JPS60215621A - Weak-acidity bath preparation - Google Patents

Abstract

PURPOSE:The titled bath preparation having synergistically raised promoting effect on circulation of the blood and skin touch such as smooth feeling, etc., obtained by adding an enzyme to a bath preparation comprising a carbonate and an acid, making hot water in a bath show weakly acidic pH when it is used. CONSTITUTION:5-80wt% carbonate (e.g., NaHCO3, Na2CO3, KHCO3, K2CO3, etc.) is blended with an acid (e.g., organic acid such as formic acid, acetic acid, etc., or aliphatic dicarboxylic acid such as succinic acid, etc.) in a ratio (0.01wt% aqueous solution of the bath preparation shows 4-7pH, especially preferably 6.0-6.7pH) to make hot water in a bath show weakly acidic pH, and mixed with 0.001-10wt% enzyme (e.g., protease derived from pepsin, tryptophan, mold, yeast, etc.), to give a weakly acidic bath preparation. The bath preparation may be blended with a perfume, a vitamin, a crude drug, or its extracted essence, etc., to raise further the effects. In the preparation, CO2 exists as molecules in an acidic range and has promoting effect on blood circulation of the skin.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a novel weak acid-infused bath agent, more specifically, by incorporating an enzyme into a bath agent that contains carbonate and acid and makes the bath water PU weakly acidic when used. , mildly acidic bath additives that synergistically enhance the blood circulation promoting effect and skin texture such as smoothness of the skin.Bath additives generally contain mirabilite, borax, sulfur, salt,
It is a mixture of inorganic salts such as carbonates, combined with fragrances, colorants, plant extracts, organic acids, etc., which gives scent and color to the bath water, and stimulates blood circulation by providing moderate stimulation to the skin surface. It helps to recover from fatigue and improves metabolism. Among these bath additives, there are effervescent bath additives that combine carbonate and acid, which generate carbon dioxide gas bubbles in the bath water, increasing the feeling of relaxation and refreshment, and making bathing more enjoyable. has.

However, conventional foaming bath additives are neutral or slightly alkaline, and almost all of the carbon dioxide gas generated does not dissolve in the water and is dispersed into the air, so the carbon dioxide bubbles are simply It only produced a sensuous mechanical effect.

Therefore, the inventors of the present invention conducted various research and created a bath additive that contains carbonate and acid and makes the pH of the bath water slightly acidic, thereby retaining carbon dioxide gas in the bath liquid and promoting blood circulation. We have developed a weakly acidic bath additive that does not cause the bath to feel cold. Furthermore, the present inventor has now completed the present invention by discovering that when an enzyme is added to the composition, the blood circulation promoting effect and the skin feel, especially the smooth feeling of the skin, can be synergistically enhanced.

That is, the present invention provides a weakly acidic bath additive containing an enzyme, which is a weakly acidic bath additive containing a carbonate and an acid.

Examples of carbonates that can be incorporated into the weakly acidic bath additives of the present invention include sodium hydrogen carbonate, sodium carbonate JA, sodium sesquicarbonate, aqueous potassium carbonate, F[potassium, potassium sesquicarbonate, ammonium hydrogen carbonate salt, ammonium carbonate salt, sesquicarbonate] Examples include ammonium carbonate salts,
These can be used alone or in combination of two or more.

Further, as the acid, both organic acids and inorganic acids can be used, but water-soluble and solid acids are preferred.

Examples of organic acids include straight chain fatty acids such as chlorotic acid, acetic acid, propionic acid, butyric acid, and valeric acid; oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, fumaric acid, maleic acid, and phthalic acid. , dicarboxylic acids such as isophthalic acid and terephthalic acid; acidic amino acids such as glutamic acid and aspartic acid; gelcholic acid, lactic acid, hydroxyacrylic acid, α-oxybutyric acid, glyceric acid, tartronic acid,
Malic acid, tartaric acid, citric acid, salicylic acid (o, m
.

p), oxyacids such as gallic acid, mandelic acid, tronocic acid, ascorbic acid, gluconic acid; cinnamic acid, benzoic acid, phenylacetic acid, nicotinic acid, kainic acid, sorbic acid, pyrrolidonecarboxylic acid, trimellitic acid, benzene Examples include sulfonic acid, toluenesulfonic acid, and acid salts of these organic acids. Examples of inorganic acids include phosphoric acid, potassium dihydrogen phosphate, sodium dihydrogen phosphate, 41jf
! sodium chloride, potassium sulfite, sodium pyrosulfate (sodium metabisulfite), potassium pyrosulfite (
Potassium metabisulfate), acidic sodium hexametaphosphate, acidic potassium hexametaphosphate, acidic sodium birophosphate, acidic potassium birophosphate, sulfamino acid, etc. Among these, aliphatic dicarboxylic acids such as cono-phosphoric acid, fumaric acid, phosphoric acid, and acid salts thereof are preferred.

Enzymes used in the present invention include proteases and lipases. As the protease, a protease exhibiting activity at a temperature of 30 to 50°C and a pH of 4 to 7 is preferable, and proteases derived from animals and plants can be used, such as pepsin, trypurine, chymotrypsin, cathepsin, papain, promelain, Examples include ficin, and proteases derived from molds, yeasts, and bacteria.

The blending amount of carbonate and acid in the weak acid injected bath additive of the present invention is such that when the solvent is added to the bath water, the bath water exhibits weak acidity, that is, the pH of the 0.01% by weight aqueous solution of the bath additive is 4 to 4. 7, particularly preferably pH 6.0 to 6.7. If the pH is lower than 4, the irritation to the skin is strong and there is a tendency to damage the bathtub, etc. If the pH is higher than 7, the effects of the present invention will not be achieved.

The effect of the present invention is that when the pH is acidic, carbon dioxide gas CO2
It exists as a molecule and shows a blood flow promoting effect, but at alkaline pH, carbon dioxide gas becomes 003'-ion or 1(
This is based on the principle that the effect is not observed at all because Co3- ions exist.

The amount of carbonate and acid to be blended to satisfy such conditions varies depending on the type of carbonate, but the carbonate should be 5 to 80% by weight (hereinafter simply indicated as "H"), particularly 10 to 50% by weight, based on the total composition.
The preferred acid is 10-80%, particularly 15-50%.

Enzymes can be blended in a wide range of amounts, but it is generally recommended to blend an enzyme with an activity of 1,000 to 100,000 units/2 to the total composition by 0.001 to 10, especially 0.01 to 2. preferable.

Furthermore, the bath additives of the present invention contain commonly-used fragrances, pigments, vitamins, active ingredients from hot springs, seaweed extracts, sodium alginate, lanolin, silicone, herbal medicines or their extracts, etc., to improve their effectiveness. can be further enhanced.

The weakly acidic bath additives of the present invention include powders, granules, crystals, tablets, etc.
Particularly preferably, they can be in the form of tablets, and for their formulation, excipients, binders, disintegrants,
A lubricant or the like may also be added.

As mentioned above, the slightly acidic bath additive of the present invention has a pH that is approximately the same as that of human skin, and therefore has a favorable effect on the skin.

Moreover, the carbon dioxide gas generated when pouring into bath water exists as ions in alkaline conditions and has no effect of promoting blood flow, but in acidic conditions as in the present invention, it exists as CO2 molecules and has the advantage of promoting blood circulation in the skin. It has a great effect.

Next, an example will be given to explain how to remove light.Example 1 Bath additives having the compositions shown in Table 1 were prepared, and each bath additive was mixed with 0. O
Pour it into bath water so that it has a volume of 1 water, and add 30
The bath salts were used in the usual way for one month by a group of people, and the overall evaluation (overall feeling of use) as a bath salt, whether the water cooled or not, and the smooth feeling on the skin were evaluated.

1. -1 Millimeter Table 1 * Daiwa Kasei X (6), Protin FN The results are shown in the second table.
Table 2 and above should be as shown in the table.

Claims (1)

[Claims] 1. A weakly acidic bathing agent containing carbonate and acid, which is characterized by containing an enzyme.