JPH1087477A - Floating and sustained release type bathing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a floating and sustained-release type bathing agent capable of floating on the surface of warm water when the bathing agent is added to warm water in a bathtub and floating as if it is a whirligig beetle without being sunk in the warm water for a fixed time until the bathing agent is completely dissolved. SOLUTION: In this bathing agent, 65-85% of polyethylene glycol(PEG), 35-10% of the total of an organic acid and a carbonate, silicic anhydride and a perfume, are blended. The PEG is PEG 11,000 alone or a mixture of <=80% of PEG 6,000 and PEG 11,000 or a mixture of 70-90% of PEG 6,000 and 5-30% of PEG 20,000. The organic acid is preferably adipic acid and/or monosodium succinate. The bathing agent can be mixed with one or more of an opacifier, silicon anhydride, calcium silicate, perfume, humectant, plant essence, colorant and enzyme.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small tablet-type bathing agent. When the bathing agent is immersed in hot water of a bathtub, buoyancy is obtained by carbon dioxide gas generated in the hot water, and the surface of the bath is quickly floated on the surface of the hot water. It is an object of the present invention to provide a floating slow-dissolving bathing agent that floats on the surface of a bath without being immersed in the bath until it is completely dissolved for a certain period of time.

[0002]

2. Description of the Related Art The purpose of a bath additive has been to provide a scent or a color tone to a bath to make a mental state calm, to use inorganic salts such as sodium sulfate, and to generate carbon dioxide in hot water. Most of them increase the moisturizing effect or give skin care effect by various moisturizers, plant extracts, etc.In recent years, bathing agents for the purpose of imparting playability during bathing, for example, such as pumice or styrofoam There has been proposed a carrier which easily floats on fresh water, and which is impregnated with a medicinal component or encapsulated.

[0003]

However, these bath additives sometimes leave components that do not dissolve in hot water or form an oil film, which may rather contaminate the bath tub.
Further, the dissolution was too early to achieve the desired playability, or the dissolution was too slow to exhibit the essential medicinal effect during bathing. We have:
Assuming that the original purpose of the bath salt is maintained, it is a small tablet-type floating, slowly dissolving solution that has an arbitrary shape, such as leaves, petals and animals, and has a very delicate appearance that is suitable for each color. It is a type bath additive, which once sinks in hot water when it is put in hot water, it rises up in a short time and floats on the surface of the hot water like a mizusumashi.

In the meantime, there is provided a bathing agent characterized by having a new playability that appeals to the sight, that the bathing agent can be sufficiently enjoyed, which is gradually dissolved in hot water and completely dissolved in about 10 to 20 minutes. This has led to the present invention. It is also envisioned that the present invention will be produced as a product and stored for a considerable period of time before it is actually used. In order to prevent the deterioration and deterioration of quality during that time, we proceeded with careful selection and research on the various raw materials constituting the present invention, and invented a buoyant slowly soluble bathing agent that also satisfies the stability over time. It has been reached.

[0005]

Means for Solving the Problems In claim 1 of the present invention, polyethylene glycol (hereinafter referred to as PEG in the present specification)
Wherein the PEG 6000 and the PEG 11000 are blended in an amount of 65 to 85% and a total of 35 to 10% of an organic acid and sodium hydrogen carbonate.
And a mixture of at least one of PEG 20000 and PEG 20000, wherein the PEG 11000 is 100 to 20%, PEG 60
3. The buoyant slow-dissolving bath preparation according to claim 1 or claim 2, wherein 00 is a mixture of 80% or less.
3. The method according to claim 1, wherein said PEG 6000 is a mixture of 70 to 95% and PEG 20,000 is a mixture of 5 to 30%.
The buoyant, slowly dissolving bath agent according to claim 5, wherein the organic acid is adipic acid and / or monosodium succinate. Item 6 includes, among opacifiers, silicic anhydride, calcium silicate, humectants, fragrances, plant extracts, colorants, and enzymes,
A buoyant slow-dissolving bath agent according to any one of claims 1 to 5 comprising one or more types. In addition, sodium sulfate,
Inorganic salts such as magnesium sulfate, sodium chloride and the like can also be appropriately compounded.

That is, the composition of the present invention comprises PEG plus an organic acid, an alkali carbonate and a compounding component such as a fragrance. First, PEG is heated and melted to form a uniform liquid state. The organic acid, alkali carbonate, etc. are sequentially added thereto while stirring to form a slurry, and the slurry is poured into a mold having a desired shape, and cooled and solidified to form a tablet. It is.

[0007] PEG, which is a constituent of the present invention, ensures viscosity and fluidity at the time of compounding and is easy to process, and the obtained product has a temperature-resistant melting point in the market and changes with time during a considerable period of time. It is blended for the purpose of dissolving in hot water at an appropriate rate without leaving and leaving no insoluble components at the end.

[0008] From such a viewpoint, PEG used in the present invention is PEG4000 specified in the cosmetic primordia and cosmetic outer rules.
, PEG6000, PEG11000 and PEG20000. Of these PEGs, PEG4000 is superior in processability to PEG6000, but has a somewhat lower melting point and is uneasy about temperature resistance.
Further, even in hot water, the dissolution rate is high and a considerable amount is dissolved before floating. PEG6000 has a relatively high melting point, high temperature resistance and easy processability, but tends to have a slightly higher melting temperature in hot water. PEG11000 has a melting point similar to that of PEG6000, but tends to have a slightly higher viscosity when melted. However, the obtained tablets are hard and have an appropriate dissolution temperature, and the change over time is reduced.

PEG 20000 has a melting point almost the same as PEG 6000, but when melted, it has a very high viscosity and spinnability, making it difficult to process and handle. Therefore, the dissolution rate can be adjusted by using PEG11000 alone or by appropriately mixing PEG6000 with PEG11000. Although PEG20000 is difficult to use alone as described above, it can be mixed with PEG6000 at an appropriate ratio.

The present inventors have conducted intensive studies and found that the mixture of PEG11000 and / or PEG6000 and the mixture of PEG6000 and PEG20000 in the buoyant slowly soluble bathing agent of the present invention. When it is low, it is difficult to uniformly mix it with powder components such as organic acids and alkali carbonates described below, and it is liable to change over time, so that 65% or more is required. On the other hand, if the blending ratio is 90% or more, it may not readily come up when poured into hot water. Therefore, it was recognized that the mixing ratio was desirably in the range of 65% to 85%. The mixing ratio of PEG6000 to PEG11000 was good in the range of 80% or less. When the content of PEG6000 was 80% or more, the dissolution rate in hot water became too fast, and there was a tendency to cause aging. Similarly, the mixing ratio of PEG20000 to PEG6000 was good in the range of 70-95% and 30-5%.
It was found that when the content of PEG6000 was 95% or more, the dissolution rate in hot water was increased, and when the content of PEG20,000 was 30% or more, processability became difficult.

The buoyant slow-dissolving bath agent according to the present invention includes:
In addition to the PEG, an organic acid and an alkali carbonate are blended as a blowing agent for carbon dioxide gas. As the alkali carbonate used in the present invention, sodium bicarbonate is used. However, sodium carbonate, sodium sesquicarbonate, or the like can be used alone or as a mixture. The sodium bicarbonate is desirably 3 to 20% based on the total weight of the composition, and the amount of the organic acid used as a neutralizing agent for the sodium bicarbonate is equal to the total composition so that it is equimolar to the sodium bicarbonate. 5-20% of the weight of the product is desirable. If the compounding ratio of the sodium hydrogen carbonate and the organic acid is less than this, the tablets cannot float from the hot water or become very slow. Also, if it is added more than this, the molten liquid
Mixing with PEG becomes difficult, and the tablets generate carbon dioxide gas over time and become brittle and unstable.

It is desirable to use adipic acid and / or monosodium succinate as the organic acid used in the present invention. Compared with other organic acids, adipic acid and monosodium succinate have better floating properties on the surface of hot water, better solubility in hot water, and better resistance to aging, and have the necessary conditions for the effect of the present invention. It is clear that it is. The mixing ratio of the PEG and the blowing agent for carbon dioxide containing sodium hydrogen carbonate and an organic acid is determined from the following three conditions.

[0013] First, the viscosity and fluidity when blended into a bath preparation are appropriate and easy to process, and hard tablets can be obtained. Secondly, when it is poured into hot water, it floats up reliably,
Moreover, it is to dissolve at an appropriate rate. As described above, the dissolution rate after flotation varies greatly depending on the PEG composition, the mixing ratio of the organic acid and sodium hydrogen carbonate, and if it is too fast or too slow, its purpose cannot be satisfied. It was thought that it was desirable to dissolve within the general bathing time of 10 to 20 minutes. Third, the product does not deteriorate during the shelf life in the market or distribution until it is used. In particular, it is necessary to prevent the tablet from disintegrating due to the generation of carbon dioxide gas during storage and the container from deforming. The most suitable compounding ratio to satisfy these conditions is
PEG 65-85%, total of organic acid and sodium bicarbonate 35
Desirably, it is about 10%. The organic acid and sodium hydrogen carbonate were blended so as to be equimolar.

[0014]

EXAMPLES Examples and comparative examples according to the present invention will be described below.

(Example 1) PEG11000 of 75% was heated and melted at 75 to 85 ° C, and 10.7% of sodium bicarbonate was added thereto with stirring, and 9.3% of adipic acid was added when the mixture became homogeneous. Further, 3% of a fragrance previously powdered with 2% of anhydrous silicic acid is added to add 1%
After continuing stirring for 2 hours, 2 g was poured into a 24 mmφ mold, and then cooled to obtain a tablet-type bath agent.

(Example 2) 37.5% PE in 37.5% PEG6000
G11000 was added, and the same amounts of sodium bicarbonate, adipic acid and powdered flavor as in Example 1 were added to obtain a tablet-type bath agent in the same manner as in Example 1.

(Example 3) 67.5% of PEG6000, PEG20000
To 7.5% sodium bicarbonate 10.7%, adipic acid 9.3
% And powdered flavor 5%, and the same operation as in Example 1 was performed to obtain a tablet-type bath preparation.

(Embodiment 4) 52.5% PEG6000 to PEG20000
Was added and the mixture was heated and melted at 70-80 ° C., and the same amounts of sodium hydrogencarbonate, adipic acid and powdered flavor as in Example 1 were added to obtain a tablet-type bath preparation in the same manner as in Example 1.

Example 5 Same PEG composition 75 as in Example 1
% Of sodium percarbonate, 12.5% of monosodium succinate and 3% of a fragrance previously powdered with 2% of silicic anhydride, and a tablet-type bath preparation was obtained in the same manner as in Example 1.

Example 6 The same amount of sodium bicarbonate, monosodium succinate and powdered flavor as in Example 5 were added to the PEG composition of Example 2, and a tablet-type bath agent was prepared in the same manner as in Example 1. I got

(Example 7) To the PEG composition of Example 3, 7.5% of sodium hydrogen carbonate, 12.5% of monosodium succinate and 5% of powdered flavor are added, and a tablet-type bath preparation is obtained in the same manner as in Example 1. Was.

(Example 8) To the PEG composition of Example 4, 7.5% of sodium hydrogen carbonate, 12.5% of monosodium succinate and 5% of powdered flavor are added, and a tablet-type bath preparation is obtained by the same operation as in Example 1. Was.

Hereinafter, Comparative Examples 1 to 8 will be described. PEG6000 to 75
%, The following various organic acids and sodium hydrogencarbonate were equimolar in a total amount of 20%, and 5% of powdered fragrance was added to prepare a tablet-type bathing agent by the method shown in the examples. Comparative Example 1 Malonic acid was used as an organic acid. Comparative Example 2 Maleic acid was used as an organic acid. (Comparative Example 3) Fumaric acid was used as an organic acid. (Comparative Example 4) Succinic acid was used as an organic acid. Comparative Example 5 Citric acid was used as an organic acid. Comparative Example 6 Adipic acid was used as an organic acid. Comparative Example 7 Monosodium succinate was used as an organic acid. (Comparative Example 8) A tablet-type bath agent was prepared by the method shown in the Example with a composition in which 90% of PEG11000, adipic acid and sodium bicarbonate were equimolar in a total amount of 5%, and 5% of powdered fragrance were added. Created.

[0024]

Test Examples These Examples 1 to 8 and Comparative Examples 1 to 8 were subjected to a floating test with hot water, a dissolution test, and a carbon dioxide gas generation test during storage.

(Test conditions) Floating test: One tablet sample was placed in 800 ml of hot water at 40 ° C., and the time required for floating was measured. Dissolution test: One tablet sample was placed in 800 ml of hot water at 40 ° C., and the time required for the tablet sample to float and completely dissolve was measured. Carbon dioxide gas generation test: 2 tablets of each tablet were weighed in advance and weighed in an aluminum laminate bag (dimensions: 85 mm).
× 120 mm) and stored at 40 ° C. for 20 days to measure the degree of swelling and weight change of the bag. Table 1 shows the test results.

[0026]

[Table 1]

[0027]

As described above, the present invention is characterized in that the invention of claim 1 is characterized in that PEG is blended at 65-85%, and the total of organic acid and sodium hydrogen carbonate is blended at 35-10%. The invention according to claim 2, which relates to a buoyant slow-dissolving bath agent, wherein the PE
G6000, PEG11000 and PEG20000 are selected from among one kind or a mixture of two or more kinds. The present invention relates to the floating slowly soluble bathing agent according to claim 1, wherein the invention according to claim 3, wherein PEG is 100 to 20% of PEG 11000, PEG 6000 is
The buoyant, slowly dissolving bath agent according to claim 1 or 2, wherein the mixture is a mixed product of 80% or less.
In the invention described, the PEG is 70-95% of PEG 6000, PEG 20,000
Is a mixture in the range of 5 to 30%.
Or, the invention according to claim 5 relates to the buoyant slowly soluble bathing agent according to claim 2, wherein the organic acid is adipic acid and / or monosodium succinate. The invention according to claim 6, which relates to a buoyant slowly soluble bath agent, comprises one or more of an opacifying agent, anhydrous silicic acid, calcium silicate, a humectant, a fragrance, a plant extract, a coloring agent, and an enzyme. Since the present invention relates to the buoyant slow-dissolving bath agent according to claims 1 to 5, the original purpose of the bath agent is maintained,
It is a small tablet-type bath agent of any shape, such as leaves, petals and animals.When it is put in hot water, it sinks once in the water, rises up in a short time, floats on the surface of the hot water, gradually It has a new playability that appeals to the eye that it dissolves completely in about 10 to 20 minutes after dissolution, and can be used as a buoyant slow-dissolving bathing agent having an effect of sufficiently enjoying bathing time.

Continued on the front page. (72) Inventor Amaba Naka 3-5-20 Tagawa, Yodogawa-ku, Osaka-shi Inside Inabata Koryo Co., Ltd. (72) Inventor Shigeko 3-5-20 Tagawa, Yodogawa-ku, Osaka-shi Inabata Koryo stock Inside the company (72) Inventor Shinichi Matsumura 3-5-20 Tagawa, Yodogawa-ku, Osaka-shi Inabata Koryo Co., Ltd.

Claims (6)

[Claims] (1) A floating, slowly dissolving bath preparation comprising 65 to 85% of polyethylene glycol and 35 to 10% of a total of an organic acid and a carbonate. 2. The floating suspension according to claim 1, wherein said polyethylene glycol is one kind selected from polyethylene glycol 6000, polyethylene glycol 11000 and polyethylene glycol 20000, or a mixture of two or more kinds. Soluble bath additive. 3. The floatability according to claim 1, wherein the polyethylene glycol is a single or a mixture of polyethylene glycol 11000 in a range of 100 to 20% and polyethylene glycol 6000 in a range of 80% or less. Slow-dissolving bath salts. 4. The polyethylene glycol is 70-95% polyethylene glycol 6000, polyethylene glycol
3. The buoyant, slowly dissolving bath preparation according to claim 1, wherein 20000 is a mixture in the range of 5 to 30%. 5. The organic acid is adipic acid and / or succinic acid 1.
The buoyant slow-dissolving bath preparation according to any one of claims 1 to 4, which is sodium. 6. The floating, slowly dissolving type according to claim 1, wherein at least one of an opacifier, silicic anhydride, calcium silicate, a humectant, a fragrance, a plant extract, a colorant, and an enzyme is blended. Bath additive.