JPS63190820A - Foamable bathing agent - Google Patents

Abstract

PURPOSE:To obtain the titled bathing agent, containing a carbonate treated with polyethylene glycol and powder of an organic acid as an active ingredient, having excellent preservation stability for a long period and capable of generating gaseous carbon dioxide in water or hot water and optionally regulating foaming duration. CONSTITUTION:A foamable bathing agent containing a carbonate treated with polyethylene glycol and powder of an organic acid as an active ingredient. For example, sodium carbonate, sodium hydrogencarbonate, etc., are cited as the carbonate, which is preferably pulverized to provide 50mum-3.0mm particle diameter thereof. Polyethylene glycol having normally 1,500-6,000mol.wt. is used as the polyethylene glycol. A method for dipping, e.g. the carbonate in liquid polyethylene glycol, etc., is used as a method for treating the carbonate. The amount of the sticking polyethylene glycol is preferably such that at least 90% of the carbonate particle surface is coated. The particle diameter of the organic acid is also preferably 50mum-3.0mm.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a foaming bath agent that generates carbon dioxide gas in water or hot water.

[Prior art and its problems] Various forms of bath additives have been used in the past, such as those disclosed in JP-A-58-104110,
As disclosed in Japanese Patent Publication No. 8-177912 and Japanese Patent Application Laid-Open No. 142916, carbon dioxide bubbles in water or hot water containing carbonate as the main component and to which sulfate or organic acid are added. Effervescent bath additives that generate .

However, if these foaming bath agents are stored or kept for a long period of time, they deteriorate and their foaming properties are significantly reduced.Therefore, various modifications have been made to foaming bath agents in order to maintain the stability of foaming bath agents. However, to date, no effervescent bath preparation with satisfactory long-term storage stability has been obtained.

[Problems to be Solved by the Invention] Therefore, the present inventors have conducted extensive research to overcome the problems of the prior art as described above and create a foaming bath agent with excellent long-term storage stability. A completely new fact that when a mixture of polyethylene glycol-treated carbonate and organic acid powder is used as a foaming bath agent, the resulting foaming bath agent exhibits excellent long-term storage stability. They discovered this and completed the present invention.

Means for Solving Problem C] That is, the present invention relates to a foaming bath agent containing a carbonate treated with polyethylene glycol and an organic acid powder.

[Function and Examples] The foaming bath agent of the present invention can be obtained by blending a carbonate treated with polyethylene glycol and an organic acid powder.

Examples of the carbonate include sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, and sodium hydrogen carbonate, and these may be used alone or in combination of two or more. In order to make the carbonate sufficiently treated with polyethylene glycol and viscous, it is preferable to use a carbonate that has been pulverized to a particle size of 50 to 3.0 aul.

The polyethylene glycol suppresses the decomposition of carbonates,
It is used as a component to improve the long-term storage stability of the resulting bath additive, and as a binder between the carbonate and the 9-acid powder, and those having a molecular weight of 1,500 to 8,000 are usually used. Note that the same shape can be used by heating and melting it.

Treating the carbonate means depositing polyethylene glycol on the surface of the carbonate, for example by immersing the carbonate in liquid polyethylene glycol or applying the polyethylene glycol to the carbonate. .

Although the amount of polyethylene glycol attached cannot be determined unconditionally since it varies depending on the size of the carbonate particles, it is preferable that at least 90% of the surface of the carbonate particles be coated.

Examples of the organic acids include succinic acid, citric acid, malic acid, maleic acid, phthalic acid, fumaric acid, malonic acid, and tartaric acid, which may be used alone or in combination of two or more. It's okay.

The organic acid is usually used in powder form to enable it to adhere to the carbonate by means of polyethylene glycol deposited on the surface of the carbonate, and to impart long-term storage stability to the organic acid. , the particle size is 50-3.
It is preferable to use one that is adjusted so that the ratio is 0.

The amount of the organic acid powder to be used is preferably 50 to 300 parts by weight per 100 parts by weight of the carbonate; if it is less than 50 parts by weight, foaming properties will be reduced, and if it exceeds 300 parts by weight, The foaming properties of Aimo become smaller.

Further, in order to firmly adhere the organic acid powder and the carbonate, any number of polyethylene glycols may be applied to the surface of the organic acid powder.

In this case, it is preferred that at least 90% of the surface of the organic acid powder particles be coated with polyethylene glycol. In this case, both the carbonate and organic acid powders are coated with polyethylene glycol, which is preferable because the long-term storage stability as a bath agent is further improved.

When both the carbonate and the 4' acid powder are coated with polyethylene glycol, the carbonate and the organic acid powder may be coated with polyethylene glycol separately and then mixed. After mixing the organic acid powder and the organic acid powder, coating treatment may be performed with polyethylene glycol.

Since the bath additive of the present invention is treated with polyethylene glycol, the molding pressure is very low (approximately 30 kg/cj).
However, it can be press-molded into a tablet shape, and further can be appropriately molded into a powder, granule, etc. depending on the purpose and use.

Further, by increasing or decreasing the amount of the polyethylene glycol used, the foaming time in water or hot water can be adjusted.

The effervescent bath agent of the present invention may contain inorganic salts to enhance heat retention, such as sodium sulfate, sodium chloride, potassium chloride, and sodium thiosulfate, as well as inorganic salts to promote blood circulation, such as ginger, nebula, turmeric, and staghorn. If necessary, add herbal medicines, fragrances, pigments such as Red No. 2, Yellow No. 4, Green No. 204, and Blue No. 2 in an amount not exceeding 60 parts by weight to 1,100 parts by weight of the total effervescent bath agent. You may. If the amount added exceeds 60 parts by weight, the foaming properties will be weak and the foaming duration will be short.

Next, the present invention will be explained in more detail based on Examples, but the present invention is not limited to these Examples.

Example 1 100 carbonate-treated products were cooled while mixing 32 parts by weight of polyethylene glycol (#4000) heated to 80°C and 68 parts by weight of sodium bicarbonate.
parts by weight and 8 parts of polyethylene glycol (14000)
32 parts by weight of citric acid dissolved by heating to 0°C and 68 parts by weight of citric acid
Citric acid treated product 100 cooled while mixing with parts by weight
I got the weight part.

Next, 37 parts by weight of the sodium bicarbonate-treated product, 18 parts by weight of the citric acid-treated product, 14 parts by weight of sodium sulfate, 29 parts by weight of polyethylene glycol (# [1000), 1 part by weight of fragrance, and 111 parts of pigment (Blue No. 2). After mixing, 28 g of the mixture was put into a press mold (diameter: 49+am, depth 32 mm) and compressed into tablets at a pressure of 100 kg/cj to obtain a tablet-shaped effervescent bath agent.

The physical properties of the resulting foaming bath agent, including long-term storage stability and moldability, were investigated according to the following methods. The results are shown in Table 1.

(Long-term storage stability) The obtained foaming bath agent was coated with cellophane film (thickness: 20
an) The product was hermetically packaged with a sandwich laminate film formed by sequentially laminating a polyethylene film (thickness = 15, ia), an aluminum film (thickness: 20-), and a polyethylene film (thickness: 30 times). This sealed package was left in a constant temperature and humidity chamber at a temperature of 50° C. and a humidity of 75% for two months, and the long-term storage stability of the sealed package was evaluated according to the following criteria.

(Judgment Kikuwa) ○: No change in sealed package.

X: The sealed package expanded and burst.

(Moldability) The moldability of the obtained foaming bath agent was evaluated using the following criteria.

(Judgment criteria) ○: Molded into desired shape.

ΔD Partial chipping or distortion occurred.

X: The shape collapsed and could not be molded into the desired shape.

Example 2 Polyethylene glycol (#4000) 29 was used in place of 1 part of polyethylene glycol (16000) 29ffif used to prepare the bath agent in Example 1.
A tablet-shaped foaming bath agent was obtained in the same manner as in Example 1, except that parts by weight were used.

As physical properties of the obtained bath additive, long-term storage stability and moldability were measured in the same manner as in Example 1.

The results are shown in Table 1.

Example 3 Polyethylene glycol (#4) used to treat sodium bicarbonate and citric acid in Run F14J1
A tablet-shaped foaming bath agent was obtained in the same manner as in Example 1, except that 32 parts by weight of polyethylene glycol (#6000) was used instead of 32 parts by weight.

The long-term storage stability and moldability of the obtained tablet-like foaming bath agent were determined by DI in the same manner as in Example 1. The results are shown in Table 1.

Examples 4 and 5 Polyethylene glycol (#800) used in Example 1
0) 34 parts by weight of polyethylene glycol (#8000) instead of 29 parts by weight (Example 4),
A tablet-shaped foaming bath agent was obtained in the same manner as in Example 1, except that 1 part of 17fffff (Example 5) was used.

The physical properties of the obtained tablet-like foaming bath agent were measured for long-term shelf life (7), stability and moldability in the same manner as in Example 1. The results are shown in Table 1.

Examples 6 and 7 Polyethylene glycol (#400) used in Example 1
0) Instead of using 32 parts by weight, 42 ffi parts of polyethylene glycol (#4000) was used (Example 7)
A tablet-shaped foaming bath agent was obtained in exactly the same manner as in Example 1, except that 13 parts by weight (Example 8) were used.

The physical properties of the obtained tablet-like effervescent bath agent were the long-term storage stability and moldability as in Example 1/IIJ
Established. The results are shown in Table 1.

Example 8 A tablet-shaped foaming bath agent was obtained in the same manner as in Example 1, except that 18 parts by weight of the tartaric acid-treated product was used instead of the 18 parts by weight of the citric acid-treated product used in Example 1.

Example 9 A tablet-shaped foaming bath agent was obtained in the same manner as in Example 1, except that 37 parts by weight of the sodium bicarbonate-treated product used in Example 1 was replaced with 37 parts by weight of the sodium carbonate-treated product.

Comparative Example 1 Polyethylene glycol (#400) used in Example 1
0) Instead of using 32 parts by weight, use polyvinyl alcohol (degree of polymerization 150(1)) Use 32 parts by weight of polyvinyl alcohol (degree of polymerization 1500) instead of using 29 parts by weight of polyethylene glycol (#0000)
A tablet-shaped foaming bath agent was obtained in the same manner as in Example 1 except that 2Qiti portion was used.

The long-term storage stability and moldability of the tablet foaming bath agent thus obtained were determined in the same manner as in Example 1. The results are shown in Table 1.

Comparative Example 2 Polyethylene glycol (#600) used in Example 1
0) Instead of using 29 parts by weight, 29 parts by weight of hydroxypropylcellulose was used, and the tableting pressure was 150 kg/
A tablet-shaped effervescent bath agent was obtained in the same manner as in Example 1, except for c-binding.

Comparative Example 3 32 parts by weight of dry sodium bicarbonate and 1 part by weight of dry citric acid
After mixing 6 parts by weight of sodium sulfate with 2 parts by weight of sodium sulfate, 29 parts by weight of polyethylene glycol (#4000), 1 part by weight of fragrance, and 1 part by weight of coloring matter, 28 g of the mixture was mixed in the same manner as in Example 1. 150kg/
Key molding was carried out at a pressure of - to obtain a tablet-shaped foaming bath agent.

[Margins below] Table 1 [Effects of the Invention] As can be seen from the above results, the foaming bath agent of the present invention has excellent moldability and long-term storage stability. Furthermore, it is not only possible to mold foaming bath additives with a shape according to the target using extremely low molding pressure, but also to control the foaming duration during use by changing the type and amount of polyethylene glycol added. This has the effect that it can be adjusted to

Claims (1)

[Claims] 1. A foaming bath agent containing a carbonate treated with polyethylene glycol and an organic acid powder. 2. The foaming bath agent according to claim 1, wherein the organic acid powder is treated with polyethylene glycol.