JP5483938B2 - Granular foam bath agent - Google Patents

Description

  The present invention relates to a granular bath agent, and more particularly to a granular foaming bath agent.

  A bath agent containing a carbonate and an organic acid is widely known as an excellent bath agent because it generates bubbles of carbon dioxide gas in the bath water and the blood circulation promoting effect by the carbon dioxide gas is obtained. In such a bath preparation, as a means for increasing the concentration of carbon dioxide gas generated in the bath water, in order to dissolve the bath preparation in the vicinity of the bottom of the bathtub, the form is not granular but a relatively large tablet type. There are many cases.

  On the other hand, granular foaming bath agent, which is another form of bath agent, does not require special manufacturing technology such as tableting technology and generally has a short dissolution time. Various studies have been conducted. For example, a technique for dissolving carbon dioxide gas in a short time by controlling the particle diameter of carbonate or organic acid (Patent Documents 1 to 3), or a technique for coating carbonate with a water-soluble polymer (Patent Document) 4) etc. have been reported. However, these bath preparations have not been studied at all for the properties of foam.

  In addition, as a technique for increasing the effect of warm bath by reducing foaming bubbles, it contains two or more carbonates and organic acids having different dissolution patterns in bath water, and at least one of the carbonates substantially reaches the bottom of the bathtub. A granular foam bathing agent (Patent Document 5), which is a carbonate that settles without dissolving, has been reported.

JP-A-11-47220 JP 2004-131455 A JP 2005-298454 A Japanese Patent Laid-Open No. 11-47221 JP 2000-309523 A

However, since this granular foaming bath has a goal of shortening the dissolution time, there is room for investigation in that extremely fine carbon dioxide bubbles can be obtained for a sufficiently long time.
Therefore, the problem of the present invention is that the bath water appearance is not only extremely excellent but also sufficiently high because it is possible to maintain a very fine carbon dioxide gas bubble for a sufficiently long time so that the bath water appears white and cloudy. An object of the present invention is to provide a granular foaming bath agent capable of obtaining a carbon dioxide concentration and having no disadvantages such as dissolution residue.

  Therefore, in order to solve the above-mentioned problems, the present inventors have studied various techniques for holding carbon dioxide bubbles generated by carbonate and organic acid in bath water. As a result, the present inventors have mainly used a dialkali metal carbonate as a carbonate. In addition, when tartaric acid or tartaric acid and malic acid as organic acids are added to the bath water in an independent particle state, the bubbles of carbon dioxide generated in the bath water are unexpectedly extremely fine, and The generation time of the extremely fine bubbles can be maintained for a long time, and the entire bath tub appears to be white and cloudy with bubbles, so that a granular foaming bath agent having a good bath water appearance can be obtained and sufficiently high. It has been found that a carbon dioxide concentration can be obtained.

That is, the present invention is a granular foaming bath agent containing a carbonate and an organic acid,
The following components (A) and (B):
(A) 20 to 70% by mass of a dialkali metal carbonate having an average particle size of 100 to 750 μm, and (B) tartaric acid, or 30 to 80% by mass of tartaric acid and malic acid,
A granular foaming bath agent in which the amount of dialkali metal carbonate in the total amount of carbonate is 75 to 100% by mass is provided.
In the granular foaming bath agent of the present invention, the components (A) and (B) are present in independent particle states. Here, “existing in an independent particle state” means that the component (A) and the component (B), which are in an independent particle state, are mixed in the bath preparation. It includes what are called shapes and granules. In addition, this is a mixture of carbonate particles, organic acid particles and other particles as they are without coating or granulation, etc., or those obtained by individually coating or granulating individual components and mixing them. It includes a mixture of some or all of the components, followed by appropriate coating or granulation and further mixing with the remaining components.

  When the granular foaming bath agent of the present invention is added to bath water, extremely fine bubbles are generated so that the entire bathtub appears white and cloudy, and the foaming duration is sufficiently long. Therefore, since the generated carbon dioxide is sufficiently dissolved in the bath water, it has an advantageous effect on the amount of carbon dioxide dissolved in the bath water, blood circulation promotion effect, warmth feeling, and white and cloudy appearance due to extremely fine bubbles Thus, a comfortable bath feeling can be obtained immediately after the bath agent is added. Further, a white turbid bath effect can be obtained without adding an oil agent, a surfactant, an inorganic powder or the like as a white turbid agent. That is, although the white turbid bathing effect is obtained, the white turbidity is caused by carbon dioxide gas, so that the bathtub is not soiled.

The granular foamable bathing agent of the present invention contains (A) a dialkali metal carbonate in an amount of 20 to 70% by mass in the bathing agent from the point that the generated bubbles of carbon dioxide gas become so fine that they appear white and cloudy. To do. The dialkali metal carbonate is a carbonate having two alkali metals among carbonates, and examples thereof include sodium carbonate and potassium carbonate, with sodium carbonate (Na ₂ CO ₃ ) being particularly preferred.

  In addition, the content of the dialkali metal carbonate salt in the bath preparation is 30 to 60% by mass, from the point of obtaining carbon dioxide generation amount and fine bubbles so that the whole bath looks white and cloudy. 35-50 mass% is especially preferable. The granular foaming bath agent of the present invention may contain a carbonate other than the dialkali metal carbonate, for example, sodium bicarbonate (bicarbonate) which is a bicarbonate, a divalent metal carbonate, etc. In terms of generating bubbles, the amount of dialkali metal carbonate in the total amount of carbonate is 75 to 100% by mass, more preferably 80 to 100% by mass, and particularly preferably 85 to 100% by mass. In particular, when the amount of hydrogen carbonate in the carbonate increases, there is a tendency to form large bubbles. For this reason, in order to suppress generation | occurrence | production of the big bubble of a carbon dioxide gas and to make it a fine bubble which exhibits a cloudy state, the amount of sodium hydrogen carbonate in the carbonate whole quantity is less than 10 mass%, Furthermore, less than 5 mass%, especially It is preferable that it does not contain sodium hydrogencarbonate substantially.

The average particle diameter of the dialkali metal carbonate is preferably from 100 to 750 μm, more preferably from 200 to 600 μm, particularly preferably from 250 to 500 μm, from the viewpoints of finer foam, duration of foam, sedimentation and the like. The average particle diameter is measured as follows.
Sieve: JIS standard sieve φ200mm
Opening: From the upper stage, a receiver is provided under a sieve having openings of 2000 μm, 1400 μm, 1000 μm, 710 μm, 500 μm, 355 μm, 250 μm, 180 μm, 125 μm, 90 μm, 63 μm and 45 μm, respectively.
Shaker: Sieve shaker Ro-TAP SHAKER DB type (HEIKO SEISAKUSHO)
Method: Place 50 g of sample on a 2000 μm sieve and classify with a sieve shaker for 5 minutes. The mass of the particles remaining on each sieve and the receiver is measured, and the mass ratio (%) of the particles on each sieve is calculated. From the receiver, the mass ratio of the particles on the sieve having a small mesh is accumulated, and the particle size at which the total becomes 50% is defined as the average particle size.

  In the granular foamable bath agent of the present invention, in addition to using a specific carbonate, adding tartaric acid, or tartaric acid and malic acid as an organic acid causes the entire bath water to become cloudy with bubbles of carbon dioxide gas. This is important in terms of miniaturization. In the granular foaming bath agent of the present invention, the mass ratio of tartaric acid and malic acid is 100: 0 to 1:99 from the viewpoint of obtaining fine bubbles, the sustainability of fine bubbles and the storage stability. Further, 100: 0 to 80:20, particularly 100: 0 to 50:50 is preferable. On the other hand, in general foaming bath agents, succinic acid, fumaric acid, and the like are widely used as organic acids that can be combined with carbonates, but these organic acids cannot provide sufficiently fine bubbles. Therefore, the granular foaming bath agent of the present invention contains substantially no organic acid other than tartaric acid and malic acid. In the granular foamable bath agent of the present invention, the content of organic acids other than tartaric acid and malic acid is less than 5% by mass. Or it does not contain organic acids other than tartaric acid and malic acid. As a result, sufficiently fine bubbles can be obtained.

  The content of tartaric acid or tartaric acid and malic acid in the bath preparation is 30 to 80% by mass, and further 40 to 70% by mass from the viewpoint of carbon dioxide generation, the point of obtaining fine bubbles and the sustainability of fine bubbles. %, Particularly 50 to 65% by mass is preferred.

  The average particle diameter of tartaric acid or tartaric acid and malic acid is preferably 100 to 1000 μm, more preferably 120 to 800 μm, and particularly preferably 150 to 700 μm from the viewpoints of finer foam, duration of foam, and sedimentation. In addition, an average particle diameter is the value measured by the same method as carbonate.

  Tartaric acid, or tartaric acid and malic acid may be blended as they are in the bath preparation, or may be coated with a surfactant such as a water-soluble polymer, oil component, nonionic surfactant, or granulated. May be used.

  Specific examples of the water-soluble polymer include polyethylene glycol, polyvinyl alcohol, polyvinyl pyrrolidone, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxymethyl cellulose, hydroxypropyl methyl cellulose, gum arabic, xanthan gum, guar gum, gelatin, carrageenan, sodium alginate, polyacrylic acid Sodium, dextrin, starch, agar, casein, albumin, collagen and the like can be mentioned. Among them, polyethylene glycol, polyvinyl alcohol, polyvinyl pyrrolidone, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, Hydroxymethylcellulose and hydroxypropylmethylcellulose are preferred Arbitrariness. These may be used alone or in combination of two or more. In addition, when these water-soluble polymers are contained in the bath agent of the present invention, the content thereof is the effect of preventing tartaric acid and malic acid from scattering, and preventing the bath water from becoming slippery, preventing the bath from slipping, preventing the bath water from thickening. In this respect, 0.001 to 10 mass%, particularly 0.1 to 5 mass% is preferable.

  Specific oily components include mineral oils such as liquid paraffin and white petrolatum; plant oils such as cinnamon oil, bergamo oil, cocoon oil, lavender oil, olive oil, soybean oil, pine oil, nuka oil, rice bran extract, jojoba oil, etc. Oils; fatty acid esters such as isopropyl myristate and other ester oils; linear, branched or cyclic silicones, dipropylene glycol, 2-ethoxyethanol, 3-methyl-3-methoxybutanol, triethyl citrate, etc. . Of these, dipropylene glycol, 2-ethoxyethanol, isopropyl myristate, 3-methyl-3-methoxybutanol, triethyl citrate, liquid paraffin, cinnamon oil, and ester oil are preferable. These may be used alone or in combination of two or more. In addition, when the oily component is contained in the bath agent of the present invention, its content is such as tartaric acid and malic acid scattering prevention effect, oil floating prevention when added to bath water, prevention of stickiness, prevention of particle sticking, etc. From 0.01 to 10% by mass, particularly 0.2 to 2% by mass is preferable.

  Surfactants include nonionic surfactants such as glycerin fatty acid esters, propylene glycol fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbit fatty acid esters, polyoxyethylene alkyl ethers, polyoxypropylenes. Examples include alkyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyglycerin fatty acid ester, and sucrose fatty acid ester. It is done. When the surfactant is contained in the bath agent of the present invention, the content thereof is 0.001 to 5% by mass, and further 0.1 to 5 from the viewpoint of preventing oil floating when added to the bath water and preventing stickiness. % By mass, especially 0.1 to 3% by mass is preferred.

  The granular bath agent of the present invention preferably has a 0.01 wt% aqueous solution having a pH of 5 to 7, particularly 5.5 to 6.5 at 25 ° C. This is because, if the pH is 5 to 7, the generated carbon dioxide gas easily dissolves in the bath water and exhibits effects such as blood circulation promotion.

  In this invention, the component normally used for the bath agent can be added in the range which does not inhibit the effect of this invention. Examples thereof include inorganic salts such as magnesium sulfate, vitamins such as vitamin A, proteolytic enzymes such as pepsin, coloring agents, and fragrances.

  The granular bath agent of the present invention can be produced by mixing the above components. The granular bath agent of the present invention is preferably used by dissolving in bath water and generating bubbles of carbon dioxide gas. The bath preparation of the present invention can be used as a partial bath such as foot bath and arm bath as well as full body bath such as bath.

The granular bath agent of the present invention generates a large amount of extremely fine bubbles when dissolved in bath water, and the bubbles persist. The generation of fine bubbles can be confirmed from the fact that the bath water becomes cloudy due to the generated bubbles when 40 to 60 g of bathing agent is dissolved in 150 liters of bath water.
Further, the particle size of the bubbles generated here is difficult to measure accurately because the bubbles move, but it was approximately 20 to 100 μm when analyzed by video shooting. The size of the bubbles is obtained by confining the solution containing the generated bubbles in a glass cell (1 mm x 5 mm x 10 mm) with no convection, and taking a picture with a slide glass with a scale, using a video microscope. It can be measured from the image.

  Each component was mixed by the mixing | blending shown in Table 1, and the powdery foamable bath agent was manufactured. About the obtained bath preparation, the foamed state (size, duration) and usability when dissolved in bath water were evaluated, and the results are shown in Table 1.

〔Evaluation method〕
(1) Duration of foaming and size of foam 6 L of 40 ° C. hot water is put into an acrylic cylinder having a diameter of 150 mm and a height of 500 mm, 10 g of bath agent is added, and a stirrer having a 65 mm diameter stirring blade attached to the shaft. The solution was dissolved uniformly while stirring at 20 rpm, and the appearance of the bath agent dissolving while foaming was visually observed from a position 30 cm away from the cylinder.
Furthermore, the time until a circular mark having a diameter of 16 mm marked at a position 300 mm from the bottom of the cylinder was seen was evaluated as the duration of foaming.
In addition, the size of the foam was determined by confining the solution 1 minute after adding the bath preparation in a glass cell (1 mm x 5 mm x 10 mm) with no convection, and a video microscope with a calibrated slide glass. Images were taken and evaluated according to the following criteria.
Large: Bubble size is 1 mm or more Medium: Bubble size is 100 μm or more, less than 1 mm Small: Bubble size is less than 100 μm (2) Feeling of use 1 after adding 40 g of bath agent to 150 liters of bath water The turbid state after the minute and the presence or absence of roughness on the bottom of the bathtub due to the remaining undissolved bathing agent when the foam disappeared and the state of cloudiness were confirmed.

As is clear from Table 1, all of the granular foaming bath agents of the present invention can maintain the generation time of fine bubbles so that the entire bathtub becomes cloudy, and the feeling of use is good without the roughness of the bottom of the bathtub. It was. Moreover, even after long-term storage, the packaging bag did not swell or the weight changed, and the storage stability was good.
In Comparative Example 1 in which the content of the dialkali metal carbonate was high, the dialkali metal carbonate remained undissolved and roughened at the bottom of the bath water, and the amount of foam was small and almost no cloudy. In Comparative Example 2 having a high tartaric acid content, tartaric acid remained undissolved and roughened at the bottom of the bathtub, and the amount of foam was small and almost no cloudy. Comparative Example 3 in which part of the dialkali metal carbonate was replaced with sodium bicarbonate and Comparative Example 4 in which the dialkali metal carbonate was entirely replaced with sodium bicarbonate were small in comparison with the foam of the tablet bath. The entire bath water was not so cloudy (about 200 μm to 2000 μm), and was almost cloudy because of the large bubbles. Also, the bubble duration was short. In Comparative Example 5 using an organic acid (fumaric acid) other than tartaric acid and malic acid, fumaric acid remains undissolved and roughening occurs at the bottom of the bathtub. The time was not enough. In Comparative Example 6 using a dialkali metal carbonate having an average particle size of less than 100 μm, foaming occurred on the surface of the bath water, resulting in a short cloudiness and a short foaming duration.

Claims (4)

A granular foaming bath agent containing a carbonate and an organic acid,
The following components (A) and (B):
(A) 30 to 60% by mass in a dialkali metal carbonate salt bath agent having an average particle size of 100 to 750 μm, and (B) tartaric acid having an average particle size of 150 to 700 μm , or tartaric acid having an average particle size of 150 to 700 μm and 40-70 mass% in malic acid bath preparation
Containing, particulate foaming bath agent carbonates dialkali metal salt content in the carbonate total amount Ru 75 to 100% by mass.   The granular foaming bath agent according to claim 1, wherein when 40 to 60 g of bathing agent is dissolved in 150 liters of bathing water, the entire bathing water becomes cloudy due to the generated foam.   The granular foaming bath agent according to claim 1 or 2, wherein the mass ratio of tartaric acid and malic acid (tartaric acid: malic acid) is 100: 0 to 1:99. The granular foaming bath agent according to any one of claims 1 to 3, obtained by mixing components (A) and (B).