SU1740407A1 - Agent for cleaning solid surface - Google Patents

Abstract

The invention relates to household chemicals, in particular, means for cleaning the solid surface of glass and metal. The goal is to increase safety during use, reduce corrosivity. The product contains 5-10 wt.% Catholyte alkyltrimethylammonium chloride with a redox potential of (-300) - (- 400) mV and the rest is the anolyte of a 6% aqueous solution of NaClcpH 0.05-0.1 and redox potential (+1190) - (+ 1210) mV. In this case, the cleaning ability of the agent reaches 100%, the corrosivity is 0.5-1.1 mm / year (for steel) against 21.5 mm / year for a known composition, and by reducing the acid concentration, the safety of the agent is improved. 3 tab.

Description

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The invention relates to detergents and cleaning agents for technical purposes and can be used for cleaning metal and glass surfaces of agricultural machines, equipment, glass greenhouses and other objects.

The aim of the invention is to increase the safety of using the agent while maintaining the cleaning properties and reducing its corrosivity.

The anolyte of an aqueous solution of sodium chloride and catholyte alkyltrimethylammonium chloride are obtained in an electroactivator of the type ELKHA-046. After preparation, the agent is applied by spraying in an air stream onto contaminated glass of greenhouses. Contaminants are represented by organic sulfur-containing compounds that have polymerized on the surface of the glass under the influence of sunlight and heat.

For comparison, a known agent is prepared containing hydrofluoric acid, orthophosphoric acid and acrylamide.

The cleaning ability is determined by the weight method according to the formula

N Mi -M2 Ml - Mo

100 , % .

where N is the cleaning capacity,%

Mi is the mass of the sample with a contaminated surface, g;

Ma is the mass of the washed and dried sample after 30 minutes of exposure (passive) to the cleaning agent, g;

Мз - the mass of the washed and dried absolutely pure sample,

The corrosive activity of the cleaning agent is determined by the weight method and, knowing the density of the surface of the sample material of steel st. 3 and its holding time in

Vj fe

U 4 O

the test solution, determine the corrosion rate.

Table 1 shows the parameters of the cleaning ability of the agent, depending on the pH of the anolyte of a 6% aqueous solution of NaCI and the quantitative content of the catholyte alkyltrimethylammonium chloride DE7

From Table 1, it can be seen that the pH of the anolyte of a 6% aqueous solution of NaCI over 0.10 does not provide the necessary cleaning ability of the agent. The content of catholyte alkyltrimethylammonium chloride less than 5% also does not provide the necessary cleaning ability of the tool. The pH of the anolyte of a 6% aqueous solution of NaCI less than 0.05 and the content of catholyte alkyltrimethylammonium chloride more than 10% is not rational, since they require an increase in costs.

Table 2 shows the parameters of the electrochemical treatment of a 6% aqueous solution of NaCi in the anode chamber of a laboratory electroactivator.

The effect of the parameters of cathodic treatment of alkyltrimethylammonium chloride on the cleaning ability of the agent and the consumption of electricity for its treatment are shown in Table 3. For this experiment, the anolyte of a 6% aqueous solution of NaCI is treated to a pH of 0.10 and an ORP + 1190 mV with a content of catholyte of alkyltrimethylammonium chloride of 5 wt.%.

Corrosion activity of the proposed composition containing 5-10 wt.% Of catholyte alkyltrimethylammonium chloride with a redox potential of minus 300 to minus 400 mV and up to 100

wt.% anolyte of a 6% aqueous solution of sodium chloride with a pH of 0.05-0.10 and a redox potential from plus 119 to plus 1210 mV is 0.51.1 mm / year (corrosion rate of steel). The corrosion rate when using a known agent is 21.5 mm / year.

Thus, the corrosion rate at

the use of the proposed means is much lower in comparison with the known. At the same time, by reducing the acid concentration, the safety of using the agent is significantly increased.

FORUMAWLAH AND ISLANDS

Solid surface cleaner containing acid and surfactant, characterized in that, in order to increase safety

its use while maintaining the purifying properties and reducing the corrosivity, the agent contains as an acid anolyte 6% aqueous solution of sodium chloride with a pH of 0.05-0.10 and a redox potential from plus 1190 to plus 1210 mV and as a surfactant -active substance it contains catholyte alkyltrimethylammonium chloride with a redox potential of minus 300 to minus 400 mV in the following ratio of components, wt.%: catholyte alkyltrimethylammonium chloride with a redox p potential from minus 300 to minus 400

mV 5-10; anolyte 6% aqueous solution of sodium chloride with a pH of 0.05-0.10 and redox potential from plus 1190 to plus 1210 mV to 100.

40

Table 1

Table 2

That blitz

Claims (1)

Claim A tool for cleaning a solid surface containing acid and a surfactant, characterized in that, in order to increase the safety of its use while maintaining cleaning properties and reduce corrosion activity, the tool contains as an acid anolyte 6% aqueous solution of sodium chloride with pH 0, 05-0.10 and with a redox potential of plus 1190 to plus 1210 mV, and as a surfactant it contains a catholyte of alkyltrimethylammonium chloride with a redox potential do.minus from minus 300 to 400 mV with the following ratio of components, wt%: katolitalkiltrimetilammony chloride with a redox potential of minus 300 to minus 400 mV 5-10;. anolyte of a 6% aqueous solution of sodium chloride with a pH of 0.05-0.10 and a redox potential from plus 1190 to plus 1210 mV to 100. Content- The cleansing ability of the agent,%, at anolyte pH I catholyte alkyltrime? tilammonium chloride, wt.% 0.04. 0.05 0.07 0.09 0.10 0.11 4 89 89 88 87 85 83 5 100 100 100 100 100 86 8 100 100 100 100 100 88 10 100 100 100 100 100 89 fifteen 100 100 100 100 100 89 Table 2 Specific energy consumption kWh / m ^ Parameters of 6% NaCI solution pH ORP, mV 160 0.04 + 1210 130 0.05 +1210 110 0,07 +1198 80 0.09 +1195 70 0.10 +1190 L __________ θά __________ 0.11 +1180 That BlitzZ Specific energy consumption, kWh / m ³ ORP of alkyltrimethylammonium chloride, mV Cleaning ability, ceteris paribus,% 43 -250 87 56 -300 100 67 -350 100 74 -400 -100 92 -450 97