JPH05935A - Powdery bathing agent composition - Google Patents

Abstract

PURPOSE:To provide a powdery bathing agent composition having warmth- keeping effect and skin-moisturizing effect and resistant to caking of the composition. CONSTITUTION:The objective powdery bathing agent composition contains 10-90wt.% of beta-lactose, 8-88wt.% of inorganic salts contained in hot spring water and 0.5-3wt.% of synthetic aluminum silicate and/or silicic anhydride.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdery bath composition having a heat retaining effect, an excellent moisturizing effect on the skin and an anti-caking effect of the composition.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
The bath agent composition is composed mainly of hot spring-containing inorganic salts such as sodium sulfate and sodium carbonate, and is mixed with auxiliary components such as fragrances and coloring agents. It is also widely used because it has the effect of refreshing the mood when taking a bath by adding aroma and color to the bath water. However, in a hot water bath of inorganic salts, there are cases where the oil is degreased with alkali, and the crystals of the inorganic salt remaining after the bath may make the skin rough. On the other hand, recently
With the diversification of consumer needs, a bath salt having a beautiful skin effect has been desired.

[0003] In order to meet such a demand, various bathing agent compositions have been proposed, but few of them can satisfy consumers, and each has some problems. It's a reality. For example, some oil components are used, but in order to obtain the effect, it is necessary to increase the amount of oil blended, which often causes problems such as sticky skin after bathing and contamination of the bath with oil. Many proposals have been made using milk components (Japanese Patent Publication No. 2-36).
568, JP-A-63-57515, JP-A-63-179818, JP-A-63-250317, etc.), milk components agglomerate and float on the surface of the bath due to the change with time of the product, or an unpleasant odor. May occur, or may be colored brown, and further, the powdery composition causes caking and fluidity is impaired so that it cannot come out smoothly from the container, which may cause a problem that the commercial value is significantly reduced. Many. In order to avoid these problems, a method of enclosing with cyclodextrin has been proposed (Japanese Patent Publication No. 63-2925, Japanese Patent Publication No. 61-286318, Japanese Patent Publication No. 2-30).
However, there is a cost problem and it is not practical. Further, there is one utilizing sugar (Japanese Patent Laid-Open No. 2-21919).
No. 17), a powdery composition easily causes caking due to aging. For example, in the case of sucrose or the like, problems such as sticky skin after bathing occurred.

The present invention has been made under such circumstances, and its purpose is to have a heat retaining effect, a moisturizing effect on the skin, and an anti-caking effect of the composition. It is intended to provide a bath agent composition having excellent day stability.

[0005]

The present invention provides 10-90% by weight of β-lactose, 8-88% by weight of hot spring-containing inorganic salt,
Synthetic aluminum silicate and / or silicic anhydride 0.5 to
A powdery bath agent composition containing 3% by weight.

The present invention will be described in detail below. The β-lactose used in the present invention is one of the isomers of lactose contained in milk, and is a disaccharide in which β-D-glucose and β-D-galactose are linked by β-1,4, and is industrially used. Specifically, it is obtained as a by-product of the production of butter, cheese, casein and the like. This β-lactose has a much higher solubility than the α-form, and is 55% in 100cc of water at 20 ° C.
It has the advantage that it dissolves quickly and dissolves as a component of a bath composition when the bath water is added.

The blending amount of β-lactose is 10 to 90% by weight, preferably 29 to 49% by weight, based on the whole composition. If the amount is less than 10% by weight, a sufficient moisturizing effect on the skin cannot be obtained. On the other hand, if the amount is more than 90% by weight, when the bath water is added, the composition becomes lumpy on the surface of the bath, and it takes time for uniform dissolution. In addition, the amount of the inorganic salt contained in the hot spring is reduced, and the heat retaining effect cannot be obtained.

As the hot spring-containing inorganic salt used in the present invention, sodium sulfate, sodium hydrogen carbonate, sodium chloride, calcium nitrate, potassium nitrate, sodium nitrate, aluminum sulfate, sodium polyphosphate, ammonium chloride, iron sulfate, sodium phosphate, Examples thereof include magnesium sulfate, sodium thiosulfate, sodium sesquicarbonate, sodium sulfide, borax, calcium oxide, magnesium carbonate and potassium chloride.

[0009] And, the compounding amount of this hot spring-containing inorganic salt is
8 to 88% by weight, preferably 5
It is 0 to 70% by weight. If this is less than 8% by weight,
A sufficient heat retaining effect cannot be obtained, and when it is more than 88% by weight, the blending amount of β-lactose becomes small and the skin moisturizing effect cannot be obtained.

The synthetic aluminum silicate used in the present invention is a known compound prepared by washing and heating a precipitate obtained by adding a soluble aluminum salt to a sodium silicate solution, and anhydrous silicic acid is a sodium silicate solution. It is a known compound produced by reacting with an acid to decompose it. Also,
These particle sizes are not particularly limited, but generally 10
It is preferably about μm or less.

Synthetic aluminum silicate and anhydrous silicic acid are
It has an effect of preventing caking of the powdery bath agent composition of the present invention, and the effect is the same whether only one of them is mixed or both are mixed and mixed. And the total of these compounding amounts is 0.5 with respect to the entire composition.
To 3% by weight, preferably 0.75 to 1.5% by weight. If it is less than 0.5% by weight, a sufficient anti-caking effect cannot be obtained, and if it is more than 3% by weight, the composition tends to scatter and the commercial value is lowered.

Further, the composition of the present invention may be added with fragrances, coloring agents, crude drugs and the like which are generally used in bath preparation compositions.

[0013]

EXAMPLES The present invention will be specifically described below with reference to Examples, but prior to this, evaluation items and methods will be described.

(1) Bathing Method Ten subjects were selected and bathed in hot water containing the bathing agent composition (30 g of bathing agent composition added to about 180 liters of hot water).
The bath temperature was 41 ° C. and the bathing time was 10 minutes. (2) Evaluation method of heat retention effect 1. Condition-measurement room temperature: 26 ° C. Measurement site: Chest. 2.Observation equipment-thermography (Nippon Electric Sanei THER
MOTRACER 6T66) 3. Questionnaire evaluation method 5 points ---- Very warm. 4 points ---- It gets a little warm. 3 points ---- Normal. 2 points ---- It is a little hard to warm up. 1 point ---- It is very difficult to warm up.

(2) Questionnaire evaluation method of skin moisturizing effect 5 points ---- The skin is very moisturized. 4 points ---- Slightly moisturized skin. 3 points ---- Normal. 2 points ---- Slightly rough skin. 1 point ---- The skin is very dry.

(3) Method of evaluating anti-caking effect Whether the caustic is formed by putting the bathing agent composition in a glass container for about 7 minutes, stoppering it, and storing it in a thermostat at 45 ° C. for 1 month. Observe how. Generally, it has been confirmed that when caking does not occur even if it is stored in a 45 ° C. constant temperature tank for one month, or even when it is put in a store as a product for two years, it does not cause caking and can be used.

Production Method The compositions used in the examples are prepared by a usual method of mixing and stirring powders, but β-lactose and synthetic aluminum silicate and / or silicic acid anhydride are uniformly mixed to obtain β-lactose. It is preferable that the synthetic aluminum silicate and / or silicic acid anhydride be sufficiently adhered to the surface of the lactose crystal or powder, and then added to other compounding ingredients that have been uniformly mixed in advance. Thus, by sufficiently adhering the synthetic aluminum silicate and / or silicic acid anhydride to the surface of the β-lactose crystal or powder, it is possible to reliably prevent caking of the composition.

Examples 1 to 4 and Comparative Examples 1 to 3 A bath agent composition having the composition shown in Table 1 was prepared by the above-mentioned manufacturing method, and the above-mentioned various evaluations were carried out. The results are shown in Table 2.
The numbers in Table 1 show% by weight.

[Table 1]

[0019]

[Table 2]

Example 5 In the same manner as in Example 1, a bath agent composition having the composition shown in Table 3 was prepared.

[0021]

[Table 3]

The powdery bath agent composition of Example 5 has a heat retaining effect and a moisturizing effect on the skin and is excellent in storage stability.
Even if stored in a 5 ° C constant temperature bath, caking did not occur for one month or longer.

[0023]

INDUSTRIAL APPLICABILITY As described above, the present invention provides a useful powdery bath composition which is excellent in heat retaining effect, eliminates skin bulk, gives a moist feel, and can prevent caking of the composition. It is clear to provide.

Claims (1)

Claims: 1. The composition contains 10-90% by weight of β-lactose, 8-88% by weight of a spa-containing inorganic salt, 0.5-3% by weight of synthetic aluminum silicate and / or anhydrous silicic acid. A powdery bath agent composition comprising: