty acid sodium salt powder was used instead of coconut oil fatty alcohol sodium sulfate salt.

(4) Next, the storage stability, appearance, and sensory tests (cleansability, mild deodorizing effect) of the powdered shampoos of the present invention and comparative examples were examined.

The results are shown in Table I.

In addition, the storage stability in Table 1 is -10'C for 2 weeks at 45°C.
When stored in a constant temperature room for 6 months in a 2-week cycle, if the color did not change or it did not become pasty, it was considered stable, and if it changed color or became paste-like, it was considered unstable.

The sensory test was conducted with a panel of 20 women, and the number is the number of people who answered that the product was good.

As is clear from these results, the powdered shampoo of the present invention is significantly superior in storage stability, detergency, deodorizing effect, mildness, and other organoleptic properties compared to the powdered shampoo of the comparative example.

Further, even if similar components are used in place of the constituent components of the present invention, a good powder shampoo cannot be obtained.

Example 2 The same procedure as in Example 1 of the present invention was carried out except that the content of zinc sebacate was changed as shown in Table 2.

The results are shown in Table 2.

As is clear from this result, the content of zinc sebacate is 1 to 10% by weight, preferably 3 to 7% by weight.

Example 3 Yodo
The same procedure as in Example 1 of the present invention was carried out except that the content of propylene glycol was changed as shown in Table 3.

The results are shown in Table 3. As is clear from these results, the content of propylene glycol is 1 to 10% by weight, preferably 3 to 7% by weight.

Example 4 The same procedure as in Example 1 was conducted except that 1,3-butanediol and glycerin were used instead of propylene glycol.

The obtained powdered shampoos were all white powders, and were stable in storage after 6 months, with 18 and 17 people having good deodorizing effects, and 19 and 18 people having good cleaning effects, respectively.
18 people had good mildness and 17 people had good taste.

Example 5 The same procedure as in Example 1 was carried out except that the alkali metal salt of higher alcohol sulfate ester shown in Table 4 was used instead of the sodium salt of coconut oil higher alcohol sulfate ester.

Claims (1)

[Claims] 1. Fine powder of zinc sebacate as the main component.
~10% by weight (based on the total amount of the formulation), 1 to 10% by weight (based on the total amount of the formulation) of at least one polyol selected from the group consisting of propylene glycol, ■, 3-butanediol, and chrycerin, and higher alcohol sulfuric acid. A powdered shampoo containing 77 to 95 parts by weight (based on the total amount of the prescription) of an ester alkali metal salt. 2. The powder shampoo according to claim 1, wherein the fine powder of zinc sebacate has a maximum particle size of 10 microns or less and an average particle size of 2 microns or less. 3. The powder shampoo according to claim 1, wherein the fine powder of zinc sebacate is blended in an amount of 3 to 7 weight φ based on the total amount of the formulation. 4. The powdered shampoo according to claim 1, wherein at least one polyol is blended in an amount of 3 to 7 by weight based on the total amount of the formulation. 5 The higher alcohol sulfate ester alkali metal salt is at least one of the compounds represented by the general formula ROS03M (in the above formula, R is an alkyl group or alkenyl group having 10 to 18 carbon atoms, and M is sodium or potassium). The powdered shampoo according to claim 1, which is