JPS5970609A - Weakly acidic bathing agent - Google Patents

Abstract

PURPOSE:A weakly acidic bathing agent having good influence on human skin, promoting circulation of blood, without damaging a bath furnace, bathtub, etc., containing a carbonate and a specific acid such as succinic acid, fumaric acid, etc. CONSTITUTION:A bathing agent containing a carbonate (e.g., sodium hydrogencarbonate, sodium carbonate) and an acid selected from succinic acid, fumaric acid, phosphoric acid, succinic acid-sodium, fumaric acid-sodium, and sodium hydrogenphosphate in an amount to make 0.01 aqueous solution of the bathing agent into 5-7pH. The blending amount of the acid is 20-150wt% succinic acid, fumaric acid, or phosphoric acid based on the carbonate calculated as sodium hydrogen carbonate, 40-300wt% succinic acid-sodium or sodium hydrogenphosphate, or 30-250wt% fumaric acid-sodium.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel weakly acidic bath additive, and more particularly to a weakly acidic bath additive containing a carbonate and a specific acid that causes little damage to bathtubs and bathtubs.

Bath additives are generally a mixture of inorganic salts such as mirabilite, borax, sulfur, salt, carbonate, etc., combined with additives, colorants, plant extracts, organic acids, etc., and add fragrance and color to the bath water. By stimulating the skin surface at 314 degrees, it activates blood circulation and relieves fatigue; l! 'J Fuku, new generation. (increase, i↓; six).Among these Jj bath salts,
There are effervescent bath additives that combine carbonate and acid, and these have the effect of creating carbon dioxide gas bubbles in bath water, increasing the feeling of relaxation and refreshment, and making bathing more enjoyable.

However, the bath salts commonly used in households are neutral to weakly alkaline, with inorganic salts as main ingredients such as octopus, sodium bicarbonate, and carbonate.
Acidic or weakly acidic bath additives are known to damage bathtubs or bathtubs, and have not yet been put into practical use.

However, since the pH of human skin is weakly acidic, the inventor of the present invention has conducted extensive research and found that weakly acidic bath additives have a favorable effect on the skin, and have found that the pH of human skin is weakly acidic. il citric acid, fumaric acid instead of tartaric acid,
It was discovered that when succinic acid, phosphoric acid, or their salts are used to make weakly acidic bath additives, there is almost no corrosion of bath pots and bathtubs, which had been a concern in the past. The invention relates to bath additives containing carbonates and alcoholic acid, in which phosphoric acid, fumaric acid, phosphoric acid, and succinic acid are used as acids.
Contains one type of acid selected from the group consisting of sodium, sodium fumarate, and sodium hydrogen phosphate, or 21R or more, and has a PL of 5 to 7 (0 , 01, *Fls aqueous solution) The carbonate to be added to the acid in the bath additive of the present invention may include, for example, sodium hydrogen carbonate, sodium carbonate, and sodium sesquicarbonate. These can be used alone or in combination of two or more types.

The combination of acid and carbonate is such that when the bath salt is added to the bath water, the bath water becomes weakly acidic at a ratio of 1, that is, t) of the bath salt.
It is necessary to adjust the pH of the 01 wt ml % aqueous solution to 5-7. If the pH is higher than 5, it is not a good idea as it is highly irritating to the skin and may damage the bathtub.The combination of acids to meet these conditions varies depending on the type of acid. In the case of phosphoric acid, fumaric acid, and phosphoric acid, add 7.11° to carbonate (replace 9 to sodium bicarbonate. 1゛] Same below) and apply 20 to 1501 technique I11', Kono・In the case of sodium phosphate, dihydrogen phosphate, carbonic acid K 7+ 1., 40-300 Jj
In the case of ilf, fumaric acid-sulfur, it is necessary to be 30 to 250 + 4 (thi) to carbonate.

In addition to the above-mentioned essential components, the bath additive of the present invention may contain sulfates such as ditrium sulfate, magnesium sulfate, and zinc sulfate, or hydrochlorides such as trichloride. The ratio of this combination to the acid is preferably 30 to 500, particularly 50 to 300.

Furthermore, the bath additives of the present invention include fragrances, color names, vitamins, active ingredients of sake fountain, protein 7illF, enzymes, seaweed extract, sodium alginate, lanolin, silicone, and amphoteric surfactants. , herbal medicines or their extracts can be added to further enhance the effect.

The bath additives of the present invention can be in the form of powder, granules, crystals, tablets, or tubes, and in order to formulate them, excipients, binding agents, disintegrants, and liquids may be added as necessary. Although the bath additives of the present invention, such as Slanted Top, are weakly acidic, they do not damage bathtubs and bathtubs, and their pH is approximately the same as that of human skin, so they are gentle on the skin. give a positive impression.

Furthermore, the carbon dioxide gas generated when bathing in bath water exists as ions in alkaline conditions and has no effect on promoting blood flow, but in acidic conditions as in the present invention, it exists as 002 molecules and has an excellent effect of promoting blood circulation in the skin. play.

Next, an example will be given and explained.

Example 1 A bath additive having the composition shown in Table 1 was manufactured by fi'J, and its influence on a copper bath pot and an enamel bathtub was studied.

The results are shown in Table-2.

(1) Shadow β11 on copper bath pot ■ Elution of Cu from copper powder

Claims (1)

[Scope of Claims] ■ A bath additive containing a carbonate and an acid, the acid being an acid selected from the group consisting of succinic acid, fumaric acid, phosphoric acid, sodium succinate, sodium fumarate, and sodium hydrogen phosphate. containing one or more of the following, and the pH of 1 ton of the bath additive dissolved in bath water is 5 to 7 (0.
, 01 heavy JitS aqueous solution). 2. The weakly acidic bath additive according to claim 1, wherein the amount of succinic acid is 20 to 150 times carbonate (in terms of sodium bicarbonate). 3. The weakly acidic bath additive according to claim 1, wherein the amount of fumaric acid blended is 20 to 150 times C) in terms of carbonate (hydrogen carbonate) IJum. 4. The weakly acidic bath additive according to claim 1, wherein the amount of phosphoric acid blended is 20 to 150 g of carbonate (hydrogen carbonate) in terms of IJum. 5. The weakly acidic bath additive according to claim 1, wherein the amount of thorium succinate is 40 to 300% carbonate (in terms of sodium bicarbonate). 6. A weakly acidic bath additive according to claim 1, containing 30 to 250 layers of carbonate (in terms of hydrogen carbonate) and IJum (fumaric acid). . 7. The weak acid bath additive according to claim 1, wherein the amount of sodium hydrogen phosphate is 40 to 300% by weight of the carbonate (in terms of sodium hydrogen carbonate).