JP3503841B2 - Solid tablet bath composition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath composition, and more particularly to a solid tablet type bath composition having a mild scent and capable of adjusting the dissolution time in water or hot water to be short.

[0002]

2. Description of the Related Art A bathing agent is generally a mixture of inorganic salts such as mirabilite, borax, sulfur, salt, carbonate and the like, which is combined with a fragrance, a coloring agent, a plant extract, an organic acid, etc. In addition, it stimulates blood circulation by giving an appropriate stimulus to the skin surface to improve fatigue recovery and metabolism. Among these bath agents, there is an effervescent bath agent that combines a carbonate and an organic acid, which generates bubbles of carbon dioxide gas in the bath water to enhance the feeling of relaxation and exhilaration and make bathing enjoyable. Have an effect.

On the other hand, there are liquids, powders, etc. as the bathing agent dosage form, but the solid tablet is used accurately for one dose,
It has the advantage of being compact and easy to handle. Therefore, solid tablet type bath agent compositions having various functions have been developed.

However, the solubility of the conventional solid tablet-type bath agent composition is not sufficient, and it has been desired that it dissolves more quickly. As a solution to this problem, rapid foaming is conceivable, but rapid foaming has a problem that the scenting at the time of dissolution becomes too sharp.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a solid tablet type bath preparation composition having a mild scent and capable of controlling the dissolution time in water or hot water to be short. .

[0006]

Means for Solving the Problems In view of such circumstances, the present inventor has conducted diligent research, and as a result, if a specific aromatic ester is added in addition to a carbonate and an organic acid as a foaming agent, the fragrance is improved. The present invention has been completed by finding that it is mild and that the dissolution time can be controlled to be short.

That is, the present invention provides the following general formula (1)

[0008]

[0009]

[Chemical 2]

[In the formula, R ¹ represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms or a group COOR ³ (wherein R ³ represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms), R
² represents an alkyl group having 1 to 10 carbon atoms], and a solid tablet type bath agent composition containing 0.1 to 10% by weight of an aromatic ester, a carbonate and an organic acid.

In this general formula (1), R ¹ , R ² and R ³
The alkyl group having 1 to 10 carbon atoms represented by may be linear or branched, and examples thereof include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group,
Examples thereof include isobutyl group, sec-butyl group, tert-butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group and decyl group.

Among the aromatic esters represented by the general formula (1), particularly preferred are ethyl benzoate, methyl salicylate, diethyl phthalate, dibutyl phthalate and dioctyl phthalate.

In the present invention, the aromatic esters may be used alone or in admixture of two or more, and the blending amount thereof is 0.1 to 10% by weight, particularly 0.2 to 2% by weight based on the total composition. % Is preferable. If the content is less than 0.1% by weight, the effect of the present invention may not be sufficiently obtained, and if it exceeds 10% by weight, formulation may become difficult, which is not preferable.

A carbonate and an organic acid are added to the bath agent composition of the present invention in order to impart foaming properties, but these are not particularly limited as long as they are usually used in bath agents. Examples of the carbonate used here include sodium hydrogen carbonate, sodium carbonate, potassium hydrogen carbonate, potassium carbonate, calcium carbonate, magnesium carbonate, sodium sesquicarbonate and the like. The carbonates may be used alone or in combination of two or more, and the compounding amount thereof is 5 to 8 in the total composition.
It is preferably 0% by weight, particularly preferably 10 to 60% by weight.

Examples of the organic acid include citric acid,
Examples thereof include succinic acid, fumaric acid, malic acid and tartaric acid. The organic acids may be used alone or in combination of two or more, and the compounding amount thereof is 10 to 80% by weight, particularly 15 to 6%.
It is preferably 0% by weight.

The bath agent composition of the present invention may contain various optional components usually used in bath agents in addition to the above-mentioned essential components. Examples of such components include the following.

(A) Excipients Monosaccharides such as glucose, sucrose, lactose and sorbit, disaccharides, starches and the like. (A) Binders Dextrin, carrageenan, cellulose derivatives such as methyl cellulose, polyethylene glycol and the like. (C) Disintegrant starch, carboxymethyl cellulose and the like. (D) Others Lubricants such as magnesium stearate, colorants such as tar dyes, adsorbents, neutralizing agents, flavoring agents, flavoring agents, and other components necessary for formulation.

The bath agent composition of the present invention can be produced by mixing the above components in a conventional method and tableting.

Since the obtained bath agent composition of the present invention is a tablet, it may be placed in a bath water (water) and then bathed. Here, when the composition of the present invention is added to the bath water,
The pH is preferably weakly acidic (particularly 4-6.5). This is because under weakly acidic conditions, carbon dioxide generated by the reaction between the carbonate and the organic acid dissolves in water as it is to exert a blood circulation promoting action.

[0020]

INDUSTRIAL APPLICABILITY The solid tablet-type bath agent composition of the present invention has a mild scent from bath water (water) and can control the dissolution time in water or hot water to be short.

[0021]

The present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

Example 1 The components shown in Table 1 were mixed using a Nauta mixer (25 liter capacity), and 50 g of this mixture was used with a hydraulic manual tableting machine (tablet diameter Φ50 mm) to obtain a constant degree of compression. To achieve this, the tableting pressure was 200 kg / cm ² , and the tablet height was 16.7 mm.
To obtain each solid tablet type bath agent. Inventive product No. Put each tablet of 1 to 5 and Comparative products 1 to 3 into a general household bathtub filled with 150 liters of hot water at 40 ° C., evaluate the scent at the time of tablet dissolution by a specialized panelist, and until dissolution is completed The time was measured. The results are shown in Table 1.

(Aroma evaluation standard) ○: Mild, △: Good, X: Strong.

[0024]

[Table 1]

Example 2 The components shown in Table 2 were mixed using a Nauta mixer (25 liter capacity), and 50 g of this mixture was used with a hydraulic manual tableting machine (tablet diameter Φ50 mm) to keep the degree of compression constant. To achieve this, the tableting pressure was 200 kg / cm ² , and the tablet height was 16.7 mm.
To obtain each solid tablet type bath agent. Inventive product No. Each of the tablets of 6 to 7 and the comparative product 4 was put into a general domestic bathtub filled with 150 liters of hot water at 40 ° C., the scent at the time of tablet dissolution was evaluated by a specialized panel, and the time until the dissolution was completed was evaluated. It was measured. The results are shown in Table 2.

(Aroma evaluation standard) ○: Mild, △: Good, X: Strong.

[0027]

[Table 2]

As is clear from Tables 1 and 2, in addition to the carbonate and the organic acid, 0.1 to 10 aromatic esters are added.
By blending the composition in a weight percentage, a tablet type bath preparation having a mild scent and a shortened dissolution time was obtained.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Watanabe Okawa 20 Tohokushiba, Kamisu-cho, Kashima-gun, Ibaraki Prefecture Kao Institute of Stock Companies (72) Inventor Hirotaka Sato 2606 Akabane, Kai-cho, Haga-gun, Tochigi Institute of Kao Stock Companies (72) Inventor Hidenori Man, 2606, Akabane, Kaiga-cho, Haga-gun, Tochigi Prefecture Kao Co., Ltd. (56) References JP-A-3-109317 (JP, A) JP-A-5-17338 (JP, A) Chemical Dictionary 8, Japan , Kyoritsu Publishing Co., Ltd./Masao Nanjo, February 15, 1987, reduced edition, 30th edition, p. 779, Chemical Dictionary 7, Japan, Kyoritsu Publishing Co., Ltd./Masao Nanjo, February 15, 1987, reduction 30th printing press, page 825 (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (2)

(57) [Claims] 1. The following general formula (1): [In the formula, R ¹ represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms or a group COOR ³ (wherein R ³ represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms), and R ² represents Carbon number 1
A solid tablet type bath agent composition containing 0.1 to 10% by weight of an aromatic ester represented by the formula 10 to 10] and a carbonate and an organic acid. 2. The solid tablet type bath preparation composition according to claim 1, wherein the aromatic ester is one or more selected from ethyl benzoate, methyl salicylate, diethyl phthalate, dibutyl phthalate and dioctyl phthalate. object.