Anti-icing composition

 

(57) Abstract:

The invention relates to the development of anti-icing compositions and can be used to combat ice on road and airfield pavements. Anti-icing composition comprises, in wt.%: 1,0-80,0 calcium nitrate, a 2.0 55,0 urea, 1,0-3,0 surfactant, 0.01 to 1.0 corrosion inhibitors and magnesium nitrate to 100. The technical result is an increase in the fusing ability of the composition with respect to ice, the extension of the temperature range of its melting steps, reduction of the composition and reduce its corrosive effect on metals. table 2.

The invention relates to the development of anti-icing compositions and can be used to combat ice on road and airfield pavements.

The number of known compositions to reduce the melting point of ice, which can be used as a de-icing means on artificial surfaces, in particular the composition is based on nitrates of calcium and magnesium [1]. However, this composition causes corrosion of metals and degradation (peeling) concrete coatings. 1. Frolov A. A. and other POLITERM solubility of the system Ca(NO3)2Mg(NO3)2H2O Reorgani the position on the basis of complex compounds nitrates of calcium and magnesium with urea, containing surfactant [2]. 2. RF patent 2112740. This composition is characterized by less than [1], a corrosive action on metals, does not cause damage to concrete surfaces.

However, due to the high content of urea in the composition of this composition eutectic temperature with ice increases by more than 10 degrees compared with [1] and is minus 26oC. as a Consequence, decreases the fusing ability of the composition with respect to ice and it can be used to combat ice at temperatures below minus 15 to minus 16oC.

It should also be noted that due to the high content in the composition [2] urea, which is expensive chemical product, increases the cost of the anti-icing composition that limits its wide application, particularly on roads.

In addition, this composition [2] has little corrosive effect on metals.

Objectives of the invention are: to improve the fusing ability of the anti-icing composition in relation to ice, expansion of the range of its melting steps, reduction of the composition and decrease its corrosion mponents in the composition, providing lowering the temperature of the eutectic composition with ice, since the eutectic temperature determines how the fusing ability of the composition and temperature range of its melting action, as well as by additional introduction into the composition of corrosion inhibitors.

The proposed ratio of components in the de-icing composition, wt.%:

Ca(NO3)2- 1,0-80,0

CO(NH2)2- 2,0-55,0

SURFACTANT - 1,0-3,0

Corrosion inhibitor - 0,01-1,00

Mg(NO3)2- Rest

The essence of the invention is that when the reduction in the composition of the share of urea, forming a eutectic with ice at higher temperatures (minus 11oC) than the nitrates of calcium and magnesium (minus 39oC), the melting point of the Quaternary eutectic calcium nitrate - magnesium nitrate - urea - ice decreases. This effect could not be achieved in the composition of the prototype [2] because of the high content of urea.

To reduce the corrosiveness of the composition with respect to metals in its composition introduces corrosion inhibitor (in an amount of 0.01 to 1.00%), selected from the range: methenamine, a mixture of salts of fatty and sulfamic acid, the mixture is compared with components in comparison with the composition of the prototype are given in table. 1, the results of the corrosion tests - in table. 2.

Example. 100 g heated to 60oC water injected 63,3, Ca(NO3)24H2O, 33,9, Mg(NO3)26H2O, 35,0 g CO(NH2)2, 1.3 g of surfactant and 0.07 g of the corrosion inhibitor. The resulting slurry is stirred for 15-20 min, then granularit and dried.

The resulting composition corresponds to the composition of the 3 that are listed in the table. 1.

Anti-icing composition comprising calcium nitrate, magnesium nitrate, urea and surfactant, characterized in that it further comprises a corrosion inhibitor, and a corrosion inhibitor selected from the range: methenamine, a mixture of salts of fatty and sulfamic acid, the mixture alkylenediamine derivatives of tall oil acids in the following ratio, wt.%:

Ca(NO3)2- 1,0 - 80,0

CO(NH2)2- 2,0 - 55,0

SURFACTANT - 1,0 - 3,0

Corrosion inhibitor - 0,01 - 1,00

Mg(NO3)2- The rest

 

Same patents:

The invention relates to a tool for removing ice on the basis of the acetates of alkali metals, alkali metal formate or a mixture of them both for road surfaces
The invention relates to methods of producing materials for application to the surface to prevent or reduce the buildup of ice, fog or water, for deposition of materials on the surface to prevent freezing or thawing
The invention relates to the field of inorganic chemistry

The invention relates to the production of anti-icing composition of an aqueous solution for surface treatment of roads from winter slipperiness (snow forward, ice, ice slick on the roads and streets in cities and towns

Deicing composition // 2167180
The invention relates to chemical industry

The invention relates to chemical industry

The invention relates to the field of construction and operation of residential and industrial buildings and structures and can be used to protect their roof and other elements from moisture and from an intensive process of icing

The invention relates to anti-icing and means for anti-icing of aircraft on the basis of glycols and water with a water-soluble crosslinked acrylic polymer as a thickener

The invention relates to a method for gidrofobizirovannogo dispersed wood intended for use as a filler in polymer materials

The invention relates to compositions for coating, lowering of the adhesion forces between the ice and the various surfaces and protect from exposure to atmospheric factors, and can be used for de-icing of metal structures, radar installations (antennas and domes shelters), refrigeration equipment and other

FIELD: road servicing industry.

SUBSTANCE: the invention is dealt with the road servicing industry, in particular with the methods of extirpation of ice covering on motorways, bridges, flyovers, and also aerodromes. The method of the roadway covering slipperiness prevention provides for application of a roadway ice covering suppressing reactant based on acetate, in the capacity of which use a solution with pH=7-9.5, containing components in the following ratio (in mass %): magnesium acetate 13-17, potassium acetate 8-16, potassium hydrocarbonate 5-8, potassium carbonate 2-6, water-insoluble impurities 0-6, water - the rest. The roadway ice covering suppressing reactant may additionally contain a fired limestone in amount of 3-5 mass % in terms of calcium oxide. The method of production a roadway ice cover suppressing reactant for a roadway covering slipperiness prevention provides for mixing of a component containing a magnesium compound, iced acetic acid and water, in the capacity of the component containing the magnesium compound is used brucite, the stirring is exercised in two stages: first they continuously agitate brucite with water and a part of iced acetic acid in a stoichiometric ratio at the temperature of 50-70°C within 50-80 minutes, then, not terminating mixing at the same temperature in the produced mix with pH=5-6 add the rest of ice acetic acid and then add potash in amount exceeding by 0.1 - 6 % the stoichiometric ratio and continue agitation till production of the roadway ice cover suppressing reactant - a solution with pH = 7-9.5 with the above indicated composition. The used roadway ice cover suppressing reactant has composition mentioned above. The technical result consists in - maintenance of the low temperature at the reactant usage, ensuring the passing ice covered roadways motor vehicles metal corrosion protection and at use as the airfield runways coatings - the corrosion protection of metals used in aircraft designs as well. The roadway coating treated with the reactant has a high coefficient of adhesion, that reduces the accident rate on the roadways.

EFFECT: the invention ensures, that the roadway coating treated with the reactant decreases the accident rate on the roadways.

6 cl, 2 tbl, 4 ex

FIELD: chemical industry.

SUBSTANCE: invention relates to preparations used for prevention and removal of snow-ice formations in roads. An anti-glaze of ice preparation comprises the following components, wt.-%: calcium chloride, 15-50; sodium chloride, 48.5-83.5; potassium ferricyanide, 0.2-0.5, and sodium dihydrogen phosphate, 0.3-1.0. Anti-glaze of ice preparation in granulated form is resistant against caking, inhibits corrosion of metals and reduces inhibitory effect of chloride on plants.

EFFECT: improved and valuable properties of preparation.

FIELD: special reagents.

SUBSTANCE: invention relates to substances for applying on surface to prevent or diminish adhering ice, mist or water on it, for prevention of icing, in particular, to anti-glaze of ice reagents. The composite comprises the following components, wt.-%: calcium chloride, 25-32; urea, 2-7; sodium nitrite, 0.03-1.0, and water, the balance. Invention provides preparing the composite harmless for environment that doesn't show harmful effect on environment, doesn't corrode road coatings, and inhibits corrosion of metals. Agent shows economy and high effectiveness.

EFFECT: improved and valuable properties of reagent.

2 cl, 1 tbl

FIELD: road-transport industry.

SUBSTANCE: method includes applying substance on asphalt-concrete mixture. As substance silicon-organic modifier is used, loss of which at 1 m2 of area of pre-placed on road asphalt-concrete mixture at temperature 80-100°C is no less than 0,3-0,5 kg. After applying modifier, asphalt-concrete mixture is rolled.

EFFECT: higher efficiency, no corrosive effect on metals, effective at temperature above -20°C.

2 cl, 3 tbl, 3 ex, 1 dwg

FIELD: domestic chemistry.

SUBSTANCE: invention relates to agents using against misting and icing windshields in transports, sight glasses in agent of individual protection and can be used in living conditions for prevention showcase glasses icing. The composition comprises the following components, wt.-%: polyoxyethylene glycol ester of synthetic primary higher alcohols of (C12-C14)-fraction as a surface-active substance, 6-25; urea or thiourea, or mixture of urea and thiourea, 1-20; glycerol, 5-25; ethylene glycol, 5-41; dye, 0.0005-0.02, and a solvent, the balance. Propyl alcohol as propanol-1 or propanol-2 can be used as a solvent. The composition elicits an anti-misting and anti-icing properties, provides two-sided protection of sight glasses of transport agents and agents of individual protection in cooling the protecting glass surface up to -40°C, elicits the prolonged protective effect, it doesn't solidify at the environment temperature below -40°C and doesn't require the special technical devices for its applying.

EFFECT: valuable properties of composition.

3 cl, 1 tbl, 10 ex

FIELD: Composition of an anti-icing water solution for roads surface treatment.

SUBSTANCE: the invention is pertaining to production of composition of an anti-icing water solution for roads surface treatment against a winter slipperiness (snow rolling-ups, a glaze ice, black ice) n the roads and streets in cities and settlements. The composition contains, in mass %: 20-27 calcium chloride, 5-30 ethyl alcohol, 0.3-5 corrosion inhibitors (borax or sodium nitrite or their mixture), the rest - water. The technical result is - an increase of effectiveness of the composition application, an increase of friction coefficient due to a decrease of the ice density, a raise of the composition ice melting capacity.

EFFECT: the invention ensures an increase of effectiveness of the composition application, an increased friction coefficient and a decreased ice density, a raise of the composition ice melting capacity.

1 cl, 1 ex, 2 tbl

FIELD: materials for miscellaneous applications.

SUBSTANCE: grain mixture comprise, in mass %, 15-45% of compressed first salt of alkaline or alkaline-earth metal and 85-55% of the second salt of alkaline or alkaline-earth metal. The first salt is a waterless hygroscopic salt.

EFFECT: reduced cost.

14 cl, 4 dwg

FIELD: preventive means against freezing and sticking of loose materials to walls of mining and transport equipment; prevention of dusting on interim roads, open-cut mining; protection of rolling stock against freezing and blowing-off of loose materials, coal and peat for example.

SUBSTANCE: preventive means is made in form of mixture of solvent and thickening additive of oil nature. Used as solvent are distillation residues of coke and by-product process and/or by-products of production of butadiene, isoprene, isobutylene, ethylene both independently and in mixture with distillation residues of production process of polymers, pyrolysis residues, benzene, styrene and distillation residues of production of butanol, isobutanol, 2-ethyl hexanol acid and 2-ethyl hexanol. Solvent may additionally contain gas oils of thermal and catalytic cracking and gas oils of coking process. Used as thickening additives are mineral and synthetic oils of all kinds, mixture of used oils, oil sludge, oil residues and oil fuel. Components of thickening additive and solvent are used at any combination. Novelty of invention is use of wastes of various processes of oil and petroleum chemistry products.

EFFECT: extended field of application; cut costs; enhanced ecological safety.

5 cl, 1 dwg, 2 tbl, 17 ex

FIELD: suppression or reduction of icing on surfaces by means of antiicing compounds.

SUBSTANCE: proposed anti-icing compounds contain succinic acid and/or succinic anhydride and neutralizing base, sodium hydroxide, potassium hydroxide or ammonium hydroxide in particular. When mixed with water anti-icing compounds form succinates in the course of reaction which causes fast liberation of heat sufficient for melting ice on surface. According to other versions, anti-icing compounds contain glycol which inhibits repeated icing on cleaned surface. Specification gives description of sets of compounds for melting snow and ice.

EFFECT: enhanced efficiency of melting snow and ice on aircraft and territories of their operation.

29 cl, 11 dwg, 7 tbl, 2 ex

FIELD: motor-car industry; other industries; methods of production of the anti-icing reactant.

SUBSTANCE: the invention is pertaining to the method of production of the anti-icing reactants for maintenance of roads in winter. The method of production of the anti-icing reactant based on sodium chloride and calcium chloride provides for mixing of the sodium chloride with calcium chloride and their heating and drying. Sodium chloride crystals are coated with the atomized solution of calcium chloride and dried in the "boiling bed" kiln with production of the double-layer granules, the outer layer of which is composed out of calcium chloride. Sodium chloride crystals are coated with calcium chloride in two phases. The forming small particles of calcium chloride are fed into the cyclone, whence the cyclone dust of the calcium chloride is fed into the mixer for intermixing with the wet crystals of sodium chloride. The produced anti-acing reactant has the improved physicochemical thermodynamic properties.

EFFECT: the invention ensures, that the produced anti-acing reactant has the improved physicochemical thermodynamic properties.

3 cl, 1 ex, 2 tbl

Up!