DE1190921B - Process for stabilizing sodium silicate solutions for corrosion protection purposes - Google Patents

Process for stabilizing sodium silicate solutions for corrosion protection purposes

Info

Publication number
DE1190921B
DE1190921B DET24985A DET0024985A DE1190921B DE 1190921 B DE1190921 B DE 1190921B DE T24985 A DET24985 A DE T24985A DE T0024985 A DET0024985 A DE T0024985A DE 1190921 B DE1190921 B DE 1190921B
Authority
DE
Germany
Prior art keywords
sodium silicate
corrosion protection
protection purposes
silicate solutions
stabilizing sodium
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.)
Pending
Application number
DET24985A
Other languages
German (de)
Inventor
Hein Ruck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terpal Chemie Ruck & Co
Original Assignee
Terpal Chemie Ruck & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terpal Chemie Ruck & Co filed Critical Terpal Chemie Ruck & Co
Priority to DET24985A priority Critical patent/DE1190921B/en
Publication of DE1190921B publication Critical patent/DE1190921B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/32—Alkali metal silicates
    • C01B33/325—After-treatment, e.g. purification or stabilisation of solutions, granulation; Dissolution; Obtaining solid silicate, e.g. from a solution by spray-drying, flashing off water or adding a coagulant
    • 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

Description

Verfahren zum Stabilisieren von Natriumsilicatlösungen für Korrosionsschutzzwecke Die Erfindung betrifft ein Verfahren zum Stabilisieren von Natriumsilicatlösungen für Korrosionsschutzzwecke. Es ist bekannt, Natriumsilicate und Natriumpolysilicate in gleicher Weise wie z. B. Kaliumsilicatverbindungen für den Korrosionsschutz einzusetzen. Derartige Mittel gelangen vorzugsweise in amorpher, kristallinartiger oder flüssiger Form zur Verwendung.Process for stabilizing sodium silicate solutions for corrosion protection purposes The invention relates to a method for stabilizing sodium silicate solutions for corrosion protection purposes. It is known to use sodium silicates and sodium polysilicates in the same way as z. B. to use potassium silicate compounds for corrosion protection. Such agents are preferably amorphous, crystalline or liquid Form for use.

Alle diese aus chemischen Verbindungen bestehenden Korrosionsinhibitoren haben jedoch den Nachteil, daß sie bei Temperaturen um den Siedepunkt herum nicht mehr voll einsatzfähig sind. Es erfolgt entweder ein zu rascher Abbau oder in erhöhtem Maße die Ausfällung von Kieselsäure, wodurch der ursprüngliche Zweck, nämlich der Korrosionsschutz oder die Bildung von Korrosionsschutzfilmen, nicht mehr gewährleistet ist.All of these chemical compound corrosion inhibitors however, they have the disadvantage that they do not work at temperatures around the boiling point are more fully operational. There is either too rapid a degradation or increased Measure the precipitation of silica, creating the original purpose, namely the Corrosion protection or the formation of corrosion protection films is no longer guaranteed is.

Nach der Erfindung wurde gefunden, daß man bei Zugabe eines Ionenaustauschers unter bestimmten Bedingungen diese Ausfällungsgrenze wesentlich nach oben versetzen kann. Demgemäß werden dem flüssigen Natriumsilicat bei Temperaturen von 10 bis 100' C solche Mengen an Äthylendiamintetraessigsäuren zugesetzt, daß nach Verdünnung mit Wasser bei Erhitzen auf 100 bis 150° C keine Kieselsäure abgeschieden wird. Beispiel 1000 g eines flüssigen Natriumsilicats der allgemeinen Formel Na,0 - 3-4 SiO., werden mit 1 bis 200 g Ätylendiamintetraessigsäure bei einer Temperatur zwischen 10 bis 100° C vermischt. Die Zugabe erfolgt in langsamer Dosierung und unter Benutzung von destilliertem Wasser. Die so gewonnene Lösung ergibt in entsprechender Verdünnung eine Substanz, die zwischen 100 und 150° C keine Kieselsäure ausscheidet. Durch Zugabe bestimmter Mengen Polyalkylenglykole kann dieser Effekt noch gesteigert werden.According to the invention it has been found that when an ion exchanger is added move this precipitation limit significantly upwards under certain conditions can. Accordingly, the liquid sodium silicate at temperatures of 10 to 100 ' C such amounts of ethylenediaminetetraacetic acids added that after dilution no silica is deposited with water when heated to 100 to 150 ° C. Example 1000 g of a liquid sodium silicate of the general formula Na, 0-3-4 SiO., With 1 to 200 g Ätylenediaminetetraacetic acid at a temperature between 10 to 100 ° C mixed. The addition takes place slowly and with use of distilled water. The solution obtained in this way results in an appropriate dilution a substance that does not excrete any silica between 100 and 150 ° C. By This effect can be increased by adding certain amounts of polyalkylene glycols.

Claims (2)

Patentansprüche: 1. Verfahren zum Stabilisieren von Natriumsilicatlösungen für Korrosionsschutzzwecke, d adurch gekennzeichnet, daß dem flüssigen Natriumsilicat bei Temperaturen von 10 bis 100° C solche Mengen an Äthylendiamintetraessigsäuren zugesetzt werden, daß nach Verdünnung dieser Lösung mit Wasser bei Erhitzen auf 100 bis 150° C keine Kieselsäure abgeschieden wird. Claims: 1. Method for stabilizing sodium silicate solutions for corrosion protection purposes, characterized in that the liquid sodium silicate such amounts of ethylenediaminetetraacetic acids at temperatures of 10 to 100 ° C be added that after diluting this solution with water when heated 100 to 150 ° C no silica is deposited. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zusätzlich Polyalkylenglykol zugegeben wird. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 729 751.2. The method according to claim 1, characterized in that polyalkylene glycol is additionally added. Into consideration Printed publications: German patent specification No. 729 751.
DET24985A 1963-10-23 1963-10-23 Process for stabilizing sodium silicate solutions for corrosion protection purposes Pending DE1190921B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET24985A DE1190921B (en) 1963-10-23 1963-10-23 Process for stabilizing sodium silicate solutions for corrosion protection purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET24985A DE1190921B (en) 1963-10-23 1963-10-23 Process for stabilizing sodium silicate solutions for corrosion protection purposes

Publications (1)

Publication Number Publication Date
DE1190921B true DE1190921B (en) 1965-04-15

Family

ID=7551786

Family Applications (1)

Application Number Title Priority Date Filing Date
DET24985A Pending DE1190921B (en) 1963-10-23 1963-10-23 Process for stabilizing sodium silicate solutions for corrosion protection purposes

Country Status (1)

Country Link
DE (1) DE1190921B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502646A1 (en) * 1981-03-30 1982-10-01 Dow Corning METHOD FOR THE STABILIZATION OF SILICATES AND THE INHIBITION OF AQUEOUS METAL CORROSION USING SUBSTITUTED SILICONATES CONTAINING NITROGEN OR SULFUR, AND COMPOSITIONS

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE729751C (en) * 1941-02-04 1942-12-22 Herrmann Gebr Process for the production of colloidal silica solutions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE729751C (en) * 1941-02-04 1942-12-22 Herrmann Gebr Process for the production of colloidal silica solutions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502646A1 (en) * 1981-03-30 1982-10-01 Dow Corning METHOD FOR THE STABILIZATION OF SILICATES AND THE INHIBITION OF AQUEOUS METAL CORROSION USING SUBSTITUTED SILICONATES CONTAINING NITROGEN OR SULFUR, AND COMPOSITIONS

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