JPH0466203B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for producing a highly stable foamable granulated composition that does not cause expansion or rupture of packaging bags due to gas generation during storage. BACKGROUND ART Conventionally, tablets that dissolve in a short time while generating carbon dioxide gas when placed in water have been found in the pharmaceutical and food fields. These blowing agents are known as powders made by mixing sodium bicarbonate with a solid acid, or by mixing peroxysulfate or peroxyhydrogensulfate with a hydrogen peroxide addition compound such as sodium percarbonate or sodium perborate. . Compositions containing chlorinated isocyanuric acid in addition to the above-mentioned hydrogen peroxide compound are also known as foaming agents, and are used as household bath water cleaners, denture cleaners, kitchen cleaners, etc.
Its uses are extremely wide and useful, from diapers to pet deodorizers. However, the blowing agent containing the above-mentioned chlorinated isocyanuric acid is extremely sensitive to moisture, and therefore, the raw materials and products must be handled and stored with great care. For example, when powders, granules, or tablets containing the above-mentioned foaming agents are exposed to the outside air, they absorb moisture from the outside air and generate a corresponding amount of gas, which not only results in poor foaming properties during use, but also sterilization and The concentration of active oxygen or active chlorine, which is effective for bleaching, deodorization, etc., decreases. To prevent this, the foaming agent is usually packed in a sealed package such as an aluminum laminate film. However, the moisture absorbed before packaging generates gas that can cause the packaging bag to expand or, in extreme cases, burst. Regarding the sensitivity of blowing agents, there have been several proposals aimed at solving these problems, but nothing satisfactory has yet been achieved. For example, in the case of an effervescent agent using sodium bicarbonate and a solid acid, tablets are made into multilayer tablets, and in Japanese Patent Publication No. 58-24361, a hydrogen peroxide adduct is surface-coated with sodium carbonate and sodium sulfate. Although methods have been proposed to do this, foaming in water during use is insufficient, and surface coating treatment is quite costly. Furthermore, in Japanese Patent Publication No. 1983-101199, aluminum/
As a method of suppressing corrosion of polyethylene laminate packaging bags by decomposed chlorine gas generated from chlorinated isocyanuric acid, we have proposed that this can be achieved by mixing anhydrous zeolite, which does not contain water of crystallization. However, this method has no effect on suppressing the generation of decomposed gas from the system of chlorinated isocyanuric acid mixed with a hydrogen peroxide compound, and the field of use is limited because zeolite itself is insoluble in water. Undesirable. In view of the above points, the present researchers conducted intensive research and found that
In addition, if the particle size of the chlorinated isocyanuric acid in the above-mentioned foaming agent composition is increased to a certain level or more to obtain a foamable granulated composition, it will be extremely stable and the generation of decomposed oxygen gas will stop at a certain value. I found something to do. That is, the present invention provides a method for producing a foamable granulated composition containing a hydrogen peroxide compound and chlorinated isocyanuric acid as two essential components, in which the particle size of chlorinated isocyanuric acid is 75 to 1000 μm as a raw material during granulation. This is a method for producing a storage-stable foamable granulated composition characterized by using chlorinated isocyanuric acid. In the present invention, chlorinated isocyanuric acid refers to alkali metal salts of chlorinated isocyanuric acid such as sodium chlorinated isocyanurate and potassium chlorinated isocyanurate, and in practice, anhydride with as little water content as possible is preferred. The foaming agent granulated composition of the present invention is in the form of granules or tablets, and the granulation method may be any known method.
It is necessary to use a mixture of chlorinated isocyanuric acid with a particle size of 75 to 1000μ and other ingredients uniformly mixed as a raw material for granulation. Industrially, a method of obtaining granules by compressing and granulating the above-mentioned blend using a pressure roll is preferred. In addition, when obtaining tablets, a method in which a mixture of chlorinated isocyanuric acid with a particle size of 75μ to 1000μ and other ingredients is uniformly mixed is used;
There is also a method of tabletting using the above granules. The particle size of the chlorinated isocyanuric acid used in the method of the present invention is 90% or more in the range of 75μ to 1000μ, preferably 90% or more in the range of 150μ to 700μ. If the particle size of chlorinated isocyanuric acid is less than 75μ, the stability of the blowing agent granulation composition is low, and if it is more than 1000μ, mixing with the hydrogen peroxide compound becomes uneven, especially when molding granules or small tablets. Segregation occurs, which is undesirable. The ingredients other than chlorinated isocyanuric acid may be in the form of powder or granules. As the hydrogen oxide addition compound used in the present invention, sodium peroxide and sodium perborate monohydrate are particularly preferred. The mixing ratio of the hydrogen peroxide compound and chlorinated isocyanuric acid, which are essential components of the present invention, is such that 5 to 500 parts by weight of chlorinated isocyanuric acid is added to 100 parts by weight of the hydrogen peroxide compound to impart foaming properties. preferable. Foamability is low in other ranges. Furthermore, during granulation, alkali builders such as sodium sulfate, sodium silicate, and sodium phosphate, binders such as mannitrate and lactose, surfactants such as sodium lauryl sulfate and sodium α-olefin sulfonate, and pigments are added as necessary. It is preferable to add molding aids such as , fragrance, and furthermore polyethylene glycol, stearate, and talc. The foamable granulated composition obtained by the above method generates less decomposed gas and stops at a constant value, so the packaging bag does not expand or burst due to gas generation during storage, and has excellent storage stability. The present invention will be explained in detail below using Examples and Comparative Examples, but the technical scope of the present invention is not limited thereto. First, the raw materials used for compounding, the granulation method, the tableting method, and the evaluation method of the obtained granules will be described. Table 1 shows the hydrogen peroxide adduct and chlorinated isocyanuric acid used.

【table】

[Operating conditions of pressure roll machine]

Roll; Diameter: 160 mm Width: 60 mm Flake thickness: 2.3 to 3.2 mm Roll rotation speed: 15 rpm Oil pressure: 87 Kg/cm ² , linear pressure: 1.5 t/cm Tablet manufacturing method Granules were obtained by the above method, and the granules were made into a diameter of 20 mm.
After filling a mm mortar with 2.0g, put a pestle on top of it,
A pressure of 600 kg/cm ² is applied using a hydraulic press.
Compression molding yields tablets with a diameter of 20 mm and a thickness of 3.8 mm. Stability evaluation method Polyethylene terephthalate/Polyethylene/
Aluminum laminate sheet made of aluminum/polyethylene (thickness: 20/15/12/30μ)
Make a small bag by stacking two 5cm x 5cm sheets and heat sealing on three sides, put 2g of granules or 1 tablet (2g) into this bag, then heat seal and close. Then, insert a syringe needle into one of the four corners to remove the air completely, and heat seal the needle hole to close it. The granules or tablets filled in the aluminum bag prepared in this way are placed in a constant temperature bath at 55℃ for one week, and after one week, the gas (oxygen) inside the aluminum bag is collected by injection to determine the amount generated. . Examples 1 to 10 and Comparative Examples 1 to 6 A granular foamable granulated composition was produced by blending according to the above method at the blending ratio shown in Table 2, and the stability was evaluated using the above stability evaluation method. I went. The stability evaluation results are also shown in Table 2.

【table】

[Table] As shown in Table 2, it is better to use chlorinated isocyanuric acid in the method of the present invention with a particle size of 75μ or more, mix it with other ingredients, and granulate it than to use powdered chlorinated isocyanuric acid in the comparative example. The amount of gas generated is small and the stability is good. Examples 11-12 and Comparative Examples 7-8 A granular effervescent granulated composition was produced by blending according to the method described above at the blending ratio shown in Table 2, and was compressed to obtain a tablet. The stability evaluation results of this tablet are also shown in Table 3.

[Table] As shown in Table 2, it is better to use chlorinated isocyanuric acid in the method of the present invention with a particle size of 75μ or more, mix it with other ingredients, and form tablets than to use powdered chlorinated isocyanuric acid in the comparative example. The amount of gas generated is small and the stability is good.

Claims (1)

[Claims] 1. In the method of manufacturing a foamable granulated composition containing a hydrogen peroxide addition compound and chlorinated isocyanuric acid as two essential components, chlorinated isocyanuric acid having a particle size of 75 to 1000 μ is used as a raw material during granulation. A method for producing a storage-stable foamable granulated composition characterized by: