JP2008024612A - Bath preparation composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bath preparation composition capable of preparing hot bath water enabling skin slipperiness touch to be sensed in bathing even without being made alkaline, and enabling hot water surface clearness to be maintained as well. <P>SOLUTION: The bath preparation composition comprises 35-100 mass% of a water-soluble salt of a 3-10C polycarboxylic acid (including a hydroxycarboxylic acid). Normally, this bath preparation composition is to be used with hot bath water at neutral pH levels. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bath agent composition, and more particularly to a bath agent composition capable of perceiving (sensing) a smooth skin feeling when bathing in a hot spring.

  In recent years, a variety of bath preparation compositions that can perceive a smooth feeling at the time of bathing in public baths and home baths and obtain a natural hot spring simulated sensation have been put on the market and are widely used. The mainstream of the bath agent composition has heretofore been bath water that can perceive a feeling of smooth skin at the time of bathing by making the bath water alkaline with mainly alkaline inorganic salts.

  However, alkaline bath water was liable to cause skin dryness or skin roughness after bathing. In addition, even if a large amount of neutral inorganic salt is added, it becomes a bath water that can perceive a smooth feeling when bathing. However, it is necessary to add a large amount and the injectability is inferior (especially in a public bath. When using the circulation route). Even if water-insoluble inorganic fine particles are added, it becomes a bath water that can perceive a smooth feeling when bathing, but it is not suitable when turbidity occurs in the bath water and a clear feeling is preferred. Sinks to the bottom of the bathtub and makes the bathtub more easily soiled.

  For this reason, the bath agent composition which consists of a cationized polymer (refer patent document 1 etc.), and the bath agent composition which added the cationized polymer in order to supplement the roughness resulting from alkaline inorganic salt (refer patent document 2 etc.) Has been proposed.

  However, the cationized polymer tends to generate bubbles on the surface of the bath, and it is difficult to cope with the case where the clarification of the bath is preferred, as in the case of the fine particles of the water-insoluble inorganic substance.

In addition, although the objectives are completely different and do not affect the patentability of the present invention, Patent Documents 3 and 4 and the like exist as bath agent compositions containing an organic acid as an essential component.
JP-A-9-315951 JP 2001-10949 A Japanese Patent Laid-Open No. 9-241151 JP 2000-229841 A

  In view of the above, an object of the present invention is to provide a bath preparation composition that can perceive a smooth feeling of the skin at the time of bathing and can maintain the clarification of the hot water surface without being alkaline.

  As a result of diligent development to solve the above-mentioned problems, the inventors of the present invention have provided smooth skin smoothness at the time of bathing even if it is not made alkaline by using a bath agent composition mainly composed of a specific polyvalent carboxylate. It was discovered that a bath water with a perceivable feeling could be easily prepared, and a solid or aqueous bath preparation composition was conceived.

  The composition of the solid bath agent composition is characterized by containing 35 to 100% by mass of a water-soluble salt of a polyvalent carboxylic acid having 3 to 10 carbon atoms (including hydroxycarboxylic acid, the same shall apply hereinafter), The aqueous bath composition contains 1 to 65% by mass of a water-soluble salt of a polyvalent carboxylic acid having 3 to 10 carbon atoms.

  And in the case of aqueous bath agent composition, it can consist of C3-C10 polyvalent carboxylic acid and 0.8-1.2 equivalent of alkaline compound with respect to this polyvalent carboxylic acid. In the case of an aqueous bath agent composition, the pH is 3 to 13.

  And when using each said bath agent composition in bath water, it is used so that the pH of bath water may be 5-10, or the density | concentration in the bath water of polyvalent carboxylic acid is 200-10000 mg / Put it to L and use it.

  Further, in the case of an aqueous bath agent composition, it is preferably introduced through an injection device.

  Even if the bath agent composition of the present invention does not make the liquidity of the bath water alkaline, and in a small amount (depending on the type of the water-soluble salt of the polyvalent carboxylic acid, the concentration in the bath water is small 200 mg / L), bath water that can perceive a smooth feeling when bathing can be prepared.

  Therefore, as a result of being able to perceive the smoothness of the skin at the time of bathing with a neutral or slightly acidic bath, the skin after bathing due to bathing in an alkaline bath does not cause dryness or roughness.

  Moreover, it does not take time to dissolve and is economical. Further, no bubbles are generated on the surface of the bath, and the clarity of the bath can be maintained.

  Furthermore, since it dissolves completely, the bath water does not become cloudy and insoluble matter does not settle to the bottom of the bath. In addition, even when hard water containing calcium ions or magnesium ions is used for bath water, there is no possibility of generating scale due to the chelating effect of the aliphatic polyvalent carboxylate.

  This not only prevents the bath and hot water circulation pipes from becoming dirty with the scale, but also prevents the clogging of the injection nozzle due to the scale even when using an injection device for the bath agent composition. There is an effect that the bath agent composition can be injected.

  Hereinafter, the means (configuration) of the present invention will be described in detail. In the following description, “%” indicating the blending amount means “% by mass” unless otherwise specified.

  The solid or aqueous (liquid) bath agent composition of the present invention contains a water-soluble salt of a polyvalent carboxylic acid having 3 to 10 carbon atoms (including hydroxycarboxylic acid, the same shall apply hereinafter) as an essential component. The polyvalent carboxylic acid is an organic carboxylic acid having 2 or more (usually 2 to 3) carboxylic acid groups in one molecule. Hereinafter, the above “organic acid salt of polyvalent carboxylic acid having 3 to 10 carbon atoms” is referred to as “specific organic acid salt”.

  As the polyvalent carboxylic acid constituting the specific organic acid salt, di-tricarboxylic acid and di-trihydroxycarboxylic acid having 3 to 10 carbon atoms can be used.

  Specifically, saturated dicarboxylic acids such as malonic acid (C3), succinic acid (C4), glutaric acid (C5), adipic acid (C6); fumaric acid (trans-butenedioic acid), maleic acid (cis-butene) Unsaturated dicarboxylic acids such as diacid); citric acid (2-hydroxy-1,2,3-tricarboxylic acid), malic acid (2-hydroxybutanenic acid), tartaric acid (2,3-dihydroxybutanenic acid), etc. Mention may be made of hydroxycarboxylic acids.

  Of these, citric acid, malic acid, tartaric acid, and maleic acid having high solubility in water are desirable. These can be used alone or in combination of two or more.

  Moreover, sodium, potassium, magnesium, calcium, ammonium, monoethanolamine, triethanolamine etc. can be mentioned as a counter ion of polyvalent carboxylic acid.

  Here, “aqueous” includes not only water but also a case where a water-soluble solvent such as alcohol that is completely mixed with a small amount of water is used as a dispersion medium.

  Of these, alkali metals such as sodium and potassium are desirable.

  Specific examples of the specific organic acid salt include sodium citrate, potassium citrate, sodium malate, triethanolamine malate and the like. Among these, sodium citrate and potassium citrate are particularly preferable. This is because it is easy to obtain the desired smooth skin feeling.

  Moreover, in the case of an aqueous bath agent composition, the composition may contain a polyvalent carboxylic acid and an alkaline compound in an amount that substantially neutralizes the polyvalent carboxylic acid. That is, it is prepared by dissolving a polyvalent carboxylic acid in hot water and adjusting the pH while adding an alkaline compound. By adjusting the pH of the aqueous bath agent composition in this way, it becomes easy to freely control the liquidity (pH) of the bath water when it is poured into the bath water from acidic to alkaline. For example, if the liquidity (pH) becomes alkaline and there is a concern that skin dryness or skin rash may occur after bathing, the liquidity can be changed from acidic to neutral. That is, it is possible to perceive a smooth feeling even if the liquidity of the bath water is neutral or acidic.

  The alkali compound used for neutralizing the organic acid is not particularly limited as long as it is water-soluble and does not interfere with the present invention. Specific examples include inorganic bases such as sodium hydroxide, potassium hydroxide and ammonia, and organic bases such as monoethanolamine and triethanolamine. Of these, sodium hydroxide and potassium hydroxide having high solubility in water of the specific organic acid salt to be produced are particularly preferable. These are contained alone or in combination of two or more.

  In addition to the above essential components, the bath agent composition of the present invention is a component blended in a normal bath agent composition, for example, inorganic salts, surfactants, alcohols, water-soluble polymers, thickeners, oily components. , Herbal medicines, plant extracts, hot spring water, anti-inflammatory agents, inorganic acids, enzymes, amino acids, vitamins, clouding agents, ultraviolet absorbers, chelating agents, preservatives, fragrances, pigments and the like can be appropriately blended. As the inorganic salts, those exemplified below can be preferably used.

"Sodium bicarbonate, sodium carbonate, potassium carbonate, calcium carbonate, magnesium carbonate, sodium sesquicarbonate, boric acid, sodium borate, sodium silicate, sodium metasilicate, sodium orthosilicate, sodium pyrophosphate, sodium tripolyphosphate, sodium sulfate , Sodium chloride, potassium chloride, magnesium chloride, calcium chloride, aluminum sulfate, potassium aluminum sulfate, magnesium sulfate, potassium nitrate, sodium nitrate, ammonium chloride, ferrous sulfate, ferric sulfate, manganese chloride, etc. "
The content of the specific organic acid salt in the bath agent composition varies slightly depending on the type of the organic acid salt, but in the case of a solid bath agent composition, it is about 35 to 100%, more preferably about 50 to 100%, Furthermore, about 70 to 100% is preferable. The dosage form of the solid bath agent assembly includes all solid dosage forms such as powders, granules, fine granules, pellets, and blocking agents.

  On the other hand, in the case of an aqueous bath agent composition (aqueous solvent), it is preferably about 1 to 65%, more preferably about 10 to 65%, and still more preferably about 20 to 65%.

  In the composition for bathing agent of the present invention, if the content of the specific organic acid salt is too small, in order to perceive the desired smooth skin feeling, the bathing agent composition has to be put in a large amount of bath water, and it dissolves. It takes time and effort. In the case of a solid bath agent composition, since the ratio of components other than the specific organic acid salt in the present invention increases, it is not economical to add a large amount.

  Next, the usage aspect of the bath agent composition of the said embodiment is demonstrated.

  The input amount varies slightly depending on the type of the specific organic acid salt and the combination with other inorganic salts. The concentration of the specific organic acid salt is about 200 to 10000 mg / L in bath water (bath water), further about 200 to 3000 mg / L, and further considering the economy and workability, it is further about 200. It is preferable to add so that it may become -1000 mg / L. The amount of the input allows a person with normal feeling to perceive a smooth feeling like a hot spring when taking a bath.

  In particular, the aqueous bath agent composition of the present invention is excellent in the charging property of the bath agent composition using an injection device.

  Injecting devices 10A and 10B shown in FIGS. 1 (A) and 1 (B), tank 1 is filled with a bath agent composition stock solution or an aqueous solution obtained by appropriately diluting the stock solution with water, and metering pump 3 or valve 5 is installed. Used to continuously inject the bath water flowing through the bath water circulation / supply pipe 6. By injecting continuously, it is easy to maintain the optimum concentration of the bath composition in the bath water. In the examples, 2 is a bath agent composition or a diluted solution thereof, and 7 is bath water.

  Such a device is used in a health land, a super public bath, etc. in which a large bathtub equipped with a bath water circulation device is installed.

  In addition, as shown in FIGS. 2 (A) and 2 (B), injection devices 11A and 11B having a novel concept can also be used.

  The injection devices 11A and 11B connect the bath agent composition injection pipe 4 directly to the container 9 filled with the bath agent composition stock solution at the manufacturing site, and inject using the pump 3 or the valve 5 or the like. . In this case, a tank is not required and the bath agent composition is stored in a sealed state until just before use, and is hygienic.

  In the bath agent composition of the present invention, scales such as calcium carbonate and magnesium carbonate do not occur even when the water used for dissolving or diluting in water is hard water containing calcium ions and magnesium ions.

  For this reason, scales, such as calcium carbonate and magnesium carbonate, do not accumulate in the chemical tank of the injection device, and the injection nozzle is not clogged with the scale.

  Hereinafter, although an Example and a comparative example demonstrate in detail, this invention is not limited to these.

<Examples 1-5, Comparative Examples 1-3>
Based on the formulation shown in Table 1, the mixture was prepared by conventional blending means to prepare bath compositions for each of the examples and comparative examples. Each bath agent composition was dissolved so that the solid content concentration of each bath agent composition in the bath water was 300 mg / L to obtain each bath water for bathing. The amount of bath water was 200 L, and the hot water temperature was set to 40 ° C.

  Paneler-10 (5 men and women, 20 to 50 years old) bathed in each bath for 5 minutes and evaluated the smoothness of the skin when bathing.

  The evaluation criteria for the feeling of smooth skin are as follows, and the average value of 10 persons is shown in Table 1 as a result.

From the results shown in Table 1, the bath preparation composition of each example of the present invention has a very smooth skin feeling when bathing compared to the bath preparation composition mainly composed of the inorganic salt of the comparative example. It was recognized that
(Smooth skin feeling when bathing)
3: I felt a very smooth feeling of smooth skin 2: I felt a smooth feeling of smooth skin 1: I felt a little smooth feeling of smooth skin 0: I almost felt no smooth feeling of smooth skin

また、実施例３に示した浴用剤組成物を水量１０ｍ³の浴湯、浴湯中の固形分濃度約３００mg／Ｌとなるように注入装置を用いて持続的に注入した。この状態で、入浴時の肌つるつる感をパネラー２０名（男女各１０名、２０〜５０歳）に評価してもらった。その結果、１８人から「肌つるつる感を非常に強く感じた。」との、２人から「肌つるつる感を感じた。」の、各回答が得られた。

Moreover, the bath agent composition shown in Example 3 was continuously injected using an injection device so that the water concentration was 10 m ³ and the solid concentration in the bath water was about 300 mg / L. In this state, 20 panelists (10 men and women, 20 to 50 years old) evaluated the smoothness of the skin when taking a bath. As a result, each of the 18 respondents, “I felt a very smooth skin feeling,” and 2 responded, “I felt a smooth skin feeling.”

  In addition, the bath agent composition shown in Example 3 was added to bath water having a calcium ion concentration of 50 mg / L before the bath agent composition was added so that the solid content concentration was 300 mg / L. As a result, scale was not generated, bubbles were not generated on the surface of the bath, and the clarity of the bath was maintained.

(A) * (B) is a model figure which shows the injection | throwing-in method to the bath water using the conventional injection | pouring apparatus for the bath agent composition of this invention. (A) * (B) is also a model figure which shows the injection | throwing-in method to bath water using the injection apparatus of a novel idea.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tank in injection apparatus 2 Bath agent composition or its dilution liquid 3 Metering pump 4 Bath agent composition injection piping 5 Valve 6 Circulation / replenishment piping for bath 7 Bath water 8 Container of bath agent composition filled in manufacturing site 10A 10B injection device 11A, 11B injection device

Claims (6)

  A solid bath agent composition comprising 35 to 100% by mass of a water-soluble salt of a polyvalent carboxylic acid having 3 to 10 carbon atoms (including hydroxycarboxylic acid, the same shall apply hereinafter).   An aqueous bath composition comprising 1 to 65% by mass of a water-soluble salt of a polycarboxylic acid having 3 to 10 carbon atoms.   3. The aqueous bath composition according to claim 2, comprising a polyvalent carboxylic acid having 3 to 10 carbon atoms and an alkaline compound in an amount of 0.8 to 1.2 equivalents relative to the polyvalent carboxylic acid.   When the solid bath agent composition or the aqueous bath agent composition according to claim 1, 2 or 3 is put into bath water and used, the bath water is poured so that the pH of the bath water is 5-10. A method for using a bath agent composition.   When the solid bath agent composition or the aqueous bath agent composition according to claim 1, 2 or 3 is used by putting it in a bath water, the concentration of the polyvalent carboxylic acid in the bath water is 200 to 10,000 mg / L. The method of using a bath agent composition, wherein   6. The aqueous bath preparation composition according to claim 2 or 3, wherein the aqueous bath agent composition is charged into a bath water and used through an injection device incorporated in a bath water circulation system. Of using the bath composition of the present invention.

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