JP6955688B2 - Bath additive - Google Patents

Description

The present invention relates to bath salts.

Conventionally, bath salts containing organic acids and carbonates are excellent because carbon dioxide gas is generated in the bath water, and the carbon dioxide gas promotes blood circulation and enhances the feeling of warmth. It is widely known as a bath salt. For example, Patent Document 1 discloses a granulated product containing an organic acid, a water-soluble binder and a specific amount of a nonionic surfactant, and a granular bath preparation composition containing a carbonate, which is a foam of carbonic acid gas. The challenge is to bring about an excellent feeling of warmth after bathing by refining.

Bathing agents using such surfactants can also be applied to products in the so-called "bubble bath" category, in which carbon dioxide gas is generated and bubbles due to the surfactant are generated on the surface of the bath water to provide a comfortable feeling of use. It is a useful technique. For example, Patent Document 2 discloses a granulated product containing a foaming surfactant, an organic acid and a water-soluble polymer, and a powder bubble bath composition containing a specific carbonate, which comprises carbonic acid gas. The object is to improve the durability of the foam on the bath water surface by making the foam finer and to give a good feeling of use. Further, Patent Document 3 discloses a solid bubble bath composition containing a specific amount of a carbonate and an acid while containing a specific surfactant and an oily component in a specific amount ratio. The challenge is to enhance the feel of the foam on the surface and to give the skin a moist feeling after bathing.

Japanese Unexamined Patent Publication No. 2012-131740 Japanese Unexamined Patent Publication No. 2012-131739 Japanese Unexamined Patent Publication No. 9-12443

However, for example, when the techniques described in Patent Documents 1 to 3 are adopted, a colorant is added although sufficiently fine bubbles can be generated on the bath water surface in order to obtain a bubble bath type bath salt. Otherwise, a solid bath salt with a good liquid color could not be obtained.

Therefore, an object of the present invention is to obtain a bath agent in which fine bubbles are generated on the surface of the bath water and the bath water has a good liquid color.

That is, the present invention is the following (1) to (8).
(1) Organic acids, carbonates,
With tea leaves and / or tea leaf extracts having an anthocyanin content of 0.05% by weight or more,
Bath salts containing powders containing.
(2) The bathing agent according to (1), wherein the organic acid is at least one selected from citric acid, fumaric acid, tartaric acid, adipic acid, malic acid, and succinic acid.
(3) The bath agent according to (1) or (2), wherein the carbonate is at least one selected from sodium carbonate and sodium hydrogen carbonate.
(4) The bath according to any one of (1) to (3), wherein the tea leaf and / or the tea leaf extract is a tea leaf and / or a tea leaf extract derived from Camellia sinensis (L.) Kuntze sp Sunrouge. Agent.
(5) The bath agent according to any one of (1) to (4), further containing carboxymethyl cellulose or a salt thereof.
(6) The bath salt according to any one of (1) to (5), wherein the bath salt is a solid.
(7) The organic acid powder, the carbonate powder, and the tea leaves and / or the tea leaf extract are mixed and molded.
How to make bath salts.
(8) A method for producing a bath agent, which comprises mixing and molding an organic acid powder, a carbonate powder, a tea leaf and / or a tea leaf extract, and carboxymethyl cellulose or a salt thereof.

According to the present invention, it is possible to obtain a bath agent having a good liquid color in the bath water. Further, when the bath salt is made into a solid state, a bath salt having good handleability can be obtained.

FIG. 1 is a photograph showing the results in Example 1. FIG. 2 is a photograph showing the results in Comparative Example 1.

Hereinafter, the present invention will be described in detail.

[tea leaf]
As the tea leaves of the bath agent of the present invention, tea leaves having an anthocyanin content of 0.05% by weight or more are used. Examples of tea leaves having an anthocyanin content of 0.05% by weight or more include hybrids of Camellia sinensis and Camellia tariensis, improved species thereof, and tea leaf powders of closely related species, and Camellia sinensis and Camellia tariensis. Examples of hybrids with Camellia sinensis (L.) Kuntze sp Sunrouge (Camellia sinensis (L.) Kuntze sp Sunrouge), Tea Intermediate Mother Honno No. 6 (F95181) can be mentioned, for example, Saint Rouge (Ministry of Agriculture, Forestry and Fisheries Variety Registration No. 21262, Scientific Name Camellia sinensis (L.) Kuntze sp Sunrouge).

In the present specification, the leaves may include petioles and / or stems in addition to leaf blades.

In the present specification, the term "tea leaves" refers to those produced by performing a treatment including drying on the collected fresh leaves. The tea leaves may be produced through heating (eg, steaming, roasting in a kettle), kneading treatment, and / or fermentation treatment. Therefore, in the present specification, the tea leaves are produced by subjecting the fresh leaves to a treatment including heating and drying, and the fresh leaves are not heat-treated and dried or other treatment (eg, freeze-drying). It may be the one that only performed.

The method of cultivating the leaves is not limited, and the leaves may be cultivated by blocking natural light with a good shade or the like, or may be cultivated under natural light without blocking.

There is no limitation on the time when the leaves are collected, and the tea leaves may be any of new tea, old tea, spring bancha, first tea, second tea, third tea, fourth tea, autumn bancha and the like.

[Organic acid]
Examples of the organic acid of the solid bathing agent of the present invention include citric acid, fumaric acid, tartaric acid, adipic acid, malic acid, and succinic acid. Includes at least one selected from.

[Carbonate]
Examples of carbonates of the solid bath salt of the present invention include sodium carbonate, sodium hydrogencarbonate, sodium sesquicarbonate, and potassium salts thereof.

Since the organic acid of the solid bath salt of the present invention and the carbonate react in water to generate carbonic acid gas, the solid bath salt solid bath salt can be made to have effervescent properties. Further, since the solid bath salt of the present invention contains tea leaves having an anthocyanin content of 0.05% by weight or more, the bath water has a good liquid color by containing an organic acid.

[Carboxymethyl cellulose]
The solid bath salts of the present invention contain carboxymethyl cellulose (CMC) and / or salts thereof. The method for producing carboxymethyl cellulose or a salt thereof is not particularly limited, and examples thereof include a method for producing a carboxymethylation reaction on a cellulose raw material.

As the raw material for cellulose, natural cellulose such as cellulose produced by microorganisms such as bleached or unbleached wood pulp, purified linter, and acetic acid bacteria, or cellulose is dissolved in some solvent such as copper ammonia solution or morpholin derivative and spun again. Examples thereof include regenerated cellulose, fine cellulose depolymerized by hydrolysis, alkaline hydrolysis, enzymatic decomposition, blasting treatment, vibration ball mill treatment, etc. of the cellulosic material, or mechanically treated fine cellulose.

In the carboxymethylation reaction, a lower alcohol may be used as a solvent. The amount of the solvent is preferably 3 to 20 times by weight as much as that of cellulose as a bottoming material. Examples of the lower alcohol include methanol, ethanol, n-propyl alcohol, isopropyl alcohol, n-butanol, isobutanol, tertiary butanol and the like alone, or a mixture of two or more kinds and water. The mixing ratio of the lower alcohol in the mixing medium is 60 to 95% by weight.

In the carboxymethylation reaction, a mercerizing agent is usually used. The amount of the mercerizing agent is preferably 0.5 to 20 times mol per glucose residue of cellulose as a bottoming material. Examples of the mercerizing agent include alkali metal hydroxides. Examples of the alkali metal hydroxide include sodium hydroxide and potassium hydroxide.

In the carboxymethylation reaction, a mercerization reaction is usually carried out by mixing a bottoming material, a solvent and a mercerizing agent. The reaction temperature of the mercerization reaction is usually 0 to 70 ° C, preferably 10 to 60 ° C. The reaction time of the mercerization reaction is usually 15 minutes to 8 hours, preferably 30 minutes to 7 hours.

In the carboxymethylation reaction, an etherification reaction is usually carried out using a carboxymethylating agent after the mercerization reaction. The amount of the carboxymethylating agent in the etherification reaction is preferably 0.05 to 2.0 times mol per glucose residue. The reaction temperature of the etherification reaction is 30 to 90 ° C, preferably 40 to 80 ° C. The reaction time of the etherification reaction is usually 30 minutes to 10 hours, preferably 1 hour to 4 hours.

The degree of substitution (DS value) of the carboxymethyl group per glucose residue of carboxymethyl cellulose or a salt thereof is preferably 0.4 or more, and more preferably 0.5 or more. The degree of substitution (DS value) of the carboxymethyl group per glucose residue of carboxymethyl cellulose or a salt thereof is preferably 2.0 or less, more preferably 1.6 or less, and is 1.1. It is more preferable to have. The degree of substitution (DS value) of the carboxymethyl group per glucose residue of carboxymethyl cellulose or a salt thereof is preferably 0.4 to 2.0, more preferably 0.5 to 1.6.

The degree of carboxymethyl substitution can be measured as follows. Weigh approximately 2.0 g of the sample and place it in an Erlenmeyer flask with a 300 mL stopper. 100 mL of a solution prepared by adding 100 mL of special grade concentrated nitric acid to 1000 mL of methanol nitrate is added, and the mixture is shaken for 3 hours to desalinate the carboxymethyl cellulose salt (CMC), and H-type carboxymethyl cellulose (hereinafter, also referred to as “H-CMC”). To. Weigh 1.5 to 2.0 g of dry H-CMC dried H-CMC and place it in an Erlenmeyer flask with a 300 mL stopper. Wet H-CMC with 15 mL of 80% methanol, add 100 mL of 0.1 N NaOH and shake at room temperature for 3 hours. Using phenolphthalein as an indicator, excess NaOH can be back titrated with 0.1 N H2SO4 and CM-DS can be calculated by the following equation.
A = [(100 × F-0.1N H2SO4 (mL) × F') × 0.1] / (H-CMC absolute dry mass (g))
CM-DS = 0.162 x A / (1-0.058 x A)
A: 1N NaOH amount (mL) required to neutralize 1 g of H-CMC
F': 0.1N H2SO4 factor F: 0.1N NaOH factor

The molecular weight of carboxymethyl cellulose or a salt thereof is preferably 100,000 to 300,000, more preferably 150,000 to 250,000. The molecular weight can be measured by the method shown in the examples.

The 1% viscosity of carboxymethyl cellulose or a salt thereof is preferably 300 or more, more preferably 500 or more. The 1% viscosity of carboxymethyl cellulose or a salt thereof is preferably 2000 or less, more preferably 1500 or less, and even more preferably 1100 or less. The 1% viscosity of carboxymethyl cellulose or a salt thereof is preferably 300 to 2000, more preferably 500 to 1100. The viscosity can be measured by the method shown in the examples.

The salt of carboxymethyl cellulose may be either an organic salt or an inorganic salt, but an inorganic salt is preferable, and a sodium salt is more preferable.

The carboxymethyl cellulose or a salt thereof may be one kind of carboxymethyl cellulose or a salt thereof, a combination of two or more kinds of carboxymethyl cellulose, a combination of two or more kinds of carboxymethyl cellulose salts, and a combination of two or more kinds of carboxymethyl cellulose and its salt. May be.

The average particle size of the carboxymethyl cellulose of the present invention or a salt thereof is not particularly limited, but it is preferable to carry out a pulverization treatment, for example. The average particle size of such carboxymethyl cellulose or a salt thereof is preferably 0.1 to 300 μm, more preferably 10 to 100 μm. If the average particle size of carboxymethyl cellulose or a salt thereof is less than 0.1 μm, production may become complicated. On the other hand, if their average particle size is more than 300 μm, it may be difficult to uniformly mix them with the food used as the shape-retaining agent.

The bath salt of the present invention may be packaged and used as a tea bag. In that case, it is preferable because the tea leaves do not diffuse into the bath water.

Packaging materials include, for example, natural fibers, semi-synthetic fibers, or paper, cloth or non-woven fabrics made from synthetic fibers.

Hereinafter, the present invention will be specifically described based on examples. Unless otherwise specified in the table, the content of each component indicates mass%.

[Examples 1 and 2, Comparative Examples 1 and 2]
According to the formulation shown in Table 1, organic acid, carbonate, tea leaves (Saint Rouge or Yabukita), carboxymethyl cellulose (manufactured by Nippon Paper Industries, Ltd., trade name: Sunrose SN30C, DS value 0.55 to 0.65) ) Was mixed. The obtained mixture was placed in a tableting cell and molded to obtain a solid bath salt.

Using the obtained solid bath salt, each evaluation was performed according to the method shown below. The results are shown in Table 1.

[Liquid color]
1000 mL of bath water (40 ° C.) was put in a 2000 mL beaker, one bath salt was added, and the liquid color was photographed with a camera.

[Handling]
100 mL of bath water (40 ° C.) was placed in a 2000 mL beaker, one bath salt was added, and the handleability at that time was evaluated according to the following criteria.

◯: No need to measure the amount added ×: No need to measure the amount added

Claims (8)

A bathing agent containing an organic acid, a carbonate, and a tea leaf and / or a tea leaf extract derived from Camellia sinensis (L.) Kuntze sp Sunrouge having an anthocyanin content of 0.05% by weight or more. The bathing agent according to claim 1, wherein the organic acid is at least one selected from citric acid, fumaric acid, tartaric acid, adipic acid, malic acid, and succinic acid. The bath agent according to claim 1 or 2, wherein the carbonate is at least one selected from sodium carbonate and sodium hydrogen carbonate. The bath salt according to any one of claims 1 to 3, wherein the organic acid, the carbonate, and the tea leaves and / or the tea extract are powders. The bath salt according to any one of claims 1 to 4, further comprising carboxymethyl cellulose or a salt thereof. The bath salt according to any one of claims 1 to 5, wherein the bath salt is a solid. The powder of organic acid, the powder of carbonate, and the powder of tea leaves and / or tea leaf extract derived from Camellia sinensis (L.) Kuntze sp Sunrouge having an anthocyanin content of 0.05% by weight or more are mixed and molded. How to make bathing agent. Organic acid powder, carbonate powder, tea leaves and / or tea leaf extract powder derived from Camellia sinensis (L.) Kuntze sp Sunrouge with anthocyanin content of 0.05% by weight or more, and carboxymethyl cellulose or its extract. A method for producing a bathing agent, which is mixed with salt and molded.

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