JPS62205018A - Foamable bath agent - Google Patents

Abstract

PURPOSE:The titled bath agent, obtained by adding polyethylene glycol as a stabilizer for a colorant to a foamable bath agent composition containing the colorant, an organic acid and carbonate, capable of preventing reaction of the organic acid with carbonate during the preservation and having good foaming and coloring in bath water. CONSTITUTION:A foamable bath agent obtained by adding polyethylene glycol as a stabilizer for a colorant to a foamable bath agent composition containing the colorant, an organic acid and carbonate. The polyethylene glycol used must be a solid and has >=1,000mol.wt., but polyethylene glycol having >=4,000mol.wt. and about 55-65 deg.C melting point is preferably used (more preferably the molecular weight thereof is >=6,000). The above-mentioned bath agent is produced by melting polyethylene while heating, adding 5-20wt% uranine, etc., which is a colorant, melting or dispersing the uranine, etc., cooling the resultant blend to give colored polyethylene and adding an organic acid, carbonate, perfume, etc., thereto.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a foaming bath agent with excellent stability.

[Conventional technology]

Conventionally, bath additives generally contain carbonates such as anhydrous sodium sulfate, sodium bicarbonate, and sodium sesquicarbonate, other sand additives, fragrances, and coloring agents, including yellow as a pigment for pharmaceuticals, quasi-drugs, and cosmetics under the Pharmaceutical Affairs Law. No. 202 No. 1 (
Uranine), Blue No. 1 (Brilliant Mill Blue FCI
), Blue No. 2 (indigo carmine), Yellow No. 4 (tartrazine), Green No. 204 (pyranine), etc. are used. Particularly yellow 202@1 that dissolves in water and emits fluorescence.
Or, many use green No. 204. In the case of such bath additives, the composition is mostly alkaline. Therefore, there is no problem with Yellow No. 202 No. 1 or Green No. 204, which develops color in alkalinity and disappears in acidity, and bath additives containing these colorants that do not contain acidic substances will lose their original color when used in bath water. This function allows you to color your bathroom beautifully. On the other hand, recently there are foaming bath agents that combine carbonates and organic acids.
These react with carbonates and organic acids in the bath, producing carbon dioxide gas. In this effervescent bath agent, sodium bicarbonate, sodium sesquicarbonate, etc. are used as carbonates, and citric acid, which is an organic acid, is used as acids.
D-tartaric acid, malic acid, succinic acid, fumaric acid, etc. are used, and spices, fragrances, colorants, etc. are blended. In addition, in order to improve the storage stability of these foaming bath agents, for example, foaming bath agents containing carbonates and organic acids are blended with magnesium oxide and/or sodium aluminate as stabilizers. It is known from the publication No. 59-70610.

[Problem that the invention seeks to solve]

This foaming bath additive uses a coloring agent that is not affected by acids. In other words, coloring agents such as uranine and pyranine, which are alkaline and dissolve in water and emit beautiful green fluorescence, are often used in general bath additives and account for the majority of the bath additive market, but they are affected by acids. This means that it cannot be used because it loses color rendering properties. In other words, in the case of foaming bath additives, the coloring agents such as uranine and pyranine come into contact with the acid used and change into water-insoluble pigments during storage, and will not develop color unless they are made alkaline. . In addition, even when this bath agent is stored for a short time and is not easily affected by acid, when this bath agent is used in bath water, the acid dissolution [15]. , tartaric acid, succinic acid, etc., the color rendering properties of the coloring agent are lost.

[Means for solving problems]

Therefore, the present inventors conducted extensive research on the use of colorants that are adversely affected by these acids in foaming bath additives, and found that the use of polyethylene glycol brought about good results, and completed the present invention. This is what I did. That is, the present invention is a foaming bath agent characterized in that polyethylene glycol is added as a colorant stabilizer to a foaming bath composition containing a colorant, an organic acid, and a carbonate.

The coloring agent used in the effervescent bath agent of the present invention is a fluorescent dye that has been used in conventional general bath agents and a dye that has been used in known effervescent bath agents, but is particularly preferred. These are pigments such as uranine and pyranine that lose their color rendering properties when exposed to acids.

The organic acids and carbonates used in the present invention are those used in known foaming bath agents, and the acids include citric acid, d-tartaric acid, malic acid, succinic acid, fumaric acid, etc. Examples of the carbonate include sodium hydrogen carbonate and sodium sesquicarbonate.

The polyethylene glycol used in the present invention needs to be solid and has a molecular weight of 1,000 or more, preferably 14,000 or more, and a melting point of about 55°C to 6°C.
A temperature of 5°C can be used. That is, it is solid at room temperature,
From the viewpoint of low endothermic property and high melting point as much as possible, those having a molecular weight of 6,000 or more are particularly preferred.

The effervescent bath preparation of the present invention can be applied to molded products such as powders, granules, and tablets. Of course, fragrances, excipients for molding, binders, moisture absorption inhibitors, etc. can also be added as necessary.

The foaming bath agent of the present invention can be obtained by the following manufacturing method.

(1) Polyethylene is heated and melted, and a coloring agent such as uranine or pyranine is added thereto in a proportion of 5 to 20 Φ and melted or dispersed; then it is cooled, pulverized or sized appropriately, or heated Using the jet side method, colored polyethylene is obtained in the form of drum-cooled flakes. An organic acid, a rock salt, and, if necessary, an additive such as a fragrance are added to this to form a foaming bath agent in a desired form.

(2) Add a coloring agent, an organic acid, a carbonate, and anhydrous sodium sulfate to make it easier to coarsely grind the polyethylene glycol melt, stir, and then use the method described in (1) above to form a foaming bath agent. get.

〔Effect of the invention〕

In the thus obtained foaming bath agent of the present invention, the presence of polyethylene glycol prevents the reaction between the organic acid and the carbonate during storage, thereby ensuring the stability of the foaming bath agent of the present invention. It is something that will be done.

〔Example〕

The present invention will be explained below with reference to Examples. Note that the parts in the examples are 1,000 parts, and the molecular length of polyethylene glycol is, for example, 6000, as shown in J of (#6000).

Example 1 Polyethylene glycol (#
6000) Add 10 parts of yellow 202@1 (uranine) to 90 parts (melting temperature 60°C to 70°C), dissolve it, cool it, add 5 parts of the crushed product, and mix thoroughly.
It was molded into a tablet with a diameter of 5 cm and a thickness of 1 m.

This tablet was sealed with an aluminum-laminated polyethylene film and stored at a temperature of 38° C. and a humidity of 80% for 3 months. When the tablet was placed in a bath, not only foaming but also sufficient color development of the coloring agent was observed.

For comparison, polyethylene glycol (#6000
) When the effervescent bath additives were tabletted with the same composition except that they were not used, the coloring agent did not develop sufficiently when placed in bath water.

Example 2 0.5 part of Yellow 202 1 was added to 5 parts of molten polyethylene glycol (#6000) (melting temperature 70°C), and 1 to 0 parts of thulium hydrogen carbonate were added, thoroughly mixed, cooled, and then ground. . To this pulverized material, add 2 ml of anhydrous sodium sulfate.
0 parts, 40 parts of succinic acid, and 1 part of fragrance were added, thoroughly mixed and pulverized to form powder of the foaming bath agent of the present invention. 20 parts of this powder was placed in a plastic bag laminated with aluminum, measuring 15 parts m x 15 cm, and stored at a temperature of 38°C ± 1°C and humidity of 75% for 4 months, and then added to bath water, and it foamed well. The color development was also satisfactory. On the other hand, the bags that did not use polyethylene glycol showed expansion after one week of trial training during storage.

Example 3 10 parts of polyethylene glycol (#6000) and (#
11000) eutectic with 5 parts (melt humidity 60-70
℃) were added with 2 parts of Green 204 @ (pyranine) and 1 part of anhydrous sodium carbonate, mixed well, and then made into a fine powder.

To this fine powder were added 35 parts of sodium hydrogen carbonate, 30 parts of d-tartaric acid, 3 parts of magnesium oxide, and 1 part of fragrance, and after thoroughly mixing, the mixture was compressed into tablets and packaged in the same manner as in Example 1.

Further, as in Example 2, the foaming bath additive was sealed in an aluminum laminate film as a powder and subjected to a storage test in the same manner as in Example 2. When the foaming bath additive was placed in a bath, it showed the effect of achieving the original purpose in both foaming and coloring.

Example 4 25 parts of anhydrous sodium carbonate and 40 parts of anhydrous sodium sulfate were mixed with 30 parts of water, hot air dried at 120°C, and pulverized. 30 parts of old malic acid and 1 part of fragrance were added and mixed. . Apart from this, polyethylene glycol (#60
00) was melted at 60° C. to 70° C., 20 parts of Yellow No. 202 No. 1 was added, and the mixture was cooled and pulverized with thorough stirring. Three parts of this colored pulverized material was added to the previously prepared mixture and mixed well, to form a powdered foaming bath agent.

This was packaged in the same manner as in Example 2, and after a storage test was performed, it was placed in bath water, and the color rendering properties of the colorant in the foaming bath composition of the present invention showed favorable results. For comparison, a foaming bath agent prepared in exactly the same manner as in this example except that polyethylene glycol (#6000) was not used had extremely poor color rendering properties due to the influence of acid.

Hodogaya Chemical Industry Co., Ltd.

Claims (1)

[Claims] A foaming bath agent characterized in that polyethylene glycol is added as a colorant stabilizer to a foaming bath agent composition containing a colorant, an organic acid, and a carbonate.