JP5918992B2 - Bath agent composition - Google Patents

Description

  The present invention relates to a bath agent composition.

  Conventionally, it is known that the bath agent which mix | blended the carbon dioxide generator is excellent in the blood circulation promotion effect (for example, refer patent document 1). In such bathing agents, various studies have been made so far in order to impart a sufficient warming effect.

  For example, Patent Document 2 proposes a bath agent composition in which a carbon dioxide generator and an oil component are combined and carbon dioxide is dissolved in the oil component. Patent Document 3 discloses carbon dioxide, a fatty acid, and a fatty acid. Bath salt compositions combining glycerides and nonionic active agents have been proposed.

JP 59-70609 A JP 2005-97238 A JP 2010-215551 A

  However, with these bath additives, depending on the amount of oily components and surfactants to be blended, seepage may occur during the molding of the bath agent, and the appearance may be impaired, or floating substances on the bath surface may increase. In addition, there is a risk that oil floating may occur, and coexistence with a sufficient warming feeling is not always easy.

  Accordingly, an object of the present invention is to provide a bath preparation composition that provides a high warm feeling from the inside of the bath to after the bath, has good storage stability, and can also suppress floating substances on the bath water surface. It is in.

  Therefore, the present inventors have made various studies, and by using a specific surfactant in combination with a specific amount ratio to the carbon dioxide gas generator, sufficient warmth and suppression of suspended matters on the surface of the bath water can be achieved. The inventors have found that both can be achieved, and have completed the present invention.

That is, the present invention includes the following components (A), (B) and (C):
(A) Carbon dioxide generator,
(B) 1 to 15% by mass of one or more nonionic surfactants selected from polyethylene glycol fatty acid ester and polyoxyethylene hydrogenated castor oil, and (C) sorbitan fatty acid ester, propylene glycol fatty acid ester and glycerin fatty acid A bath agent composition containing one or more nonionic surfactants selected from esters and having a mass ratio of component (C) to component (B) ((B) / (C)) of 4 to 45 It provides things.

  The bath agent composition of the present invention is excellent in storage stability, and can exhibit a good appearance by suppressing bleeding and the like during molding. In addition, if bathing is performed using this, it is possible to obtain a sufficiently high feeling of warming and to effectively suppress the occurrence of suspended matters on the surface of the bath water.

Hereinafter, the present invention will be described in detail.
The bath agent composition of the present invention contains a carbon dioxide gas generator (A). The carbon dioxide gas generation product of component (A) is not particularly limited as long as it generates carbon dioxide gas when the bath agent composition of the present invention is added to the bath water, but is preferably a combination of acid and carbonate. . As the acid, either an organic acid or an inorganic acid can be used. Among them, a water-soluble and solid acid is preferable, and an organic acid is more preferable. Examples of the organic acid include succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid, salicylic acid, maleic acid, phthalic acid, glutaric acid, oxalic acid, and the like. Can be used singly or in combination of two or more. Among these, succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid, and salicylic acid are preferable, and fumaric acid is more preferable from the viewpoint of storage stability.

  Examples of the inorganic acid include boric acid, metasilicic acid, inorganic silicic acid and the like, and these can be used alone or in combination of two or more.

  Examples of the carbonate include sodium carbonate, sodium hydrogen carbonate, magnesium carbonate, calcium carbonate, potassium carbonate and the like. From the viewpoint of storage stability, sodium carbonate and sodium hydrogen carbonate are preferable, and sodium carbonate is more preferable. These carbonates can be used alone or in combination of two or more.

The content of the carbon dioxide generation product of component (A) is 40 to 95% by mass in the bath agent composition of the present invention from the viewpoint of securing an appropriate amount of carbon dioxide generation and storage stability. Preferably, it is 50-90 mass%.
The preferred content ratio of acid to carbonate is 20:80 to 90:10, more preferably 40:60 to 80:20, and even more preferably 50:50 to 70:30.

  The bath agent composition of the present invention contains one or more nonionic surfactants (B) selected from polyethylene glycol fatty acid esters and polyoxyethylene hydrogenated castor oil. The present inventors have discovered for the first time that the nonionic surfactant of component (B) exhibits the effect of promoting the penetration of carbon dioxide into the skin in the bath preparation composition of the present invention and brings about a sufficiently warm feeling. did. Further, as described later, in combination with the nonionic surfactant of component (C), the mass ratio ((B) / (C)) of component (C) to component (B) is 4 to 45, so that By significantly increasing the penetration of gas into the skin, it is possible to effectively suppress the occurrence of suspended matter or the like on the surface of the bath water while exhibiting a sufficient warming sensation.

  The fatty acid residue of the polyethylene glycol fatty acid ester is preferably one having 4 to 24 carbon atoms, more preferably one having 12 to 18 carbon atoms, and even more one having 18 carbon atoms such as stearic acid and oleic acid. Preferably stearic acid is even more preferred. Examples of the polyethylene glycol fatty acid include polyethylene glycol monostearate, polyethylene glycol distearate, and the like, and those having an average added mole number of ethylene oxide of 2 to 400, preferably 100 to 300 are mentioned. Specific examples include polyethylene glycol monostearate (140 EO), polyethylene glycol monostearate (250 EO), and polyethylene glycol distearate (140 EO). The numbers in parentheses represent the number of moles of ethylene oxide added (hereinafter the same).

  Examples of the polyoxyethylene hydrogenated castor oil include those having an average added mole number of ethylene oxide of 5 to 100, preferably 20 to 80. Specific examples include polyoxyethylene hydrogenated castor oil (40E.O) and polyoxyethylene hydrogenated castor oil (60E.O).

  The nonionic surfactant of component (B) is solid at room temperature (25 ° C.) from the viewpoint of uniformly dispersing in the bath agent composition of the present invention and enhancing the synergistic effect with component (C) described later. Or it is preferable that it is a semi-solid. The term “solid or semi-solid” means to include a paste-like material and does not show fluidity and means a state in which the viscosity cannot be measured.

  The total content of the nonionic surfactant of the component (B) is 1 to 15% by mass from the viewpoint of improving the effect of promoting the penetration of carbon dioxide gas into the skin and suppressing the reduction of skin feel. It is preferable that it is 2-10 mass%, and it is more preferable that it is 3-8 mass%.

  The bath agent composition of the present invention contains one or more nonionic surfactants (C) selected from sorbitan fatty acid esters, propylene glycol fatty acid esters and glycerin fatty acid esters. Component (C), a nonionic surfactant, does not inhibit the effect of promoting penetration of carbon dioxide gas into the skin by component (B) in the bath preparation composition of the present invention. Can be effectively suppressed, and bleeding or the like during molding can be prevented.

  The fatty acid residue of the sorbitan fatty acid ester is preferably one having 4 to 24 carbon atoms, more preferably one having 12 to 18 carbon atoms. Specifically, for example, stearic acid and oleic acid are preferred, and stearic acid is preferred. Is more preferable. The sorbitan fatty acid ester may be any of mono fatty acid sorbitan, di fatty acid sorbitan, tri fatty acid sorbitan, and sesqui fatty acid sorbitan, but mono fatty acid sorbitan is preferred. Specific examples include sorbitan monostearate, sorbitan monooleate, sorbitan distearate, sorbitan tristearate, sorbitan trioleate, sorbitan sesquistearate, and sorbitan sesquioleate. Of these, sorbitan monostearate is preferable.

  The fatty acid residue of the propylene glycol fatty acid ester is preferably one having 4 to 24 carbon atoms, more preferably one having 12 to 18 carbon atoms, specifically, for example, stearic acid or oleic acid, Acid is more preferred. The propylene glycol fatty acid ester may be any of mono-fatty acid propylene glycol, di-fatty acid propylene glycol, and tri-fatty acid propylene glycol. Mono-fatty acid propylene glycol is preferred, and specific examples thereof include propylene glycol monostearate. Is mentioned.

  The fatty acid residue of the glycerin fatty acid ester is preferably one having 4 to 24 carbon atoms, more preferably one having 8 to 18 carbon atoms. Specifically, for example, stearic acid and oleic acid are preferred, and stearic acid is preferred. Is more preferable. Such glycerin fatty acid ester may be any of monoglycerin fatty acid ester, diglycerin fatty acid ester, and triglycerin fatty acid ester, but monoglycerin fatty acid ester is preferable, and specific examples thereof include glyceryl monostearate. It is done.

  The total content of the nonionic surfactant of the component (C) is 0.02 to 15% by mass from the viewpoint of suppressing suspended matters and the like on the surface of the bath water, and from the viewpoint of suppressing a decrease in skin feel. Preferably, it is 0.1-1.0 mass%.

  In the bath agent composition of the present invention, the mass ratio of the component (C) to the component (B) ((B) / (C)) is intended to improve the effect of suppressing suspended matters on the surface of the bath water, and From a viewpoint of suppressing the fall of a touch, it is 4-45, 5-20 are preferable and 5-15 are more preferable.

  The bath agent composition of the present invention may further contain a nonionic surfactant other than the component (B) and the component (C) as long as the effect of the present invention is not affected. In the bath agent composition of the present invention, the content of the nonionic surfactant other than the component (B) and the component (C) is preferably 5% by mass or less, and more preferably 1% by mass or less. Preferably, the content is 0.8% by mass or less, more preferably 0.4% by mass or less, and further preferably not substantially contained.

  The bath agent composition of the present invention may further contain an oily component as a component other than the above components, but may not contain it. The bath agent composition of the present invention can provide a good skin feel while achieving both a sufficient warming feeling and suppression of suspended matters on the surface of the bath water without containing an oil component. Examples of the oil component include fatty acid esters such as cetyl octanoate, isostearyl isostearate, cetyl isooctanoate, myristyl lactate, cetyl lactate, isopropyl myristate, isopropyl palmitate, and isopropyl adipate; Hardened oil obtained by hydrogenation and glycerides such as myristic acid glyceride and 2-ethylhexanoic acid glyceride; hydrocarbon oils such as liquid paraffin, petrolatum, paraffin and microcrystalline wax; lauric acid, myristic acid, palmitic acid, stearin Higher fatty acids such as acids; higher alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol; essential oils and silicone oils. The content of the oily component is preferably 10% by mass or less, more preferably 5% by mass or less, in the bath agent composition of the present invention, from the viewpoint of the state of the bath water surface and storage stability. The content is more preferably 1% by mass or less, further preferably 0.8% by mass or less, further preferably 0.4% by mass or less, and further preferably substantially not contained.

  The bath agent composition of the present invention may further contain a water-soluble binder as component (D). The content of the water-soluble binder is excellent in storage stability, from the viewpoint of suppressing exudation during molding and exhibiting a good appearance, and from the viewpoint of suppressing a decrease in skin feel, for the bath of the present invention. It is preferable that it is 1-20 mass% in an agent composition, and it is more preferable that it is 3-15 mass%. The water-soluble binder (D) is thermoplastic and preferably not an aqueous solution. As such a water-soluble binder (D), polyethylene glycol, polypropylene glycol, polyoxyethylene alkyl ether, and polyoxyethylene phenol ether are preferable, and polyethylene glycol and polypropylene glycol are more preferable. In addition, the number average molecular weight of the water-soluble binder is preferably 4000 to 20000, more preferably 6000 to 13000, and further preferably 7000 to 9000 by GPC method using polystyrene as a standard from the viewpoint of formulation. When measuring polyethylene glycol as a water-soluble binder, water / ethanol is used as a solvent. When these water-soluble binders are used, two or more water-soluble binders having different number average molecular weights may be used in combination.

  The bath agent composition of the present invention is excellent in storage stability, from the viewpoint of suppressing exudation at the time of molding and exhibiting a good appearance, from the viewpoint of improving the effect of suppressing floating substances on the bath water surface. Furthermore, excipients such as calcium silicate and glucose may be contained.

  In the bath agent composition of the present invention, as a component other than the above-described components, components usually used for a bath agent may be appropriately contained. Examples of such components include the above component (A) such as potassium chloride, sodium chloride, sodium sulfate, magnesium sulfate, potassium nitrate, sodium nitrate, sodium polyphosphate, ammonium chloride, iron sulfate, sodium phosphate, and sodium thiosulfate. Inorganic salts other than carbonates that can be used, water-soluble polymers other than the above component (D) such as cationized cellulose, alcohols such as ethanol, stearyl alcohol, isopropyl alcohol, cetyl alcohol, hexadecyl alcohol, and medicinal ingredients such as herbal medicines , Pigments, fragrances and the like.

  The bath agent composition of the present invention can be produced according to a conventional method such as a compression granulation method such as extrusion granulation, a compression molding method using a press tableting machine or a briquette machine, and the form thereof is powder, granule , Granular, briquette tablet, tablet and the like, or a form obtained by granulating or molding a part of the components in advance and mixing with the remaining components. 20-200g per 150L of bath water is preferable, and, as for the usage-amount (mass) per time of the bath agent composition of this invention, 30-100g is more preferable. Thereby, an appropriate amount of generated carbon dioxide gas can be ensured, and a good feel can be imparted to the skin from after the bath to after the bath.

  Hereinafter, the present invention will be specifically described based on examples. In addition, unless otherwise indicated in a table | surface, content of each component shows the mass%.

[Examples 1-7 and Comparative Examples 1-8]
The bath agent compositions having the compositions shown in Tables 1 and 2 were prepared as tablets (50 g). Subsequently, according to the following method, the warming feeling and the state of the bath water surface were evaluated. These results are shown in Tables 1-2.

<Evaluation of warmth>
Using 10 panelists in their 20s to 40s, each tablet is poured into 150 liters of hot water (40 ° C), and the paneler is bathed in uniform hot water. The average value of 10 people was used as the evaluation score.
5: Warm up 4: Warm up slightly 3: Equivalent to hot water 2: Not warm up 1: Not warm up

<< Evaluation of the state of the bathing water >>
Each sample (50 g) was poured into 150 L of hot water (40 ° C.) and stirred uniformly. The state of the bath water surface for 10 minutes after the addition was visually evaluated according to the following criteria.
◎: There is almost no suspended matter, etc., and the water surface is highly transparent. ○: Less suspended matter, etc. △: Slightly more suspended matter, etc. ×: Many suspended matter, etc.

  From the results of Tables 1 and 2, in Comparative Examples 1 to 8, a sufficient warming effect was not obtained, or suspended matter was confirmed on the surface of the bath water although the warming effect was good. In contrast, in Examples 1 to 7, both the warm bath effect and the state of the bath water surface were good.

[Examples 8 to 9 and Comparative Examples 9 to 10]
As shown in Table 3, a granular bath preparation composition was prepared by mixing a part of the components in advance with a granulated product and mixing this with the remaining components. Subsequently, according to the following method, the exudation at the time of compression affecting storage stability and the appearance immediately after preparation were evaluated. These results are shown in Table 3.

<Breaking out during compression>
In the tableting cell, two No. 5C quantitative filter papers cut to the size of the tableting cell were stacked, and 32.8 g of the granulated product kept at 30 ° C. was put in, and the molding pressure of 10 MPa was set for 30 seconds. Compressed. After compression, the weight of the filter paper on the side not in direct contact with the granulated material was measured, and the weight of the filter paper before the test was subtracted to obtain the amount of seepage (mg).

《Bath additive appearance》
The appearance (color development of the pigment) immediately after blending of the adjusted bath salt composition was visually evaluated according to the following criteria.
A: Appearance is very good.
○: Appearance is good.
X: Deterioration of appearance is recognized.

  From the results shown in Table 3, Comparative Examples 9 to 10 which do not contain the nonionic surfactant of component (B) have a larger amount of oozing than the Examples 8 to 9, and color development of the dye is also recognized. As the appearance was unsuitable.

Claims (8)

The following components (A), (B) and (C):
(A) Carbon dioxide generator,
(B) 1 to 15% by mass of one or more nonionic surfactants selected from polyethylene glycol fatty acid ester and polyoxyethylene hydrogenated castor oil, and (C) sorbitan fatty acid ester, propylene glycol fatty acid ester and glycerin fatty acid contain one or more nonionic surfactants selected from the esters, the mass ratio of component (C) and the component (B) ((B) / (C)) is Ri der 4 to 45, and
A bath agent composition which is any of powder, granule, granule, briquette tablet or tablet .   The bath agent composition according to claim 1, wherein the component (B) is solid or semisolid at 25 ° C.   The bath agent composition according to claim 1 or 2, wherein the fatty acid residue of the polyethylene glycol fatty acid ester of component (B) has 4 to 24 carbon atoms.   The bath agent composition according to any one of claims 1 to 3, wherein the fatty acid residues of the sorbitan fatty acid ester, propylene glycol fatty acid ester and glycerin fatty acid ester of the component (C) have 4 to 24 carbon atoms.   The bath agent composition according to any one of claims 1 to 4, wherein the component (A) comprises an acid and a carbonate.   The bath agent composition according to any one of claims 1 to 5, wherein the acid contained in the component (A) is fumaric acid.   Furthermore, the bath agent composition of any one of Claims 1-6 containing the water-soluble binder (D) of number average molecular weight 4000-20000.   Furthermore, the bath agent composition of any one of Claims 1-7 containing 10 mass% or less of an oil-based component.