Aerosol disinfectant "vilag-2"


(57) Abstract:

Means for disinfection of air, surfaces, furniture, equipment and premises medical and health care institutions contains as an organic polymer binder is a copolymer of vinylpyrrolidone with vinyl acetate content of the first component 30 wt.% (resin SWAP-3), bactericidal additive 2-methyl-5-di(trifluoromethyl) oxymethylene (vilain), propellant, for example (Halocarbon 12) or a mixture of 12 and halon halon 11 in the ratio of 1 : 1 or liquefied hydrocarbon gas is purified. The tool has a high disinfectant properties (% disinfection - 100), does not reduce the activity for a long time. 1 C.p. f-crystals, 5 PL.

The invention relates to sanitation and relates to aerosol disinfectants may be used for disinfection of air, surfaces, furniture, equipment and premises medical and health care institutions.

Known aerosol disinfectants: an aqueous solution of hydrogen peroxide and formaldehyde ("Disinfection aerosols" p. P. Lerski, C. M. Tsetlin.- M.: Medicine, 1981, S. 130-135). However, they have drawbacks. The peroxide bleached obratimaya activity against spore-forming and acid-resistant forms of microorganisms.

Known disinfectant "Vilain" (Patent of Russian Federation N 1522498, A 61 L 2/16 from 09.03.94 year).

The disadvantage of this tool is malorastvorima it in the water. Therefore, in practice, it found use as a disinfectant. In addition, it is not disinfects the air and light during long-term storage (more than three months) is oxidized, reducing their activity.

The closest in technical essence is a composition for aerosol spray comprising a polymeric organic substance - acetylcellulose and polyvinyl butyral or metropolitenu resin, monatomic limit alcohol is ethyl or isopropyl, antifoam higher alcohol, an organic acid is acetic acid, the propellant - fluorocarbons or a mixture of propane-butane (1:4), and optionally phosphoric or nitric acid.

This composition is used for the decontamination of surfaces contaminated and - active radionuclides.with. N 967067, C 09 K 3/30, 23.01.93 year).

The disadvantage of the prototype is the lack of disinfectant action, because no part of the active-acting bactericidal additives.

The objective of the invention is the creation of aerosol hazardous composition with a high disinfectant is more time.

This task is solved in that the spray means comprising an organic polymer substance, ethanol and the propellant as the polymeric organic substance contains a copolymer of vinylpyrrolidone with vinyl acetate content of the first component 30 wt.% (resin SWAP-3) and an additional bactericidal additive - 2-methyl-5-di(trifluoromethyl)oxymethylene (vilain) in the following ratio, wt.%:

Vilain - 4,0-5,0

Resin SWAP-3 - 0,25-1,5

Propellant - 20-50

Ethyl alcohol - the Rest.

In paragraph 2 of the claims indicates that the tool as a propellant contains (DICHLORODIFLUOROMETHANE) (Halocarbon 12) or a mixture of Halocarbon 12 and trichloromethane(halon 11) in the ratio of 1: 1 or liquefied hydrocarbon gas cleared.

In table. 1 shows examples of formulations of aerosol disinfectant.

Examples: source, 1, 5, and 6 are outside the claimed range of values of the components. Examples: 2, 3, 4 lie in the claimed values of components.

As bactericidal additives to create a high disinfecting effect in the tool entered vilain in the amount of 4.0 to 5.0%, with a pronounced inhibitory effect on shirou 4.0 wt.% does not provide specified bactericidal action. Introduction vilayna above the upper limit of 5.0 wt. % does not lead to increased bactericidal action and is economically unjustified.

As polymeric organic substances introduced resin SWAP-3 (50% alcoholic solution) 0.25 to 1.5 wt.%, consisting of a copolymer of vinyl acetate with vinylpyrrolidone. Designed for fixing vilayna on the treated surface and prevent rapid evaporation.

Introduction resin SWAP-3 less than 0.25 wt.% leads to reduction of the disinfecting effect and increase the ratio of processing to achieve the same result.

Introduction resin SWAP-3 more than 1.5 wt.% does not increase the disinfecting action, leads to the creation on the film surface.

As the propellant used: refrigerant 12 (fluorocarbons), or a mixture of freon 12 and 11 (Trichlorofluoromethane) in a mass ratio of 1:1, grade a or liquefied hydrocarbon gas cleared, which is a mixture of propane, butane and isobutane in a certain ratio grades B and C.

The introduction of the propellant is less than 20 wt.% causes atomized spraying of funds, insufficient disinfects the air, leads to excessive funds. The introduction of PR is an aerosol container by increasing the dose of inert propellant.

Ethyl alcohol in the tool acts as a solvent vilayna and resin SWAP-3, at the same time enhances the disinfecting action viagina. The amount of ethanol is determined by the number of other components in the specified range of values.

Example 1 preparation of aerosol disinfectant "Vilag-2".

At room temperature the resin SWAP-3 add ethanol, stirred until a homogeneous solution. Then enter vilain and stirred until complete averaging of the mixture. With the help of dosing or measuring Cup the calculated dose of the mixture is poured into a metal aerosol container, sealcoat on the neck valve with siphon tube. Then in the aerosol container through the dispenser injected propellant, then set the spray head and wears a cap.

Examples 2 to 6 are prepared analogously to example 1. The number of components in the composition shown in table. 1.

In the patent and scientific literature by the applicant is not detected aerosol tool which includes vilain, resin SWAP-3, propellant (Halocarbon 12, a mixture of freon 12 and 11 (1:1) and liquefied hydrocarbon gas purged), ethyl alcohol and to the and have an "inventive step".

Components disinfectant aerosol funds are available and cheap substances produced by the domestic industry, therefore the proposed composition is "industrially applicable".

The study disinfectant properties of the drug was carried out according to common methods (instructions for determining bactericidal properties of new disinfectants N 739-68, 71 in the modification of the all-Russian scientific research Institute of preventive toxicology and disinfection, Moscow) with the use of conditionally pathogenic microorganisms: Escherichia coli, 1257; Staphylococcus aureus, 906.

For cultivation of microorganisms and experiments used mastopathy agar, serum broth. Daily test culture evenly distributed across the surface of the model test surfaces (glass, tile, enamel, linoleum, painted wood). Used the tool "Vilag-2 was sprayed from an aerosol can from a distance of 20-25 cm to full hydration. After a certain exposure (single treatment - 30 minutes) the surface was wiped with sterile towels (5x5), which are then immersed in 20% serum broth (SB). Petri dishes with the crops of the SAT was placed on 24-48 hours thermo the results presented in table 2.

Table 2 shows that the processing tool "Vilag-2" provided disinfection test the surface of the tile infected cultures of Escherichia coli and Staphylococcus aureus from about 99.9 to 100%, in the claimed range of values (range 2-4) at exposure 30 minutes

Most high disinfecting effect from 4 types of funds (percentage of disinfection amounted to 100.0%). Reduction of resin, vilayna and propellant below the lower limit (option 1) leads to a decrease in the percentage of disinfection with up to 99.91 per 93,51%. Increasing the amount of propellant at a constant value vilayna and resin (option 5) leads to a decrease in the percentage of disinfection with 100,0 up 99,94%, in connection with the deterioration of the treatment on the treated surface. The increase in the number vilayna and resin above the upper limit (option 6) when 100,0% decontamination of surfaces economically unfounded, because the same effect is achieved when the values of the components at the upper limit of the claimed range.

The original version, not containing vilain, obezzarazhivatel surface only 57.2% (against E. coli) and 42.0% (in respect of St. aureus), i.e. 2 times inferior in activity means "Vilag-2".

Based on the obtained data 4 varial, linoleum, glass). A benchmark comparison served as chloramine, which was similarly Villagio put into the container with propellant and alcohol and investigated in aerosol form (5% bleach).

The results of the tests are presented in table. 3. Studies have shown that the "Vilag-2" at one surface treatment of wood, enamel, tiles, glass ensures the destruction of vegetative forms of bacteria from 98,6 to 99,92%, and the benchmark comparison - chloramine from 60,0 up to 81%. With double the processing of infected surfaces the percentage of disinfection for "Vilag-2" amounted to 99.99 100.0% of cases, for chloramine 99,7-of 99.85%.

Thus, the inventive tool is more active than the standard of comparison as single and double handling.

Comparative results for the disinfection of surfaces, infected culture St. aureus by aerosol spray means "Vilag-2 and hydrogen peroxide (see table. 4).

The effectiveness of disinfection in the treatment of air in areas considered to reduce the test microbes deposited on the test surface. Contaminated test surfaces were placed in different points in space at different levels from the floor. Exposure Tskitishvili-2" was 20-25 ml/m3, 10% hydrogen peroxide - 180-200 ml/m3.

From table. 4 shows that the use of Vilag-2" spray method at exposure 30 min resulted in complete decontamination of bacterial microflora (St. aureus). The efficiency of disinfection of surfaces from tile, wood, glass, plastics amounted to 100%. The hydrogen peroxide provided obezzarazhennye 100% only surfaces of wood and glass.

Disinfection of the premises, the infected culture of Staphylococcus aureus was achieved 20% solution of formaldehyde at a dose of 60 ml/m3or 12 g/m3at 12 hours of exposure.

Comparing the experimental data from the literature shows that the flow of funds "Vilag-2" required for complete disinfection of surfaces, 3-8 times lower than the cost of hydrogen peroxide and formaldehyde to achieve the best results.

In addition, work carried out on various types of equipment obstetric hospital (generic). As the test cultures were used saprophytic strains of Staphylococcus aureus and Escherichia coli with typical morphological and cultural properties. The test culture was applied on the surface (glass, linoleum, wood, metal, cafe is> the exposure time - 30 minutes

After exposure were taken looking into the number 40 (20 on the determination of E. coli, 20 on the definition of St. saprophyticus). The method of inoculation and the results accepted.

Were studied and virucidal activity of the proposed drug. As the test culture was used polio vaccine used for intake through the mouth. Application of the test culture on the surface, processing the drug, taking swabs similar to the previous paragraph.

Selection of culture poliovirus was performed by the classical method in Virology laboratory for cell culture ner-2. The results of the experiments are presented in table. 5.

From table. 5 shows that the disinfectant "Vilag-2" leads to a complete decontamination of the microflora of various types of equipment, made of glass, linoleum, wood, metal, tile, i.e. the efficiency of disinfection was 100% in the presence of controls 1104to 9,7104microbial cells on the test object.

Results antiviral activity funds "Vilag-2" on the surface of the generic equipment showed no cytopathogenic effect and CLASS="ptx2">

Aerosol disinfectant "Vilag-2" is a product of hazard class 4. His LD50for laboratory animals albino rats is greater than 5000 mg/kg the product has no locally irritant, allergenic, sensitizing action, has no inhalation effects on a living organism.

Similar in action - sanitizer "Vilain is a toxic substance, its LD50-250 mg/kg

Comparing the data on the toxicity shows that the lethal dose of the "Vilag-2", causing the death of 50% of laboratory animals, exceeds that vilayna 20 times. Aerosol disinfectant "Vilag-2 is less toxic than similar action "Vilain".

Thus, there are aerosol disinfectant "Vilag-2" refers to the 4th class of hazard, highly effective against bacterial and viral infections for the disinfection of air, surfaces, medical institutions, slightly irritating to mucous membranes and does not reduce its activity for a period exceeding one year.

1. Aerosol disinfectant, comprising an organic polymer substance, propellant, ethyl Sedona with a vinyl acetate content of the first component 30 wt.% (resin SWAP-3) and an additional bactericidal additive 2-methyl-5-di (trifluoromethyl)oxymethylene (Vilain), in the following ratio of components, wt.%:

2-Methyl-5-di(trifluoromethyl)oxymethylene - 4,0 - 5,0

Copolymer of vinylpyrrolidone with vinyl acetate content of the first component 30 wt.% - 0,25 - 1,5

Propellant - 20,0 - 50,0

Ethyl alcohol - Rest

2. Means under item 1, characterized in that as it contains propellant DICHLORODIFLUOROMETHANE (Halocarbon 12) or a mixture of DICHLORODIFLUOROMETHANE (Halocarbon 12) and trichloromethane (Halocarbon 11) at a ratio of 1:1 or liquefied hydrocarbon gas is purified.


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