JPH0574439B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a bath water cleaner. [Prior Art and Problems to be Solved by the Invention] Conventionally, bath water cleaners containing bleaching disinfectants as a main ingredient have been used for cleaning bath water. However, although chlorine-based bleaching disinfectants such as dichloroisocyanurate that generate hypochlorous acid in solution have excellent bleaching and disinfecting effects, when used as the main component of bath water cleaners, chlorine It has drawbacks such as emitting odors and erasing the color of bath additives. Furthermore, inorganic peroxides, which are oxygen bleaching agents, have advantages such as being odorless and not changing the color of bath additives when used in bath water cleaners. However, it has poor stability during storage, decomposes and generates oxygen gas, and sometimes does not exhibit the purifying ability as expected.
This may cause problems such as corrosion of the packaging container.
For this reason, methods have been proposed in which inorganic peroxides are used in combination with various stabilizers. However, even if these stabilizers are added, the stability of the inorganic peroxide cannot be said to be sufficient. Therefore, bath water cleaners containing these inorganic peroxides are not used in powder form, but are used in the form of tablets for each use. This is not only convenient, but also improves stability. Furthermore, if each of these tablets is packaged in an aluminum/polyethylene laminate, moisture absorption from the outside can be prevented. However, stability may still be impaired depending on the humidity conditions during production. In addition, when mass-producing in a factory, pinholes that cannot be detected with the naked eye inevitably occur, resulting in moisture absorption and decomposition during storage after reaching consumers. [Means for Solving the Problems] Under these circumstances, the present inventor has conducted extensive research to overcome the above-mentioned drawbacks of conventional bath water cleaners containing inorganic peroxides, and has developed an inorganic peroxide solution. By blending the oxide with benzoate, a decrease in available oxygen due to moisture absorption is significantly prevented, and this benzoate has an extremely excellent lubricating effect during tableting, making continuous high-speed tableting possible. They discovered that this is the case and completed the present invention. That is, the present invention provides a bath water cleaner containing an inorganic peroxide and a benzoate. Examples of the inorganic peroxide used in the present invention include sodium percarbonate, sodium perborate, potassium monopersulfate double salt, and sodium sulfate-sodium chloride-hydrogen peroxide adduct. Among these, potassium monopersulfate double salt is preferred. The benzoate used in the present invention includes sodium,
Alkali metal salts such as potassium salts, monovalent salts such as ammonium salts are preferred, and among these, sodium salts are most suitable. In the present invention, the blending ratio of inorganic peroxide and benzoate is preferably in the range of 97/3 to 75/25 in terms of weight ratio; if it is less than this, the effect is insufficient; No improvement in the effects above was observed. The bath water cleaner of the present invention can be prepared by simply mixing an inorganic peroxide and a benzoate.
Although there are no particular restrictions on the manufacturing method, it is preferable to use particles having a particle size of 95% or more that passes through a 16-mesh sieve. The bath water cleaner of the present invention further includes, if necessary,
Inorganic salts as diluents such as sodium sulfate, sodium bicarbonate, sodium carbonate, sodium tropolyphosphate, sodium pyrophosphate, monosodium phosphate, disodium phosphate, trisodium phosphate, citric acid, oxalic acid, tartaric acid, succinic acid. Organic acids such as acids or their sodium salts, sodium nitrilotriacetate, sodium ethylenediaminetetraacetate, polyethylene glycol (molecular weight 2000~
20000), carboxymethyl cellulose sodium salt, hydroxyethyl cellulose, sodium alkylbenzene sulfonate, sodium alkyl sulfate, sodium alkyl sulfonate, organic acid salts such as polyethylene glycol alkyl ether, polyethylene glycol alkyl phenol ether, polymer compounds, metal chelating agents, negative Ionic surfactants, nonionic surfactants, etc., as well as perfumes, pigments, dyes, etc., conventional ingredients for making products for bath water cleaner applications can be added. The bath water cleaner of the present invention can be made into various dosage forms such as powder and tablets, but tablets are particularly preferred. When used as tablets, binders such as hydroxypropyl cellulose, carboxymethyl cellulose, sorbitol, sodium polyacrylate, and corn starch; excipients such as mirabilite and common salt; blowing agents such as sodium bicarbonate, disintegrants, etc. are added. can do. In addition, the amount of benzoate to be blended in the case of tablets may be within the above range, but when obtaining tablets with relatively high hardness,
It is preferably 3% (w/w), or 5% (w/w) or more of the total composition when obtaining a product with low hardness. Tablet compression can be performed by any method known per se,
In the case of the bath water cleaner of the present invention, conventionally it was possible to compress tablets only at low speed using a single-shot tablet machine,
It is possible to press more than 400 tablets per minute using a rotary tablet press. [Operation] The mechanism by which the present invention exerts its effects has not yet been completely elucidated. [Effects of the Invention] The bath water cleanser of the present invention has excellent storage stability with little decrease in effective oxygen due to moisture absorption, and can be compressed continuously at high speed without adhesion to the kinematics or capping during tableting. It can be advantageously formulated. [Example] Next, an example will be given and explained. Example 1 3 g of each of the compositions shown in Table 1 was compressed into tablets, sealed in an aluminum pillow package, and then heated at 50°C, 40°C,
The package was stored at 20°C for 3 months, and the packaging was observed for blistering. Table 1 shows the evaluation results for tableting properties and blistering.

【table】

[Table] Example 2 Among the compositions shown in Table-1, 3 g each of B, C, D, and E were compressed into tablets, sealed in aluminum pillow packaging, and stored at 40°C for 1 month and 3 months. Afterwards, the tablets were taken out, the packaging was broken, and the amount of effective oxygen in the tablets was measured. The results are shown in Table-2.

【represent.
Example 3 3 g of each of the compositions shown in Table 3 was placed in aluminum pyropackaging, and the amount of effective oxygen in the tablets was measured in the same manner as in Example 2. The results are shown in Table 4.

【table】

[Table] Example 4 The compositions shown in Table 5 were formulated by a direct tableting method, and their tabletability was examined.

[Table] When each sample was compressed using a rotary tablet machine, Compositions I, J, and K showed good tableting properties without adhesion to the core or capping, and they were continuously compressed at a rate of 500 tablets per minute. Compositions G-3 and H could be compressed for 1 hour, but Compositions G-3 and H had a large frictional resistance, caused the tablet machine to squeak, and adhered to the kinematics, making it impossible to compress the tablets. .

Claims (1)

[Claims] 1. Bath water purifier containing inorganic peroxide and benzoate.