DE1534173B2 - Chemical deicing agent for traffic areas or the like - Google Patents

Description

Although those on the basis of low molecular weight *> 5 flammable or combustible.

Claims (2)

ϊ 534 173 1 2 aliphatic alcohols and low molecular weight ali- claims; chemical de-icing agents built up against other chemical de-icing agents 1. Chemical de-icing agent for traffic icing agents the advantage of light biological flattening od, the like. Consisting of mixtures of S buildability in the. Wastewater and, compared to the saline aliphatic low molecular weight alcohols and anti-icing agents, the preference of the corrosion-aliphatic diols, which may be insoluble, their use is always based on the organic or organic corrosion inhibitory lack of inflammability and flammability, dissolved or contained in solid form Application against,
characterized in that the ge io The invention is therefore based on the object of mixing in each case so much water is added that with a chemical de-icing agent of the -0 ° C in question no ignition and burning possible to create the kind that is in the Application is problem-free, i.e. non-flammable. 2. Chemical de-icing agents according to the invention. characterized in that as all · - 15 dissolves that so much water is added to the mixture in each case Diols, glycol ethers or polyalkoxy glycols mean that at 0 ° C there is no ignition and no cooling are included. burning is possible. The invention is not limited to the use of low molecular weight aliphatic diols, Instead, it is advantageous to use water-miscible, uniform or non-uniform higher aliphatic diols, such as. B. polyalkoxy glycols or glycol ethers or their mixtures. The one with the invention The invention relates to a chemical de-icing achieved advantages are in the great application for traffic areas or the like, consisting of 25 manure security for de-icing in use Mixtures of aliphatic low molecular weight Al mixtures, which are used as such in the case of alcohols and aliphatic diols, at the given application temperatures not flammable or Otherwise inorganic or organic corrosion is inflammable, in particular consideration should be given to inhibitors are included. that when applying immediately another Such mixtures of aliphatic low-moiety 30 strong dilution by the melt water of the anlekula / en Alcohols and aliphatic diols can or thawed ice takes place. Surprisingly for de-icing traffic areas, such as take-off and unexpectedly for the specialist and landing strips of airfields, important roads are provided that the components of low objects, like bridges, intersections, freeway on- molecular, aliphatic alcohol, aliphatic rides, etc., can be used. 35 existing mixture of diol and water even at low Usually, such chemical development temperatures result in rapid thawing of the ice-cream layer on the surface to be de-iced or, if used beforehand, the spray and, if necessary, the subsequent formation of a brittle ice layer is prevented.
The ice that has formed or the meltwater that has formed is another, very considerable advantage of such the still corresponding amounts of the 40 alcohol-diol-water mixture sprayed on is the possibility Contains deicing agent, turned away. known corrosion inhibitors such as borates, It is already known to add such chemical phosphates, urea or other inorganic or icing agents based on low molecular weight organic compounds, since the water-alcohols and low molecular weight aliphatic di-content is large enough to dissolve such inhibitors, such as glycol, to manufacture. In doing so, these contain 45 to keep. This also applies to inorganic or organic chemical de-icing agents, corro- nic additives, if necessary, which inhibit the thawing of the ice layer, such as borax (sodium beneficial.
umtetraborate monohydrate). example 1 An extraordinarily great disadvantage of such two parts by weight of isopropanol and a chemical deicing agent by weight, which only consist of a low-molecular-weight alcohol and a low-molecular water. The resulting three-component aliphatic diol, optionally with a mixture, is ^{no longer flammable at 0 ° C.} or the addition of corrosion inhibitors consists, it is, flammable. that they may be inflammable when used - Example 2 are bar and flammable. 55 50 g of ethylene glycol monomethyl ether are with This applies above all to the use of such 50 g of ethanol (96%) mixed. The addition of 5 ° / o De-icing agent on busy intersections, water is sufficient to keep the resulting mixture at 0 ° Bridges, motorway entrances, which are no longer flammable or combustible Do not let traffic through for the purpose of spraying. Barriers may be impaired. On the other hand, 60 B e i s ρ i e 1 3 This has to be taken into account for runways, with Man preparing a mixture of 70 parts by weight -denen even after shortly before spraying isopropanol and 30 parts by weight of tetraethylene glycol Landing and take-off runways must be freely available. After adding 20 parts by weight of water is sen. the resulting mixture no longer exists at 0 °