JPH0813735B2 - Method for producing inorganic pigment for bath salt - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a coated inorganic pigment having improved water dispersibility used in a bath agent having a rich color tone.

[0002]

2. Description of the Related Art It is known that bathing has various effects including the effect of relieving the fatigue of the day and relaxing the mind and body. In order to further enhance the bathing effect, various bathing agents have been developed and put into practical use. Among these, those containing a fragrance or a pigment in order to enhance the psychological effect (relaxation effect) and the like by bathing are included (for example, see Japanese Examined Patent Publication No. 52-21574).

[0003]

As for the colors, it is intended to produce the same psychological effect as that of a hot spring by giving various colors that are not available in Sarayu. There are limitations on the dyes that can be used, and it has been desired to improve the colorants so that more colors can be enjoyed. In particular, in the case of inorganic pigments that are insoluble in water, they are settled within a few minutes even if they are put into bath water and accumulate at the bottom of the bathtub,
On the contrary, there was a problem that the bather was uncomfortable.

[0004]

Means for Solving the Problems As a result of repeated studies to solve such problems, the present inventor has found that by coating an inorganic pigment with a water-soluble polymer and using it as a bath agent, an inorganic pigment is obtained. The color tone unique to the pigment was enjoyed, the dispersibility was good, and the dispersion was stable.

That is, the present invention uses 50 to 300 parts by weight of water.
A water-soluble polymer substance solution in which 50 to 200 parts by weight of the water-soluble polymer substance is dissolved is added to and dispersed in an amount of 50 to 150 parts by weight of an inorganic pigment, and then dried and pulverized to increase the water solubility.
The present invention provides a method for producing a water-soluble polymeric substance-coated inorganic pigment for a bath agent, which comprises coating the inorganic pigment with a molecular substance. The present invention will be described in detail below.

Water-insoluble inorganic pigment used in the present inventionIs cosmetics
Used forWhite pigments and colored pigmentssois there. Former white
Examples of pigments include titanium oxide, zinc oxide (zinc white), acid
Magnesium chloride, calcium carbonate, magnesium carbonate,
Talc etc. can be mentioned. Also, the latter colored pigment
Examples of yellow iron oxide, red iron oxide (Bengara),
Black iron oxide, ultramarine blue, chromium oxide, calamine, etc.
You canOf these, the former white pigment is an example.
Those shown are particularly preferred.

As the water-soluble polymer used in the present invention, any of natural polymer, semi-synthetic polymer and synthetic polymer can be used. Examples of water-soluble natural polymer substances include microbial polysaccharides such as dextrin and xanthen gum; plant polysaccharides such as carrageenan, agar, and mannan; animal proteins such as gelatin, casein, albumin, and collagen. Can be mentioned.

Examples of water-soluble semi-synthetic polymeric substances include methyl cellulose, ethyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose,
Examples include celluloses such as hydroxyethylcellulose, starches such as soluble starch and methyl starch, and alginic acids such as alginates and propylene glycol alginate. Examples of synthetic macromolecular substances of water-soluble, polyvinyl alcohol, Poribinirupi
Examples thereof include loridone, carboxyvinyl polymer, sodium polyacrylate, polyvinyl methyl ether, polyethylene oxide and the like. Water-soluble high components listed above
Among the children, dextrin and demp are particularly preferable.
, Sodium carboxymethyl cellulose, gelatin
And soluble starch, polyvinyl methyl ether
In addition, polyvinyl alcohol, hydroxyethyl
Lulose, sodium alginate, carboxyvinylpo
Limmers are also preferred.

Next, a method for producing the inorganic pigment powder coated with the water-soluble polymer substance of the present invention will be described. 50 to 200 parts by weight of the above water-soluble polymer substance is added to 50 to 300 parts by weight of purified water, and 0.5 to 0.5 at 20 ° C to 80 ° C.
Stir for 3.0 hours to dissolve. 50 to 150 parts by weight of an inorganic pigment powder such as titanium oxide is added thereto,
Stir for 15 minutes and disperse.

This dispersion was placed in a constant temperature blower and blown to 100
Dry at ~ 150 ° C for 10-30 hours. Next, use a crusher such as a micro bantam mill or universal ball
Grind to 0-200 mesh. Thus, an inorganic pigment powder coated with the desired water-soluble polymer substance can be obtained.

In order for the inorganic pigment to be present in a stable dispersion state in the bath water, which is a feature of the present invention, it is important to use each raw material in the above-mentioned quantitative ratio. That is, water 50 ~
300 parts by weight, 50 to 200 parts by weight of water-soluble polymer substance,
The amount of the inorganic pigment is 50 to 150 parts by weight, and particularly preferably, the three are used in substantially the same amount. If the water content is less than the above range, the dispersibility in water of the coated inorganic pigment decreases,
If the amount is too large, the function of the water-soluble polymer substance is weakened.

In addition, the water-soluble polymer substance is 1% more than the inorganic pigment.
If it is less than / 2, the coating is incomplete, and if it is too large, the water-soluble polymer substance may float on the surface of the molten metal or adhere to the bath. The particle size of the inorganic pigment coated with the water-soluble polymer substance is preferably in the range of 60 to 200 mesh. Outside of this range, if the particle size is too small, the particles coagulate and precipitate with each other, and the milkyness of the intended bath water deteriorates, which is not preferable because the commercial value is reduced. If it is too large, the dispersion becomes unstable, which is not preferable.

The proportion of the inorganic pigment coated with the water-soluble polymer of the present invention in the bathing agent is 0.1 in the whole bathing agent.
It is recommended to be up to 20.0% by weight. Further, when other dyes are added, there is an effect that various colors can be enjoyed by mixing the respective colors. The bathing agent containing the inorganic pigment obtained by the production method of the present invention may appropriately contain the following bathing agent components.

1) Inorganic salts Sodium chloride, sodium sulfate, potassium nitrate, sodium nitrate, calcium nitrate, aluminum sulfate, sodium polyphosphate, ammonium chloride, sodium iron sulfate phosphate, sodium thiosulfate, sodium hydrogen carbonate, sodium carbonate, magnesium sulfate, Boric acid, metasilicic acid, silicic acid anhydride, etc. 2) Organic acids Benzoic acid, citric acid, fumaric acid, tartaric acid, pyrrolidonecarboxylic acid, succinic acid, malic acid, etc.

3) Crude drugs Sojutsu, sandalwood, valerian, oysters, pearl oysters, pearl oysters, citrus fruits, orange peel, Japanese tuki, ginger powder,
Carrots, cinnamon, peonies, mint leaves, gibbon,
Sanshishi, Bokuryo, Dokatsu, Shobu, Kaiyou, Matsubusa, Juniper, Juyaku, Ryuu nou, Saffron, Oubak extract, Chimpi, Fennel, Campi end, Chamomile, Melissa, Rosemary, Malonier, Western saw grass, Arnica, etc.

4) Fats and Oils Isopropyl palmitate, isopropyl myristate, squalane, tri (capryl-capric acid) glycerin, bran oil, rice bran extract, olive oil, jojoba oil, soybean oil, liquid paraffin, white petrolatum, etc.

5) Pigments Red No. 2, Yellow No. 4, Green No. 3, Blue No. 1, Red 213
No. 1, Orange No. 205, Yellow No. 1, Green No. 204,
Ministry of Health and Welfare Ordinance Tar Dyes such as Blue No. 2
Natural pigments recognized as food additives such as chlorophyll, riboflavin, annatto, canthaxanthin, crocin, cochineal, vegetarian, anthraquinone.

6) Alcohols: ethanol, stearyl alcohol, isopropyl alcohol, cetyl alcohol, hexadecyl alcohol, etc. 7) Polyhydric alcohol Glycerin, propylene glycol, sorbitol, etc.

8) Surfactants Sodium alkyl sulfate, polyoxyethylene alkyl ether sulfate, lauric acid diethanolamide, polyethylene glycol monostearate and the like. 9) Other sulfur, Kosuna, Yunohana, casein, neutral clay, sodium salicylate, yolk powder, Ili bran, mica powder,
It can be added using skim milk and the like.

Further, the bath agent composition having an inorganic pigment obtained by the production method of the present invention is, in addition to the above-mentioned ones, a bactericidal preservative, a sequestering agent, a fragrance, and a wide range of other compounding agents, if necessary. Can be blended. In this case, the inorganic pigment powder coated with the water-soluble polymer substance of the present invention is added to a bath agent component such as an inorganic salt, and the mixture is placed in a mixer and uniformly stirred and mixed at room temperature.

Any mixer can be used as long as it is used for stirring and mixing powders.
Specific examples thereof include a Bart mixer, a Nauta mixer, a universal stirring mixer, a ribbon mixer, and a V-shaped mixer. The mixing time may be any time required for uniformly mixing the components. When using the mixer described in the above example, the mixing time is usually 5 to 50 minutes.

[0022]

[Function] To enhance the dispersibility of the water-insoluble inorganic pigment in water,
Conventionally, a high HLB surfactant was used, or a substance such as polyphosphoric acid having multiple charges was kneaded to utilize the repulsion of charges. Even if it is effective in the case of, the same method as in the case of a bathing agent containing the inorganic pigment obtained by the production method of the present invention, in which the concentration of the inorganic pigment becomes a dilute solution of about 25 to 30 ppm in bath water. In that case, stable dispersion cannot be achieved.

Further, there is a reaction with the fragrance component contained in the bath additive, which further deteriorates the stability. The reason why the inorganic pigment coated with the water-soluble polymer substance obtained by the production method of the present invention is stably dispersed in the bath water (stable dispersion for one day or more) is still established. Although not done, it is presumed that this is achieved by the water-soluble polymer substance exhibiting a protective colloidal function.

[0024]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

Example 1 100 parts by weight of dextrin was added to 150 parts by weight of purified water, stirred at 30 ° C. for 1 hour, and dissolved and mixed. To this was added 100 parts by weight of titanium oxide, and the mixture was stirred and dispersed at room temperature for 30 minutes. This is blown at 105 ° C for 24 hours (all day and night) in a blower constant temperature dryer (Model DN-81 manufactured by Yamato Kagaku).
Dried. The dried product was pulverized with a micro bantam mill (AP-B type manufactured by Hosokawa Iron Works) to obtain 100 mesh coated titanium oxide.

9 parts by weight of this product, 50 parts by weight of dry sodium sulfate, 40 parts by weight of sodium hydrogen carbonate and 1 of perfume
Universal mixing mixer (25 AM-r manufactured by Sanei Seisakusho)
r (Qr)) and stir-mix for 10 minutes, and bath agent 10k
g were produced. When 30 g of this bathing agent was poured into 200 liters of hot water and stirred, a milky white milk bath-like bath water was obtained, and the stable dispersed state did not change even after one day and a night after use for bathing.

Example 2 80 parts by weight of starch was added to 200 parts by weight of purified water and added at 70 ° C.
For 30 minutes, and dissolved and mixed. 120 parts by weight of calcium carbonate was added thereto, and the mixture was stirred and dispersed at room temperature for 40 minutes. This dispersion is blown into a constant temperature dryer (Yamato D
(N-81 type) at 130 ° C. for 15 hours. This was pulverized with a universal ball (type UB-31 manufactured by Yamato Scientific Co., Ltd.) to obtain 80-mesh coated calcium carbonate.

Next, 6 parts by weight of this coated calcium carbonate, 70 parts by weight of sodium hydrogen carbonate, and 2 parts of dried sodium sulfate.
3 parts by weight, 0.5 parts by weight of a fragrance and 0.5 parts by weight of a green No. 204 tar-based pigment are put into a Nauta type mixer (NX-S type manufactured by Hosokawa Iron Works), and mixed by stirring for 20 minutes.
I got kg. When this was used in the same manner as in Example 1, a greenish milky cloudy bath water having the same stable dispersion state was obtained.

[0029] stirred for 30 minutes in Example 3 carboxy methyl cellulose sodium 100 parts by weight of purified water 300 parts by weight 40 ° C., were dissolved and mixed. 100 parts by weight of magnesium carbonate was added thereto, and the mixture was stirred and dispersed at room temperature for 30 minutes. The dispersion was dried with a blower constant temperature dryer (Yamato Scientific DN-81 type) for 10 times.
Dry at 5 ° C. for 24 hours. This was pulverized with a micro bantam mill (AP-B type manufactured by Hosokawa Iron Works) to obtain a 200 mesh coated magnesium carbonate.

Next, 4 parts by weight of this coated magnesium carbonate, 25 parts by weight of sodium hydrogen carbonate, 60 parts by weight of dry sodium sulfate, and 1 part by weight of perfume were mixed with a universal stirring mixer (25 AM-rr (Qr) manufactured by Sanei Seisakusho). The mixture was stirred and mixed for 10 minutes to obtain 10 kg of a bath agent. When this was used in the same manner as in Example 1, a milky cloudy bath with the same stable dispersion was obtained.

Example 4 100 parts by weight of gelatin was added to 200 parts by weight of purified water to prepare 70 parts by weight.
The mixture was stirred at 0 ° C. for 30 minutes and dissolved and mixed. 120 parts by weight of magnesium oxide was added thereto, and the mixture was stirred and dispersed at room temperature for 30 minutes. This dispersion was dried at 150 ° C. for 10 hours in a blower constant temperature dryer (DN-81 type, manufactured by Yamato Scientific Co., Ltd.). This is a universal ball (YAMATO Scientific UB-31 type)
Was pulverized to obtain 100-mesh coated magnesium oxide.

Next, 9 parts by weight of the coated magnesium oxide, 50 parts by weight of sodium hydrogen carbonate, 40 parts by weight of dry sodium sulfate, 0.5 part by weight of fragrance and 0.5 part by weight of blue No. 2 tar-based dye were added to a Nauta type mixer. (Made by Hosokawa Iron Works
NX-S type) and stir-mix for 20 minutes, bath salt 10k
g was obtained. When this was used in the same manner as in Example 1, a bluish milky cloudy bath having a stable dispersion state was similarly obtained.

Example 5 150 parts by weight of soluble starch was added to 150 parts by weight of purified water, stirred at 30 ° C. for 1 hour, and dissolved and mixed. To this, 150 parts by weight of titanium oxide was added and stirred at room temperature for 30 minutes to disperse. This is blown at 105 ° C for 24 hours (all day and night) in a blower constant temperature dryer (Model DN-81 manufactured by Yamato Kagaku).
Dried.

The dried product was pulverized with a micro bantam mill (AP-B type manufactured by Hosokawa Iron Works) to obtain 100-mesh coated titanium oxide. 5 parts by weight of this product, 50 parts by weight of dried sodium sulfate, 44 parts by weight of sodium hydrogen carbonate and 1 part by weight of perfume were mixed with a universal mixer (manufactured by Sanei Seisakusho 25
AM-rr (Qr)) was added and stirred and mixed for 10 minutes to prepare 10 kg of a bath agent. When this was used in the same manner as in Example 1, a milky cloudy bath with the same stable dispersion was obtained.

Example 6 150 parts by weight of propylene glycol alginate was added to 100 parts by weight of purified water, and the mixture was stirred at 30 ° C. for 0.5 hours and dissolved and mixed. 100 parts by weight of talc was added thereto, and the mixture was stirred and dispersed at room temperature for 30 minutes. This was blown at a constant temperature dryer (Yamato Scientific Co., Ltd. DN-81 type) at 105 ° C. for 2 hours.
It was dried for 4 hours (one day and night). The dried one was crushed with a micro bantam mill (AP-B type manufactured by Hosokawa Iron Works) and crushed to 20
A 0 mesh coated talc was obtained.

6 parts by weight of this product, 80 parts by weight of dry sodium sulfate, 13 parts by weight of sodium carbonate and 1 part by weight of perfume were added to a universal stirring mixer (manufactured by Sanei Seisakusho 25 AM-rr).
(Qr)) and stir and mix for 10 minutes
Was manufactured. When this was used in the same manner as in Example 1, a milky cloudy bath with the same stable dispersion was obtained.

Example 7 Polyvinyl methyl ether 100 was added to 200 parts by weight of purified water.
The mixture was stirred at 30 ° C. for 1 hour, and dissolved and mixed.
100 parts by weight of calcium carbonate was added thereto, and
The mixture was stirred for 0 minutes and dispersed. This was dried at 105 ° C. for 24 hours (one day and night) with a blower constant temperature drier (Model DN-81 manufactured by Yamato Scientific Co., Ltd.).

The dried product was pulverized with a micro bantam mill (AP-B type manufactured by Hosokawa Iron Works) to obtain 100-mesh coated calcium carbonate. 4 parts by weight of this product, 55 parts by weight of sodium chloride, 40 parts by weight of sodium hydrogen carbonate and 1 part by weight of perfume were mixed with a universal mixer (manufactured by Sanei Seisakusho 2
5 AM-rr (Qr)) and the mixture was stirred and mixed for 10 minutes to prepare 10 kg of a bath agent. When this was used in the same manner as in Example 1, a milky cloudy bath with the same stable dispersion was obtained.

Example 8 100 parts by weight of sodium polyacrylate was added to 150 parts by weight of purified water, stirred at 70 ° C. for 1 hour, and dissolved and mixed. To this, 130 parts by weight of zinc oxide was added and stirred at room temperature for 30 minutes for dispersion. This was dried at 120 ° C. for 12 hours using a blower constant temperature dryer (Model DN-81, manufactured by Yamato Kagaku). The dried product was pulverized with a micro bantam mill (AP-B type manufactured by Hosokawa Iron Works) to obtain 80 mesh coated zinc oxide.

9 parts by weight of this product and 30 parts of sodium chloride
Parts by weight, sodium carbonate 30 parts by weight, sodium sulfate 3
0 parts by weight, 0.5 parts by weight of perfume, and 0.5 parts by weight of Orange No. 205 were used as a universal stirring mixer (manufactured by Sanei Seisakusho 25 AM-rr).
(Qr)) and stir and mix for 10 minutes
Was manufactured. When this was used in the same manner as in Example 1, a stable, orange-colored milky cloudy bath water was obtained.

[0041]

The bathing agent of the present invention is the first one to realize a bath water in which a water-insoluble inorganic pigment, which has never been seen before, is stably dispersed.
It has the effect of further enhancing the psychological effect of bathing and increasing the enjoyment of bathing.

Claims (1)

[Claims] 1. A water-soluble polymer in 50 to 300 parts by weight of water.
After adding and dispersing 50 to 150 parts by weight of an inorganic pigment to a water-soluble polymer substance solution in which 50 to 200 parts by weight of a substance are dissolved ,
By drying and grinding, water-soluble polymer with inorganic
A method for producing an inorganic pigment coated with a water-soluble polymer for a bath agent, which comprises coating a pigment.