Solid chlorine dioxide sustained-release agent

Abstract

The invention discloses a solid chlorine dioxide sustained-release agent, and relates to the technical field of daily chemical products. The solid chlorine dioxide sustained-release agent comprises achlorite-containing substance, a super absorbent carrier, an alkali and water, wherein the solid chlorine dioxide sustained-release agent is alkaline; the chlorite accounts for 1%-20% of the total system in percentage by mass; wherein the molar amount ofOH-dissociable by the alkali is 0.0001-0.1 of the amount of substance of chlorite; wherein the initial water content is 20%-90% of the moisture absorption capacity of the super absorbent carrier under the condition of 25 DEG C and 20% RH. The invention provides the solid chlorine dioxide sustained-release agent. The initial water content and the pH value range of the solid chlorine dioxide sustained-release agent are controlled by selecting a proper high-water-absorptivity carrier; the concentration balance of chlorine dioxide in the package in the storage period is realized, the package in the storage period is prevented from being corroded, effective substances are not greatly lost, chlorine dioxide can be quickly released during use,the package can quickly enter a stable release state, and the technical effect that the induction period is close to zero is realized.

Description

technical field [0001] The invention relates to the technical field of daily products, in particular to a solid chlorine dioxide slow-release agent. Background technique [0002] Chlorine Dioxide Molecular Formula ClO 2 , the standard oxidation state of the chlorine atom is +4, and it is one of the few compounds that exist almost entirely as monomeric free atom groups in nature. ClO 2 It is a yellow to orange-red gas at room temperature, and has an irritating gas similar to chlorine. Chlorine dioxide is the fourth-generation chlorine-containing disinfectant after chlorine gas, sodium hypochlorite, calcium hypochlorite, sodium dichloroisocyanurate, and trichloroisocyanuric acid. [0003] Chlorine dioxide can penetrate into bacterial cells, oxidize nucleic acid (RNA or DNA), prevent bacteria from anabolism and cause them to die; it can also adsorb and pass through virus capsid proteins, damage RNA genome, and prevent virus replication and reproduction. achieve a killing ef...

AI Technical Summary

Problems solved by technology

[0005] However, ClO 2 Active chemical properties, easy to decompose by heat or light, and even explosive when in contact with combustibles under high concentration conditions

So far, all attempts to compress or store chlorine dioxide, either alone or mixed with other gases, have been commercially unsuccessful

Chlorine dioxide solution (concentration generally ≤ 2000mg / L) must be stored in the dark, sealed and low temperature conditions to be stable, which is difficult to achieve in actual use.

Existing solid chlorine dioxide slow-release agents generally contain chlorite and acid, which are activated under acidic conditions to generate chlorine dioxide, such as CN200780005471.X, CN201810400606.2, CN201910676715.1. High, the utilization rate of chlorite is high, but its disadvantage is that once the release reaction starts, it will be difficult to stop or balance. In order to solve the zero release during the storage period and the fast release during use, either the induction period is long, or it will be released during the storage period. Decomposition causes continuous loss of effective materials and packaging corrosion problems, and it is difficult to strike a balance between the two

[0011] In order to shorten the induction period, the initial moisture content is sometimes controlled within a narrow range, that is, near the critical point of the induction period, but even here, due to exposure during production and packaging, moisture fluctuations in solid raw materials, and actual storage It is difficult to precisely control the temperature and humidity changes, which will inevitably lead to either a long induction period, or the continuous production of chlorine dioxide during the storage period, resulting in loss of effective substances and packaging corrosion

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