WO1998032811A1 - Korrosionsinhibiertes enteisungsmittel - Google Patents
Korrosionsinhibiertes enteisungsmittel Download PDFInfo
- Publication number
- WO1998032811A1 WO1998032811A1 PCT/EP1998/000050 EP9800050W WO9832811A1 WO 1998032811 A1 WO1998032811 A1 WO 1998032811A1 EP 9800050 W EP9800050 W EP 9800050W WO 9832811 A1 WO9832811 A1 WO 9832811A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkali metal
- component
- alkaline earth
- deicing
- corrosion
- Prior art date
Links
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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
- C23F11/187—Mixtures of inorganic inhibitors
- C23F11/188—Mixtures of inorganic inhibitors containing phosphates
Definitions
- the invention relates to a corrosion - inhibited deicing agent based on
- Alkali metal halides or alkaline earth metal halides or a mixture thereof are Alkali metal halides or alkaline earth metal halides or a mixture thereof.
- the invention further relates to a method for melting snow and ice
- Traffic areas Snow and / or ice on roads, cycle 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. It has therefore long been known to apply a means for melting or thawing snow and ice to such surfaces.
- alkali and alkaline earth metal salts of inorganic or organic acids are described as deicing agents in the prior art, for example the salts of hydrohalic acids such as sodium chloride and calcium chloride and the salts of formic acid or acetic acid such as sodium formate, calcium formate, sodium acetate and magnesium acetate.
- hydrohalic acids such as sodium chloride and calcium chloride
- formic acid or acetic acid such as sodium formate, calcium formate, sodium acetate and magnesium acetate.
- sodium chloride and calcium chloride in particular are available in large quantities, cheaply and also very effectively in thawing and melting ice and snow.
- the deicing agent according to the invention essentially consists of a) 87 to 99.45% by weight, preferably 92 to 97.9% by weight, of an alkali metal halide and / or alkaline earth metal halide, b) 0.5 to 10% by weight, preferably 2 to 7% by weight of an alkali metal silicate and c) 0.05 to 3% by weight, preferably 0.1 to 1% by weight of an alkali metal phosphate,
- Component a) is preferably an alkali metal and / or alkaline earth metal chloride.
- the alkali metal is preferably sodium or potassium and the alkaline earth metal is calcium or magnesium. Of the water-soluble alkali and alkaline earth metal halides, the former are preferred.
- Component a) is accordingly preferably NaCl or CaCl 2 or a mixture thereof and particularly preferably NaCl.
- Component b) is a water-soluble alkali metal silicate, the alkali metal again preferably being sodium or potassium.
- Suitable representatives are the orthosilicates (mono-, di-, tri- and tetrabasic), disilicates to tetrasilicates and / or the water-soluble metasilicates, which are preferred.
- Component c) is a water-soluble alkali metal salt of phosphoric acid. It can be a mono-, di- or tribasic alkali metal phosphate, whereby the Alkali metal is preferably sodium or potassium.
- the deicing agent according to the invention is produced by mixing the liquid or solid components together.
- the mixing of the solid components can be improved by compacting or by dissolving the components beforehand and then spray drying.
- the deicing agent can thus be used in solid form, for example as a powder or granulate, or as an aqueous solution.
- the amount of the three and optionally further expedient components in the aqueous deicing agent (total concentration) can vary within wide limits. It depends primarily on the solubility of the components in water. There should be an essentially clear solution.
- the preferred concentration is 25 to 60% by weight, percentages by weight based on the weight of the solution. Concentrations that are at or close to the eutectic point are preferred in order to achieve a high level of frost protection.
- the pH of the aqueous deicing composition is generally from 7 to 10. If the pH mentioned does not exist after the components have been mixed together, it will be adjusted to the desired value by adding preferably an alkali metal hydroxide such as sodium
- the process according to the invention for melting snow and ice on traffic areas is characterized in that an effective amount of the deicing agent described (in solid or liquid form) is applied to the traffic area to be treated, that is to say an amount such that the desired removal of ice and / or snow is reached.
- This amount depends primarily on the outside temperature and the amount of ice and / or snow present and is generally 10 to 100 g per m 2 of ice and / or snow-covered area, based on solids.
- the liquid deicing agent can be applied, for example, with the aid of conventional spray vehicles.
- the solid deicing agent can be applied with conventional spreading vehicles. The simultaneous use of liquid and solid agents is particularly effective.
- the deicing agent according to the invention also has an unexpectedly high inhibition of metal corrosion, in particular steel corrosion. This obviously results from the combination of the specified phosphates and silicates in a certain amount in each case and from the fact that this inhibitor system is particularly effective in the case of alkali metal and / or alkaline earth metal halides.
- the deicing compositions of Examples 1 to 4 and Comparative Experiments 1 to 4 are tested for steel corrosion.
- the weighed test specimen is a ground and polished steel plate measuring 2.5 x 5.0 x 0.1 cm (steel C 45, corresponding to C 4130 Mil-S-18729).
- the test specimen is placed in the deicing agent to be tested so that it is completely immersed.
- the temperature of the test arrangement is kept at 35 ° C.
- the test specimen is removed at specified intervals, brushed, rinsed and dried in accordance with ASTM F 483 and then weighed.
- the change in weight, usually a removal, is given in the examples as mg / cm 2 per 24 hours.
- the test specimens are also assessed visually. example 1
- the results of the steel corrosion tests with and without inhibition are summarized in the following table.
- the indicated removal values are mean values from two identical test series.
- the test specimens from Examples 1 to 4 only showed tarnishing colors, but no rust.
- rapid rust formation occurs with the non-inhibited NaCI solutions and slower rust formation with non-inhibited CaCI 2 solutions.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002278529A CA2278529A1 (en) | 1997-01-23 | 1998-01-07 | Corrosion-inhibited de-icing agent |
EP98907928A EP0963423A1 (de) | 1997-01-23 | 1998-01-07 | Korrosionsinhibiertes enteisungsmittel |
AU66131/98A AU6613198A (en) | 1997-01-23 | 1998-01-07 | Corrosion-inhibited de-icing agent |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702242A DE19702242A1 (de) | 1997-01-23 | 1997-01-23 | Korrosionsinhibiertes Enteisungsmittel auf der Basis von Alkalimetall- und/oder Erdalkalimetallhalogeniden und Verfahren zum Schmelzen von Schnee und Eis auf Verkehrsflächen mit Hilfe dieses Mittels |
DE19702242.1 | 1997-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998032811A1 true WO1998032811A1 (de) | 1998-07-30 |
Family
ID=7818098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/000050 WO1998032811A1 (de) | 1997-01-23 | 1998-01-07 | Korrosionsinhibiertes enteisungsmittel |
Country Status (6)
Country | Link |
---|---|
US (1) | US5922241A (de) |
EP (1) | EP0963423A1 (de) |
AU (1) | AU6613198A (de) |
CA (1) | CA2278529A1 (de) |
DE (1) | DE19702242A1 (de) |
WO (1) | WO1998032811A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19845490C2 (de) * | 1998-10-02 | 2003-11-20 | Clariant Gmbh | Verfahren zum Schmelzen von Schnee und/oder Eis und ein Enteisungsmittel, enthaltend Natriumformiat und Natriumchlorid |
US6503305B1 (en) | 2000-05-18 | 2003-01-07 | Hammond Group, Inc. | Non-toxic corrosion inhibitor |
US6495063B1 (en) | 2001-08-31 | 2002-12-17 | Clearwater, Inc. | Treating coal and other piled materials to inhibit freeze binding |
US6569348B1 (en) | 2001-08-31 | 2003-05-27 | Clearwater, Inc. | Treating coal and other piled materials to inhibit freeze-binding |
WO2003033614A1 (en) * | 2001-10-16 | 2003-04-24 | Mks Marmara Entegre Kimya San. A.S. | A novel deicing composition |
JP4598828B2 (ja) * | 2004-08-09 | 2010-12-15 | シルバーブルック リサーチ ピーティワイ リミテッド | 耐光性が向上した合成に好適な水分散性ir染料 |
CA2725367C (en) * | 2008-06-09 | 2018-01-23 | Sears Petroleum & Transport Corporation & Sears Ecological Applications Co., Llc | Anticorrosive composition |
RU2604214C2 (ru) * | 2015-03-04 | 2016-12-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2597100C1 (ru) * | 2015-03-04 | 2016-09-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2604213C2 (ru) * | 2015-03-04 | 2016-12-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2603156C2 (ru) * | 2015-03-04 | 2016-11-20 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2583960C1 (ru) * | 2015-03-04 | 2016-05-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2596782C1 (ru) * | 2015-03-04 | 2016-09-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2583816C1 (ru) * | 2015-03-04 | 2016-05-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2576597C1 (ru) * | 2015-03-04 | 2016-03-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2604033C2 (ru) * | 2015-03-04 | 2016-12-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2596779C1 (ru) * | 2015-03-04 | 2016-09-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2603168C2 (ru) * | 2015-03-04 | 2016-11-20 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2596783C1 (ru) * | 2015-03-04 | 2016-09-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2577259C1 (ru) * | 2015-03-04 | 2016-03-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2583958C1 (ru) * | 2015-03-04 | 2016-05-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2596780C1 (ru) * | 2015-03-04 | 2016-09-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
RU2583814C1 (ru) * | 2015-03-04 | 2016-05-10 | Артем Юрьевич Чайка | Способ получения твердого противогололедного материала на основе пищевой поваренной соли и кальцинированного хлорида кальция (варианты) |
DE102015214249A1 (de) | 2015-07-28 | 2017-02-02 | Jan Kannegießer | Flüssiges enteisungsmittel und verfahren zu dessen herstellung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2161522A1 (de) * | 1970-12-22 | 1972-07-13 | Vysoka Skola Chem Tech | Auftausalz mit einem Korrosionsinhibitor |
US4803007A (en) * | 1987-10-16 | 1989-02-07 | Garber Frank R | Corrosion inhibitor for salt-based deicing compositions |
US5127954A (en) * | 1987-12-17 | 1992-07-07 | Domtar Inc. | Corrosion inhibiting systems, products containing residual amounts of such systems, and methods therefor |
US5350533A (en) * | 1993-01-26 | 1994-09-27 | General Atomics International Services Corporation | Pavement deicer compositions |
DE19648716A1 (de) * | 1996-06-07 | 1997-12-11 | Hoechst Ag | Enteisungsmittel auf der Basis von Acetaten und/oder Formiaten und Verfahren zum Schmelzen von Schnee und Eis auf Verkehrsflächen mit Hilfe dieses Mittels |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5730895A (en) * | 1997-02-13 | 1998-03-24 | Agrinutrients Technology Group, Inc. | Carboxylate coated chloride salt ice melters |
-
1997
- 1997-01-23 DE DE19702242A patent/DE19702242A1/de not_active Withdrawn
-
1998
- 1998-01-07 WO PCT/EP1998/000050 patent/WO1998032811A1/de not_active Application Discontinuation
- 1998-01-07 AU AU66131/98A patent/AU6613198A/en not_active Abandoned
- 1998-01-07 EP EP98907928A patent/EP0963423A1/de not_active Withdrawn
- 1998-01-07 CA CA002278529A patent/CA2278529A1/en not_active Abandoned
- 1998-01-21 US US09/009,805 patent/US5922241A/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2161522A1 (de) * | 1970-12-22 | 1972-07-13 | Vysoka Skola Chem Tech | Auftausalz mit einem Korrosionsinhibitor |
US4803007A (en) * | 1987-10-16 | 1989-02-07 | Garber Frank R | Corrosion inhibitor for salt-based deicing compositions |
US5127954A (en) * | 1987-12-17 | 1992-07-07 | Domtar Inc. | Corrosion inhibiting systems, products containing residual amounts of such systems, and methods therefor |
US5350533A (en) * | 1993-01-26 | 1994-09-27 | General Atomics International Services Corporation | Pavement deicer compositions |
DE19648716A1 (de) * | 1996-06-07 | 1997-12-11 | Hoechst Ag | Enteisungsmittel auf der Basis von Acetaten und/oder Formiaten und Verfahren zum Schmelzen von Schnee und Eis auf Verkehrsflächen mit Hilfe dieses Mittels |
Also Published As
Publication number | Publication date |
---|---|
US5922241A (en) | 1999-07-13 |
CA2278529A1 (en) | 1998-07-30 |
EP0963423A1 (de) | 1999-12-15 |
AU6613198A (en) | 1998-08-18 |
DE19702242A1 (de) | 1998-07-30 |
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