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Tablets for the preparation of solutions of chlorine dioxide

A technology for tablets and disintegrants, applied in the field of tablets of chlorine dioxide aqueous solution, can solve the problems of inability to handle, have no effective effect, low tablet hardness, etc., and achieves suppression of breakage, excellent physical strength, and good productivity. Effect

Active Publication Date: 2017-11-21
OSAKA SODA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chlorine dioxide, which has such useful uses, has various problems in practical use
[0003] Chlorine dioxide is explosive, toxic, and decomposing to light and heat in a gaseous state, so it cannot be directly transported in a gaseous state
However, the amount of chlorine dioxide produced in the previously proposed tablet is very small and does not have an effective effect, or the price is high because it is manufactured after making granules
In addition, there are problems such as low tablet hardness and brokenness during transportation.

Method used

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  • Tablets for the preparation of solutions of chlorine dioxide
  • Tablets for the preparation of solutions of chlorine dioxide
  • Tablets for the preparation of solutions of chlorine dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1 (tablet forming)

[0088] The components of the composition shown below were previously dried at 70° C. for 1 hour, and then the components were mixed. 7 g of the mixed components were put into a mold with a diameter of 20 mm, and tablet molding was performed using a continuous tablet press manufactured by Kikusui Seisakusho Co., Ltd. so that the tablet hardness became 30 kg.

[0089] Composition of the tablet

[0090]

[0091] 1000 tablets of the above-mentioned composition were produced, and the tabletability, ease of breaking as a tablet, and solubility were measured, and the average value or average evaluation was obtained. The results are shown in Table 1.

[0092] (Evaluation method)

[0093] Tabletability

[0094] The tableting property was evaluated by the degree of sticking, and the case of no sticking was regarded as ◯, the case of slight sticking was regarded as △, and the case of immediate adhesion was regarded as ×.

[0095] Stick...

Embodiment 2～5 and comparative example 1～3

[0135] Using the composition shown in Table 3, it carried out similarly to Example 1, and produced the tablet of Examples 2-5 and Comparative Examples 1-3.

[0136] table 3

[0137]

[0138] The tabletability of the obtained tablet, the easiness of tablet breaking, and the solubility were evaluated in the same manner as in Example 1. The results are shown in Table 4. The results of Example 1 are also supplemented in Table 4.

[0139] Table 4

[0140]

[0141] As can be seen from the results in Table 4, tablets containing both magnesium stearate and a polymer disintegrant have good tabletability, have moderate hardness as a tablet, and have a short dissolution time, so they are easy to dissolve. It can be used to prepare chlorine dioxide solution of any concentration well.

Embodiment 6～10

[0143] Tablets of Examples 6 to 9 were produced in the same manner as in Example 1 using the compositions shown in Table 5.

[0144] table 5

[0145]

[0146] The tabletability of the obtained tablet, the easiness of tablet breaking, and the solubility were evaluated in the same manner as in Example 1. In addition, the chlorine dioxide concentration, the chlorite ion concentration, and the residual chloride ion concentration of the dissolved chlorine dioxide aqueous solution were measured by iodometric titration. The results are shown in Table 6.

[0147] Table 6

[0148]

[0149] As shown in Table 6, the tablets of Examples 6 to 9 produced solutions having chlorine dioxide concentration at the same level as that of the tablet of Example 1. In addition, residual chlorite ions and chloride ions were hardly detected in any of the tablets. From these results, it was found that the tablet for preparing a chlorine dioxide solution of the present invention is easy to manuf...

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Abstract

A tablet containing metal chlorite, a chlorine-releasing compound that releases chlorine when in contact with water, a solid acid source, a stearic acid metal salt, and a polymer-based disintegrating agent, and a stearic acid metal salt and a polymer-based disintegrant The total amount of the decomposing agent is 0.3 to 10% by weight relative to the whole tablet. Regardless of the scale of the facility to be treated, this tablet can generate chlorine dioxide at a sufficient concentration within a practical time, and has the advantages of being transported. Sufficient strength that does not cause breakage during handling, packaging, etc., and high productivity.

Description

technical field [0001] The present invention relates to safe and simple preparation of an aqueous solution of chlorine dioxide used in various applications such as the removal of bacteria, viruses, malodorous substances, mold, and algae, the removal of unpleasant odors in water, and the removal of divalent metal ions in water tablet. Background technique [0002] Chlorine dioxide is used as a powerful oxidizing agent in a wide range of applications, such as bleaching, sterilization, virus inactivation, algae killing, iron removal, manganese removal, and odor removal from water. However, chlorine dioxide having such a useful use has various problems in practical use. [0003] Chlorine dioxide is explosive, toxic, and decomposable to light and heat in a gaseous state, so it cannot be directly transported in a gaseous state. In addition, even in the state of a chlorine dioxide solution having relatively higher stability than gas, it is difficult to maintain the concentration ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B11/02A01N25/34A01N59/00A01N59/08A01P1/00A01P3/00A61K9/20A61K47/02A61K47/12A61K47/32C02F1/50C02F1/76
CPCA01N43/64A01N59/00A61P31/04A61P31/12C01B11/024C02F1/76C02F2305/14A01N25/34
Inventor 加藤谅近田安史植田秀昭小田实生
Owner OSAKA SODA CO LTD
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