JPS6281432A - Water-soluble high-molecular molding - Google Patents

Abstract

PURPOSE:To provide the titled molding useful as bath preparations, aromatics, cosmetics, pharmaceutical preparations, etc., by incorporating bubbles and perfumes in a water-soluble high-molecular compd. to give a specified specific gravity. CONSTITUTION:An aq. soln. of a water-soluble high-molecular compd. such as pullulan, etc., a surfactant such as an anionic surfactant (e.g., an alkylsulfate salt such as sodium laurysulfate), etc., as a foaming agent, a small amount of perfumes and optionally, a humectant, a coloring material, an antioxidant, etc., is treated by an agitator, etc., to obtain a soln. which gives a finished article having a specific gravity of less than 1 after molding. The soln. is thin- cast on a glass plate to form a sheet, which is then dried to obtain a water-soluble high-molecular molding.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a water-soluble polymer molded product containing air bubbles, which can be used, for example, as a bath additive or fragrance, as well as cosmetics and pharmaceuticals. This invention relates to water-soluble polymer molded products that can be widely used in the fields of external products, pharmaceuticals, miscellaneous goods, etc.

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[Conventional technology]

BACKGROUND ART Granular or tablet bath salts containing inorganic salts as a main ingredient are conventionally known as bath salts used in baths. As the inorganic salt, sodium chloride, sodium carbonate, sodium sesquicarbonate, sodium hydrogen carbonate, sodium sulfate, etc. are used. Traditional bath salts are used by dissolving them in bath water when taking a bath.

[Problem that the invention seeks to solve]

However, the above-mentioned conventional bath additives dissolve immediately when placed in hot water or sink to the bottom.
It is neither aesthetically pleasing nor pleasing to the viewer.

The main object of the present invention is to provide a product with unique properties not possessed by conventional bath additives.

[Means for solving problems]

The above-mentioned object can be achieved by a water-soluble polymer molding characterized in that it contains bubbles.

As used herein, the term "molded product" refers to a solid having an arbitrary fixed shape, and includes, for example, a spherical, rod-shaped, film-shaped, sheet-shaped, and the like. Dimensions vary within a wide range depending on the shape and application of the molding. For example, when a disc-shaped sheet-like molded product is used as a bath additive, it may have a diameter of about 0.5 cm to about 5 cm.

The water-soluble polymer compound that can be used for producing the molded article of the present invention includes any natural and synthetic water-soluble polymer compounds. Examples of the water-soluble polymer compounds include natural plant compounds such as gum arabic, quince seed mucilage, gum tragacanth, carrageenan,
Agar, guar gum, karaya gum, locust bean gum, pectin, galactan, pullulan or xanthan gum, natural animal compounds such as gelatin, casein, potassium caseinate, sodium caseinate or sodium chondroitin sulfate, cellulosic semi-synthetic polymers such as methyl cellulose , ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose or sodium cellulose sulfate, starch-based semi-synthetic polymer compounds such as carboxymethyl starch, methyl hydroxypropyl starch or dextrin, alginic acid-based semi-synthetic polymer compounds such as alginate propylene glycol ester or Alginate, synthetic polymer compounds such as polyvinyl alcohol, polyvinylpyrrolidone, polyvinylethyl ether, carboxyvinyl polymer, polyacrylic acid, polyacrylamide, etc., or appropriate copolymerization thereof with vinyl monomers such as vinyl acetate, methyl methacrylate, and styrene. Examples include merging.

By appropriately selecting the above-mentioned polymer compound, or by appropriately selecting two or more of the above-mentioned polymer compounds and blending them in an appropriate ratio, it is possible to freely adjust the dissolution time of the polymer molded product. can.

Among the above-mentioned water-soluble polymer compounds, pullulan is preferable both in terms of effectiveness and also in terms of its high water solubility, and therefore it is preferable to construct a molded article using pullulan as a main component.

When producing the water-soluble polymer molded article of the present invention, various surfactants are used as cell regulators.

Examples of surfactants include anionic surfactants such as alkyl sulfates such as sodium lauryl sulfate, N-acylamino acid salts such as sodium lauroyl glutamate and potassium lauroyl glutamate, potassium coconut oil fatty acids,
Soaps such as sodium coconut oil fatty acid and triethanolamine coconut oil fatty acid, alkyl phosphates such as sodium oleyl phosphate and potassium oleyl phosphate, cationic surfactants such as cetyltrimethylammonium chloride, dilauryldimethylammonium chloride, and dichloride. Aliphatic quaternary ammonium salts such as polyoxyethylene oleyl methyl ammonium, aromatic quaternary ammonium salts such as laurylpyridinium chloride, nonionic surfactants such as polyoxyethylene isostearyl ether, polyoxyethylene polyoxypropylene stearyl ether, etc. Alkyl polyoxyethylene ether, polyoxyethylene coconut oil fatty acid ester, alkyl polyoxyethylene ester such as ethylene glycol distearate, glycerin polyoxyethylene ether such as polyoxypropylene glyceryl ether, diglycerin ester such as diglyceryl oleate, isostearin Sorbitan esters such as acid sorbitan, sucrose esters such as sucrose coconut oil fatty acids, and amphoteric surfactants such as amine oxides such as lauryl dimethylamine oxide, stearyl-
Examples include betaines such as N,N-dimethylbetaine and imidacillin derivatives such as hydroxyethyl diphenylimidacillin.

The amount of the surfactant used as a cell regulator used in the present invention is preferably 1 to 60% by weight, and particularly preferably 10 to 30% by weight, based on the total weight of the molded product.

Air bubbles can be easily incorporated into the molded product of the present invention by a conventionally known stirring method.

For example, an aqueous solution containing a water-soluble polymer compound and a foam regulator is treated with a conventional stirrer, homomixer, or the like.

At this time, it is preferable to contain bubbles so that the specific gravity of the finished product after molding is less than 1 by appropriately selecting the amount of the bubble regulator and processing conditions such as stirring.

In this way, the water-soluble polymer compound solution containing air bubbles is
The molded product of the present invention can be obtained by molding and drying by conventionally known methods.

For example, a sheet-like molded product can be obtained by spreading the above-mentioned solution thinly on a glass plate or plastic plate to form a sheet and drying it with hot air. Alternatively, a molded article of any shape can be produced by pouring the solution into a suitable vat and freeze-drying it.

The water-soluble polymer molded article according to the present invention can contain various other components depending on its use. For example, when used in the field of cosmetics, moisturizers, detergents, perfumes, pigments, antioxidants, preservatives, etc. can be added. When used in the pharmaceutical field, various pharmaceutically active ingredients can be incorporated. In addition, fungicides, insecticides, ultraviolet absorbers, fertilizers, etc. can also be added depending on the purpose.

The first general use of the water-soluble polymer molded product according to the invention is as a product that is stored in a solid state until used and then dissolved in water at the time of use, in particular: Preferably, the product is pleasing to the viewer when dissolved. Such products are, for example, bath salts. When the molded article according to the present invention is used as a bath additive, it can be used alone, but
More preferably, it is used in combination with conventionally known bath salt bath additives. In that case, the molded product according to the invention and the bath salt may be enclosed together in a single-use package, the molded product may be temporarily fixed on the surface of the bath salt, or the molded product may be placed inside the bath salt. You can insert things.

Various other uses of the water-soluble polymer molded product according to the present invention are conceivable. For example, in the field of cosmetics, there are face masks, etc. In the pharmaceutical field, for example, it can be used as a medicinal patch, a bandage for wound treatment, etc., and it can also be used as a perfume.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.
This is not intended to limit the technical scope of the invention.

Precept 111 (sha) 1 encounter Sheets were made from the ingredients listed in Table 1 below.

Examples 1 to 16: In purified water in an amount four times the weight of the water-soluble polymer compound as the main component, the water-soluble polymer compound as the main component and a surfactant, and if blended, a small amount Another water-soluble polymer compound, fragrance, and coloring matter were added and dissolved in this order.

The resulting solution was stirred at 8,000 rpm using a homomixer until air bubbles were sufficiently incorporated into the solution (
°about 1-30 minutes). Next, the bubble-containing solution was poured onto a glass plate or plastic plate (9) to form a sheet, which was then dried and peeled off with hot air at 100°C to obtain a sheet with a thickness of 0.2 m. .

Comparative Examples 1 to 4: A water-soluble polymer compound was added to purified water in an amount four times its weight, followed by optionally adding a fragrance, and then adding and dissolving the dye. Subsequently, homomixer stirring (8,OO
Orpm) for about 1 to 30 minutes, and then a sheet with a thickness of 0.2 fl was obtained in the same manner as in each of the above examples.

Margin below Note 1 --- Average molecular weight 200,000 Note 2 ---
------- Degree of saponification 88% Average degree of polymerization 300 (Examples 3 and 4), 500 (Examples 11 and 12, Comparative Examples 3 and 4), 700 (Examples 9 and 10) Note 3- −−−−−Molar Substituition (
Molar 5ubstition) = 2.5
Note 4: Copper type Note 5: Amanita extract Note 6:
---・-Average molecular weight 80,000 soles Biaofun Vertical properties Each of the sheets of Examples 1 to 16 and Comparative Examples 1 to 4 was cut into pieces 1 cm wide and 1 cm long, and cut with tweezers to approx. The sheet was placed in hot water at 40°C (the hot water itself was essentially stationary and motionless), and the sheet was observed to float (sink) and move on the hot water surface, and The dissolution time was measured. The results are shown in Table 2.

As is clear from Table 2, the sheets of Examples 1 to 16, which contained air bubbles using a surfactant, quickly rose to the surface of the hot water when placed in the vortex. It floats and floats well. Furthermore, it can be seen that the movement on the surface of the hot water is active, and furthermore, the dissolution time can be adjusted arbitrarily.

〔Effect of the invention〕

Since the water-soluble polymer molded article of the present invention contains air bubbles using a surfactant, it does not sink in water. In particular, those with a specific gravity of less than 1 float on the surface of water, and when placed in a whirlpool as a bath additive, for example, they exhibit variable movements on the surface of the water, entertaining viewers. This movement on the water surface is irregular and very active, like Brownian motion, and is independent of the movement of the water itself and occurs even when the water is stationary. This movement is due to the action of the surfactant contained in the molded product. Therefore,
By selecting a surfactant, various changes in movement in water can be achieved. Furthermore, it is easy to make the shape, for example, into a petal shape. Furthermore, the dissolution time of the molded article of the present invention can be easily adjusted by appropriately selecting and combining water-soluble polymer compounds.

Claims (1)

[Scope of Claims] 1. A water-soluble polymer molded product characterized by containing bubbles. 2. The water-soluble polymer molded article according to claim 1, which contains a fragrance. 3. The water-soluble polymer molded article according to claim 1, which has a specific gravity of less than 1.