Product with biocidal activity for cleaning the surfaces of buildings and constructions

Abstract

FIELD: construction chemistry.SUBSTANCE: biocidal composition for surface treatment. A product with biocidal activity for cleaning the surfaces of buildings and construction structures includes a non-ionic surfactant, hydrogen peroxide and water, with the components in the following ratio, wt.%: hydrogen peroxide – 5–9, non-ionic surfactant – 0.5–2, purified water – the rest.EFFECT: product with biocidal activity for treating mineral surfaces and simplifies its composition.2 cl, 2 dwg, 1 ex

Description

[0001] The invention relates to the field of construction chemistry, in particular, to biocidal compositions, and is intended for the treatment of mineral, concrete, reinforced concrete, metal and other surfaces of buildings, building structures and products for the purpose of cleaning and protecting against biofouling and biofilms formed by bacteria, algae and mold fungi.

[0002] A disinfectant and cleaning agent is known (RU patent No. 2108810, IPC: A61L 2 / 16, published on 20.04.1998), containing hydrogen peroxide, sodium benzoate, water and additionally containing magnesium lauryl sulfate, glycerin, sodium oleate, disodium EDTA (Trilon B) in the following ratio of components, wt. %: hydrogen peroxide - 30, magnesium lauryl sulfate - 6, sodium benzoate - 1, disodium EDTA (Trilon B) - 1, glycerin - 1, sodium oleate - 1, distilled water - the rest. This prolonged-action product is intended for treating contact surfaces, in particular for disinfecting indoor surfaces, sanitary equipment, linens, dishes, and medical products.

[0003] The disadvantages are: multi-component composition, difficulty of production, high cost, limited scope of application.

[0004] A liquid bleach composition is known (RU patent No. 2162907, IPC: D06L 3 / 02, 10.02.2000) containing hydrogen peroxide, a mixture of anionic and nonionic surfactants, citric acid and an auxiliary additive, which is a mixed complexing agent consisting of sodium pyrophosphate, sodium carboxymethyl cellulose or carboxymethyl starch and ethylenediaminetetraacetic acid, taken respectively in a ratio of 1:1-3:10 with the following ratio of components in the composition, wt. %: hydrogen peroxide 5-10; citric acid 0.05-1; a mixture of anionic and nonionic surfactants 4-14; mixed complexing agent 0.13-1.2; water the rest up to 100%.

[0005] The disadvantages of the analogue are: a narrow scope of use - only for bleaching textile materials; no description of the bactericidal and fungicidal effects.

[0006] The closest to the proposed invention is a disinfectant and cleaning agent (RU patent No. 2337715, IPC: A61L 2 / 18, published on 10.11.2008) containing alkyl dimethyl benzyl ammonium chloride (QAC), glyoxal, glutaraldehyde, a hydrophilic nonionic surfactant, Trilon B, isopropyl alcohol and water, an anti-corrosion substance in the form of oxyethyl lignin diphosphonic acid (OEDPA) and an oxidizing agent in the form of hydrogen peroxide in the following ratio of components: Alkyl dimethyl benzyl ammonium chloride (QAC) 24.0-26.0; Glyoxal 4.5-5.5; Glutaraldehyde 0.8-1.2; Propanol-2 (isopropyl alcohol) 11.0-15.0; Sintanol ALM-10 (non-ionic surfactant) 2.0-5.0; Trilon B0.1-0.5; Oxyethyl lignin diphosphonic acid (OEDPA) 0.1-0.4; Hydrogen peroxide 2.0-4.0; Water up to 100%.

[0007] At concentrations of 0.1-2.0% (by product strength), this product disinfects various objects (surfaces, patient care items, laboratory glassware, cleaning materials, medical devices) contaminated with gram-negative and gram-positive bacteria (including Mycobacterium 85), fungi, and poliovirus type 1, within 15-120 minutes, depending on the solution concentration, the type of microorganism, the object being disinfected, and the presence of organic contamination. The invention ensures effective repeated use of working solutions until their appearance changes (clouding, flakes, etc.) during the expiration date of the working solutions.

[0008] The disadvantages of the prototype are: multi-component composition, difficulty of production and limited availability of components, narrow scope of application (not intended for building surfaces), no pronounced fungicidal effect.

[0009] The technical result that the proposed invention is aimed at achieving consists in obtaining a product with biocidal activity for treating mineral surfaces and simplifying its composition.

[0010] The key advantages of the proposed solution are: high biocidal activity, manifested in a broad spectrum of antimicrobial action (including gram-positive and gram-negative bacteria, mold and yeast fungi), the ability to destroy complex microbial biofilms and provide a long-term protective effect; an optimized composition with a minimum number of components, excluding toxic and environmentally hazardous substances while using available raw materials; technological advantages expressed in ease of preparation without the need for complex equipment, stability during storage and ease of application using various methods; cost-effectiveness achieved due to low production costs, optimal consumption and reduced frequency of re-treatments;as well as safety of use, characterized by low toxicity, non-flammability, fire and explosion safety, and the possibility of use in residential premises and at water infrastructure facilities.

[0011] This is achieved by the fact that in a product with biocidal activity for cleaning the surfaces of buildings and constructions, including a non-ionic surfactant, hydrogen peroxide and water, in the following ratio of components, wt. %:

[0012] Hydrogen peroxide 5-9 Nonionic surfactant 0,5-2 Purified water Rest

[0013] Furthermore, the claimed technical solution has an optional feature that characterizes its particular case, namely:

[0014] - N-oxides of alkyl dimethylamines C12, C14 or their mixtures can be used as non-ionic surfactants.

[0015] The proposed product outperforms similar solutions in a number of ways: it's less expensive than commercial alternatives, more effective against biofilms, easier to manufacture, and maintains its protective properties longer. Key advantages over the prototype include a simplified composition (3 components instead of 6+), specialization for mineral surfaces, and enhanced fungicidal effect due to optimized component concentrations.

[0016] Thanks to these properties, the use of this product allows you to clean and protect the surfaces of various building structures from the formation of complex microbial biofilms and helps suppress the processes of biocorrosion of building materials.

[0017] The preparation of a product with biocidal activity for cleaning the surfaces of buildings and constructions is carried out in the following sequence.

[0018] To prepare the solution, pour purified water into a container. Add 1.5% non-ionic surfactant and 6% hydrogen peroxide while stirring. Filter the prepared solution and pour into an airtight container.

[0019] The biocidal properties of the proposed product were determined experimentally.

[0020] Tests to evaluate antimicrobial activity used test cultures of bacteria and fungi, which are characterized as typical destructors of materials and structures under different environmental conditions.

[0021] Antimicrobial activity was assessed quantitatively by classical methods, in comparison with other bactericidal compositions and their pure components, see Fig. 1, 2.

[0022] Fig. 1 - bactericidal activity of the test agent;

[0023] in Fig. 2 - fungicidal activity of the test agent.

[0024] The results of laboratory tests showed that the claimed product simultaneously exhibits pronounced bactericidal activity (a wide zone of suppression of test strains of biodestructors, such as Bacillus subtilis, Pseudomonas putida, etc.) and very high fungicidal activity (an extensive zone of suppression of the growth of micromycetes of the genus Penicillium).

[0025] Field tests have confirmed the effectiveness of the composition against a wide range of microorganisms: a significant reduction in biofouling on mineral and other surfaces was noted under conditions of varying humidity, while maintaining the protective effect for a long time.

Claims

1. A product with biocidal activity for cleaning the surfaces of buildings and construction structures, comprising a non-ionic surfactant, hydrogen peroxide and water, characterized in that the components are present in the following ratio, wt. %: Hydrogen peroxide 5-9 Nonionic surfactant 0,5-2 Purified water Rest 2. The agent according to paragraph 1, characterized in that N-oxides of alkyl dimethylamines C12, C14 or mixtures thereof are used as non-ionic surfactants.

Images