Powdered bath additive composition

Abstract

To provide a powdered bath agent composition comprising potassium aluminum sulfate and yellow No. 202 (1) and blue water-soluble dye, which suppresses discoloration of the exterior color of the formulation and gives a smooth skin feel with less squeakiness during and after bathing.SOLUTION: Provided is a powdered bath agent composition comprising 10 to 25% by weight of potassium aluminum sulfate and Yellow No. 202 (1). The composition comprises (a) carbonate, (b) 4 to 15% by weight tripolyphosphate, (c) sodium sulfate, and (d) blue No. 1 and / or blue No. 205. By setting the content ratio of component (a) to aluminum potassium sulfate ((a) / aluminum potassium sulfate) to 1 to 3, it is possible to suppress discoloration of the appearance color of the formulation and provide a powdered bath agent composition that feels smooth on the skin with less squeakiness during and after bathing.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a powdery bath agent composition that contains potassium aluminum sulfate, contains water-soluble pigments of (1) Yellow No. 202 and blue, suppresses discoloration of the external appearance color of the preparation, and provides a smooth skin feel with less squeaking during and after bathing.

Background Art

[0002] Conventionally, various bath agents have been developed to enjoy the feeling of a hot spring during bathing or to enhance the hot bath effect and heat retention effect. For example, a bath agent (Patent Document 1) that is said to make the skin moist after bathing and provide a smooth feeling during and after bathing by blending a cationic polymer, and a granulated product containing an organic acid, a water-soluble binder, and a nonionic surfactant, and a carbonate are blended to make the bubbles of carbon dioxide gas finer and provide a warming feeling after bathing. Examples include granular bath agents (Patent Document 2).

[0003] On the other hand, water-soluble aluminum salts such as alum and potassium aluminum sulfate have long been known as components of alum springs in hot springs, and bath agents containing potassium aluminum sulfate have been developed. For example, in Patent Document 3, a bath agent composition with good solubility is disclosed by blending potassium aluminum sulfate, carbonate, sodium metaphosphate, and a surfactant to provide a refreshing feeling.

[0004] However, when the blending amount of potassium aluminum sulfate is increased, the skin feel during bathing is not smooth and a squeaking feeling is felt, and the skin feel during bathing deteriorates. As a method for improving this, there is a method of improving the skin feel during bathing by blending a large amount of carbonate or the like to make the pH of the bath water in the highly alkaline region.

[0005] On the other hand, Yellow 202 (1), a water-soluble dye used to color bathwater, emits a bright fluorescent yellow when aqueous, and when mixed with a blue water-soluble dye, it can produce bright green bathwater such as bright green, bright blue-green, and bright yellow-green. However, the appearance of powdered bath additive compositions colored with Yellow 202 (1) and a blue water-soluble dye had poor stability over time at high temperatures, and in particular, when carbonates were included in high concentrations, the color changed significantly from green to brownish-red. Therefore, it had not been possible to obtain a powdered bath additive composition containing a high amount of aluminum potassium sulfate, Yellow 202 (1), and a blue water-soluble dye that had good stability over time in terms of appearance and provided a smooth skin feel with less squeaky sensation during bathing. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2-115115 [Patent Document 2] Japanese Patent Publication No. 2012-131740 [Patent Document 3] Japanese Patent Publication No. 2017-165698 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] Therefore, the objective is to provide a powdered bath additive composition that contains 10-25% by weight of potassium aluminum sulfate, and also contains Yellow No. 202 (1) and a blue water-soluble dye, has good temporal stability of the appearance color of the formulation, and provides a smooth skin feel with less squeaky feeling during and after bathing. [Means for solving the problem]

[0008] In view of these circumstances, the inventors conducted diligent studies and found that the aforementioned problems can be solved by including carbonate, sodium sulfate, and tripolyphosphate in specific amounts and ratios in a powdered bath additive composition containing 10 to 25% by weight of potassium aluminum sulfate and Yellow No. 202 (1) and Blue No. 1 and / or Blue No. 205, thereby completing the present invention.

[0009] In other words, the present invention relates to a powdered bath composition containing 10 to 25% by weight of potassium aluminum sulfate and Yellow No. 202 (1), wherein the following components (a) to (d): (a) Carbonate (b) Tripolyphosphate 4-15% by weight (c) Sodium sulfate (d) Blue No. 1 and / or Blue No. 205 The present invention provides a powdered bath additive composition characterized by containing a and having a ratio of the content of component (a) to potassium aluminum sulfate ((a) / potassium aluminum sulfate) of 1 to 3.

[0010] Furthermore, the present invention provides a powdered bath additive composition having an ingredient (c) content of 20% by weight or more. [Effects of the Invention]

[0011] According to the powdered bath additive composition of the present invention, even when containing 10 to 25% by weight of potassium aluminum sulfate, Yellow 202 (1), and a blue water-soluble dye, the change in the appearance color of the powdered bath additive composition over time is suppressed, and an excellent user experience can be obtained, with less squeaky feeling and a smooth skin feel during and after bathing. [Modes for carrying out the invention]

[0012] The present invention will be described in detail below. The potassium aluminum sulfate used in this invention is also known as potassium alum and is sometimes used in bath additives because it is a component of alum springs. It is available in granular form or as a powder with enhanced solubility. Bath additive compositions containing this enhance the refreshing feeling during bathing, but increasing the content can lead to an increased squeaky feeling during bathing. However, with the powdered bath additive composition of this invention, the components (a) to (d) described later can suppress the squeaky feeling during bathing and provide a smooth skin feel.

[0013] The potassium aluminum sulfate content of this invention is 10 to 25% by weight. If it exceeds 25% by weight, it may increase the squeaking sensation during bathing or worsen the stability over time.

[0014] The Yellow 202 (1) used in this invention is a water-soluble dye, and its aqueous solution emits a bright fluorescent yellow color. Therefore, bathwater colored with Yellow 202 (1) looks bright and beautiful, and it is sometimes used in bath additives mixed with various dyes. The content is not particularly limited, but 0.001 to 1.0% by weight relative to the powdered bath additive composition is preferred, and 0.01 to 0.5% by weight is particularly preferred. If it is less than 0.001% by weight, discoloration may occur due to chlorine in tap water, while if it exceeds 1.0% by weight, problems with palatability and staining properties may occur.

[0015] The carbonate of component (a) used in this invention shifts the pH of the bathwater to the alkaline range, making the skin feel smoother during bathing. The carbonate is not particularly limited, but is preferably sodium carbonate, potassium carbonate, or calcium carbonate, and is particularly preferably sodium carbonate.

[0016] The ratio of component (a) to potassium aluminum sulfate ((a) / potassium aluminum sulfate) is preferably 1 to 3. More preferably 1.5 to 2.5. If it is less than 1, the smooth skin feel during bathing will not be satisfactory, and if it exceeds 3, the stability of the appearance color over time will be poor.

[0017] The tripolyphosphate of component (b) used in the present invention is not particularly limited, and examples thereof include sodium tripolyphosphate and potassium tripolyphosphate, and sodium tripolyphosphate is preferable.

[0018] The blending amount of the tripolyphosphate of component (b) is preferably 4 to 15% by weight, more preferably 6 to 15% by weight based on the powdery bath agent composition. If it is less than 4% by weight, the smooth skin feel during bathing cannot be satisfied, and if it exceeds 15% by weight, the enhancement of the effect cannot be expected and it is uneconomical.

[0019] The blending amount of sodium sulfate of component (c) used in the present invention is preferably 20% by weight or more, more preferably 30% by weight or more based on the powdery bath agent composition. If it is less than 20% by weight, the smoothness of the skin after bathing may deteriorate.

[0020] The blending amount of Food Blue No. 1 and / or Food Blue No. 205 of component (d) used in the present invention is not particularly limited, but is preferably 0.001 to 1.0% by weight, and more preferably 0.01 to 0.5% by weight based on the powdery bath agent composition. If it is less than 0.001% by weight, decolorization may occur due to chlorine in tap water, while if it exceeds 1.0% by weight, problems such as palatability and staining property may occur.

[0021] In addition to the above components, components usually used in ordinary powdery bath agent compositions can be appropriately blended in the powdery bath agent composition of the present invention within a range not interfering with the effects of the present invention. Examples of such components include the following. (1) Acids: Inorganic acids such as boric acid, metasilicic acid, silicic anhydride, etc., and organic acids such as benzoic acid, citric acid, fumaric acid, succinic acid, tartaric acid, pyrrolidone carboxylic acid, adipic acid, salicylic acid, etc. (2) Inorganic salts: Sodium chloride, potassium nitrate, sodium nitrate, calcium nitrate, ammonium chloride, iron sulfate, sodium phosphate, sodium thiosulfate, metasilicic acid, silicic anhydride, etc. (3) Herbal medicines: *Eupatorium chinense*, *Eupatorium fortunei*, *Artemisia keiskeana*, *Cnidium officinale*, *Phellodendron amurense*, *Radix et Rhizoma Ginseng*, *Pericarpium Citri Aurantii*, *Flos Lonicerae*, *Zingiber officinale*, *Carrot*, *Cinnamomum cassia*, *Paeonia lactiflora*, *Mentha haplocalyx*, *Hypericum japonicum*, *Acanthopanax senticosus*, *Belamcanda chinensis*, *Sansevieria trifasciata*, *Dioscorea opposita*, *Saffron*, *Moutan bark*, *Chimpī*, *Aster scaber*, *Kanpī powder*, *Matricaria recutita*, *Melissa officinalis*, *Rosemary*, *Aesculus turbinata*, *Rumex acetosa*, *Arnica montana*, etc. (4) Oils and fats: Isopropyl palmitate, isopropyl myristate, cholesteryl isostearate, squalane, tri(caprylic - capric acid) glycerin, bran oil, olive oil, jojoba oil, soybean oil, liquid paraffin, etc. (5) Alcohols: Ethanol, stearyl alcohol, isopropyl alcohol, cetyl alcohol, hexadecyl alcohol, etc.

[0022] (6) Polyhydric alcohols: Glycerin, propylene glycol, sorbitol, etc. (7) Surfactants: Alkyl sulfates, polyoxyethylene alkyl ether sulfates, lauric acid diethanolamide, polyoxyethylene alkyl ethers, polyethylene glycol monostearate, etc. (8) Others: Titanium oxide, zinc oxide, talc, sulfur, ore sand, *Camellia sinensis* flower, casein, neutral clay, sodium carboxymethyl cellulose, mica powder, polyvinyl pyrrolidone, etc.

[0023] Furthermore, in the powdery bath agent composition of the present invention, in addition to the above, bactericides, preservatives, humectants, sequestering agents, water - soluble polymers, fragrances, and other components in a wide range can be blended as needed.

[0024] The powdery bath agent composition of the present invention can be produced according to a normal method.

Examples

[0025] The present invention will be specifically described below with reference to examples, but the technical scope of the present invention is not limited thereto. Unless otherwise specified, the content is expressed in weight%.

[0026] Powdered bath additive compositions having the compositions listed in Tables 1 and 2 below were prepared according to conventional methods. Expert panelists evaluated the temporal stability of the appearance color of each powdered bath additive composition at 50°C for 14 days, as well as the smoothness of the skin feel during and after bathing.

[0027] <Temporal stability of appearance color> The obtained powdered bath additive composition was filled into a glass container and stored in a constant temperature bath at 50°C for 14 days. Five expert panelists visually evaluated the color according to the following criteria. The evaluation results were determined through discussion. (Evaluation Criteria) ◎: No change in exterior color was observed. ○: A slight change in the exterior color is observed. ×: A clear change in the exterior color is noticeable.

[0028] <Skin feel during bathing> 200 liters of 40°C bathwater were added to a bathtub, and the resulting powdered bath additive composition was dissolved in it. Ten expert panelists then evaluated the feel of the bath on their skin. The feel of the bath on the skin was judged on a two-point scale: "smooth" and "not smooth," according to the following criteria. (Evaluation Criteria) ◎: 9 or more out of 10 people rated it as smooth. ○: 8 to 6 out of 10 people rated it as smooth. △: 5 to 3 out of 10 people rated it as smooth. ×: Out of 10 people, 2 or fewer rated it as smooth.

[0029] <Skin feel after bathing> 200 liters of 40°C bathwater were added to a bathtub, and the resulting powdered bath additive composition was dissolved in it. Ten expert panelists then evaluated the skin feel after bathing. The skin feel after bathing was judged on a two-point scale: "smooth" and "not smooth," according to the following criteria. (Evaluation Criteria) ◎: 9 or more out of 10 people rated it as smooth. ○: 8 to 6 out of 10 people rated it as smooth. △: 5 to 3 out of 10 people rated it as smooth. ×: Out of 10 people, 2 or fewer rated it as smooth.

[0030] [Table 1] *1: Alum (powder) (manufactured by Daimyo Chemical Industry Co., Ltd.) *2: Yellow No. 202-(1) (manufactured by Kinmi Kasei Co., Ltd.) *3: Blue No. 205 (manufactured by Kisumi Kasei Co., Ltd.) *4: CKW-5 (manufactured by Kiseki Kasei Co., Ltd.) (Titanium dioxide:Dextrin = 1:1)

[0031] As shown in Table 1, the powdered bath additive compositions in Examples 1-5, where the ratio of component (a) to aluminum potassium sulfate ((a) / aluminum potassium sulfate) was 1-3, yielded satisfactory results in all evaluated items. On the other hand, as shown in Comparative Examples 1 and 2, when the ratio of component (a) to aluminum potassium sulfate ((a) / aluminum potassium sulfate) was less than 1 (Comparative Example 1), satisfactory results were not obtained in terms of the temporal stability of the appearance color and the skin feel during bathing. When it exceeded 3 (Comparative Example 2), the temporal stability of the appearance color deteriorated.

[0032] [Table 2] *5: Blue No. 1 (manufactured by Kinmi Kasei Co., Ltd.) *6: Blue No. 2 (manufactured by Kinmi Kasei Co., Ltd.)

[0033] As shown in Table 2, Examples 6-10, which contained 4-15% by weight of sodium tripolyphosphate, sodium sulfate, and either Blue 205 or Blue 1 as the blue water-soluble dye, yielded satisfactory results in all evaluated items. On the other hand, when sodium tripolyphosphate was not present (Comparative Example 3) or when it was less than 4% by weight (Comparative Example 4), the smooth skin feel during bathing was inferior. Furthermore, when sodium chloride was used instead of sodium sulfate (Comparative Example 5), satisfactory results were not obtained in terms of the temporal stability of the appearance color and the skin feel after bathing. When Blue 2 was used as the blue water-soluble dye (Comparative Example 6), the temporal stability of the appearance color was significantly worse.

[0034] The results in Tables 1 and 2 show that the powdered bath additive compositions of Examples 1 to 10, which satisfy the constituent requirements of the present invention, were excellent in terms of the stability of appearance color over time and usability (skin feel during and after bathing). On the other hand, Comparative Examples 1 to 6, which do not satisfy the constituent requirements of the present invention, were unable to achieve all the effects of stable appearance color over time and usability.

[0035] Other embodiments of the present invention are shown below. In all cases, satisfactory results were obtained in the same evaluations as described above.

[0036] (Example 11: Powdered bath additive) (Ingredients) (Weight%) 1. Aluminum potassium sulfate *1 12.0 2. Sodium carbonate 20.0 3. Sodium tripolyphosphate 8.0 4. Sodium sulfate 42.15 5. Yellow No. 202 (1) *2 0.05 6. Blue No. 205 *3 0.1 7.Fragrance 2.0 8. Phellodendron bark extract 0.1 9. Rehmannia glutinosa extract 0.1 10. Magnesium aluminometasilicate 2.0 11. Ascorbic acid 3.0 12. Sodium bicarbonate 0.5 13. Titanium dioxide / dextrin *4 10.0 (Preparation method) A powdered bath additive was prepared by mixing ingredients 1 to 13. [Industrial applicability]

[0037] According to the present invention, by using carbonate, sodium tripolyphosphate, and sodium sulfate in combination with a powdered bath additive composition containing 10-25% by weight of potassium aluminum sulfate, Yellow 202 (1), and a blue water-soluble dye, and by setting the ratio of carbonate to potassium aluminum sulfate content (carbonate / potassium aluminum sulfate) to 1-3, it is possible to provide a powdered bath additive composition that suppresses changes in appearance color over time, has less squeaky feeling during and after bathing, provides a smooth skin feel, and offers an excellent user experience.

Claims

[Claim 1] A powdered bath composition containing 10 to 25% by weight of potassium aluminum sulfate and 0.001 to 1.0% by weight of Yellow No. 202 (1), wherein the following components (a) to (d): (a) carbonate (b) Tripolyphosphate 4-15% by weight (c) Sodium sulfate 20% by weight or more (d) Blue No. 1 and / or Blue No. 205 0.001 to 1.0% by weight A powdered bath additive composition characterized by containing the above, and having a ratio of the content of component (a) to potassium aluminum sulfate ((a) / potassium aluminum sulfate) of 1 to 3.

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