DE19648716A1 - De-icing agents based on acetates and / or formates and method for melting snow and ice on traffic areas using this agent - Google Patents
De-icing agents based on acetates and / or formates and method for melting snow and ice on traffic areas using this agentInfo
- Publication number
- DE19648716A1 DE19648716A1 DE19648716A DE19648716A DE19648716A1 DE 19648716 A1 DE19648716 A1 DE 19648716A1 DE 19648716 A DE19648716 A DE 19648716A DE 19648716 A DE19648716 A DE 19648716A DE 19648716 A1 DE19648716 A1 DE 19648716A1
- Authority
- DE
- Germany
- Prior art keywords
- alkali metal
- agent
- ice
- deicing
- formate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002844 melting Methods 0.000 title claims description 5
- 230000008018 melting Effects 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 150000001242 acetic acid derivatives Chemical class 0.000 title description 3
- 150000004675 formic acid derivatives Chemical class 0.000 title description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 24
- -1 alkali metal acetate Chemical class 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910000318 alkali metal phosphate Inorganic materials 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 7
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims abstract description 4
- 239000004135 Bone phosphate Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 abstract description 11
- 239000011777 magnesium Substances 0.000 abstract description 11
- 238000010257 thawing Methods 0.000 abstract description 8
- 239000008187 granular material Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 3
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000004280 Sodium formate Substances 0.000 description 8
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 8
- 235000019254 sodium formate Nutrition 0.000 description 8
- 235000002639 sodium chloride Nutrition 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 239000004115 Sodium Silicate Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 235000019795 sodium metasilicate Nutrition 0.000 description 5
- 229910052911 sodium silicate Inorganic materials 0.000 description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 5
- 235000019798 tripotassium phosphate Nutrition 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229940044170 formate Drugs 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical class COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WFIZEGIEIOHZCP-UHFFFAOYSA-M potassium formate Chemical compound [K+].[O-]C=O WFIZEGIEIOHZCP-UHFFFAOYSA-M 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N ammonium carbonate Chemical class N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000011162 ammonium carbonates Nutrition 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 239000004281 calcium formate Substances 0.000 description 1
- 229940044172 calcium formate Drugs 0.000 description 1
- 235000019255 calcium formate Nutrition 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 1
- 239000011654 magnesium acetate Substances 0.000 description 1
- 235000011285 magnesium acetate Nutrition 0.000 description 1
- 229940069446 magnesium acetate Drugs 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052605 nesosilicate Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000004762 orthosilicates Chemical class 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229960004249 sodium acetate Drugs 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
- 235000011088 sodium lactate Nutrition 0.000 description 1
- 229940005581 sodium lactate Drugs 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
- C07C53/02—Formic acid
- C07C53/06—Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
- C07C53/08—Acetic acid
- C07C53/10—Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
Description
Die Erfindung betrifft ein Enteisungsmittel auf der Basis von Alkalimetallacetaten, Alkalimetallformiaten oder einer Mischung der beiden für Verkehrsflächen. Die Erfindung betrifft ferner ein Verfahren zum Schmelzen von Schnee und Eis auf Verkehrsflächen unter Verwendung dieses Mittels.The invention relates to a deicing agent based of alkali metal acetates, alkali metal formates or one Mix of the two for traffic areas. The invention also relates to a method for melting snow and Ice on traffic areas using this agent.
Schnee und/oder Eis auf Straßen, Radfahrwegen, Gehwegen, Brücken, Sportplätzen, Flugplätzen und dergleichen (im folgenden Verkehrsflächen genannt) führen zu einer wesentlichen Beeinträchtigung des Verkehrsablaufes und der Verkehrssicherheit. Es ist deshalb schon seit langem bekannt, auf solchen Flächen ein Mittel zum Schmelzen oder Auftauen von Schnee und Eis aufzubringen.Snow and / or ice on roads, bike paths, sidewalks, Bridges, sports fields, airfields and the like (hereinafter referred to as traffic areas) lead to a significant impairment of the traffic flow and Traffic safety. That's why it's been around for a long time known, a means for melting or on such surfaces Apply thawing snow and ice.
Die Forderungen, die ein Enteisungsmittel erfüllen sollte, sind sehr vielseitig. Die Materialien, aus denen die in Rede stehenden Flächen aufgebaut sind, beispielsweise Beton, dürfen durch das Enteisungsmittel nicht beschädigt oder gar zersetzt werden. Wesentlich ist ferner, daß eine korrodierende Wirkung auch auf Metalle ausgeschlossen ist. Da das Mittel ins Abwasser gelangen kann, ist die biologische Abbaubarkeit eine weitere Forderung. Wesentlich ist ferner, daß eine sehr rasche Auftauung erreicht wird. Von der wirtschaftlichen Seite her ist es schließlich notwendig, daß eine nur geringe Menge an Enteisungsmittel erforderlich ist und daß es wenig kostet. The requirements that a deicer should meet are very versatile. The materials from which the in Areas under discussion are built up, for example Concrete must not be damaged by the deicing agent or even be decomposed. It is also essential that a corrosive effect on metals is excluded. Since the agent can get into the wastewater, it is Biodegradability is another requirement. Essential is also that a very rapid thawing is achieved. After all, from an economic perspective necessary that only a small amount of deicing agent is required and that it costs little.
Im Stand der Technik sind zahlreiche Alkalimetall- und Erdalkalimetallsalze von anorganischen und organischen Säuren als Enteisungsmittel beschrieben, zum Beispiel Natriumchlorid, Calciumchlorid, Natriumformiat, Calciumformiat, Natriumacetat, Magnesiumacetat, Natriumlactat und dergleichen. Diese Enteisungsmittel, insbesondere die Acetate und Formiate, erfüllen zwar mehrere der oben erwähnten Forderungen, sie lassen aber bezüglich Korrosion zu wünschen übrig. So wirken sie vor allem auf Leichtmetalle wie Aluminium und Magnesium mehr oder weniger stark korrodierend, was im Hinblick auf Verkehrsmittel wie Autos, Motorräder, Flugzeuge und dergleichen besonders nachteilig ist.Numerous alkali metal and Alkaline earth metal salts of inorganic and organic Acids described as deicing agents, for example Sodium chloride, calcium chloride, sodium formate, Calcium formate, sodium acetate, magnesium acetate, Sodium lactate and the like. These deicers, in particular the acetates and formates, indeed several of the requirements mentioned above, but they leave to be desired regarding corrosion. This is how they act especially on light metals such as aluminum and magnesium or less corrosive to what Transportation such as cars, motorbikes, planes and the like is particularly disadvantageous.
Es sind bereits Versuche unternommen worden, die erwähnten Probleme mit Hilfe von Inhibitoren zu lösen. So wird in EP-A 0 375 214 ein flüssiges Enteisungsmittel beschrieben, das im wesentlichen aus 45 bis 60 Gew.-% von einem Alkalimetallacetat und/oder Alkalimetallformiat, 0,1 bis 0,4 Gew.-% von einem Alkalimetallphosphat, 0,2 bis 0,6 Gew.-% von einem Alkalimetallnitrit und Wasser als Rest auf 100 Gew.-% besteht, Gewichtsprozente bezogen auf das Gewicht des Enteisungsmittels. Die Inhibitorwirkung von Alkalimetallphosphat und Alkalimetallnitrit läßt aber noch zu wünschen übrig, insbesondere im Hinblick auf Magnesium; nachteilig ist ferner der Nitritgehalt.Attempts have been made to use the aforementioned Solve problems with inhibitors. So in EP-A 0 375 214 describes a liquid deicing agent, the essentially from 45 to 60 wt .-% of one Alkali metal acetate and / or alkali metal formate, 0.1 to 0.4% by weight of an alkali metal phosphate, 0.2 to 0.6% by weight of an alkali metal nitrite and water as the balance to 100 wt .-%, percentages by weight based on that Weight of the deicer. The inhibitory effect of Alkali metal phosphate and alkali metal nitrite still leaves to be desired, especially with regard to magnesium; the nitrite content is also disadvantageous.
In DE-A 40 34 217 wird ein flüssiges oder festes Enteisungsmittel auf der Basis von wasserlöslichen Alkalisalzen der Ameisensäure und/oder Essigsäure beschrieben, wobei das Korrosionsinhibitorsystem aus wasserlöslichen Polycarbonsäuren und wasserlöslichen Alkali- oder Ammoniumsilicaten und/oder Alkali- oder Ammoniumcarbonaten besteht. Dieses chlorid- und nitritfreie Enteisungsmittel soll Bauwerke aus Beton, Bitumen oder Gestein nicht angreifen und auch metallische Werkstoffe wie Eisen, Kupfer, Aluminium oder Zink nicht angreifen. Die antikorrosive Wirkung beruht auf der Kombination von einer wasserlöslichen Polycarbonsäure wie Bernsteinsäure, Citronensäure oder Weinsäure und einem wasserlöslichen Silicat und/oder Carbonat. Im Falle von Leichtmetallen läßt auch sie zu wünschen übrig.DE-A 40 34 217 describes a liquid or solid De-icing agents based on water-soluble Alkaline salts of formic acid and / or acetic acid described, wherein the corrosion inhibitor system from water-soluble polycarboxylic acids and water-soluble Alkali or ammonium silicates and / or alkali or Ammonium carbonates exist. This is chloride and nitrite free Deicing agent is said to be made of concrete, bitumen or Do not attack rock and metallic materials such as Do not attack iron, copper, aluminum or zinc. The anticorrosive effect is based on the combination of one water-soluble polycarboxylic acid such as succinic acid, Citric acid or tartaric acid and a water soluble Silicate and / or carbonate. In the case of light metals leaves they also left a lot to be desired.
Erwähnt sei noch US-A 4 803 007, worin ein Enteisungsmittel auf der Basis von Natriumchlorid beschrieben wird, wobei als Korrosionsinhibitor eine Mischung aus einem zweiwertigen Metallsalz und einem Alkalimetallpolyphosphat eingesetzt wird. Als divalente Metalle werden unter anderen Calcium, Magnesium und Barium und als Gegenionen Borate, Metasilicate und Sulfate genannt. Diese Inhibitorkombination wirkt vor allem einer Korrosion der Eisenmetalle entgegen, weniger aber der Korrosion von Leichtmetallen wie Magnesium.Mention should also be made of US-A 4 803 007, in which a deicing agent is described on the basis of sodium chloride, wherein as a corrosion inhibitor a mixture of one divalent metal salt and an alkali metal polyphosphate is used. Divalent metals are among others Calcium, magnesium and barium and as counterions borates, Called metasilicates and sulfates. This Inhibitor combination acts primarily against corrosion Ferrous metals, but less the corrosion of Light metals like magnesium.
Es wurde nun gefunden, daß eine Mischung aus Alkalimetallphosphaten und Alkalimetallsilicaten ein besonders wirksamer Leichtmetall-Korrosionsinhibitor ist für ein Enteisungsmittel auf der Basis von Alkalimetallsalzen der Ameisensäure und/oder Essigsäure.It has now been found that a mixture of Alkali metal phosphates and alkali metal silicates is particularly effective light metal corrosion inhibitor for a deicing agent based on Alkali metal salts of formic acid and / or acetic acid.
Das erfindungsgemäße Enteisungsmittel besteht im wesentlichen ausThe deicing agent according to the invention consists in essential
- a) 87 bis 99,45 Gew.-%, vorzugsweise 92 bis 97,9 Gew.-%, von einem Alkalimetallacetat und/oder Alkalimetallformiat,a) 87 to 99.45 wt .-%, preferably 92 to 97.9 wt .-%, of an alkali metal acetate and / or alkali metal formate,
- b) 0,5 bis 10 Gew.-%, vorzugsweise 2 bis 7 Gew.-%, von einem Alkalimetallsilicat undb) 0.5 to 10% by weight, preferably 2 to 7% by weight, of one Alkali metal silicate and
- c) 0,05 bis 3 Gew.-%, vorzugsweise 0,1 bis 1 Gew.-%, von einem Alkalimetallphosphat.c) 0.05 to 3 wt .-%, preferably 0.1 to 1 wt .-%, of an alkali metal phosphate.
Die Komponente a) ist vorzugsweise ein Alkalimetallformiat. Von den wasserlöslichen Alkalimetallformiaten und ebenso -acetaten sind jene des Natriums und Kaliums bevorzugt. Die Komponente a) ist also vorzugsweise ein Natriumformiat und/oder Kaliumformiat.Component a) is preferably an alkali metal formate. Of the water-soluble alkali metal formates and likewise Acetates are preferred those of sodium and potassium. The Component a) is therefore preferably a sodium formate and / or potassium formate.
Die Komponente b) ist ein wasserlösliches Alkalimetallsilicat, wobei das Alkalimetall wiederum vorzugsweise Natrium oder Kalium ist. Geeignete Vertreter sind die Orthosilicate (mono-, di-, tri- und tetrabasisch), Disilicate bis Tetrasilicate und/oder die wasserlöslichen Metasilicate, die bevorzugt sind.Component b) is a water-soluble Alkali metal silicate, the alkali metal in turn is preferably sodium or potassium. Suitable representatives are the orthosilicates (mono-, di-, tri- and tetrabasic), Disilicate to tetrasilicate and / or the water-soluble Metasilicates that are preferred.
Die Komponente c) ist ein wasserlösliches Alkalimetallsalz der Phosphorsäure. Sie kann ein mono-, di- oder tribasisches Alkalimetallphosphat sein, wobei das Alkalimetall vorzugsweise Natrium oder Kalium ist.Component c) is a water-soluble alkali metal salt of phosphoric acid. It can be a mono-, di- or tribasic Be alkali metal phosphate, the alkali metal is preferably sodium or potassium.
Die Herstellung des erfindungsgemäßen Enteisungsmittels erfolgt durch Zusammenmischen der flüssigen oder festen Komponenten. Das Enteisungsmittel kann also in fester Form, zum Beispiel als Pulver- oder Granulat, oder als wäßrige Lösung eingesetzt werden. Die Menge der drei und gegebenenfalls weiteren zweckmäßigen Komponenten im wäßrigen Enteisungsmittel (Gesamtkonzentration) kann innerhalb weiter Grenzen variieren. Sie richtet sich vor allem nach der Löslichkeit der Komponenten im Wasser (es soll eine im wesentliche klare Lösung vorliegen). Mit einer konzentrierteren Lösung wird man eine geringere Menge benötigen, um Eis und/oder Schnee aufzutauen, als mit einer weniger konzentrierten. Die bevorzugte Konzentration liegt demnach bei 15 bis 70 Gew.-%, vorzugsweise 25 bis 60 Gew.-%, Gewichtsprozente bezogen auf das Gewicht der Lösung. Der pH-Wert des wäßrigen Enteisungsmittels liegt im allgemeinen bei 7 bis 10. Sofern der genannte pH-Wert nach dem Zusammenmischen der Komponenten nicht ohnehin vorliegt, wird man ihn durch Zugabe von vorzugsweise einem Alkalimetallhydroxid wie Natrium- oder Kaliumhydroxid auf den gewünschten Wert einstellen. The preparation of the deicing agent according to the invention is done by mixing the liquid or solid together Components. The deicing agent can therefore be in solid form, for example as powder or granules, or as aqueous Solution are used. The set of three and optionally other useful components in aqueous Deicing agent (total concentration) can continue within Limits vary. It depends primarily on the Solubility of the components in water (there should be a essential clear solution). With a more concentrated solution you will get a smaller amount need to thaw ice and / or snow than with one less concentrated. The preferred concentration is accordingly at 15 to 70% by weight, preferably 25 to 60% by weight, Percentages by weight based on the weight of the solution. Of the The pH of the aqueous deicing agent is in general at 7 to 10. If the pH mentioned after Mixing the components is not present anyway one by adding preferably one Alkali metal hydroxide such as sodium or potassium hydroxide set the desired value.
Das erfindungsgemäße Verfahren zum Schmelzen von Schnee und Eis auf Verkehrsflächen ist dadurch gekennzeichnet, daß eine wirksame Menge des beschriebenen Enteisungsmittels (in fester oder flüssiger Form) auf der zu behandelnden Verkehrsfläche aufgebracht wird, das heißt eine solche Menge, daß die angestrebte Beseitigung von Eis und/oder Schnee erreicht wird. Diese Menge hängt vor allem von der Außentemperatur und der vorhandenen Eis- und/oder Schneemenge ab und liegt im allgemeinen bei 10 bis 100 g pro m² eis- und/oder schneebedeckter Fläche. Das Aufbringen des flüssigen Enteisungsmittels kann zum Beispiel mit Hilfe der üblichen Sprühfahrzeuge durchgeführt werden.The inventive method for melting snow and Ice on traffic areas is characterized in that a effective amount of the deicing agent described (in solid or liquid form) on the one to be treated Traffic area is applied, that is, such Amount that the intended removal of ice and / or Snow is reached. This amount mainly depends on the Outside temperature and the existing ice and / or Amount of snow and is generally from 10 to 100 g per m² of ice and / or snow covered area. The Application of the liquid deicing agent can for example with the help of the usual spray vehicles.
Das erfindungsgemäße Enteisungsmittel besitzt eine Reihe von Vorteilen. So erfüllt es die eingangs genannten Forderungen und weist neben kurzer Auftauzeit auch eine unerwartet hohe Inhibierung der Metallkorrosion, insbesondere von Magnesium, auf. Dies resultiert offensichtlich aus der Kombination der genannten Phosphate und Silicate in einer jeweils bestimmten Menge und daraus, daß dieses Inhibitorsystem gerade im Falle von Alkalimetallacetaten und/oder -formiaten hochwirksam ist. Das erfindungsgemäße Enteisungsmittel ist chlorid- und nitritfrei und auch für Flugzeugverkehrsflächen wie Start- und Landebahnen, Abstellplätze, Busrouten und dergleichen besonders geeignet. Es wird vorzugsweise in fester Form (Pulver, Granulat, Körnchen und dergleichen) eingesetzt.The deicing agent according to the invention has a number of Advantages. So it fulfills the requirements mentioned at the beginning and, in addition to a short thawing time, it also has an unexpectedly high one Inhibition of metal corrosion, especially magnesium, on. This obviously results from the combination of the mentioned phosphates and silicates in a particular one Amount and from the fact that this inhibitor system just in the case of alkali metal acetates and / or formates highly effective is. The deicing agent according to the invention is chloride and nitrite free and also for air traffic areas such as Runways, parking spaces, bus routes and the like particularly suitable. It is preferably in solid form (powder, granules, granules and the like) used.
Die Erfindung wird nun anhand von erfindungsgemäßen Beispielen und Vergleichsbeispielen noch näher erläutert.The invention is now based on the invention Examples and comparative examples explained in more detail.
Die Enteisungsmittel der nachstehenden erfindungsgemäßen Beispiele 1 bis 5 und der Vergleichsbeispiele 1 bis 3 wurden durch Mischen der Komponenten hergestellt. Die angegebenen Prozentmengen der einzelnen Komponenten sind Gewichtsprozente. The deicing compositions of the invention below Examples 1 to 5 and Comparative Examples 1 to 3 were made by mixing the components. The specified Percentages of the individual components are Percentages by weight.
97,8% Natriumformiat
2,0% Natriummetasilicat
0,2% Trikaliumphosphat97.8% sodium formate
2.0% sodium metasilicate
0.2% tripotassium phosphate
92,0% Kaliumformiat
7,0% Natriummetasilicat
1,0% Trikaliumphosphat92.0% potassium formate
7.0% sodium metasilicate
1.0% tripotassium phosphate
90,0% Natriumformiat
8,0% Kaliummetasilicat
2,0% Trikaliumphosphat90.0% sodium formate
8.0% potassium metasilicate
2.0% tripotassium phosphate
96,5% Natriumformiat
0,5% Natriummetasilicat
3,0% Trinatriumphosphat96.5% sodium formate
0.5% sodium metasilicate
3.0% trisodium phosphate
87,0% Natriumformiat
10,0% Natriummetasilicat
3,0% Dikaliumhydrogenphosphat
87.0% sodium formate
10.0% sodium metasilicate
3.0% dipotassium hydrogen phosphate
97,8% Natriumformiat
2,0% Calciummetasilicat
0,2% Trikaliumphosphat97.8% sodium formate
2.0% calcium metasilicate
0.2% tripotassium phosphate
99,0% Natriumformiat
0,5% Natriummetasilicat
0,5% Citronensäure99.0% sodium formate
0.5% sodium metasilicate
0.5% citric acid
97,8% Natriumchlorid
2,0% Calciummetasilicat
0,2% Trikaliumphosphat97.8% sodium chloride
2.0% calcium metasilicate
0.2% tripotassium phosphate
Die Enteisungsmittel der Beispiele 1 bis 5 und der Vergleichsbeispiele 1 bis 3 wurden bezüglich Magnesiumkorrosion getestet. Der Test erfolgte nach ASTM F483 (ASTM = American Society for Testing and Materials). Dabei wird der gewogene Prüfkörper in das zu prüfende Enteisungsmittel, das auf einer Temperatur von 35°C gehalten wird, 24 Stunden lang bei Normaldruck eingetaucht, worauf wiederum sein Gewicht bestimmt wird. Das Ergebnis des Korrosionstestes wird als Gewichtsdifferenz der beiden Gewichtsbestimmungen in Milligramm pro cm² Prüfkörper pro 24 Stunden angegeben. Der Test wurde mit Magnesium AMS 4375 (chromatiert) und mit 15 gew.%igen wäßrigen Lösungen der angegebenen Enteisungsmittel durchgeführt. Die Ergebnisse sind in der nachstehenden Tabelle zusammengefaßt und zeigen, daß die erfindungsgemäßen Enteisungsmittel bezüglich Magnesiumkorrosion sehr gut inhibiert sind. Was die Auftauzeit der erfindungsgemäßen Enteisungsmittel betrifft, so erfüllen sie das geforderte schnelle Auftauen von Eis und Schnee. Die erfindungsgemäßen Enteisungsmittel besitzen also eine überraschend hohe Inhibierung bezüglich Magnesiumkorrosion und die geforderte kurze Auftauzeit.The deicing compositions of Examples 1 to 5 and Comparative Examples 1 to 3 were referenced Magnesium corrosion tested. The test was carried out after ASTM F483 (ASTM = American Society for Testing and Materials). The weighed test specimen is placed in the testing de-icing agent operating at a temperature of 35 ° C is maintained for 24 hours at normal pressure immersed, whereupon its weight is determined. The The result of the corrosion test is the weight difference two weight determinations in milligrams per cm² test specimen specified per 24 hours. The test was made with magnesium AMS 4375 (chromated) and with 15 wt.% Aqueous solutions of the specified deicing agents. The Results are summarized in the table below and show that the deicing agents according to the invention inhibited very well with regard to magnesium corrosion. What the thawing time of the deicing agents according to the invention concerns, they fulfill the required rapid thawing of ice and snow. The deicing compositions according to the invention therefore have a surprisingly high inhibition with regard to Magnesium corrosion and the required short thawing time.
Claims (4)
- a) 87 bis 99,45 Gew.-% von einem Alkalimetallacetat oder einem Alkalimetallformiat oder einer Mischung davon,
- b) 0,5 bis 10 Gew.-% von einem Alkalimetallsilicat und
- c) 0,05 bis 3 Gew.-% von einem Alkalimetallphosphat.
- a) 87 to 99.45% by weight of an alkali metal acetate or an alkali metal formate or a mixture thereof,
- b) 0.5 to 10 wt .-% of an alkali metal silicate and
- c) 0.05 to 3 wt .-% of an alkali metal phosphate.
- a) 92 bis 97,9 Gew.-% von einem Alkalimetallacetat oder einem Alkalimetallformiat oder einer Mischung davon,
- b) 2 bis 7 Gew.-% von einem Alkalimetallsilicat und
- c) 0,1 bis 1 Gew.-% von einem Alkalimetallphosphat.
- a) 92 to 97.9% by weight of an alkali metal acetate or an alkali metal formate or a mixture thereof,
- b) 2 to 7 wt .-% of an alkali metal silicate and
- c) 0.1 to 1 wt .-% of an alkali metal phosphate.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19648716A DE19648716A1 (en) | 1996-06-07 | 1996-11-25 | De-icing agents based on acetates and / or formates and method for melting snow and ice on traffic areas using this agent |
| CA002257312A CA2257312C (en) | 1996-06-07 | 1997-05-30 | Deicing composition based on acetates and/or formates, and method of melting snow and ice on traffic areas with the aid of said composition |
| DE59703601T DE59703601D1 (en) | 1996-06-07 | 1997-05-30 | DEFROSTING AGENTS BASED ON ACETATES AND / OR FORMATS AND METHODS FOR MELTING SNOW AND ICE ON TRAFFIC AREAS WITH THE MEANS OF THIS MEANS |
| EP97925020A EP0902817B1 (en) | 1996-06-07 | 1997-05-30 | De-/antiicing agent based on acetates and/or formates, and process for melting, using said agent, snow and ice on areas for traffic |
| US09/194,932 US6059989A (en) | 1996-06-07 | 1997-05-30 | Deicing composition based on acetates and/or formates, and method for melting snow and ice on traffic areas with the aid of said composition |
| PCT/EP1997/002810 WO1997047703A1 (en) | 1996-06-07 | 1997-05-30 | Defrosting agent based on acetates and/or formates, and process for melting, using said agent, snow and ice on areas for traffic |
| AU30306/97A AU3030697A (en) | 1996-06-07 | 1997-05-30 | Defrosting agent based on acetates and/or formates, and process for melting, using said agent, snow and ice on areas for traffic |
| JP10501125A JP2000511958A (en) | 1996-06-07 | 1997-05-30 | Deicing agent based on acetate and / or formate, and method for melting snow and ice in traffic areas using this agent |
| AT97925020T ATE201437T1 (en) | 1996-06-07 | 1997-05-30 | DE-ICING AGENT BASED ON ACETATES AND/OR FORMIATES AND METHOD FOR MELTING SNOW AND ICE ON TRAFFIC SURFACES USING THIS AGENT |
| DK97925020T DK0902817T3 (en) | 1996-06-07 | 1997-05-30 | De-icing agent on the basis of acetates and / or formates, as well as the process of melting ace and ice on traffic areas by means of this agent |
| NO19985525A NO321345B1 (en) | 1996-06-07 | 1998-11-26 | Detergent based on acetates and / or formats, and use of same for melting, using said agent, snow and ice in traffic areas |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19622857 | 1996-06-07 | ||
| DE19648716A DE19648716A1 (en) | 1996-06-07 | 1996-11-25 | De-icing agents based on acetates and / or formates and method for melting snow and ice on traffic areas using this agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19648716A1 true DE19648716A1 (en) | 1997-12-11 |
Family
ID=7796372
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19648716A Withdrawn DE19648716A1 (en) | 1996-06-07 | 1996-11-25 | De-icing agents based on acetates and / or formates and method for melting snow and ice on traffic areas using this agent |
| DE59703601T Expired - Fee Related DE59703601D1 (en) | 1996-06-07 | 1997-05-30 | DEFROSTING AGENTS BASED ON ACETATES AND / OR FORMATS AND METHODS FOR MELTING SNOW AND ICE ON TRAFFIC AREAS WITH THE MEANS OF THIS MEANS |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE59703601T Expired - Fee Related DE59703601D1 (en) | 1996-06-07 | 1997-05-30 | DEFROSTING AGENTS BASED ON ACETATES AND / OR FORMATS AND METHODS FOR MELTING SNOW AND ICE ON TRAFFIC AREAS WITH THE MEANS OF THIS MEANS |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE19648716A1 (en) |
| RU (1) | RU2172332C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998032811A1 (en) * | 1997-01-23 | 1998-07-30 | Clariant Gmbh | Corrosion-inhibited de-icing agent |
| DE19845490A1 (en) * | 1998-10-02 | 2000-04-13 | Clariant Gmbh | Process for melting snow and / or ice and a deicing agent containing sodium formate and sodium chloride |
| RU2451053C2 (en) * | 2006-05-05 | 2012-05-20 | Даниско А/С | Substance composition and method of melting ice and preventing slipperiness and use of betaine to melt ice and preventing slipperiness |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10160724B4 (en) * | 2001-12-11 | 2006-04-27 | Clariant Gmbh | De-icing agent and method for melting snow and ice |
| RU2283335C1 (en) * | 2005-06-08 | 2006-09-10 | Общество с ограниченной ответственностью "Завод полимеров Кирово-Чепецкого химического комбината" (ООО "Завод полимеров КЧХК") | Antiice composition and a method for preparing the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5127954A (en) * | 1987-12-17 | 1992-07-07 | Domtar Inc. | Corrosion inhibiting systems, products containing residual amounts of such systems, and methods therefor |
| GB8829701D0 (en) * | 1988-12-20 | 1989-02-15 | Bp Chem Int Ltd | Deicing compositions |
| AT394199B (en) * | 1989-11-10 | 1992-02-10 | Lang Chem Tech Prod | FREEZER PROTECTOR AND ICE SOLVENT CONTAINING POLYCARBONIC ACIDS |
| DE4034792A1 (en) * | 1990-11-02 | 1992-05-07 | Hoechst Ag | LIQUID DE-CLEANER BASED ON ACETATES AND METHOD FOR MELTING SNOW AND ICE ON TRAFFIC AREAS WITH THE MEANS OF THIS MEANS |
| GB9100217D0 (en) * | 1991-01-05 | 1991-02-20 | Bp Chem Int Ltd | Deicing compositions |
| US5350533A (en) * | 1993-01-26 | 1994-09-27 | General Atomics International Services Corporation | Pavement deicer compositions |
-
1996
- 1996-11-25 DE DE19648716A patent/DE19648716A1/en not_active Withdrawn
-
1997
- 1997-05-30 DE DE59703601T patent/DE59703601D1/en not_active Expired - Fee Related
- 1997-05-30 RU RU99100294/04A patent/RU2172332C2/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998032811A1 (en) * | 1997-01-23 | 1998-07-30 | Clariant Gmbh | Corrosion-inhibited de-icing agent |
| US5922241A (en) * | 1997-01-23 | 1999-07-13 | Clariant Gmbh | Corrosion-inhibited deicing composition based on alkali metal and/or alkaline earth metal halides, and method of melting snow and ice on traffic areas using the composition |
| DE19845490A1 (en) * | 1998-10-02 | 2000-04-13 | Clariant Gmbh | Process for melting snow and / or ice and a deicing agent containing sodium formate and sodium chloride |
| DE19845490C2 (en) * | 1998-10-02 | 2003-11-20 | Clariant Gmbh | Process for melting snow and / or ice and a deicing agent containing sodium formate and sodium chloride |
| RU2451053C2 (en) * | 2006-05-05 | 2012-05-20 | Даниско А/С | Substance composition and method of melting ice and preventing slipperiness and use of betaine to melt ice and preventing slipperiness |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2172332C2 (en) | 2001-08-20 |
| DE59703601D1 (en) | 2001-06-28 |
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