JPS6393711A - Bathing agent - Google Patents

Abstract

PURPOSE:To provide a weakly acidic bathing agent containing CO2 or CO2- generating substance, an oily component, a dispersing agent or emulsifying agent for the oily component and fine powder, effective in retaining carbon dioxide gas in bath water to promote the blood flow, preventing the chill after bath and giving excellent feeling to the skin after bath. CONSTITUTION:The objective weakly acidic bathing agent contains (A) CO2 or CO2-generating substance, (B) an oily component, (C) a dispersing agent or emulsifying agent for the oily component and (D) fine powder. The CO2- generating substance is preferably a combination of a carbonate (e.g. NaHCO3, CaCO3, etc.) and an acid selected from the acid of formula (n is 2-4) and fumaric acid. The component B is insoluble or hardly soluble in water and an image of milk bath can be attained by uniformly dispersing or emulsifying the component B with the component C in bath water to effect the clouding of the water. The component D is fine powder having particle diameter of <=3mu (e.g. resin, talc, etc.) having precipitation ratio of <=50wt% after 24hr in water. It increases the refreshing feeling after bath. CO2 is supported on zeolite, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bath additive, and more particularly to a bath additive that does not leave the bath cold and leaves the skin feeling good after bathing.

[Conventional technology]

Bath additives are generally a mixture of inorganic salts such as mirabilite, borax, sulfur, and carbonates, combined with fragrances, coloring agents, plant extracts, organic acids, etc., and give scent and color to the bath water, and are suitable for the skin. It stimulates blood circulation, relieves 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 effervescent bath additives are neutral or slightly alkaline, and almost all of the carbon dioxide gas generated does not dissolve in the water and evaporates into the air. It simply performed a sensuous mechanical action.

The inventors of the present invention first created a bath additive that contains monocarbonate and an acid so that the pH of the bath water is slightly acidic, thereby retaining carbon dioxide gas in the bath liquid, promoting blood circulation, and cooling the bath water. We reported a weakly acidic bath additive that does not cause this.

[Problem that the invention seeks to solve]

However, there has been a desire for a bath additive that not only provides such bath effects but also provides a good skin feel after bathing.

[Means for solving problems]

As a result of extensive research to solve the above problems, the present inventors have discovered that an excellent bath additive can be obtained by adding an oily component together with carbon dioxide gas or a carbon dioxide gas generator to make it weakly acidic. They discovered this and completed the present invention.

That is, the present invention provides a weakly acidic bath additive characterized by containing carbon dioxide gas or a carbon dioxide gas generator and an oily component.

In the present invention, carbon dioxide gas is retained by a carbon dioxide retaining substance such as an aluminosilicate or cyclodextrin, or is used by being sealed under high pressure.

Aluminosilicates used as carbon dioxide retaining substances are
Any of amorphous, partially crystalline, and crystalline forms can be used, but crystalline forms are preferred. Specifically, natural aluminosilicates such as analcite and chabazite, zeolites) A and X.

Synthetic zeolite, which is commonly referred to as Y, etc., is used. Among these, synthetic zeolites represented by the following general formula are preferred as they contain less impurities and other contaminants.

(Mv!IO) x-A4o,・(sto,),・(H
2O)z (where M is a metal atom with a valence of n, X is 0,
7 to 1.5, y is 0.8 to 101Z is a number of 0 or more) Among the synthetic zeolites of the general formula, examples of the metal atom represented by M include sodium, potassium, calcium, magnesium, etc. It is preferable that the water content is 0, that is, it contains substantially no water. The size of these aluminosilicates is 0.5 to 100μ in particle size, preferably 1
~40μ. The usage form of the carbon dioxide retaining substance is as follows:
Examples include fine powder having the above-mentioned particle size, granules, pellets, etc., but fine powder is preferable from the viewpoint of effectiveness.

Examples of cyclodextrin as a carbon dioxide retaining substance include α-cyclodextrin, β-cyclodextrin,
Examples include γ-cyclodextrin and derivatives thereof.

Carbon dioxide gas can be adsorbed onto these retention substances by, for example, bringing the retention substances into contact with carbon dioxide gas. The retention material used here, such as an aluminosilicate, is preferably dehydrated by heat treatment and is optimally substantially water-free. The nuclear adsorption is preferably carried out under anhydrous conditions at 1 carbon dioxide pressure of 0.1
#/α2 or more, preferably 1 to 10 m/ffi”.The temperature is 30°C or less, preferably 20°C or less,
Although the time is not particularly limited, the reaction is preferably carried out until equilibrium is reached.

The amount of carbon dioxide gas adsorbed onto the holding substance is 2rco.

/ 100 retention substance or more, special K 5 f Cot
/100 or more is preferable.

The carbon dioxide gas generating substance may be anything that generates carbon dioxide gas by reaction, and a combination of carbonate and acid is particularly preferred.

Examples of the carbonate include sodium hydrogen carbonate, sodium sesquicarbonate, sodium carbonate, potassium hydrogen carbonate, ammonium hydrogen carbonate, magnesium carbonate, calcium carbonate, and the like, and 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 dicarboxylic acids such as succinic acid, glutaric acid, azopic acid, pimelic acid, and fumaric acid; acidic amino acids such as diglutamic acid and ascorbic acid; oxyacids such as malic acid, citric acid, and ascorbic acid; benzoic acid; Examples include pyrrolidone carboxylic acid and acid salts of these organic acids. Examples of inorganic acids include potassium dihydrogen phosphate and sodium sulfite. Especially the expression:)! 0OC-(C
H,)11-COOH (in the formula, n is an integer of 2 to 4) and one or more acids selected from fumaric acid are preferred.

The blending amount of carbonate and acid in the weakly acidic bath additive of the present invention is such that when the bath additive is added to the bath water, the bath water exhibits weak acidity.
7. If you are busy, it is necessary to adjust the pH to preferably 6.0 to 6.7. If the pH is lower than 4, there is a risk of strong irritation to the skin and damage to the bathtub, and if the pH is higher than 7, the effects of the present invention will not be achieved. The effect of carbon dioxide gas in the present invention is that when the pH is acidic, carbon dioxide gas
It exists as O2 molecules and shows a blood flow promoting effect, but at alkaline pH, carbon dioxide gas becomes CO; - ion or H
This is because it is based on the principle that since it exists as CO, - ions, the effect is hardly observed at all.

The blending amounts of carbonate and acid to satisfy these conditions vary depending on their type, but based on the total composition, carbonate should be 5 to 80% by weight, especially 10 to 50%, acid should be 10 to 80%,
Particularly preferred is 15 to 50%.

The oil component used in the bath additive of the present invention is insoluble or sparingly soluble in water, is liquid or solid at room temperature, and when liquid, has viscosity and combustibility, for example. The following can be mentioned.

Oils and fats: Natural oils and fats such as soybean oil, bran oil, jojoba oil, agogado oil, almond oil, olive oil, cacao butter, sesame oil, 9-sic oil, castor oil, coconut oil, mink oil, beef tallow, pork fat, etc. Hydrogenated oils obtained by hydrogenating natural fats and oils and synthetic triglycerides such as myristic acid glyceride and 2-ethylhexanoic acid glyceride, etc.0 waxes: carnauba wax, wax, beeswax, lanolin, etc.

Hydrocarbons: Fluid Q Rough In, Vaseline, 79 Rough In, Microcrystalline Wax, Ceresin, Squalane, Pristane, etc.

Higher fatty acids: lauric acid, myristic acid, no-Q-lumitonic acid, stearic acid, behenic acid, oleic acid, linoleic acid, lilunic acid, lanolic acid, instearic acid, etc.

Higher alcohols: nilauryl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, lanolin alcohol,
Cholesterol, 2-hexyldecanol, etc.

Esters: myristyl lactate, cetyl lactate, isozorobyl myristate, myristyl myristate, inopropyl 9-rumitate, isozorobyl azopic acid, butyl stearate,
Decyl oleate etc.

silicone oils.

These oily components may be used alone or in combination of two or more, and when the bath additive of the present invention is added to bath water, the oily components will be 10 to 10%.
It is preferable that the amount is 500 pprn, particularly 20 to 1 oo ppm, relative to the amount used per time.

In addition to the above-mentioned essential components, the bath additive of the present invention preferably contains a dispersant or emulsifier for oily components so that the oily components are uniformly dispersed or emulsified when added to bath water. This not only prevents the oily components from floating on the surface of the water when the bath additive is poured into the bath water, but also makes the bath water cloudy and reduces the transparency of a 0.01% aqueous solution to 4.
By setting it to 0C111 or less, preferably 20C11 or less, it is possible to create a high-class image like a milk bath.

Transparency in the present invention is expressed as the depth at which a white disk with a diameter of 31 mm becomes invisible when submerged in water.

Dispersants or emulsifiers used for this purpose include water-soluble polymers, surfactants, etc. Examples of water-soluble polymers include sodium alginate, propylene glycol alginate, gum arabic, xanthan gum, pectin, tragacanth, A? Sodium oxymethylcellulose, methylcellulose, carme Φsibinylurimer, ? Lieterene glycol,? libinyl alcohol, y
y'+) Hinylpyrrolidone, milk tannin, soybean tannin, gelatin, egg tannin, sodium caseinate, whey tannin, etc. are used, but gums such as gum arabic and xanthan gum, and casein Water-soluble salts such as sodium and whey salts are preferred. As the surfactant, anionic, cationic, nonionic, natural or synthetic surfactants can be used.

These dispersants or emulsifiers for oily components are preferably blended in an amount of 5 to 100% by weight based on the oily components in the bath additive.

Further, it is preferable that the bath additive of the present invention contains a fine powder having a particle size of 3 microns or less, which is substantially insoluble in water and has a sedimentation ratio of 50% by weight or less after 24 hours in water. By dispersing this fine powder well in the bath water, it is possible to suppress stickiness caused by oily components after bathing and increase the feeling of freshness.

It is preferable to select the fine powder that meets these conditions from among those generally referred to as powders for cosmetics, such as acrylic resin, styrene resin, and powder for cosmetics. xy resin, nylon,
? Rietelen,? Sfe! Hiren, &+7m vinyl,
? Liethylene tele 7 talate resin,? Litetrafluoroethane, a co-molecule of these polymers? limmer, silicic acid, calcium silicate, natural aluminum silicate, synthetic aluminum silicate, zeolite, titanium oxide, talc, kaolin,
Examples include fine powders such as mica and bentonite.

The true specific gravity of the fine powder is preferably close to 1, and it is better to bring the true specific gravity close to 1 by combining, melting, or surface treating powders with light and heavy true specific gravity. The fine powder is preferably blended in an amount of 10 to 500% by weight based on the oily component in the bath additive. In addition, the sedimentation ratio in the present invention refers to the dry weight of 0.5 grams of a sample dispersed in a 11&L6 colorimetric tube filled with water to a height of 30 cm, completely settled after 24 hours of tb This is the calculated value.

Furthermore, the bath additives of the present invention may contain crude drugs, pigments, vitamins, fragrances, enzymes, and other ingredients necessary for formulation, which are usually included in bath additives.

The bath additive of the present invention is produced by adding the above-mentioned optional components to the above-mentioned essential components as needed, and adjusting the bath water so that the bath water exhibits weak acidity when administered. The dosage form can be granules, tablets, emulsion, etc.

[Action and effect of invention]

The bath additive of the present invention not only promotes blood circulation to the skin through the action of carbon dioxide gas present in the bath water and exhibits a soaking bath effect, but also has an oily component dispersed in the bath water. By adhering to the skin, it replenishes the oil content of the skin and makes the skin supple after bathing, giving a good feeling after bathing.

〔Example〕

Next, the present invention will be described with reference to Examples and Test Examples. Example I 10 parts by weight of DIA (diisozologyl azopate), 10 parts by weight of Fluid 79 Roughin, nonionic surfactant (product name: Emuldan 320° Kao ■ After thoroughly mixing 5 parts by weight of calcium silicate, 10 parts by weight of calcium silicate, and 15 parts by weight of dextrif and powdering in a conventional manner, 10 parts by weight of this powder, 30 parts by weight of sodium bicarbonate, and 15 parts by weight of sodium carbonate were prepared.
Parts by weight, 35 parts by weight of succinic acid, ? 2 parts by weight of diethylene glycol 6000, 5 parts by weight of sodium sulfate, pigment,
After adding a small amount of flavoring agent and mixing uniformly, the mixture was compressed to obtain tablets each weighing 5°. The tablets were packaged in an aluminum bag and used as a bath additive.

Comparative Example 1 30 parts by weight of sodium hydrogen carbonate, 15 parts by weight of sodium carbonate, 35 parts by weight of co-phosphoric acid, ? Diethylene glycol 6000 2x tS, 5 parts by weight of sodium sulfate, 10 parts by weight of dextrin, a dye, and trace amounts of fragrance were added, mixed uniformly, and then tableted to obtain one 50F tablet. The tablets were packaged in an aluminum bag and used as a bath additive.

Example 2 200 parts by weight of water was added to 5 parts by weight of DIA (diisozologyl azopate), 29274715 parts by weight of fluid, 2 parts by weight of whetane, 2 parts by weight of Q phosphate, and 40 parts by weight of dextrin, and the mixture was emulsified by a conventional method. was spray-dried to obtain a powder. Acrylic resin 1) 1 in this powder
0 parts by weight, 10 parts by weight of sodium hydrogen carbonate, 5 parts by weight of sodium carbonate, 15 parts by weight of cono-phosphoric acid, ? 60,000.5 parts by weight of diethylene glycol, a coloring matter, and trace amounts of fragrance were added, mixed uniformly, and then tableted to obtain tablets weighing 50 grams each.The tablets were packaged in an aluminum bag and used as bath additives.

1) Acrylic resin = Sedimentation amount after 24 hours 12%, average particle size 0.4 microns, maximum particle size 1 micron or less Comparative Example 2 DIA 5 parts by weight, fluidity 79274715 parts by weight, whey ester 2 parts by weight, dextrin After adding 200 parts by weight of water to 40 parts by weight and emulsifying it by a conventional method, this was spray-dried to obtain a powder.

To this powder were added 20 parts by weight of sodium sulfate, 20 parts by weight of sodium hydrogen carbonate, a coloring matter, and a trace amount of fragrance, and after uniformly mixing, one package of SOt powder bath salt was prepared.

Test Examples Each of the bath additives in Example 1.2 and Comparative Example 1.2 was used by 20 NoQners in the usual manner for 10 days, and the overall evaluation as a bath additive (overall feeling of use) and after bathing were evaluated. We investigated the moistness and lightness of the skin and the condition of the hot water.

The results are shown in Table 1.

It can be seen that the bath additive of the present invention is an excellent bath additive that makes the skin firm and supple after bathing, giving a refreshing feel, and is preferred by those who prefer hot water.

Table 1 Example 3 After adding 200 parts by weight of water to 3 parts by weight of semenol, 79274717 parts by weight of fluid, 5 parts by weight of glyceride monostearate, 2 parts by weight of sodium caseinate, and 40 parts by weight of dextrin, emulsification was carried out by a conventional method. This powder was spray-dried to obtain a powder.To this powder, 10 parts by weight of acrylic resin (same as in Example 2), 10 parts by weight of sodium bicarbonate, 5 parts by weight of sodium carbonate, 15 parts by weight of succinic acid, ?
Add 1 part by weight of diethylene glycol 6000, a coloring matter, and a trace amount of fragrance, mix uniformly, and then punch to obtain a tablet of 80 f.The tablets are packaged in an aluminum bag and used as a bath additive.Example 4 Example 3 After uniformly mixing with the formulation, it was made into granules using a dry granulator and made into granular bath salts of 80F per bag.0 or more

Claims (1)

[Scope of Claims] 1. A weakly acidic bath additive characterized by containing carbon dioxide gas or a carbon dioxide gas generator and an oily component. 2. The weakly acidic bath additive according to claim 1, further comprising a dispersant or emulsifier for oily components. 3. The method according to claim 1 or 2, further comprising a fine powder having a particle size of 3 microns or less, which is substantially insoluble in water and has a sedimentation ratio of 50% by weight or less after 24 hours in water. Weakly acidic bath salts. 4. The weakly acidic bath additive according to any one of claims 1 to 3, wherein the carbon dioxide gas generating product is composed of a carbonate and an acid. 5. A patent in which the acid is one or more acids selected from the group of acids and fumaric acids represented by the formula BOOC-(CH_2)_n-COOH (wherein n represents an integer of 2 to 4) A weakly acidic bath additive according to claim 4. 6. The weakly acidic bath additive according to any one of claims 1 to 3, wherein carbon dioxide gas is retained by zeolite or cyclodextrin.