CN113197219A - Stable-state chlorine dioxide gel composition and preparation method thereof - Google Patents
Stable-state chlorine dioxide gel composition and preparation method thereof Download PDFInfo
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- CN113197219A CN113197219A CN202110444727.9A CN202110444727A CN113197219A CN 113197219 A CN113197219 A CN 113197219A CN 202110444727 A CN202110444727 A CN 202110444727A CN 113197219 A CN113197219 A CN 113197219A
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
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Abstract
The application relates to the field of disinfectants and particularly discloses a stable chlorine dioxide gel composition and a preparation method thereof. A stable chlorine dioxide gel composition comprises the following components in parts by mass (3-5): 1, characterized in that the component A comprises the following components in parts by weight: 10-15 parts of sodium chlorite; 2-4 parts of a stabilizer; 3-5 parts of a cross-linking agent; 3-5 parts of an adsorbent; 65-75 parts of water; the component B comprises the following components in parts by weight: and 23-26 parts of an activating agent. The stable chlorine dioxide gel composition can adjust humidity and delay the release rate of chlorine dioxide through the mutual matching of the adsorbent and the stabilizer, and further can achieve the lasting sterilization and disinfection effect.
Description
Technical Field
The application relates to the field of disinfectants, in particular to a stable chlorine dioxide gel composition and a preparation method thereof.
Background
Chlorine dioxide is a latest generation of high-efficiency, broad-spectrum and safe sterilization and fresh-keeping agent internationally acknowledged at present, is an ideal substitute of a chlorine preparation, and is widely applied to disinfection, mould prevention, food preservation and fresh keeping and the like in foods, food processing, pharmacy, hospitals, public environments and the like.
The current disinfectants used in the market are the following:
1. the sodium hypochlorite disinfectant has low concentration of formed hypochlorous acid, heavy chlorine smell, continuous reaction with carbon dioxide in the air, short duration of disinfection and sterilization and certain difficulty in transportation and storage;
2. the pure adsorption type chlorine dioxide disinfectant and bactericide always has a certain balance relationship between adsorption and desorption, so that chlorine dioxide gas is released when the product is not sold after being prepared, the transportation and the storage are not facilitated, and the service life is short.
In view of the above-mentioned related arts, the inventors believe that chlorine dioxide sanitizer has poor storage stability and releases chlorine dioxide faster, resulting in its long-lasting sterilizing effect.
Disclosure of Invention
In order to improve the lasting sterilization and disinfection effect of the chlorine dioxide sterilization and disinfection agent, the application provides a stable chlorine dioxide gel composition and a preparation method thereof.
In a first aspect, the present application provides a stable chlorine dioxide gel composition, which adopts the following technical scheme: a stable chlorine dioxide gel composition comprises the following components in parts by mass (3-5): 1, characterized in that the component A comprises the following components in parts by weight:
10-15 parts of sodium chlorite;
2-4 parts of a stabilizer;
3-5 parts of a cross-linking agent;
3-5 parts of an adsorbent;
65-75 parts of water;
the component B comprises the following components in parts by weight:
and 23-26 parts of an activating agent.
By adopting the technical scheme, the component A and the component B are separately stored and are mixed when in use, so that the stable chlorine dioxide gel composition has good application stability, is beneficial to storage and has good transportation safety. When the composition is used, the component A and the component B are mixed, chlorine dioxide can be stably and slowly generated under the action of an activating agent, raw materials of the components in the stable chlorine dioxide gel composition are matched, and through mutual matching of the adsorbent and the stabilizing agent, humidity can be adjusted, the generation and release rate of the chlorine dioxide is delayed, and further, the durable sterilization and disinfection effects can be achieved.
Preferably, the component A further comprises a functional assistant, the functional assistant is 2-4 parts by weight, the functional assistant is composed of starch stearate and medical stone powder, and the weight ratio of the starch stearate to the medical stone powder is 1: (1.6-2.2).
By adopting the technical scheme, the medical stone powder has a developed pore structure and strong adsorbability, can adsorb moisture in a system, keeps a certain dry state of the system, and can adsorb a certain amount of chlorine dioxide, thereby controlling the release rate of the chlorine dioxide. The stearic acid starch ester has good emulsification stability and can improve the stability of chlorine dioxide release. Meanwhile, when the starch stearate and the medical stone powder are mixed to form the functional assistant, part of the starch stearate can be filled in the pore structure of the medical stone powder, so that the release amount of chlorine dioxide in unit time can be further reduced, the release speed of the chlorine dioxide can be stabilized, the problems of high early release rate and low later release rate are avoided, and the stable chlorine dioxide gel composition can be better in lasting sterilization and disinfection effects when applied.
Preferably, the functional assistant further comprises polyvinyl alcohol, and the weight ratio of the starch stearate, the medical stone powder and the polyvinyl alcohol is 1: (1.6-2.2): (0.6-1.2).
By adopting the technical scheme, the polyvinyl alcohol is a good adhesive, and when the polyvinyl alcohol is mixed with the starch stearate and the medical stone powder to form the functional auxiliary agent, the starch stearate can favorably modify the pore structure of the medical stone powder well in the application process of the product, so that the lasting sterilization and disinfection effects of the stable chlorine dioxide gel composition can be improved. Meanwhile, the polyvinyl alcohol can also enable the combination of all components to be more stable, and is beneficial to improving the safety in the storage and transportation processes.
Preferably, the stabilizer is one or a combination of magnesium sulfate, sodium sulfate and calcium chloride.
Through adopting above-mentioned technical scheme, magnesium sulfate, sodium sulfate and calcium chloride are good stabilizer, can play good earlier stage and absorb water the effect, adjust the humidity of mixed system to lock moisture, thereby make the system be in dry state and make chlorine dioxide's release process more gentle.
Preferably, the cross-linking agent is one or a combination of polyethylene glycol, konjac glucomannan, sodium carboxymethylcellulose and sodium polyacrylate.
By adopting the technical scheme, the cross-linking agent is beneficial to fully combining the raw materials of all the components, and a stable mixed system can be formed, so that the stable chlorine dioxide gel composition can uniformly and stably release chlorine dioxide during application, and the durable sterilization and disinfection effect is excellent.
Preferably, the adsorbent is one or a combination of montmorillonite, nano silica gel, titanium dioxide and aluminum hydroxide.
By adopting the technical scheme, the adsorbent has a large specific surface, a proper pore structure and a surface structure, is beneficial to fully combining raw materials of all components, and effectively ensures the uniform stability of releasing chlorine dioxide.
Preferably, the activating agent is one or a combination of more of palmitic acid, malic acid, tartaric acid and citric acid.
By adopting the technical scheme, the activating agent can act with sodium chlorite, has stable activating efficiency, and can uniformly and stably generate chlorine dioxide.
In a second aspect, the present application provides a method for preparing a stable chlorine dioxide gel composition, which adopts the following technical scheme:
a method for preparing a stable chlorine dioxide gel composition, comprising the steps of:
(1) preparing raw materials containing sodium chlorite, a stabilizer, a cross-linking agent, an adsorbent, water and an activating agent according to a ratio;
(2) uniformly mixing the sodium chlorite, the stabilizer and the cross-linking agent in the step (1), adding water, stirring and heating, and dissolving and uniformly mixing to obtain a Chinese patent liquid;
(3) adding an adsorbent into the Chinese patent liquid obtained in the step (2), uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain a component A, and storing for later use;
(4) and (3) carrying out vacuum packaging on the activating agent in the step (1) to obtain a component B, and storing for later use.
By adopting the technical scheme, the preparation process obtains the gel substance of the component A, so that the storage and transportation safety of the stable chlorine dioxide gel composition is greatly improved, the preparation process is simple to operate, the component A and the component B are separately stored and are mixed when in use, a good and lasting sterilization and disinfection effect can be still ensured, and meanwhile, the preparation method is high in production efficiency and has good applicability as a whole.
In summary, the present application has the following beneficial effects:
1. under the action of the activating agent and through the mutual matching of the adsorbent and the stabilizing agent, the humidity of the system can be adjusted, the release rate of the chlorine dioxide is delayed, and the long-lasting sterilization and disinfection effect can be achieved;
2. when the functional assistant is preferably prepared by mixing starch stearate with medical stone powder, part of the starch stearate is filled in the pore structure of the medical stone powder, so that the release amount of chlorine dioxide in unit time is further reduced, the release speed of the chlorine dioxide can be stabilized, and the durable sterilization and disinfection effect of the stable chlorine dioxide gel composition in application is better;
3. the polyvinyl alcohol is a good adhesive, and starch stearate can play a good role in modifying the pore structure of the medical stone powder, so that the lasting sterilization and disinfection effects of the stable chlorine dioxide gel composition can be improved.
Detailed Description
The present application will be described in further detail with reference to examples.
Examples of preparation of raw materials and/or intermediates
Preparation example 1
Weighing starch stearate and medical stone powder, stirring and mixing uniformly, wherein the weight ratio of the starch stearate to the medical stone powder of 200 meshes is 1: 1.9, obtaining the functional additive.
Preparation example 2
Weighing starch stearate and medical stone powder, stirring and mixing uniformly, wherein the weight ratio of the starch stearate to the medical stone powder of 200 meshes is 1: 1.6, obtaining the functional additive.
Preparation example 3
Weighing starch stearate and medical stone powder, stirring and mixing uniformly, wherein the weight ratio of the starch stearate to the medical stone powder of 200 meshes is 1: 2.2, obtaining the functional additive.
Preparation example 4
Weighing starch stearate, medical stone powder of 200 meshes and polyvinyl alcohol, stirring and mixing uniformly, wherein the weight ratio of the starch stearate to the medical stone powder to the polyvinyl alcohol is 1: 1.9: 0.9, obtaining the functional additive.
Preparation example 5
Weighing starch stearate, medical stone powder of 200 meshes and polyvinyl alcohol, stirring and mixing uniformly, wherein the weight ratio of the starch stearate to the medical stone powder to the polyvinyl alcohol is 1: 1.6: 1.2, obtaining the functional additive.
Preparation example 6
Weighing starch stearate, medical stone powder of 200 meshes and polyvinyl alcohol, stirring and mixing uniformly, wherein the weight ratio of the starch stearate to the medical stone powder to the polyvinyl alcohol is 1: 2.2: 0.6, obtaining the functional additive.
Examples
Example 1
A stable chlorine dioxide gel composition comprises the following components in percentage by mass when being stored separately and used: 1, the components and the corresponding parts by weight thereof are shown in table 1 and are prepared by the following steps:
(1) preparing raw materials containing sodium chlorite, a stabilizer, a cross-linking agent, an adsorbent, water and an activating agent according to a ratio;
(2) uniformly mixing the sodium chlorite, the stabilizer and the cross-linking agent in the step (1), adding water, stirring and heating at the stirring temperature of 50 ℃, the stirring speed of 150rpm for 20min, and dissolving and uniformly mixing to obtain a Chinese patent liquid;
(3) adding an adsorbent into the Chinese patent liquid obtained in the step (2), continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, and performing vacuum packaging to obtain a component A which is stored for later use;
(4) and (3) carrying out vacuum packaging on the activating agent in the step (1) to obtain a component B, and storing for later use.
Note: the stabilizer in the above step is magnesium sulfate; the cross-linking agent is polyethylene glycol, and the degree of polymerization is 500; the adsorbent is montmorillonite; the activator is palmitic acid.
Examples 2 to 5
A stable chlorine dioxide gel composition, different from example 1 in that the components and their respective parts by weight are shown in table 1.
TABLE 1 Components and parts by weight of examples 1-5
Example 6
A stable chlorine dioxide gel composition, which is different from that of example 1 in that it comprises, stored separately and used in a mass ratio of 3: 1 ratio of the A component and the B component.
Example 7
A stable chlorine dioxide gel composition, which is different from that of example 1 in that it comprises, stored separately and used in a mass ratio of 5: 1 ratio of the A component and the B component.
Example 8
A stable chlorine dioxide gel composition, which is different from the composition of example 1 in that the stabilizer used in the above step is sodium sulfate.
Example 9
A stable chlorine dioxide gel composition, which is different from that in example 1 in that the stabilizing agent in the above step is calcium chloride.
Example 10
A stable chlorine dioxide gel composition is different from that in the embodiment 1, the crosslinking agent in the step is konjac glucomannan.
Example 11
A stable chlorine dioxide gel composition is different from that in the embodiment 1, the cross-linking agent in the above steps is selected to be sodium polyacrylate.
Example 12
A stable chlorine dioxide gel composition, which is different from the composition in example 1 in that the adsorbent in the above step is selected from nano silica gel.
Example 13
A stable chlorine dioxide gel composition, which is different from that in example 1 in that the adsorbent in the above step is aluminum hydroxide.
Example 14
A stable chlorine dioxide gel composition, which is different from the composition in example 1 in that the activating agent in the above step is malic acid.
Example 15
A stable chlorine dioxide gel composition, which is different from the composition of example 1 in that tartaric acid is selected as the activating agent in the above step.
Example 16
A stable chlorine dioxide gel composition, which is different from the chlorine dioxide gel composition of example 1 in that the step (3) is specifically configured as follows: adding an adsorbent and 2 parts of a functional aid into the Chinese patent liquid obtained in the step (2), wherein the functional aid is selected from the preparation example 1, continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain the component A, and storing for later use.
Example 17
A stable chlorine dioxide gel composition, which is different from the chlorine dioxide gel composition of example 1 in that the step (3) is specifically configured as follows: adding an adsorbent and 3 parts of a functional aid into the Chinese patent liquid obtained in the step (2), wherein the functional aid is selected as the preparation example 2, continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain the component A, and storing for later use.
Example 18
A stable chlorine dioxide gel composition, which is different from the chlorine dioxide gel composition of example 1 in that the step (3) is specifically configured as follows: adding an adsorbent and 4 parts of a functional aid into the Chinese patent liquid obtained in the step (2), wherein the functional aid is selected from preparation example 3, continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain a component A, and storing for later use.
Example 19
A stable chlorine dioxide gel composition, which is different from the chlorine dioxide gel composition of example 1 in that the step (3) is specifically configured as follows: adding an adsorbent and 3 parts of a functional aid into the Chinese patent liquid obtained in the step (2), wherein the functional aid is selected from preparation example 4, continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain a component A, and storing for later use.
Example 20
A stable chlorine dioxide gel composition, which is different from the chlorine dioxide gel composition of example 1 in that the step (3) is specifically configured as follows: adding an adsorbent and 3 parts of a functional aid into the Chinese patent liquid obtained in the step (2), wherein the functional aid is selected as preparation example 5, continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain a component A, and storing for later use.
Example 21
A stable chlorine dioxide gel composition, which is different from the chlorine dioxide gel composition of example 1 in that the step (3) is specifically configured as follows: adding an adsorbent and 3 parts of a functional aid into the Chinese patent liquid obtained in the step (2), wherein the functional aid is selected from preparation example 6, continuously stirring for 5min, uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain a component A, and storing for later use.
Comparative example
Comparative example 1
A stable chlorine dioxide gel composition which differs from that of example 1 in that component a does not contain a stabilizing agent.
Comparative example 2
A stable chlorine dioxide gel composition differing from that of example 1 in that the a component does not contain an adsorbent.
Comparative example 3
A stable chlorine dioxide gel composition which differs from that of example 1 in that component a does not contain a stabilizer or an adsorbent.
Comparative example 4
A stable chlorine dioxide gel composition, which is different from that of example 16 in that starch stearate is not contained in the functional agent.
Comparative example 5
A stable chlorine dioxide gel composition, which is different from that of example 16 in that medical stone powder is not contained in the functional assistant.
Comparative example 6
A stable chlorine dioxide gel composition, which is different from that of example 19 in that medical stone powder is not contained in the functional assistant.
Comparative example 7
A stable chlorine dioxide gel composition, which is different from that of example 19 in that starch stearate is not contained in the functional agent.
Performance test
Test samples: the stabilized chlorine dioxide gel compositions obtained in examples 1 to 21 were used as test samples 1 to 21, and the stabilized chlorine dioxide gel compositions obtained in comparative examples 1 to 7 were used as control samples 1 to 7.
The test method comprises the following steps: the sample was suspended in a beaker containing potassium iodide absorption solution, sealed in a desiccator with a certain humidity, and placed in the dark. At regular intervals, 5mL of potassium iodide absorbent was aspirated and titrated with sodium thiosulfate by iodometry (HG/T2777-1996). And (3) discharging air for 15min after each titration, adding new potassium iodide solution again, carrying out the next absorption, respectively measuring the amount of sodium thiosulfate consumed by 24h titration, thus calculating the release rate (mg/h) of chlorine dioxide, continuously detecting, and measuring the continuous release time (h).
And (3) test results: the comparison of the test results of the test sample 1 and the test samples 16-18 shows that the addition of the functional auxiliary can improve the release rate and the sustained release duration of the chlorine dioxide, because the functional auxiliary reduces the early burst release to a certain extent, and further improves the lasting sterilization and disinfection effect. The test results of test sample 19 and test samples 19-21 show that the addition of polyvinyl alcohol to the functional aid can further improve the overall quality of the stable chlorine dioxide gel composition. The test results of the test sample 1 and the control samples 1-3 can obtain the compounding effect between the stabilizer and the adsorbent, and the overall quality of the stable chlorine dioxide gel composition can be ensured. The test results of the test sample 16 and the control samples 4-5 show that the starch stearate and the medical stone powder in the functional additive can have good compounding and synergism, and the effect is not good when the starch stearate or the medical stone powder is singly used as the functional additive. The comparison of the test results of the test sample 19 and the comparison samples 6 to 7 shows that the functional aid composed of starch stearate and polyvinyl alcohol, or the functional aid composed of medical stone powder and polyvinyl alcohol, has no excellent effect brought by using polyvinyl alcohol, starch stearate and medical stone powder as the functional aid.
TABLE 2 test results of test samples 1-21 and control samples 1-7
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. A stable chlorine dioxide gel composition is characterized by comprising the following components in parts by mass (3-5): 1, characterized in that the component A comprises the following components in parts by weight:
10-15 parts of sodium chlorite;
2-4 parts of a stabilizer;
3-5 parts of a cross-linking agent;
3-5 parts of an adsorbent;
65-75 parts of water;
the component B comprises the following components in parts by weight:
and 23-26 parts of an activating agent.
2. A stable chlorine dioxide gel composition as claimed in claim 1, characterized in that: the component A also comprises a functional auxiliary agent, wherein the functional auxiliary agent is 2-4 parts by weight, the functional auxiliary agent is composed of starch stearate and medical stone powder, and the weight ratio of the starch stearate to the medical stone powder is 1: (1.6-2.2).
3. A stable chlorine dioxide gel composition as claimed in claim 2, wherein: the functional auxiliary agent also comprises polyvinyl alcohol, and the weight ratio of the starch stearate to the medical stone powder to the polyvinyl alcohol is 1: (1.6-2.2): (0.6-1.2).
4. A stable chlorine dioxide gel composition as claimed in claim 1, characterized in that: the stabilizer is one or a combination of magnesium sulfate, sodium sulfate and calcium chloride.
5. A stable chlorine dioxide gel composition as claimed in claim 1, characterized in that: the cross-linking agent is one or a combination of polyethylene glycol, konjac glucomannan, sodium carboxymethylcellulose and sodium polyacrylate.
6. A stable chlorine dioxide gel composition as claimed in claim 1, characterized in that: the adsorbent is one or a combination of more of montmorillonite, nano silica gel, titanium dioxide and aluminum hydroxide.
7. A stable chlorine dioxide gel composition as claimed in claim 1, characterized in that: the activating agent is one or a combination of more of palmitic acid, malic acid, tartaric acid and citric acid.
8. A method of preparing a stable chlorine dioxide gel composition as claimed in any one of claims 1 to 7, comprising the steps of:
(1) preparing raw materials containing sodium chlorite, a stabilizer, a cross-linking agent, an adsorbent, water and an activating agent according to a ratio;
(2) uniformly mixing the sodium chlorite, the stabilizer and the cross-linking agent in the step (1), adding water, stirring and heating, and dissolving and uniformly mixing to obtain a Chinese patent liquid;
(3) adding an adsorbent into the Chinese patent liquid obtained in the step (2), uniformly stirring and mixing, naturally cooling to obtain a gelatinous substance, vacuum packaging to obtain a component A, and storing for later use;
(4) and (3) carrying out vacuum packaging on the activating agent in the step (1) to obtain a component B, and storing for later use.
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