RU2318853C2 - Anti-glaze composition - Google Patents

Abstract

FIELD: anti-glaze compositions.

SUBSTANCE: invention relates to anti-glaze composition based on calcium chloride, urea magnesium chloride, potassium chloride, magnesium chloride, and high-molecular cationic polymer (such as water-soluble polymeric cationite-402) as corrosion inhibitor. As potassium chloride solution neutralization product of abgase hydrochloric acid with calcium hydroxide. Composition of present invention makes it possible to reduce working temperature to -22°C.

EFFECT: safe composition of decreased corrosion activity; inexpensive components.

2 cl, 4 ex, 1 tbl

Description

The invention relates to the field of applied chemistry, in particular to methods for producing an anti-icing reagent, which find various applications, the main of which is the use for removing ice on runways of airfields, as well as on highways, sidewalks and in other areas of the national economy.

Known anti-icing composition based on calcium, magnesium and urea chlorides, which is introduced as a component of fertilizers [US 5683619, 1997].

Known anti-icing composition containing at least 10% whey, at least 5% water and salt: sodium chloride, calcium chloride, magnesium chloride, calcium acetate, potassium chloride or urea and substances that reduce slipping, such as sand or sawdust [US 5919394 , 1999].

The disadvantage of the above compositions is their high corrosive effect on metals.

Known anti-icing composition comprising calcium nitrate, magnesium nitrate, urea and surface-active substances (surfactants) containing a corrosion inhibitor - urotropin and a mixture of salts of fatty acids [RU 2173329, 1999]. Known anti-ice composition has a low corrosive effect, however, the disadvantage of this composition is the content of nitrates, which have toxicity and environmental incompatibility for animals.

The closest in technical essence and the achieved result is an anti-icing composition comprising an aqueous solution of calcium chloride and urea, which additionally contains a corrosion inhibitor of metal surfaces from a number of Quaternary ammonium compounds, such as polybenzylammonium [RU 2169751, 2000]. However, the known anti-icing composition contains specific reagents, namely quaternary ammonium compounds, which increases the cost.

An object of the present invention is to provide an anti-icing composition based on cheap raw materials.

The technical result when using the proposed technical solution is expressed:

- in the creation of a composition characterized by low corrosion toxicity and safety for plants and animals,

- in reducing the operating temperature to -22 ° C,

- the possibility of using cheap components — abdominal hydrochloric acid and calcium hydroxide — a by-product of the production of the dibasic salt of calcium hypochlorite,

- the presence of a high molecular weight cationic polymer in the anti-icing composition prevents the corrosive action of calcium chloride on the metal structures of automobile vehicles.

The above technical result in the known anti-icing composition based on calcium chloride, urea magnesium chloride, and a corrosion inhibitor is achieved by the feature that the anti-icing composition contains a high molecular weight cationic polymer, VPK-402 (water-soluble polymer cation exchange resin - 402 TU 2227-, as a corrosion inhibitor) 184-00203312-98 with amendment 1, 2) and potassium chloride, and as a solution of calcium chloride, the product of neutralization of hydrogen chloride hydrochloric acid is used with calcium hydroxide.

The claimed technical solution is confirmed by the following examples.

Example 1

70 ml of a 32% calcium chloride solution are poured into a stirred reactor; 9.0 g (9 wt.%) Magnesium chloride; 0.02 g (0.02 wt.%) Urea; 0.01 g (0.01 wt.%) Potassium chloride; 0.3 g (0.3 wt.%) Of the high molecular weight cationic polymer VPK-402.

The result is an anti-icing composition, the test results of which are shown in table 1.

Example 2

80 ml of a 30% solution of calcium chloride are poured into a stirred reactor; 10 g (10 wt.%) Of magnesium chloride, 0.03 g (0.02 wt.%) Of urea; 0.03 g (0.03 wt.%) Potassium chloride; 0.3 g (0.3 wt.%) Of the high molecular weight cationic polymer VPK-402.

The test results of the obtained anti-icing composition are shown in table 1.

Example 3

80 ml of a 32% solution of calcium chloride are poured into a stirred reactor; 11 g (11 wt.%) Of magnesium chloride, 0.02 g (0.02 wt.%) Of urea; 0.01 g (0.01 wt.%) Potassium chloride; 0.3 g (0.3 wt.%) Of the high molecular weight cationic polymer VPK-402.

The result is an anti-icing composition, the test results of which are shown in table 1.

Example 4

80 ml of a 25% solution of calcium chloride, 11 g (11 wt.%) Of magnesium chloride, 0.02 g (0.02 wt.%) Of urea, 0.01 g (0.01 wt.) Are poured into a stirred reactor. %) potassium chloride, 0.1 g (0.1%) of the high molecular weight cationic polymer VPK-402.

The result is an anti-icing composition, the test results of which are shown in table 1.

Table 1. Test results of anti-icing compositions pp Examples Working freezing temperature, ° С The corrosion rate, g / m ² · hour Consumption per 1 km of lane, l CaCl ₂ solution (32% solution) _ -fifteen 0.015 150-250 one. Composition 1 -twenty 0.0018 100-200 2. Composition 2 -22 0.004 100-200 3. Composition 3 -22 0.005 100-200 four. Composition 4 -twenty 0.0055 100-200

Claims (2)

1. Deicing composition based on a solution of calcium chloride, urea, a corrosion inhibitor, characterized in that the deicing composition as a corrosion inhibitor contains a high molecular weight cationic polymer VPK-402, potassium chloride and magnesium chloride in the following ratio, wt.%: Calcium chloride 25-32 Magnesium chloride 10-12 Potassium chloride 0.01-0.03 Urea 0.02-0.03 VPK-402 0.1-0.3 Water Rest 2. The anti-icing composition according to claim 1, characterized in that as the solution of calcium chloride, the product of the neutralization of hydrogen chloride hydrochloric acid is used with calcium hydroxide.