JPS6122009A - Two-layer type shaking lotion - Google Patents

Abstract

PURPOSE:The titled lotion, containing a water-soluble aluminum salt, alkali metal salt and pigment in a specific proportion, assuming a beautiful clearly separated appearance on allowing to stand, and integrally miscible by shaking in use to form a uniform suspension. CONSTITUTION:A two-layer type shaking lotion, obtained by incorporating 0.1- 3wt%, preferably 0.1-1wt% water-soluble aluminum salt, e.g. aluminum sulfate or basic aluminum chloride, 0.1-3wt%, preferably 0.1-1wt% alkali metal salt, e.g. Na or K salt of primary or tertiary phosphoric acid, carbonic acid or citric acid, capable of forming a water-insoluble hydrosol by reaction with the above- mentioned aluminum salt, 0.1-15wt% pigment and 50-99wt%, preferably 70- 98wt% water.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a two-layer type shaking roller. −More specifically, the water layer (upper layer) and powder layer (lower layer) are transparent when left still.
It has a clear and beautiful appearance with two layers, and when used by shaking, the two layers are mixed together and dispersed uniformly to form and maintain a uniform suspension, which improves the skin. It provides a good feeling (lightness, moistness, coolness, etc.), an astringent feeling, and the effect of soothing the inflammation of sunburned skin and protecting the skin.It can be applied smoothly and quickly, and it can be left standing after use. The present invention relates to a two-layer shaking lotion in which the powder settles and can be clearly separated into two layers: an aqueous layer and a powder layer.

(Prior art) Conventional two-layer shaking lotions contain sodium chloride and calcium chloride as soft flocculants to prevent pigments from clumping (caking) when left still and from being unable to be uniformly redispersed during use. , magnesium chloride, magnesium sulfate, and other water-soluble salts.

However, even in this method, caking of the pigment due to long-term storage is unavoidable, the appearance of the powder layer when left still is not beautiful, and bulkiness of the pigment cannot be expected. In particular, when zinc oxide, which is added to protect sunburned skin, is used as the pigment, caking is significant. In such cases, the caked pigment (zinc oxide) has a fatal drawback of giving a rough feel when applied.

(Disclosure of Disclosure) As a result of intensive research to eliminate the drawbacks of the prior art, the present initiator and others have found that when combining each component according to the structure of the present invention described later, water-soluble aluminum salt and alkali metal salt are As a result, water-insoluble hydrosil in the system is adsorbed (precipitated) on the powder particle surface, widening the distance between the powder particles and preventing the agglomeration of powder particles. Due to its bound sedimentation property (the property that particles bind each other and settle together by chain-like abrasions), it is an excellent two-layer shaker that can form a suspension in which the water layer is uniformly dispersed when left standing. The inventors discovered that lotions can be easily produced industrially and completed the present invention.

(Objective of the Invention) The present invention improves all the drawbacks of the prior art as described above, and its purpose is to:
It shoots with a beautiful appearance separated into two layers, a water layer and a powder layer, and when used by shaking, they are mixed together to form a homogeneous suspension with powder particles evenly dispersed at all times, and are good for skin. Good feeling (light feeling, moist feeling, cool feeling)
To provide a two-layer shaken lotion that gives a feeling of astringency, calms inflammation of sunburned skin, protects the skin, and can be applied smoothly and quickly.

(Structure of the Invention) That is, the present invention contains 0.1 to 3% by weight of water-soluble aluminum salt and 0.1 to 3% by weight of alkali metal salt as main components.
, a two-layer shaking lotion containing 0.1 to 15% by weight of pigment and water.

(Specific description of the composition) The water-soluble aluminum salt used in the present invention is, for example, allantoin chlorohydroxyaluminiumenol sulfonate aluminum, aluminum citrate, etc., and the amount used is 0% based on the weight of the composition. .1 to 3% by weight, preferably 0.1 to 1% by weight.

If it is less than 0.1% by weight, it will not separate clearly into two layers, a transparent water layer and a powder layer, when shaken and left to stand, and the pigment will be prone to caking. If the amount exceeds 3% by weight, the appearance of the separated and settled powder layer will deteriorate significantly.

The alkali metal salts used in the present invention are salts of alkali metals that are readily soluble in water and can react with water-soluble aluminum salts to form hydrosils when incorporated into the composition, and include, for example, Sodium or potassium salts of phosphoric acid, sodium or potassium salts of diphosphoric acid, sodium or potassium salts of tertiary phosphoric acid. Sodium or potassium salts of pyrophosphoric acid, sodium or potassium salts of polyphosphoric acid, sodium or potassium salts of metaphosphoric acid. Sodium or potassium salt of carbonic acid. sodium hydrogen carbonate. Potassium bicarbonate, sodium or potassium salts of citric acid, sodium or potassium salts of succinic acid.

Sodium or potassium salt of tartaric acid. Preferred are the sodium or potassium salts of lactic acid. These may be used singly or in combination.

The amount of alkali metal salt used is 0 to 1 based on the weight of the composition.
-3% by weight, preferably 0.1-1% by weight. 0.
If it is less than 1% by weight, the pigment will not clearly separate into two layers, a transparent water layer and a powder layer, when it is shaken and left to stand, and the pigment will likely cause caking. If the amount exceeds 3% by weight, the appearance of the separated and settled powder layer will deteriorate significantly.

The amount of water used in the present invention is 5% based on the weight of the composition.
0 to 99% by weight, preferably 70 to 98% by weight.

The essential ingredient blended (used) in the two-layer shaking lotion of the present invention is the above-mentioned water-soluble aluminum salt.

The composition consists of an alkali metal salt, a pigment, and water, but if necessary, well-known and commonly used ingredients such as fragrances, preservatives, humectants, and pigments can be added. In addition, common ingredients include aliphatic lower-hydric alcohols (ethyl alcohol, isopropyl alcohol, etc.) that can provide a cooling sensation, and liquid polyhydric alcohols as humectants (such as propylene glycol, 1,3-butylene glycol, glycerin, Polyglycerin, polyethylene glycol, etc.) and specific pigments described below may also be blended.

Specific pigments mentioned above include zinc oxide, talc-9-kaolin, mica, sericite, and titanium dioxide.

Consists of anhydrous magnesium silicate, anhydrous aluminum silicate, calcium carbonate, magnesium carbonate, red iron oxide (red iron oxide), yellow iron oxide, black iron oxide, hydrated silicon oxide, sericite, titanium mica, sulfur 1 ultramarine, and oil-soluble pigment. At least one selected from the group is preferred. The amount of these specific pigments is at most 15% by weight, preferably 1 to 5% by weight.

When an appropriate amount of this specific pigment is blended, the appearance of the powder layer in the two-layer shaking lotion becomes more beautiful, and the interface between the water layer and the powder layer becomes clearer, which is preferable.

The two-layer shaken lotion of the present invention has a beautiful two-layer structure with a transparent water layer (upper layer) on a lower layer of deposited powder particles with a clear interface. When used, the two layers are easily mixed and the powder particles are uniformly dispersed, and this state is maintained for a certain period of time, leaving a good feeling on the skin (light, moist, cool). , astringent feeling, etc.).

The two-layer shaking lotion of the present invention is a two-layer shaking lotion that can exhibit the unique and remarkable effects as described above, and includes, for example, a two-layer calamine lotion, a two-layer anti-inflammatory lotion, and a two-layer shaking lotion. It is useful as a mold conditioning locimin, etc.

Examples will be described below.

The part shown in the examples means the critical part.

Characteristics of the two-layer shaking lotion (composition) shown in Examples (uniform miscibility during shaking, appearance after standing).

Reproducibility, feel during use) were examined by three specialized inspectors. The test method is as follows.

(1) Uniform miscibility during shaking Sample composition in a transparent glass bottle (diameter 4 cm, height 13 countries)
After the container was placed at a height of 10 m+ and allowed to stand still at room temperature, it was manually shaken up and down vigorously (the number of times it was shaken until the components in the two layers were uniformly mixed was determined).

If the required number of shaking is 1 to 5 times, it is very good (extremely easy to use, the code is O), and if it is 6 to 10 times, it is good (
Easy to use. The code is O), and if it is 11 to 20 times, it is slightly poor (slightly difficult to use).

The code is △), and if it is 21 times or more, it is considered defective (difficult to use. The code is ×).

Incidentally, the greater the number of times of shaking required, the more troublesome shaking becomes and the more difficult it is to use.

(2) Appearance when left still The sample composition was placed in a transparent glass bottle similar to the above-mentioned il+, manually shaken vigorously up and down to uniformly mix and disperse the components of each layer, and then left undisturbed for 1 hour. Then, the transparency of each separated layer (for example, two layers) and their interfaces, the presence or absence of dirt, etc. were examined with the naked eye. The evaluation was good if the water layer was substantially transparent and there was no dirt on the interface, and bad if the water layer was opaque or there was dirt on the interface.

(3) Repetition reproducibility In a constant temperature room that changes back and forth in a range of 5 to 45 degrees Celsius,
The sample composition obtained in the above IT) was stored for 6 months, and the above characteristics, uniform miscibility when shaken and appearance when electrostatically charged, were examined, and based on the results and the results immediately after production, the presence or absence of reproducibility by oral administration was determined. It was judged.

In addition, when the rank of the above-mentioned characteristic did not substantially decrease, the reproducibility was determined to be good (present), and when the rank of the above-mentioned characteristic decreased, the reproducibility was determined to be poor (absent).

(4) Feel during use The tactile effect is the feel when applied to the skin (light feeling).

(moist feeling, sticky feeling, cool feeling), extensibility (spreading),
The finish etc. after painting were examined for the above +31 sample compositions stored at room temperature for 6 months.

Example 1 (Two-layer anti-inflammatory lotion) (1) Prescription ingredients ■ Zinc oxide 2.0 parts ■ Aluminum sulfate 0.5 parts ■ Sodium diphosphate 0.2 parts ■ Methylparaben (preservative)
0.1 part ■ Purified water 97.2 parts + 2)! ! 1 Manufacturing method Add ingredients ■ and ■ to a part of ingredient ■ above under stirring, dissolve and disperse, then gradually dissolve ingredients ■ and ■ in the remainder of ingredient ■ while stirring. In addition, a two-layer anti-inflammatory lotion of the present invention was prepared. The properties of this anti-inflammatory lotion were investigated as described above.

First, as a result of examining uniform miscibility during shaking, it was found that the two layers, which had been separated, became integrally mixed after shaking three times, resulting in a suspension of powder (zinc oxide) uniformly dispersed in water. was generated. From these results, this two-layered anti-inflammatory lotion is extremely easy to use, as it can easily produce a uniformly suspended anti-inflammatory lotion by shaking, and can be maintained stably for an appropriate period of time.
◎). Furthermore, after one hour of standing, it exhibited a beautiful appearance with two layers clearly separated, a colorless and transparent aqueous layer and a white powder layer.

After storing this two-layered anti-inflammatory lotion for 6 months as described above, we investigated its repeatability and found that the uniform miscibility when shaken after 6 months (required number of shaking is 5 times) was the same as that of the manufacturer. It was substantially the same as immediately after, and after standing still, the water layer/powder layer interface of the restored two-layer structure was clear, and the water layer was clear and transparent, exhibiting the same beautiful appearance as immediately after production. This two-layer anti-inflammatory lotion had a good feel without any stickiness during use, and had a good finish after application.

Comparative Example 1 A comparative anti-inflammatory lotion was prepared in the same manner as in Example 1, except that aluminum sulfate was not used and 97.7 parts of water was used. As a result, the anti-inflammatory lotion obtained did not clearly separate into two layers, and the miscibility during shaking was such that they did not mix together even after 25 or more shakings, and some of the zinc oxide caused caking. did. As a result of a practical test, it was found to be rough when applied, had a poor feel, and was not practical.

Comparative Example 2 The same procedure as in Example 1 was carried out except that sodium diphosphate was not used and 97.degree. 4 parts of water was used.

As a result, the anti-inflammatory lotion obtained was clearly separated into two layers, but the compatibility during shaking required 18 shakes (slightly poor), and some of the zinc oxide had caused caking. As a result of a practical test, it was found to be slightly rough when applied and had a poor feel.

Example 2 A two-layer anti-inflammatory lotion was prepared in the same manner as in Example 1, except that 5 parts of ethyl alcohol and 3 parts of glycerin were further added and 89.2 parts of water was used.

When this lotion was allowed to stand still, it had a beautiful appearance that was clearly separated into two layers: a colorless and transparent water layer and a white pigment layer. After separation into two layers, the mixture was shaken three times, and the two layers were mixed together and uniformly dispersed. In addition, as a result of examining repeatability after 6 months of storage, we found that uniform miscibility during shaking (
The required number of shaking (4 times) was very good and was the same as that immediately after production, and the water layer and water m/powder RS surface had a clear, clear, and beautiful appearance. This anti-inflammatory lotion had both a refreshing and moist feeling and gave a pleasant feeling.

From these results, it was found that this anti-inflammatory lotion was also extremely easy to use and provided a better feel compared to the good one of Example 1.

Example 3 (Two-layer Calamine Lotion) A two-layer calamine lotion was prepared according to the formulation shown in Table 1. Table 2 shows the properties of the two-layer calamine lotion obtained. As is clear from these results, the amount of basic aluminum chloride is 0.1 to 3% by weight (preferably 0.1 to 1% by weight), and the amount of alkali metal salt is 0.1 to 3% by weight. % by weight (preferably 0.1 to 1% by weight).

Example 4 (double-layer conditioning lotion) 3rd
A two-layer conditioning lotion was prepared using the recipe based on the table. Table 4 shows the properties of the two-layer conditioning lotion obtained.

Table 4 Example 5 (Two-layered conditioning lotion) [1
1 Prescription Ingredients ■ Anhydrous aluminum silicate 3.0 parts ■ Titanium oxide 0.1 part ■ Red iron oxide 0.01 part ■ Aluminum nitrate 1.0 part, ■ Sodium citrate 0.6 part ■ Propylene glycol 5. 0 parts ■ Purified water 90.
Part 29 (2) Manufacturing method Mix and dissolve ingredients ■ and ■ in part of the above ingredients (■),
To this aqueous solution is added a mixture of components 1 to 2, which have been crushed and mixed in advance, and uniformly dispersed with stirring. Next, a solution of component (2) was gradually added to the remainder of component (2) under stirring to prepare a two-layer conditioning lotion of the present invention. The properties of this two-layer conditioning lotion were investigated as described above.

First, uniform miscibility during shaking was examined. As a result, the two separated layers were integrally mixed after the required number of shaking 7 times, and a suspension in which the powder was uniformly dispersed was produced. From these results, it was confirmed that this two-layered conditioning lotion was extremely easy to use, as it could easily produce a uniformly suspended conditioning lotion by shaking and could be stably maintained for an appropriate period of time. Furthermore, after one hour of standing, it exhibited a beautiful appearance with two layers clearly separated, a colorless and transparent aqueous layer and a pink powder layer. In addition, as a result of storing this two-layer conditioning lotion for 6 months as described above and examining its reproducibility, it was found that the uniform miscibility when shaken after 6 months (required number of shaking 8 times) was substantially the same as that immediately after production. The water layer/powder layer interface of the two-layer structure restored after standing was clear, clear and transparent, and had the same beautiful appearance as immediately after production. Katsu's two-layer conditioning lotion does not have a sticky feeling when used, and is smooth and blends well into the skin. Procedural amendment dated April 31, 1988 Patent Application No. 141120 No. 2, Title of Invention: Two-layer type Relationship with the case of the person making the amendment, Patent Applicant Address: 5-17-4 Sumida, Sumida-ku, Tokyo 584
Patent Department, Kanebo Co., Ltd., 1-5-90 Tomobuchi-cho, Bejima-ku, Osaka Telephone: (06) 921-1251 4. Number of inventions increased by amendment None 5. "Explanation" column 6, content of amendment

Claims (2)

[Claims] (1) Main components: water-soluble aluminum salt 0.1-3% by weight, alkali metal salt 0.1-3% by weight, pigment 0.1-3%
A two-layer shaking lotion containing 15% by weight and water. (2) The two-layer shaking lotion according to claim (1), which contains 50 to 99% by weight of water.