JPS5852208A - Cosmetic - Google Patents

Abstract

PURPOSE:A cosmetic, prepared by incorporating stable ultramarine particles in which a zinc compound as a surface sulfur is sealed with a zinc compound as a surface sulfur sealing agent therein, and having excellent acid and heat resistance and remarkable stability. CONSTITUTION:A cosmetic prepared by incorporating stable ultramarine particles in which the surface sulfur is sealed with a zinc compound, e.g. zinc chloride, zinc hydroxide, zinc oxide, zinc sulfate, zinc nitrate, zinc acetate or zinc citrate, therein. The zinc compound is used in an amount of about 0.1-20wt%, preferably 2-8wt%, based on the ultramarine, and expressed in terms of zinc to stabilize the ultramarine. USE:Detergents, e.g. soap, cosmetics, e.g. cream, lotion, pack, face powder, talcum powder, foundation, rouge, cosmetic for nail and eye, sun screen cosmetic, deodorant cosmetic, hairdressing agent, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cosmetic containing a stable ultramarine blue, and more particularly to a cosmetic containing a new stable ultramarine blue in which the surface sulfur of ultramarine particles is blocked with a zinc compound.

Group 11 (Gunsho) is an inorganic pigment that usually exhibits a beautiful blue color with a slight reddish tinge, and was originally made from natural lapis lazuli, but now it is mostly manufactured artificially.

Ultramarine is a sodium aluminum silicate containing sulfur, and generally has the following compositional formula:
It is stable up to 50°C and has ion exchange and catalytic abilities. Some of the sulfur in ultramarine is in the active radical form,
Differences in the state of these sulfur radicals and the state of oxidation cause changes in the color tone of ultramarine, and in addition to the reddish blue mentioned above, there are also purple-tinged and green-tinged ones.

Ultramarine blue is used as a blue coloring agent in cosmetics, and has been gaining importance in recent years because its hue is extremely clear and it is harmless to humans and animals.

However, ultramarine blue has a serious defect as a coloring agent. In other words, ultramarine blue is generally stable against alkalis, but extremely weak against acids. When ultramarine blue is added to acidic cosmetics, it reacts with acids. It gradually decomposes and discolors while producing hydrogen sulfide. Furthermore, even when blended into cosmetics with a relatively high pH, hydrogen sulfide is generated by mechanical shearing force and heat.

The hydrogen sulfide thus generated causes problems such as secondary deterioration of container materials such as aluminum, and discoloration and odor of cosmetics.

In order to overcome these drawbacks, several proposals have been made to improve the stability of the group 11t.

Recent methods include, for example, a method of treating ultramarine blue with silicate) and an organic acid to form amorphous silica on the surface (Japanese Patent Application Laid-open No. 1983-95632), and a method of forming amorphous silica on the surface of ultramarine blue with acid-resistant Method of forming a coalescing film
27483), etc. Although these conventional methods improve the acid resistance of ultramarine blue to some extent, they are still not sufficient.

In view of the above circumstances, the present inventors have conducted intensive research to develop a stable ultramarine blue that has sufficient acid resistance when incorporated into cosmetics. After learning of the fact that the generation of hydrogen sulfide is effectively suppressed under acidic conditions, we conducted further investigation and unexpectedly discovered that treatment with a zinc compound alone had a significant suppressive effect. In other words, the present invention provides a cosmetic containing stable ultramarine blue.

In the stable ultramarine blue used in the present invention, the surface sulfur of the ultramarine particles is blocked with zinc salt, and this can be confirmed by ESn (electron spin resonance). This refers to radical sulfur, which, unlike sulfur (including radical sulfur) that exists inside the crystal lattice, tends to have various types of activity toward other substances. This active surface sulfur decomposes under the action of acid, heat, and mechanical shearing force and generates hydrogen sulfide, but when the surface sulfur combines with zinc compounds and becomes sequestered, the ultramarine is stabilized. Decomposition does not occur even when an acid or the like acts on it, and the generation of hydrogen sulfide is suppressed. However, even if the surface sulfur is blocked, there is no change in the original characteristics of ultramarine, and there is no difference in color tone, basic structure, etc. between stabilized ultramarine and untreated ultramarine.

The stable ultramarine used in the present invention is a powder, and its particle size is not particularly limited, but it is usually 0.1 to 1μ, preferably blue, 0.3 to 2μ, and reddish blue. It is 2 to 10μ. The zinc compound that sequesters the surface sulfur sulfur is the same as that used in the treatment, and it does not matter whether it is inorganic or organic as long as it achieves the purpose of stabilization. Zinc complexes can also be included in such zinc compounds.

For example, zinc chloride, zinc hydroxide, zinc oxide, zinc sulfate,
One or more of zinc nitrate, zinc acetate, zinc citrate, etc. can be used.

However, some or all of the zinc compounds may change during the treatment process; for example, zinc chloride partially changes to zinc hydroxide in the presence of caustic alkali, and this substance changes to zinc oxide when fired. 7. The amount of zinc compounds present in the stable ultramarine blue used in the present invention can be determined as appropriate from a practical standpoint.
Preferably it is 2 to 8% by weight. If α is less than 1% by weight, effective stability cannot be imparted to the ultramarine blue, and conversely, if the weighting amount exceeds %, the original color tone of the ultramarine blue will be impaired. Although surface sulfur can be blocked only by the zinc compound, if desired, an appropriate amount of alkali silicate or polymeric substance may be present. Examples of such polymeric substances include water-soluble or water-insoluble substances, such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol, polyvinylpyridone, polyamide, polyvinyl acetate, and polyacrylic acid ester.

The stable ultramarine blue used in the present invention may be in any form as long as the surface sulfur of the ultramarine particles is blocked with a zinc compound. Therefore, approximately the surface sulfur content of ultramarine particles, whether in isolated powder form, dispersion in an aqueous medium, or mixture with other substances, is If ultramarine that has been blocked and stabilized with a zinc compound exists, it is still the object of ultramarine that can be used in the present invention.

The starting ultramarine blue used for producing the stable ultramarine used in the present invention is a powder, and a sufficiently pulverized fine powder is preferable. Generally, particles having a particle size of 0.1 to 20 μm are used.

Zinc compounds are used as surface sulfur sequestrants, and as mentioned above, zinc chloride, zinc hydroxide, zinc oxide, zinc sulfate/zinc nitrate, zinc acetate, zinc citrate, etc. can be mentioned. One or more of these can be used.

(Left below) Such ultramarine powder is dispersed in an aqueous medium and treated with a zinc compound. The typical aqueous medium is water,
An appropriate amount of other aqueous solvents, such as ethyl alcohol, acetone, etc., may be added thereto as appropriate. Usually about 1 to 10 times the amount of ultramarine, preferably about 4 to 10 times
Add 6 times the amount of aqueous medium and stir well to uniformly disperse and form a slurry. At this time, dispersion can be promoted by adding a dispersant or using ultrasonic waves. The slurry is preferably kept alkaline due to the nature of ultramarine.

The above-mentioned dispersion may be carried out at room temperature, but it can also be carried out at a temperature of about 90°C in view of subsequent processing.

A zinc compound is gradually added to the uniformly dispersed slurry in the form of a solid or an aqueous solution while stirring well. The amount of zinc compound added is approximately 0.01 to 0.00% as zinc to the treated ultramarine.
20% by weight, preferably about 2-8% by weight. Approximately α1
If the weight is less than % by weight, sufficient stability cannot be imparted to the ultramarine blue, and conversely if the weight is less than about % by weight, the original color tone of the ultramarine blue will be impaired. At this time, it is preferable to keep the pH of the slurry alkaline, and particularly when adding the zinc compound as an acidic aqueous solution, the pH is preferably adjusted to the alkaline side using caustic alkali, alkali carbonate, or the like. .

Unless contrary to the purpose of the present invention, alkali silicates, water-soluble polymeric substances such as polyvinyl alcohol, acrylic acid, polyethylene glycol, polyvinylpyrrolidone, etc., and water-insoluble polymeric substances such as polyamide, polyvinyl acetate, polyvinyl pyrrolidone, etc. One or more types of acrylic esters may be used in combination.

After treatment with a zinc compound, optionally decanting to remove water, p separation and drying in a conventional manner to obtain a treated product. The obtained stable ultramarine blue (referred to as "raw material A")
The surface sulfur of ultramarine particles is blocked by zinc compounds,
High stability against acids, heat, and mechanical shear forces.

When the raw material A thus obtained is fired, it produces fired ultramarine (referred to as "raw material B") with extremely high stability, in which the active surface sulfur is sequestered, and as a result of the formation, the particle surface is coated with zinc oxide. The stability against acids, heat, and mechanical shearing forces is further improved.The firing temperature is approximately 110°C.
At 250°C1, particularly preferably at about 200°C, about 0
It is carried out over a period of 5 to 211 hours, particularly preferably about 3 to 7 hours. As for raw material B of fired ultramarine, as mentioned above,
Although the particle surface is coated with zinc oxide, no matter what kind of zinc compound is used in the initial treatment, as long as the treatment is performed on the alkaline side, the particles will essentially become zinc oxide after firing.

In this way, the stability of the raw material B is further improved by passing through the firing process. In addition, if raw material B is further dispersed in water and then dried at temperatures ranging from fishing temperature to 105°C to a certain water content state, and then soaked with water appropriately, it has extremely high stability against heat and mechanical shearing force. Ultramarine blue (referred to as "raw material C") is obtained.

To obtain raw material C, approximately 3 to 6
Add twice the amount of water and stir thoroughly to disperse it evenly, then
Dry in the usual way. The raw material C obtained by drying at about 105°C contains about 2% by weight of water and exhibits extremely good water dispersibility.

Furthermore, in addition to manufacturing in the aqueous medium described above, it can also be obtained by uniformly mixing a zinc compound with ultramarine blue and firing the mixture.

(The following is a blank space) Next, a production example of stable ultramarine blue used in the present invention will be specifically listed, but the present invention is not limited thereto.

Production Example 1 100 parts of ultramarine blue powder was gradually added to the above slurry while stirring the aqueous solution into 500 parts of water. During addition, the pH of the slurry was adjusted to 8 to 10.

After stirring for 2 hours, the palm shavings and the treated product were washed twice with water, then filtered and dried to obtain 105 parts of stable ultramarine blue.

ESR (Electron Spin Resonance) of the obtained stable ultramarine blue
These findings confirmed that the surface sulfur of the ultramarine particles was sequestered by zinc compounds. In other words, when the ESR spectrum of untreated ultramarine was measured at room temperature, the intensity value was 2.
A broad and high radical sulfur peak was detected near 029. On the other hand, in the stable treatment group U, a radical sulfur peak having a negative magnitude in the spectrum measured with untreated ultramarine was observed at the same position. The decrease in the magnitude of the q peak indicates that the surface radical sulfur is blocked by the zinc compound in the stable ultramarine blue of the present invention.

The ultramarine blue obtained here is stable, and the results of the hydrogen sulfide detection method and silver plate blackening test described below indicate that it is 7I.
It was extremely superior in acid resistance and heat resistance compared to untreated products.

A stable ultramarine blue was obtained by carrying out the same washing operation as in Production Example 1 under the conditions listed in the table below.

Production Example 6 108 parts of stable ultramarine was obtained in the same manner as in Production Example 1 (2), except that 8 parts of zinc chloride and 5 parts of IJium silicate were used instead of zinc geochloride.

Production Example 7 100 parts of the stable ultramarine blue obtained in Production Example 1 was fired at 200°C for 5 hours to obtain 98 parts of extremely stable ultramarine blue (raw material B).

This product had adsorption ability and its surface was coated with zinc oxide. The ultramarine blue obtained here was stable and had extremely excellent acid resistance, as shown by the results of the hydrogen sulfide detection method described below.

Production Example 8 100 parts of the acid-resistant ultramarine (raw material B) obtained in Production Example 7 was dispersed in 300 parts of water, and then the mixture was heated at 105°C.
was dried to obtain 102 parts of the target product (0 raw materials).

The surface of raw material C is coated with zinc oxide, and this material is stable and has extremely good water dispersibility.In particular, as shown by the results of the hydrogen sulfide detection method described below, it has extremely excellent acid resistance. Ta.

Production Example 9 Add 4 parts of zinc oxide to 100 parts of ultramarine powder and mill with a vibration mill.
Mix uniformly for 5 hours, then mix the mixture for 200
Stable group a (raw material D) after firing for 5 hours at ``C'' 10
I got 0 copies.

The n-blue thus obtained was stable and, as shown by the results of the hydrogen sulfide detection method described below, had excellent acid resistance.

(Left below) The stability of ultramarine blue was evaluated based on the results of the hydrogen sulfide detection method for acid resistance and the silver plate blackening test method for heat resistance.

[Test method]

(1) Hydrogen sulfide detection method Attach a simple gas detection tube, connect the detection tube to a water pump, and always suck the generated hydrogen sulfide gas at a constant pressure. A scale is printed directly on the gas detection tube, so that hydrogen sulfide ht can be directly read.

Measurement is performed using this measuring device in the following manner. Place ultramarine 05 in a three-neck bottom flask and uniformly disperse it in 54 ion exchange water. Next, pour IN salt #5 through the funnel.
- Add all at once and stir with a stirrer. Amount of hydrogen sulfide generated when ultramarine is dispersed by acid (C%)
is read with a detector tube.

(2) Silver plate blackening test method Ultramarine blue and silver plates are left at AO for 2 days in a closed container, and the extent to which the silver plate blackens due to the hydrogen sulfide generated during that time is observed with the naked eye. (Blank) The color of the silver plate is 0, the overall blackening in the case of untreated ultramarine is 5, and the degree of blackening is rated in the range of 0 to 5.

(Results and Evaluation) (1) The results of the hydrogen sulfide detection method did not reach the volume % as shown in Figure 1, and raw material B of Production Example 7 and Production Example 8
For raw material C, it is only about 0.2% by volume, and it may be
With raw material A-0, no hydrogen sulfide was generated after 2 minutes.On the other hand, with untreated or sodium silicate treated ultramarine, hydrogen sulfide was rapidly generated, and the amount detected after 2 minutes was The amount was about 1.5% by volume, and the detector tube reached 20% of its full scale in less than 4 minutes.

According to the above results, it can be seen that the stable ultramarine used in the present invention is extremely superior in acid resistance compared to raw materials A-D that are untreated and those treated with 5% Thai city soda. .

(2) Production of the present invention in silver plate blackening test.

The ultramarine blue obtained in Example 1 received a rating of 0 (no change), while the untreated ultramarine blue received a rating of 5 (full blackening). According to these results, it can be seen that the raw materials used in the present invention are extremely excellent in heat resistance.

Taking all of the above into account, it is clear that all of the raw materials used in the present invention are extremely superior in acid resistance and heat resistance, and therefore have remarkable stability, compared to conventional ultramarine blue.

In the present invention, the above-mentioned stable ultramarine blue is blended into various cosmetics as conventional cosmetic powders, such as blushers, nail cosmetics, eye cosmetics, sunscreens, cosmetics, deodorant cosmetics, Examples include hair styling products, etc. ◇The blending amount is arbitrarily selected within the range of the amount generally used as a powder.

All of the obtained cosmetics had excellent stability.

Next, the present invention will be explained with reference to Examples, but the present invention is not limited thereto. Formulations indicate parts by weight.

(Left below) Example 1 Vaseline 7 Cetyl alcohol 2 Liquid paraffin
15 squalane
lO glycerin mo/stearin ester (self-emulsifying type) zO polyoxyethylene (2:1 mol)
Cetyl Alcohol Ether 20 Glycerin Propylene Glycol 5 Jyo Co., Ltd.
water
5QO Invention Ultramarine (Production Example 1)
0.2 iron oxide (yellow)
Titanium oxide for α 1° protection
preservative
Appropriate amount of antioxidant Appropriate amount of fragrance
o5 Production method Ultramarine, iron oxide, and titanium dioxide are mixed with propylene glycol and glycerin, mixed with purified water, heated, and kept at 70°C (water phase). Mix the oily components, heat and melt and keep at 70°C (oil phase). Add the oil phase to the water phase and homogeneously emulsify it with a homomixer.
The mixture was cooled to obtain a cream.

Comparative Example 1 The ultramarine of the present invention in Example 1 was more stable than the conventional commercially available ultramarine, whereas the ream of Comparative Example 1 showed irregularities and discoloration.

Further, 5.0 g of the cosmetics of Example 1 and Comparative Example 1 are placed in a three-necked round-bottomed flask, and the flask is uniformly dispersed in ion-exchanged water. Then 0.5Nm #10 from the funnel
- are added all at once and stirred with a magnetic stirrer. Using the same test method and the same equipment as described above, the amount of hydrogen sulfide generated when ultramarine blue is decomposed by acid was read using a detection tube, and the results are shown in Figure 2.

As is clear from FIG. 2, the cosmetic composition using the ultramarine blue of the present invention has excellent market stability.

In addition, in the results of the silver plate blackening test, Example 1
The cosmetic of Comparative Example 1 was 4, while the cosmetic of Comparative Example 1 was 0.
It is clear that the cosmetic composition using the ultramarine of the present invention has excellent thermal stability.

(Left below) Example 2 Kaolin 3α0 mica
1a□Iron oxide (black)2.
5 Ultramarine blue of the present invention (Production Example 1) 220 bar pigment 19. Q Glyceryl tri2-ethylhexane ester 2゜Squalane 5゜Glyceryl monostearate O5 preservative
Suitable h1 fragrance
Immediate manufacturing method Pigments other than Nivar pigment are mixed and ground, and then Var pigment is mixed. Add other premixed and melted ingredients,
It was compressed and molded into a solid powder to obtain a solid powder eye shadow. The obtained 4-ish do was a stable eye shadow with no odor or discoloration, and was still stable even in a test over time.

Example 3 Iron oxide (black) l.

Gunjo of the present invention (manufacturing example?) 13.0
Talc IQO Titanium Dioxide z.

Mica 5° bar pigment 13.0 carnauba wax 20 minwax 4° solid paraffin 10.0 squalane 21.0 glyceryl tri2-ethylhexane ester 19.0 sorbitan sesquioleate ester/I/l.

Preservatives Appropriate amount Flavoring

a Part method: iii Part of squalane and sorbitan sesquiolein ester are added to iron chloride, ultramarine of the present invention, talc, titanium dioxide, mica, and Burr pigment, and processed in a Floyd mill (oblique part M). The other ingredients are mixed, heated and dissolved, and the pigment part is added to this and uniformly dispersed using a homomixer. After dispersion, it was poured into a mold and rapidly cooled to obtain a snack-type eyeshadow. The eye shadow was a stable eye shadow with no odor or discoloration. It was also stable over time.

Example 4 Ultramarine of the present invention (Production Example 8) 185 iron oxide (black) o5 Hinyl acetate resin emulsion (<to ”/, )
4o,0 carboxymethyl cellulose 15
．． Q (10% aqueous solution) Glycerin 605ψi? Water change 1 Polyoxyethylene (Wamol) Sorbitan monooleate 1.0
Preservatives Appropriate amount Flavoring

Ii! 1-quantity manufacturing method: Add glycerin and polyoxyethylene monooleate to purified water, heat and dissolve, then add iron oxide (black) and the ultramarine blue of the present invention and process in a colloid mill (pigment part). Mix other ingredients? Heat to O''C. Pigment part was added to this and uniformly dispersed with a homomixer to obtain an eyeliner. This eyeliner was stable with no odor or discoloration. Also, it did not change over time. Met.

Example 5 Ultramarine of the present invention (Production Example 9), 25.0 Iron oxide (black) 10 Iron oxide (red) 30 Talc 100 Kaolin la.

Mica 14.0 Liquid Paraffin 130 Karna, Parou 50 Polyethylene Glyfur aO Polyoxyethylene (2
J mol) Sorbitan monooleate LO Sorbitan sesquioleate 1.0 Preservative Appropriate amount Flavor
Appropriate amount production method 2 Invention: Mix ultramarine, iron oxide, talc, kaolin, and mica well in a kneader (powder part). Add polyethylene glycol and polyoxyethylene sorbitan monooleate to purified water and keep at 70°C (water phase). . Other ingredients except the fragrance are mixed, heated and melted, and kept at 70°C (oil phase). Add the oil phase to the aqueous phase and homogeneously emulsify it using a homomixer. Add this to powder part 1 and knead it using a kneader, then evaporate the water and process it using a pulverizer.Furthermore, while stirring the mixture well, the fragrance is evenly sprayed. This was then compression molded to obtain a solid powder eyeliner.This eyeliner was stable and free from odor and discoloration.

It was also stable over time.

Example 6 Propylene glycol 5゜ethyl alcohol 4゜squalane
15.0 Vaseline 4゜Preparation of the present invention (Production Example 3) 0.05 Purified water
'70.0 polyoxyethylene (2
0 mol) monooleic acid ester 2 preservative
Appropriate amount of fragrance Produced in appropriate amount 1. Knead and refine ultramarine blue with propylene glycol)
. Mix other ingredients, heat to dissolve and keep at 70°C (oil phase). Add the oil phase to the water phase, emulsify with a homomixer, and add the alcohol phase while stirring. A milky lotion was obtained by cooling to 30'C. The obtained emulsion was a stable emulsion with no odor or discoloration. It was also stable in a test over time.

Example 7 Titanium dioxide 10 Kaolin
10 Mica 20 Iron oxide (yellow) 2 Iron oxide (red). 5 Invention ultramarine (
Production example 4) 2 Solid paraffin 5.0 Carnauba wax 20 Squalane
225 Glyceryl tri2-ethylhexanoate 225 Sorbitan sesquioleate
15 Preservatives Appropriate amount Packaging Appropriate amount production: Mix titanium dioxide, kaolin, mica, iron oxide, and ultramarine thoroughly in a blender (powder part).

A part of squalane and sorbitan sesquioleate are added to the powder part, and the mixture is evenly divided using a homomixer, and the other ingredients are heated and dissolved, and then added to this mixture and stirred well. This was poured into a container and cooled to obtain 7 foundations. This foundation film was stable without any odor or discoloration.

Further, it was stable with no change over time.

Example 8 Talc
50 kaolin
20 Titanium dioxide
lO iron oxide (yellow)
1 Ultramarine of the present invention (Production Example 5) 2 Vaseline
2 Squalane
6 Glyceryl tri2-ethylhexanoate 5 Polyoxyethylene (20)
Sorbitan monooleate 05 Sorbitan sesquioleate 15 fragrance
Preservative Preservative Produced in appropriate amount - Thoroughly mix talc, kaolin, titanium dioxide, and iron oxide ultramarine in a kneader (powder part).

Keep purified water at 70°C (aqueous phase). The other ingredients except the fragrance are mixed, heated and dissolved and kept at 70°C (oil phase).

The oil phase is added to the aqueous phase and homogeneously emulsified using a homomixer. This is added to the powder portion and kneaded using a nee-gu, followed by evaporation of water and processing using a pulverizer. Further, while stirring the mixture well, a fragrance was uniformly sprayed and compression molded to obtain a solid white powder. This white powder was a cheap powder that did not change odor or discoloration. Further, it was stable with no change over time.

Example 9 Mica 64 Talc 20 Iron oxide (red) 2-5 Iron oxide (yellow) 05 Ultramarine of the present invention (Production Example 6) 05 Squalane 5 Glyceryl tri-2-ethylhexanoate 5 Sorbitan sesquioleate 1 Fragrance
Appropriate amount of preservatives Appropriate amount production:
While thoroughly stirring the ingredients other than the fragrance with a blender, the fragrance was sprayed uniformly, treated with a pulverizer, and then compression molded to obtain a solid red. This red was stable without any odor or discoloration. It was also stable over time.

(Left below) Example 10 - Nitrocellulose (l/2 seconds) 10 Alkyd resin 1° Acetyltributyl citrate 50 Ethyl acetate
200 vinegar butyl
150 ethyl alcohol
50 toluene 34
．． 0 Lysol Rubin BOA α5 Invention Ultramarine (Production Example 7) 05 Suspension preventive agent Appropriate amount Production method: Add Lysol Rubin BCA, Group 1 to part of the alkyd resin and part of acetyl tributyl citrate and mix well (
pigment department). The other ingredients were mixed and dissolved, the pigment part was added thereto, and the nail enamel was obtained by stirring well and dispersing it uniformly.◇This nail enamel was stable without any odor or discoloration.

In addition, it was stable over time ◇ Example 11 Zinc white 10.0 Ultramarine blue of the present invention (Production example 3) z.

Solid paraffin loO Bieswa, Kusu 24. .

Vaseline 24.0 Liquid paraffin 30.0 Fragrance
Appropriate amount of antioxidant
Appropriate amount manufacturing method: After mixing the ingredients other than zinc white and ultramarine blue and heating and melting, add zinc white and ultramarine blue and uniformly disperse with a homomixer, pour into a mold and rapidly cool to obtain a deodorant stick.

This deodorant stick was stable with no odor or discoloration. Moreover, it remained stable with no change over time.

Example: Vinyl acetate resin emulsion ('ro'/) 1
5.0 Polyvinyl alcohol 10.0
2L olive oil.

Glycerin 50 Titanium dioxide 120 Invention ultramarine (Production Example 9) 1.0 Ethyl alcohol
70 purified water
47.0 Fragrance
Appropriate amount Preservative Appropriate amount Manufacturing method: Moisten polyvinyl alcohol with a portion of ethyl alcohol, add to purified water in which titanium dioxide and ultramarine blue are dispersed.
Heat to 0° and leave overnight, stirring occasionally.

The next day, perfume, preservative, and olive oil dissolved in glycerin, vinyl acetate resin emulsilon, and the remainder of ethyl alcohol were added, and the mixture was stirred to form a uniform paste to obtain a pack. The obtained powder was stable without any odor or discoloration. In addition, titanium dioxide remained stable with no change over time 0°2° Ultramarine of the present invention (Production Example 5) 0.10 Sequestering agent 0.30 Fragrance
1.40 Soap base
98.00 Manufacturing method: Other ingredients were added to the soap base to obtain a molded soap. The obtained soap is
It was stable with no odor or discoloration. Moreover, it remained stable with no change over time.

(Margin below)

[Brief explanation of drawings]

FIG. 1 is a diagram showing the relationship between the amount of hydrogen sulfide detected and the detection location and time in the hydrogen sulfide detection method for stable ultramarine blue used in the present invention and conventional ultramarine blue. It is a figure showing the amount of hydrogen sulfide detected in . Patent applicant: Shiseido Co., Ltd., Figure 1, Chichichisho Sanjisho (Rei)

Claims (1)

[Claims] (1) A cosmetic characterized by containing stable ultramarine blue particles whose surface sulfur is blocked by a zinc compound.