Composition for de-icing and anti-icing surfaces of the aircraft (options)

 

(57) Abstract:

The invention relates to a new and improved liquid composition for de-icing and protecting against him on the surfaces of the aircraft. The composition contains a basic compound constituting the propylene glycol in the amount of from 35.0 to 55.0 wt.%, the diluent in the form of water from 44,0 up of 65.0 wt.%, the first non-ionic surfactant with HLB of 4 to 17 in number from 1 million-1to 0.5 wt.%, the second non-ionic surfactant with HLB of 5 to 18 in number from 1 million-1to 0.5 wt.%, moreover, the specified second non-ionic surfactant has an HLB of at least two units higher than the specified first non-ionic surfactant, and has a molecular weight greater than the molecular weight of the first nonionic surfactant; emulsifier in the form of polycarboxylate in the amount of 1 million-1to 0.5 wt.% and the control of pH in the range from 6 to 10 in number from 1 million-1to 1.0 wt.% in relation to the specified composition. As described compositions containing as the basis of ethylene glycol or a mixture of ethylene glycol and propylene glycol in an amount of from 35.0 to 80,0 wt.%, as the diluent in an amount of from 19.5 to 65,0 wt.%. Technical result: to obtain the liquid reaching the pre is their relates to a new and improved liquid composition for de-icing and anti-icing, mainly for use on the surfaces of the aircraft. More specifically, the composition for anti/anti-icing is a single-phase fluid with a low diffusion rate for delay start and development of freezing water on the treated surfaces during periods of precipitation.

Fluid de-icing is used for removal of frozen or partially frozen precipitation ice and snow surfaces, which, in accordance with the requirements, should be free from such contamination. Fluid for anti-icing prevents, for some time, re-freezing of water on the treated surfaces. Both types of fluids are well known in the art. For activities at airports in the fall of freezing precipitation it is necessary to apply fluid to combat/anti-icing. The longer the period of time between the moment of application fluid for anti-icing a surface, just cleaned from dirt, and the beginning of re-freezing on the surface, the better for the user. The standard way to measure this time delay is the stability spattered water Spray Endurance Test, WSET), which is largely dependent on thickening polymers to achieve operational characteristics, and have an apparent viscosity in the range 15000-55000 MP when measured at 20oC. This viscosity provides a thick layer. The largest contribution to the delay of re-freezing makes glycol. Time reached for liquids, known from the prior art, ranging from 30 to 130 minutes (currently the minimum standard for most modern liquid is 80 minutes.)

In the technique described range of liquid compositions for de-icing and anti-icing of aircraft. For example, in U.S. patent 4954279, MA et al. describes a composition for de-icing and anti-icing of aircraft. The composition comprises a microemulsion of the oil in a solution of water and glycol containing thickeners, emulsifiers, which are essentially water-insoluble, and alkanolamine, and represents a composition having properties for effective de-icing and anti-icing. The chemical composition and the chemical mechanism of action of fluid de-icing and anti-icing of the present invention are not described.

In U.S. patent 5118435, Nieh, describes compositions for protection against icing containing sausauge mixture of polyacrylic acid and with the apparatus. These compositions retain a high viscosity even when diluted with water, and demonstrate a high pseudo-plastic rheology that specifies the required properties of the spreading. The chemical composition and the chemical mechanism of action of fluid de-icing and anti-icing of the present invention are not described.

In U.S. patent 5268117, Fusiak et al., describes pseudo-plastic non-combustible composition for de-icing for use on open surfaces of the aircraft. The composition includes a liquid anti-icing glycol-based, containing 0.2 to 1.0% crosslinked poly(N-vinylpyrrolidone), used as the basic polymer additives, in amounts of from 0.05 to 5 wt.%; and water (C2-C3-allenglish in an amount of from 95 to 99.5 wt.%. The chemical composition and the chemical mechanism of action of fluid de-icing and anti-icing of the present invention are not described.

In U.S. patent 5273673, Ashrawi et al., describes compositions for protection against icing containing non-ionic surface-active alkylphenolethoxylate and hydrotap alkylarylsulfonate applied to the surfaces of the wing of the aircraft. In addition, the compositions for Eyeloveu acid and vinyl monomer, where the copolymer acts as a modifier of the thickener. The chemical composition and the chemical mechanism of action of fluid de-icing and anti-icing of the present invention are not described.

In U.S. patent 5334323, Schrimpf et al., describes liquid for de-icing and anti-icing of aircraft. These liquid compositions include glycols, crosslinked polyacrylic acid, nonionic surfactant based on alkoxysilane alcohols C10-C20, corrosion inhibitors, a mixture of NaOH and KOH, antioxidant, and water. The chemical composition and the chemical mechanism of action of fluid de-icing and anti-icing of the present invention are not described.

In U.S. patent 5461100, Jenkins et al., describes the fluid combat/anti-icing of the aircraft, comprising an aqueous solution of glycol-based, thickened by macromonomers containing polymer in an amount less than 5 wt.%. This is known in the art patent does not describe neither the chemical composition nor the chemical mechanism of action of fluid de-icing and anti-icing of the present invention.

None of the above patents, reflecting izvestnogo freezing of water on the surface of the protective film of fluid for anti-icing, how this is accomplished in the present invention.

Accordingly, the present invention is the description and definition of advanced liquid composition for de-icing and anti-icing with chemical mechanism for the regulation of water diffusion and delay, through this, the beginning of the re-freezing of water on the surface of the exposed film of fluid for anti-icing.

Another objective of the present invention is a chemical composition having a distinct chemical mechanism delays the beginning of the re-freezing of water on the surface of the protective film of fluid for anti-icing, when it is applied to the surface of the aircraft.

Another objective of the present invention is a liquid composition, the achievement of the purpose which does not depend solely on the application of the thickening polymer or polymers.

It should be borne in mind that liquids described in the present invention, and the liquid described herein in the examples are ready to use liquids to protect against icing and can be used when diluted with water to any extent, and the dilution depends on working ulitsa to liquid compositions for de-icing and anti-icing, mainly for use on the surfaces of the aircraft, and it consists of propylene glycol in the range from 35.0 to 55.0 wt.% with respect to the liquid composition, preferably from 51,0 52,0 to wt.% with respect to the liquid composition. Another option is a mixture containing ethylene glycol in the range from 35.0 to 80,0 wt.% with respect to the liquid composition, preferably from 59,0 to 63.0 wt. % with respect to the liquid composition. Another option is a mixture containing uncertain variable combination of propylene and etilenglikola, so that the total content of the glycol is in the range from 35.0 to 80,0 wt.% with respect to the liquid composition, preferably 45.0 to 65,0 wt.% with respect to the liquid composition.

The rest of the composition based on propylene glycol includes, mainly, the water in the range from 44 to 63.0 wt.% with respect to the liquid composition, preferably in the range from of 47.0 49.0 wt.% with respect to the liquid composition.

The liquid composition also contains the first low molecular weight non-ionic surfactant with HLB in the range from 4 to 17, with the preferred spacing HLB of 4 to 9; and used in the proportions, by weight, in the range from 1 million-1to 0, OSTO-active substance with a higher molecular weight with a HLB in the range from 5 to 18 with a preferred interval HLB of 13 to 18; and used in the proportions, by weight, in the range from 1 million-1to 0.5 wt.% in relation to the composition for de-icing and anti-icing. The second non-ionic surfactant has an HLB of at least two (2) units more than the first non-ionic surfactant.

The liquid composition also includes an emulsifier in the form polycarbosilane compounds present in amounts in the range from 1 million-1to 0.5 wt.% with respect to the liquid composition.

The liquid composition also contains a substance regulating the pH, to maintain the pH of the composition for de-icing and anti-icing between 6 and 10; and used in a mass ratio in the range from 1 million-1to 1.0 wt.% in relation to the composition for de-icing and anti-icing.

The preferred composition is a propylene glycol as the primary connection, as the substance itself lowers the freezing point; but other options include use as a primary connection of ethylene glycol instead of propylene glycol; or a combination of ethylene glycol and propylene glycol as a combined basis of the mixture instead of the prop the alternative embodiment of the compositions for de-icing and anti-icing are as follows.

I. the Primary connection for de-icing and anti-icing and) propylene glycol 35-55 wt.%; or (b) a glycol 35-80 wt.%; or C) a combination of propylene glycol and ethylene glycol 35-80 wt.%.

II. Water 20-65 wt.%.

III. Surface-active substances in the form of A. non-ionic surfactants with HLB in the range from 4 to 17, preferably in the range from 4 to 9, including compounds such as alkoxysilane derivatives of alcohols, alkyl phenols, amines and fatty acids; copolymers of propylene oxide and ethylene oxide; and cash equivalents; B. non-ionic surfactants with HLB in the range from 5 to 18, preferably in the range from 13 to 18, including compounds such as alkoxysilane derivatives of alcohols, alkyl phenols, amines and fatty acids; copolymers of propylene oxide and ethylene oxide; and cash equivalents from 1 million-1to 0.5 wt.%;

a) alkoxysilane (ethoxylated and/or propoxycarbonyl) derivatives of alcohols.

Examples of these compounds are the following compounds:

i) lauric alcohol + 4 mol of ethylene oxide;

ii) alerby alcohol + 12 mol of ethylene oxide;

iii) castor oil + 5 mol of ethylene oxide;

iv) servicemodelreg.exe.

The General formula for the ethoxylated alcohol is

WITHnH(2n+1)O-(C2H4O)x-H,

where n1, x=moles EO, also in the above formula CnH(2n+1)About may be substituted;

b) alkoxysilane (ethoxylated and/or propoxycarbonyl) derivatives of ALKYLPHENOLS.

Examples of these compounds are the following:

i) Nonylphenol +10 mol of ethylene oxide;

ii) op + 6 mol of ethylene oxide;

iii) dodecylphenol + 10 mol of ethylene oxide;

iv) dinonylphenol + 8 mol of ethylene oxide;

v) op + 4 mol of propylene oxide.

The General formula for the ethoxylated alkylphenol is

R1R2C6H3-O-(CH2CH2O)x-H,

where R1represents a CnH(2n+1)where n1,

R2represents a CnH(2n+1)or N,

x=mole EO

C) alkoxysilane (ethoxylated and/or propoxycarbonyl) derivatives of amines.

Examples of these compounds are the following:

i) stearylamine + 2 mol of ethylene oxide;

ii) Amin solid fat + 10 mol of ethylene oxide;

iii) amine soy + 4 mol of ethylene oxide;

iv) communityonline + 5 mol of ethylene oxide;

v) kakamanova amine is

R1N-(C2H4O)x-H, (C2H40)y-H,

where R1represents a CnH(2n+1)ornH(2n-1),< / BR>
x=mole 301,

y=mole EO

d) alkoxysilane (ethoxylated and/or propoxycarbonyl) derivatives of fatty acids.

Examples of these compounds are the following compounds:

i) stearic acid + 40 mol of ethylene oxide;

ii) oleic acid + 10 mol of ethylene oxide;

iii) fatty acids, tall oil + 7 mol of ethylene oxide;

iv) fatty acids of coconut oil + 4 mol of ethylene oxide;

v) lauric acid + 12 mol of propylene oxide;

vi) hydroxystearate acid + 2 mol of ethylene oxide.

The General formula ethoxylated fatty acids is

< / BR>
where R1=CnH(2n+1)ornH(2n-1),

N=5-17,

x=1 mol EO

(e) copolymers of propylene oxide and ethylene oxide.

Examples of these compounds are the following compounds:

i) ntarox PGPTM;

ii) macol 22TM;

iii) non-ionic R SeriesTM;

iv) pluronic PTM;

v) tetronic RTM.

IV. Emulsifier, such as polycarboxylate, from 1 million-1to 0.5 wt.%.

-1to 0.5 wt.%.

Composition for de-icing and anti-icing for aircraft according to the present invention includes a basic compound, such as propylene glycol and/or ethylene glycol as the main component of the anti-icer to reduce the freezing point of water. Propylene glycol is present in amounts of from 35.0 to 55.0 wt.% in relation to the composition for anti/anti-icing, preferably in the range from 51 to 52 wt. % of the composition for anti/anti-icing. The ethylene glycol is present in an amount in the range of from 35 to 80 wt.% in relation to the composition for anti/anti-icing, preferably in the range from 59 to 63 wt. % relative to the composition for anti/anti-icing. The combination of propylene glycol and ethylene glycol is present in an amount of from 35 to 80 wt.% in relation to the composition for anti/anti-icing, preferably in the range of 45.0 to 65,0 wt.% in relation to the composition for anti/anti-icing.

The other major ingredient of the mixture is water, which the carrier fluid for propylene glycol or ethylene glycol or mixtures of ethylene and up to 65,0 wt.% in relation to the composition, preferably in the range from of 47.0 49.0 wt.% with respect to composition. On the other hand, the water used in the composition containing only ethylene glycol is from 20 to 65 wt.% in relation to the composition, preferably from 37,0 41,0 to wt.% with respect to composition. The water used in compositions containing both ethylene glycol and propylene glycol, is water for dilution in the amount in the range from 20 to 65,0 wt.% with respect to compositions, preferably in the range from 35.0 to 65 wt.% with respect to composition.

Surfactant used in the present invention, includes a mixture of two types of nonionic surfactants with HLB in the range from 4 to 18. HLB is defined as a measure of the hydrophilic-lipophilic balance (HLB), so the higher the HLB, the better the compatibility with water. The first low molecular weight non-ionic surfactant has a HLB in the range from 4 to 11, preferably in the range from 4 to 9, and is used in an amount of 1 million-1to 0.5 wt.% in relation to the composition for de-icing and anti-icing. The second low molecular weight non-ionic surfactant has a HLB in the range from 5 to 18, predpochtitelney/anti-icing. The second non-ionic surfactant has an HLB of at least 2 units of different (higher) from the HLB of the first surface-active substance.

Both types of nonionic surfactants include compounds such as alkoxysilane (ethoxylated and/or propoxycarbonyl) derivatives of alcohols, alkyl phenols, amines and fatty acids; copolymers of propylene oxide and ethylene oxide; and their equivalents. Examples alkoxysilane derivatives in the table above) specifying the composition.

The emulsifier is present in the form polycarbosilanes connection. Polycarboxylates emulsifier has a molecular weight of from 500,000 to 3000000. The number polycarboxylates emulsifier used in the compositions of the present invention, is in the range from 1 million-1to 0.5 wt.% in relation to the composition for anti/anti-icing.

The present invention uses a substance that regulates pH, to achieve and maintain the pH of the composition for de-icing and anti-icing from 6 to 10. The pH regulators include such compounds as potassium hydroxide, sodium hydroxide, dailypost, organic bases-amines or is retene, is in the range from 1 million-1to 1.0 wt. % relative to the composition for anti/anti-icing.

Composition for de-icing and anti-icing can be either acidic or alkaline, depending on the overall chemical composition of all additives and necessary connections included in the system of anti-icer. If the composition is alkaline, the pH will be from 7,01 to 10; and if the composition is acidic, the pH will be from 6.00 to 6.99.

The liquid composition is preferred variant embodiment of the invention may also contain one or more components with a liquid composition properties, wraps, protivovspenivayushchie substances, flame retardants, regulators, water hardness and dyes.

Anti-corrosive compounds can be selected from the group consisting of tricresol, benzotriazole, alkoxysilanes of butandiol, thiourea, propargilovyh alcohol, sodium nitrate, Butin-1,4-diol and cash equivalents and combinations, and these compounds are present in amounts in the range from 1 million-1to 1.0 wt.% in relation to the composition for anti/anti-icing.

Protivovspenivayushchie substances presented which are SAG1000TM, Siltech E-2202TMAF-9020TMprotivovospalitel silicone DC 1520TMand cash equivalents present in amounts in the range from 1 million-1to 0.5 wt.% in relation to the composition for anti/ anti-icing.

The flame retardants can be selected from the group consisting of tricresol or benzotriazole, and they are present in amounts in the range from 1 million-1to 1.0 wt.% in relation to the composition for anti/anti-icing. The flame retardant is also used to further reduce the ignition temperature or flash composition for de-icing and anti-icing.

Regulators of water hardness can be selected from the group consisting of sodium salts of EDTA, sodium salt HEEDTA, tricresol, benzotriazole, sodium polyphosphates, sodium salt of NTA, sodium pyrophosphate, cash equivalents, and they are present in amounts in the range from 1 million-1to 1.0 wt.% in relation to the composition for anti/anti-icing.

Identifying components dyes, such as water-soluble dyes, which include dye type I - red-orange, type II - from colorless to pale yellow, and type IV - green, are present in quantities which

From observations it follows that this combination of ingredients when used mass ratios undoubtedly regulates the speed of diffusion of water into and through the thin layer of the mixture composition, whereby delayed the beginning and the development of freezing. In particular, the combination of non-ionic surfactants and surface-active polycarboxylate used in the composition, acts as a regulator of the rate of diffusion of water into and through the system for de-icing and anti-icing of the present invention.

The time required to make under conditions of precipitation was freezing on a certain surface, known as the time WSET, or it is usually called the "delay" time ("Holdover"). The stability spattered water (WSET), described in Appendix a to the technical terms for aerospace materials (AMS), the latest version 1428, is a globally recognized method of controlling and checking the time interval between the moment of application of the anti-icer and the beginning of state freezing.

As shown by experimental observations, any mixture of propylene glycol and/or ethylene glycol and water absorbs and scatters on the th, fast solidification. When diffusion is significantly slowed down, nephrolithotripsy water collects on the surface and freezes. When the glycol and water are added nonionic surfactant and emulsifier, they reduce the speed of diffusion (movement) of water into and through the liquid, and the time elapsing until the moment when it is re-freezing, increases significantly. If the material is thickened, as is known from the prior art, the time for freezing (WSET) increases due to the increasing volume of glycol. If the diffusion rate is adjusted, as in the present invention, then a thin film of the present invention shows significantly increased time for WSET.

The procedure for obtaining 1 kg of the mixture in each of the examples, the following.

Upon receipt of the mixture in example 1 take 1500-ml chemical beaker equipped with a mechanical stirrer, and load it with 185 g of water, and when the stirrer is added 1.84 g polycarboxylates emulsifier and then stirred for 1 h and Then in a glass add 550 g of propylene glycol and again stirred for 5 minutes As shown in the table.1, the mass percentage of propylene glycol is equal to 55. Then in a glass add 1,71 g of ethoxylated (3 mol is an add ethoxylated (12 mol) of Nonylphenol and stirred for 5 minutes Then pH (clearly) the mixture is brought to a value between 6 and 8 with potassium hydroxide.

Mixtures of examples 2 and 3 receive the same manner except that the second time the water is added in an amount corresponding changes in the composition. As shown in the table.1, the mass percentage of propylene glycol in example 2 is equal to 51, as in example 3 - 38.

Upon receipt of the mixture in example 4 take 1500-ml chemical beaker equipped with a mechanical stirrer, and load it with 447 g of water, and when the stirrer is added 2.3 g thickening polymer CarbopolTM1610 and then stirred for 2 hours, the Mixture is left to stand in covered glass during the night. The next day in a glass add 550 g of propylene glycol and stirred for 5 minutes As shown in the table.1, the mass percentage of propylene glycol is equal to 55. Then pH (clearly) the mixture is brought to a value between 6 and 8 with potassium hydroxide.

Mixtures of examples 5 and 6 received in the same way: in these cases, water is added in an amount corresponding changes in the composition. As shown in the table.1, the mass percentage of propylene glycol in example 5 is equal to 51, as in example 6 - 38.

Upon receipt of the mixture in example 7 take 1500-ml chemical glass, SN is pine oil and stirred for 10 minutes As shown in the table.1, the mass percentage of propylene glycol is equal to 51. Then in a glass add 475 g of water and stirred for 10 min.

Upon receipt of the mixture in example 8 take 1500-ml chemical beaker equipped with a mechanical stirrer, and load it with 510 g of propylene glycol and 490 g of water, and then stirred for 10 minutes. As shown in the table.1, the mass percentage of propylene glycol is equal to 51.

Upon receipt of the mixture in example 9 take 1500-ml chemical beaker equipped with a mechanical stirrer, and load it 195,63 g of water, and when the stirrer is added 1.84 g polycarboxylates emulsifier and then stirred for one hour. In a glass add 0.12 g ethoxylated (12 mol) of Nonylphenol and stirred for 5 minutes and Then in a glass add 800 grams of ethylene glycol and stirred for 5 minutes As shown in the table.3, the mass percentage of glycol is equal to 80. Then in a glass add 1,71 g of ethoxylated (3 moles) of op and stirred for 5 minutes Then pH (clearly) the mixture is brought to a value between 6 and 8 with potassium hydroxide.

Mixtures of examples 10-14 receive by dilution with water the mixture of example 9 to obtain a given percentage of the content is the Rimera 11 - 60, in the example 12 - 55, in example 13 to 50, and in example 14 - 35

Upon receipt of the mixture in example 15 take 1500-ml chemical beaker equipped with a mechanical stirrer, and load it with 185 g of water; and when the stirrer is added 1.84 g polycarboxylates emulsifier and then stirred for 1 h and Then in a glass add 100 g of propylene glycol and again stirred for 5 minutes and Then in a glass add 1,71 g of ethoxylated (3 moles) of op and stirred for 5 minutes and Then in a glass add 400 g of ethylene glycol and stirred for 5 minutes As shown in the table. 4, the percentage composition of the mixture in example 15 is 10 wt.% propylene glycol and 40 wt.% of ethylene glycol. Then the second time add water - 310,6 g with stirring for 5 minutes Then in a 1500-ml beaker add 0.12 g ethoxylated (12 mol) of Nonylphenol and stirred for 5 minutes Then pH (clearly) the mixture is brought to a value between 6 and 8 with potassium hydroxide.

Mixtures of examples 16-21 get in the same way, except that the used amounts of propylene glycol and ethylene glycol correspond to the percentage composition specified for each example. As shown in the table.4, the percentage composition of the mixture in the case of receive 20.0 wt.% of ethylene glycol; the mixture in example 18 includes 40.0 wt. % propylene glycol and 10.0 wt.% glycol; a mixture of example 19 includes 34,0 wt. % of propylene glycol and 1.0 wt.% glycol; a mixture of example 20 includes 1,0 wt. % propylene glycol and 34,0% by weight of of ethylene glycol; and the mixture in example 21 includes a 1.0 wt.% propylene glycol and 79,0 wt.% of ethylene glycol.

In the above table.1 examples 4 through 8 illustrate the composition for de-icing and anti-icing prior art. Examples 1, 2 and 3 illustrate the present invention. WSET for each example was carried out in accordance with the test procedure 1428 on the DMZ, and the results are summarized in table. 1. Mixtures of examples 1-8 were obtained as previously described, in accordance with the composition specified in table.1.

As shown in the table.1, examples 1, 2 and 3 illustrate the present invention and example 3 corresponds to the dilution of the mixture of example 2, 75:25; time WSET varies in the range from 80 to 140 minutes Examples 4, 5 and 6 illustrate prior art using polymer-thickener. The mixture is received with the content of propylene glycol as in examples 1, 2 and 3, but time WSET is only 25 to 35 minutes In example 7 is used pine oil to slow diffusion into the surface, and this is the result quickly - only 6 minutes Sample of example 2 with a viscosity of approximately 1000 SP, against 15000-55000 for examples 4, 5 and 6, has a score by WSET 140 min, which proves that the increase in latency is due to the unique composition of the present invention and is not associated with the viscosity.

The composition of the present invention does not depend on polymer thickeners. A unique system of surfactants of the present invention delays the onset of freezing, as shown below in the table.2

Two flat sheet aluminum about the size of ten (~10,2) cm for forty-five (~ of 45.7) cm (4"h") raise one edge so that the sheets amounted to an angle of 10owith a horizontal surface. On the first panel pour the sample of example 2, and the second panel pour the sample of example 5. After 5 minutes, measure the thickness of each liquid using casinomaster for liquid films. A liquid film of example 2 had a thickness of 20-22 mils, and a liquid film of example 5 had a thickness of 40 to 44 mil. Thus, in the case of example 2, about half the amount of fluid required to cover the surface, compared with the liquid of example 5, which shows that the performance characteristics are achieved due to unique to surfactants of the present invention is effective in the case of ethylene glycol, as in the case of propylene glycol, although the useful interval of the content of the glycol and the percentage of glycol in the case of the longest time WSET differ from corresponding figures for the composition with propylene glycol in a preferred variant embodiment of the invention. Examples 10-14 are cases of water dilution of the mixture of example 9. They show that, in the case of the present invention, liquid ethylene, as mentioned earlier propylene glycol, can be diluted with water and still save time increased by WSET.

As shown in the table. 4, examples 15-18 show that the surfactants of the present invention is effective in the case of mixtures of propylene glycol and ethylene glycol. Operational characteristics of mixtures containing in total, 50% of propylene - and ethylene glycol, are similar to the characteristics of the mixtures of examples with approximately 50% or propylene glycol, or ethylene glycol, are used separately. Therefore, it is expected that any examples that use one glycol or a mixture of propylene glycol and ethylene glycol in any proportion, will have similar performance characteristics. In table.4, examples 19-21, indicated a mixture limit for mn is Asano in table.4, the combined mixture of example 19 is to 35.0 wt. % 34,0% by weight of falls on propylene glycol and 1.0 wt.% for ethylene glycol, the combined mixture of example 20 is to 35.0 wt.%, 1.0 wt.% falls on propylene glycol and 34,0% by weight of on the glycol. The combined mixture of example 21 is 80,0 wt.%, 1.0 wt.% falls on propylene glycol and 79,0 wt.% on the glycol.

Accordingly, an advantage of the present invention is that it relates to improved liquid composition for de-icing and anti-icing, which is the time interval for WSET not less than 2 h when applied using conventional carriers for combat/anti-icing, and even if its capabilities are reduced when the use of non-special equipment, will give standard time on WSET 80 min, despite the reduction of its viscosity up to 70%.

Another advantage of the present invention is a chemical composition that provides a specific chemical mechanism delays the beginning of the re-freezing of water on the surface of the protective film of fluid for anti-icing when it is applied to the surfaces of the aircraft.

Another advantage nastojasih the us and the fluid volume.

Another advantage of the present invention is that an improved liquid composition for de-icing and anti-icing can be diluted with water while maintaining an increased delay time for at least 80 minutes.

Another advantage of the present invention is the ease of use and the ability of the liquid composition to spread and cover the entire surface, eliminating the need to apply a second and third coating to ensure continuous coverage, which may occur in the case of liquids prior art that are dependent on high viscosity and bulk viscosity to ensure adequate performance.

A wide range of modifications, changes and substitutions implied in the above description, and in some instances some features of the invention can be used without concurrent use of other features. Accordingly, the accompanying claims be construed broadly, respectively essence and scope of this invention.

1. Composition for de-icing and anti-icing surfaces of the aircraft, containing the idea of water as a liquid - media specified propylene glycol, in an amount of from 44,0 to 65,0 wt. %, (C) a first nonionic surfactant with LB in the range from 4 to 17, in the amount of 1 million-1to 0.5 wt. %. d) a second non-ionic surfactant with HLB in the range from 5 to 18, is present in an amount of from 1 million-1to 0.5 wt. % and the specified second non-ionic surfactant has an HLB of at least two (2) units higher than the specified first non-ionic surfactant, and has a molecular weight greater than the molecular weight of the first non-ionic surfactant; (e) an emulsifier in the form polycarbosilane compounds, present in an amount of from 1 million-1to 0.5 wt. %, (f) a pH regulator to maintain the pH of the specified composition in the range of from 6 to 10 present in an amount of from 1 million-1to 1.0 wt. % with respect to the specified composition.

2. The composition according to p. 1, where (a) a basic compound is present in an amount of from 51,0 52,0 to wt. %, (b) the diluent is present in an amount of from of 47.0 49.0 wt. %, (C) a first surfactant has a HLB in the range from 4 to 9 and is present in amount from 1 million-1to 0.5 wt. %, (d) the second surface is Ligator is present in an amount of 1 million-1to 0.5 wt. %.

3. The composition according to p. 1, where the first and second non-ionic surfactant is chosen from the group of substances with radicals consisting of alcohols, alkyl phenols, amines, fatty acids, block copolymers of propylene oxide, and block copolymers of ethylene oxide.

4. The composition according to p. 1, where the pH regulator selected from the group consisting of potassium hydroxide, sodium hydroxide, organic bases (amines, tricresol and benzotriazole.

5. The composition according to p. 1, having a pH value more than 7.

6. The composition according to p. 5, having a pH from 7,01 to 10.00.

7. The composition according to p. 1, having a pH value less than 7.

8. The composition according to p. 7, having a pH from 6.00 to 6.99.

9. The composition according to p. 1, optionally also containing anti-corrosive compound in an amount of 1 million-1to 1.0 wt. %.

10. The composition according to p. 9, where anti-corrosive compound selected from the group consisting of tricresol, benzotriazole, alkoxysilanes of butandiol, thiourea, propargilovyh alcohol, sodium nitrate and Butin-1,4-diol and combinations thereof.

11. The composition according to p. 1, additionally containing protivovspenivayushchie substance on the basis of silicone marejada fire retardant, present in an amount of from 1 million-1to 1.0 wt. %.

13. The composition according to p. 12, where the flame retardant is chosen from the group consisting of tricresol and benzotriazole.

14. The composition according to p. 1, additionally containing control water hardness present in an amount of from 1 million-1to 1.0 wt. %.

15. The composition according to p. 14, where the control water hardness selected from the group consisting of sodium ethylenediaminetetraacetate, hydroxyethylmethacrylate sodium, tricresol, benzotriazole, sodium polyphosphate, nitrilotriacetate sodium and sodium pyrophosphate.

16. The composition according to p. 1, additionally containing identifying water-soluble component is a dye present in an amount of from 10 billion-1to 0.1 wt. %.

17. The composition according to p. 16, where a water-soluble dye selected from the group consisting of a red-orange dye, dye from a colorless to pale yellow and green dye.

18. Composition for de-icing and anti-icing surfaces of the aircraft, containing a) primary connection, representing a glycol in an amount of from 35.0 to 80,0 wt. %, (b) a diluent in the form of water as a liquid is emesto with HLB in the range from 4 to 17, as many as 1 million-1to 0.5 wt. %, (d) a second non-ionic surfactant with HLB in the range from 5 to 18, is present in an amount of from 1 million-1to 0.5 wt. % and the specified second non-ionic surfactant has an HLB of at least two (2) units higher than the specified first non-ionic surfactant, and has a molecular weight greater than the molecular weight of the first non-ionic surfactant; (e) an emulsifier in the form of polycarbosilane compounds, present in an amount of from 1 million-1to 0.5 wt. %, (f) a pH regulator to maintain the pH of the specified composition in the range of from 6 to 10, where the specified pH regulator is present in an amount of 1 million-1to 1.0 wt. % with respect to the specified composition.

19. The composition according to p. 18 (a) basic compound is present in an amount of from 59,0 to 63.0 wt. %, (b) the diluent is present in an amount of from 37,0 41,0 to wt. %, (C) a first surfactant has a HLB in the range from 4 to 9 and is present in amount from 1 million-1to 0.5 wt. %, (d) a second surfactant has LB in the interval from 13 to 18 and is present in amount from 1 million-1to 0.5 wt. %, (e) emulsifier pnye surfactants are selected from the group of substances with radicals, consisting of alcohols, alkyl phenols, amines, fatty acids, block copolymers of propylene oxide, and block copolymers of ethylene oxide.

21. The composition according to p. 18, where the pH regulator selected from the group consisting of potassium hydroxide, sodium hydroxide, discalificata, organic bases (amines, tricresol and benzotriazole.

22. The composition according to p. 18, having a pH value more than 7.

23. The composition according to p. 22, having a pH from 7,01 to 10.00.

24. The composition according to p. 18, having a pH of less than 7.

25. The composition according to p. 24, having a pH from 6.00 to 6.99.

26. The composition according to p. 18, optionally containing anti-corrosive compound in an amount of 1 million-1to 1.0 wt. %.

27. The composition according to p. 26, where anti-corrosive compound selected from the group consisting of tricresol, benzotriazole, alkoxysilanes of butandiol, thiourea, propargilovyh alcohol, sodium nitrate and Butin-1,4-diol and combinations thereof.

28. The composition according to p. 18, optionally containing protivovspenivayushchie substance on the basis of silicone oil in an amount of 1 million-1to 0.5 wt. %.

29. The composition according to p. 18, optionally containing flame retardant is present in Kolichestvennaya and benzotriazole.

31. The composition according to p. 18, optionally containing control water hardness in the range from 1 million-1to 1.0 wt. %.

32. The composition according to p. 31, which control water hardness selected from the group consisting of sodium ethylenediaminetetraacetate, hydroxyethylmethacrylate sodium, tricresol, benzotriazole, sodium polyphosphate, nitrilotriacetate sodium and sodium pyrophosphate.

33. The composition according to p. 18, optionally containing water-soluble identifying component in an amount of 10 billion-1to 0.1 wt. %.

34. The composition according to p. 33, where a water-soluble dye selected from the group consisting of a red-orange dye, dye from a colorless to pale yellow and green dye.

35. Composition for de-icing and anti-icing on the surface of the aircraft, containing a) a combination of propylene glycol and ethylene glycol present in an amount of from 35.0 to 80,0 wt. %, where the concentration of propylene glycol is not greater than about 55 wt. % and the content of ethylene glycol does not exceed 79,9 wt. %, (b) a diluent in the form of water as a carrier liquid is propylene glycol, in an amount of from 19.5 to 65,0 wt. %, (C) a first nonionic surfactant STV with HLB in the range from 5 to 18 in number from 1 million-1to 0.5 wt. %, and the second non-ionic surfactant has an HLB of at least two units higher than the specified first non-ionic surfactant, and a molecular weight greater than the molecular weight of the first non-ionic surfactant; (e) an emulsifier in the form of polycarbosilanes connection number from 1 million-1to 0.5 wt. percent, and (f) a pH regulator to maintain a pH in the range from 6 to 10, where the specified pH regulator is present in an amount of 1 million-1to 1.0 wt. % with respect to the specified composition.

36. The composition according to p. 35, where (a) the main compounds present in amounts of from 45.0 to 65,0 wt. %, (b) the diluent is present in amounts of from 35.0 to 55.0 wt. %, (C) a first surfactant has a HLB in the range from 4 to 9 and is present in amount from 1 million-1to 0.5 wt. %, (d) a second surfactant has a HLB in the range from 13 to 18 and is present in amount from 1 million-1to 0.5 wt. %, (e) the emulsifier is present in an amount of 1 million-1to 0.5 wt. %.

37. The composition according to p. 35, where the first and second non-ionic surfactant is chosen from the group of substances with radicals consisting of alcohols, the x2">

38. The composition according to p. 35, where the pH regulator selected from the group consisting of potassium hydroxide, sodium hydroxide, organic bases (amines, tricresol and benzotriazole.

39. The composition according to p. 35, having a pH value more than 7.

40. The composition according to p. 39, having a pH from 7,01 to 10.00.

41. The composition according to p. 35, having a pH value less than 7.

42. The composition according to p. 41, having a pH from 6.00 to 6.99.

43. The composition according to p. 35, optionally containing anti-corrosive compound in an amount of 1 million-1to 1.0 wt. %.

44. The composition according to p. 43, where anti-corrosive compound selected from the group consisting of tricresol, benzotriazole, alkoxysilanes of butandiol, thiourea, propargilovyh alcohol, sodium nitrate and Butin-1,4-diol and combinations thereof.

45. The composition according to p. 35, optionally containing protivovspenivayushchie substance on the basis of silicone oil in an amount of 1 million-1to 0.5 wt. %.

46. The composition according to p. 35, optionally containing flame retardant in an amount of 1 million-1to 1.0 wt. %.

47. The composition according to p. 46, where the flame retardant is chosen from the group consisting of tricresol and benzotriazole.

48. Compo"ptx2">

49. The composition according to p. 48, where control water hardness selected from the group consisting of sodium ethylenediaminetetraacetate, hydroxyethylmethacrylate sodium, tricresol, benzotriazole, sodium polyphosphate, nitrilotriacetate sodium and sodium pyrophosphate.

50. The composition according to p. 35, optionally containing water-soluble identifying component dye in the amount of 10 billion-1to 0.1 wt. %.

51. The composition according to p. 50, where a water-soluble dye selected from the group consisting of a red-orange dye, dye from a colorless to pale yellow and green dye.

 

Same patents:

The invention relates to a preventive lubricants and can be used to prevent dust formation on temporary roads, mining quarrying, and to prevent sticking, primerzanie and freezing wet rocks to the walls of the mining and transport equipment in the mining industry, for example to protect surfaces rolling against primerzanie and blowing bulk materials such as coal, peat, etc

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

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The invention relates to the field of environmental protection from pollution by toxic substances used automotive antifreeze

The invention relates to the field of chemistry, namely, environmentally friendly de-icing reagents (AGR), intended for processing runways, tail bands, places of landing of passengers and other areas of aerodromes, where should be provided with safe operation during the period of ice formations
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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

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