RU2533425C1 - Washing and disinfecting preparation - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: washing and disinfecting preparation contains the following components, wt %: a non-ionogenic surface-active substance (SAS) - 1.5-5.0; alkyldimethylbenzylammonium chloride and/or didecyldimethylammonium chloride - 3.5-5.5; potassium hydroxide - 5.0-10.0; potassium methasilicate - 2.0-4.5; sodium gluconate - 5-10; triethanolamine - 0.5-1.5 and water - to 100.

EFFECT: extension of a spectrum of removable soiling, high washing ability and reduction of a negative ecological influence on the environment.

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Description

The invention relates to liquid detergent disinfectants based on Quaternary ammonium bases and is intended to remove contaminants of oil and fat, protein, organic origin, as well as the purposes of disinfection of equipment in the food industry and catering.

Known detergent and disinfectant for processing dairy equipment. To increase detergents and disinfectant activity, it contains the following components, wt.%: Water 16-20, sodium metasilicate 20-30, sodium tetraborate 6-10, potassium bromide 3-5, sodium hydroxide 2-4, sodium fluoride 0.15 -0.25, potassium bisalkylpolyoxyethylene phosphate 0.25-0.75, sodium hydrochlorite up to 100 (SU 1325062 A1, C11D 7/04, decl. 12.03.1986, publ. 23.07.1987).

The known agent does not have a sufficiently high washing ability, since the high content of metasilicates leads to the release of silicon dioxide and deposition on the surface to be cleaned, which prevents cleaning.

Disinfectants based on quaternary ammonium compounds are known. The well-known washing and disinfecting agent “EMC-SHCHH” for washing and disinfecting milking units with a long milk line (RU 2217489, IPC C11D 3/48, claimed 23.05.2002, publ. 27.11.2003) contains, wt.%: Nonionic surfactant 0 , 15-3.0, potassium hydroxide 3.0-20.0, sodium metasilicate 3.0-20.0, hydroxyethylene diphosphonic acid 1.5-5.0, sodium hypochlorite 1.5-12.0, sodium tripolyphosphate, or sodium pyrophosphate, or trisodium phosphate - the rest. The tool is aimed at increasing the washing action and disinfectant activity. The disadvantages of this detergent composition is the high content of phosphate-containing compounds and sodium hypochloride, which harm water bodies when they enter sewage.

Closest to the claimed technical solution is the detergent selected as a prototype for simultaneous washing and disinfection of equipment at food industry enterprises, containing, wt.%: Sodium hydroxide 11.5-12.5, alkyldimethylbenzylammonium chloride 0.9-1.1, disodium salt of ethylenediaminetetraacetic acid 0.1-0.2, tripolyphosphate 2.8-3.2, liquid sodium glass 3.8-4.8, water - the rest (RU 2209236, IPC C11D 3/48, claimed 28.11.2001 published on July 27, 2003). However, the product has insufficient detergency in relation to protein and fat contaminants, has a limited range of contaminants to be removed, since the product contains exclusively cationic surfactant-alkyl dimethylbenzylammonium chloride. The tool does not provide sufficient protection of the metal from corrosion, and also has a relatively high consumption of funds during disinfection due to the low percentage of input disinfectant - cationic surfactant. In addition, the introduction of phosphate-containing compounds determines its negative impact on the environment.

The technical task of the claimed invention is to remedy these disadvantages, namely: expanding the range of removable contaminants while maintaining a high washing ability and reducing the negative environmental impact on the environment.

The problem is solved in that the detergent disinfectant containing alkali metal hydroxide, detergent additive, cationic surfactant, complexing agent, disinfectant, water, according to the invention it additionally contains an alkaline anticorrosive agent in the form of potassium metasilicate and a hydrotropic agent in the form of triethanolamine, and contains potassium hydroxide as an alkali metal hydroxide; a nonionic surfactant in the form of a mixture of alkylpolyglycoside as a washing additive in, as a disinfectant - cationic surfactant as benzalkonium chloride and / or didecyldimethylammonium chloride, and as a complexing agent - sodium gluconate, and water in the following ratio, wt.%:

Potassium hydroxide 5.0-10.0 Nonionic surfactant (surfactant) - mixture of alkyl polyglycosides 1,5-5,0 Cationic Surfactant alkyldimethylbenzylammonium chloride and / or didecyldimethylammonium chloride 3,5-5,5 Potassium metasilicate 2.0-4.5 Triethanolamine 0.5-1.5 Sodium Gluconate 5.0-10.0 Water up to 100

The combination of the components taken within the specified limits provides a high washing ability with respect to organic protein-fat contaminants using foam processing technology, as well as the necessary level of disinfection of the treated surfaces.

The expansion of the spectrum of removed contaminants is achieved by the addition of nonionic surfactants, such as, for example, a mixture of alkyl polyglycosides. Due to the introduction of a nonionic detergent in the formulation — a mixture of alkyl polyglycosides, the claimed composition acquires high detergent and wetting properties against complex protein-fat contaminants, and also increases the foaming ability of working solutions.

The increase in the washing ability of the product is achieved as a result of the simultaneous use of activators: alkaline agents - potassium hydroxide and potassium metasilicate, with the optimal content of the amount of nonionic surfactant - alkyl polyglycosides. The high pH of the solution of the declared detergent due to the introduction of potassium hydroxide and potassium metasilicate contributes to the emulsification of organic contaminants, the action of nonionic surfactants in an alkaline environment effectively removes oil-fat and protein contaminants, which greatly expands the range of contaminants removed.

The relatively high content of potassium metasilicate, which has the properties of an inhibitor, as well as the presence of cationic surfactants in the detergent composition, prevents the formation and spread of corrosion foci.

The tool is prepared as follows.

Water is charged into a reactor equipped with a stirrer, then, with stirring, the calculated amount of sodium gluconate, after which potassium hydroxide and potassium metasilicate are added according to the formulation, the mixture is stirred and cooled to room temperature. In a separate container, a solution of surfactants is prepared — alkyl polyglycosides, alkyl dimethylbenzylammonium chloride and / or didecyldimethyl ammonium chloride and triethanolamine at the ratios indicated in the formula. At the final stage, the surfactant solution is poured into an alkaline base, mixed, the finished detergent is fed to the packaging. The finished detergent is a transparent unpainted liquid, with a density of 1120-1250 kg / cm ³ ; pH 12.7-13.5 units

The washing ability was determined by the gravimetric method - the ratio of the degree of removal of contamination with a solution of the test detergent on one type of surface to the degree of removal of pollution with a solution of the composition of comparison on the same surface, under the same processing conditions. As a model contamination, a protein-containing mixture was used, as well as a mixture of vegetable and animal fats characteristic of the food processing industry.

Tables 1 and 2 show comparative data of the washing ability of the product according to the claimed proposal in comparison with the known detergent (prototype). A comparison of the test results shows that the inventive detergent can increase the washing ability in relation to both protein and fat component of contaminants. The inventive detergent has a high level of foaming, which makes it possible to use it using foaming equipment.

Table 2 also shows the assessment of the corrosion rate determined during the processing of equipment made of steel materials (0.12-0.15 g / m ² per year).

The inventive detergent disinfectant has a number of useful physico-chemical properties: wetting, degreasing, disinfecting ability. It provides high washing ability with respect to protein and fatty contaminants, high foaming, low level of corrosion. By eliminating phosphates and phosphonates, the level of environmental hazard is reduced. The invention is applicable for use in food industry enterprises for washing equipment and industrial premises.

Claims (1)

Detergent disinfectant containing alkali metal hydroxide, detergent, cationic surfactant, complexing agent, disinfectant, water, characterized in that it additionally contains an alkaline anticorrosive agent in the form of potassium metasilicate and a hydrotropic agent in the form of triethanolamine, and as an alkaline hydroxide metal contains potassium hydroxide, as a detergent additive - nonionic surfactant in the form of a mixture of alkylpolyglycosides, as a disinfectant - cationically f surfactant in the form of alkyldimethylbenzylammonium chloride and / or didecyldimethylammonium chloride, and sodium gluconate as a complexing agent, in the following ratio, wt.%:
Potassium hydroxide 5.0-10.0 Nonionic surfactant (surfactant) - mixture of alkyl polyglycosides 1,5-5,0 Cationic Surfactant alkyldimethylbenzylammonium chloride and / or didecyldimethylammonium chloride 3,5-5,5 Potassium metasilicate 2.0-4.5 Triethanolamine 0.5-1.5 Sodium Gluconate 5.0-10.0 Water up to 100