DE951158C - Swellable water glass putty - Google Patents

Swellable water glass putty

Info

Publication number
DE951158C
DE951158C DEF16032A DEF0016032A DE951158C DE 951158 C DE951158 C DE 951158C DE F16032 A DEF16032 A DE F16032A DE F0016032 A DEF0016032 A DE F0016032A DE 951158 C DE951158 C DE 951158C
Authority
DE
Germany
Prior art keywords
water glass
weight
parts
cyanamide
glass putty
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.)
Expired
Application number
DEF16032A
Other languages
German (de)
Inventor
Dr Karl Dietz
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Priority to DEF16032A priority Critical patent/DE951158C/en
Application granted granted Critical
Publication of DE951158C publication Critical patent/DE951158C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/12Nitrogen containing compounds organic derivatives of hydrazine
    • C04B24/125Compounds containing one or more carbon-to-nitrogen double or triple bonds, e.g. imines
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26Silicates of the alkali metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Description

Quellfähige Wasserglaskitte In der Säurebautechnik werden für die Plattenauskleidungen von Apparaten, welche durch Wärme und Druck beansprucht werden, in erster Linie solche Mörtel verwendet, die ein bestimmtes Quellungsvermögen besitzen. Bei der Ausweitung, die die säurefeste Plattenauskleidung bzw. der Apparatemantel durch die Betriebsbeanspruchungen, insbesondere Wärme und Druck, erfährt, hat der säurefeste Mörtel dann Gelegenheit, infolge seines Quellungsvermögens mehr oder minder rasch eine Vorspannung der Plattenauskleidung gegenüber dem Apparatenmantel herbeizuführen.Swellable water glass putty In acid building technology, for Panel linings of apparatuses that are stressed by heat and pressure, primarily those mortars are used that have a certain swelling capacity. When expanding, the acid-proof plate lining or the apparatus jacket through the operational stresses, in particular heat and pressure, has the acid-resistant mortar then opportunity, due to its swelling capacity more or less quickly a pretensioning of the plate lining against the apparatus casing bring about.

Bei den Wasserglaskitten, welche im großen Umfange in der Säurebautechnik verwendet werden, bestand bisher die Schwierigkeit, quellfähige Kitte mit gleichzeitiger Beständigkeit gegen alle praktisch vorkommenden Säuren herzustellen.In the case of the water glass kittens, which are used to a large extent in the acid building technique used, there was previously the difficulty of swelling putty with simultaneous Establish resistance to all practically occurring acids.

Es wurde nun gefunden, daß man in einfacher Weise durch den Zusatz von Metallverbindungen des Cyanamids die Quellung von Wasserglaskitten hervorrufen bzw. regeln kann. Diese Metallverbindungen, in denen die Wassers:toffatbme des Cyanamids durch Metalle ersetzt ;sind, können ohne jede Schwierigkeit Wasserglaskiae aller Art zugemischt werden. Beim Einwirken von Wärme und insbesondere von warmen Flüssigkeiten findet dann eine Umsetzung von Cyanamide mit den Alkalisilikaten statt, wodurch gleichzeitig eine Verfestigung und eine Quellung in dem Wasserglasmörtel hervorgerufen werden. Die erhärteten Kittungen sind säurebeständig und zeigen eine gleichmäßige Volumenvergrößerung, welche die obengenannten Wirkungen auf die säurefesten Plattenauskleidungen hat.It has now been found that the addition of metal compounds of the cyanamide cause the swelling of water glass cement or can regulate. These metal compounds in which the water: toffatbme of the cyanamide replaced by metals; are can without any difficulty Wasserglaskiae all Art to be mixed. When exposed to heat and especially warm liquids then a reaction of cyanamides with the alkali metal silicates takes place, whereby at the same time caused solidification and swelling in the water-glass mortar will. The hardened putties are acid resistant and show a uniform increase in volume, which has the above-mentioned effects on the has acid-proof panel linings.

Als Metallcyanamidverbindungen eignen sich besonders die Verbindungen zweiwertiger Metalle, z. B. des Bleis und der Ezdalkalimetalle, wie des Calciums und Bariums. Diese Verbindungen werden den Wasserglaskitten zweckmäßig in einer Menge von o,1 bis io °%, bezogen auf das Kittmehl, zugesetzt- Zur Ausführung der Erfindung eignen sich alle bekannten Wasserglaskitte,- die gegebenenfalls noch bekannte, härtend wirkende Zusätze, wie Silikofluoride, Säureamide; Säureester, Sulfochloride oder Metalloxyde, wie Bleioxyd oder Zinkoxyd, enthalten. Auch Wasserglaskitte, welche das Alkalisilikat als Pulver im Kittmehl enthalten, sind geeignet. Als Wassergläser können Kali- oder Natronwassergläser oder deren Mischungen verwendet werden.The compounds are particularly suitable as metal cyanamide compounds divalent metals, e.g. B. lead and Ezdalkali metals, such as calcium and barium. These compounds are expediently in a water glass kitten Amount of 0.1 to 10%, based on the cement flour, added In accordance with the invention, all known water glass putties are suitable, - the possibly still known, hardening additives, such as silicofluorides, acid amides; Acid esters, sulfochlorides or metal oxides such as lead oxide or zinc oxide. Also water glass putty, which the alkali silicate contained as a powder in the putty are suitable. As water glasses Potash or soda water glasses or their mixtures can be used.

Es.ist zwar schon beschrieben, daß Bleicyanamid die Quellung von Unterwasseranstrichen, die mit leinölhaltigen Produkten ausgeführt wurden, verstärkt. Hieraus konnte jedoch nicht geschlossen werden, daß sich Cyanamide zur Regelung der Quellung von Wasserglaskitten eignen, um so mehr, als Farbanstriche und Wasserglaskitte im Erhärtungsmechanismus völlig voneinander verschieden sind. Die Anstriche trocknen durch Sauerstoffaufnahme der trocknenden öle an der Luft, während Wasserglaskitte infolge ihrer gänzlich anderen Zusammensetzung durch ganz andere Reaktionen erhärten und sowohl in ihrer Zusammensetzung als auch in ihrem physikalischen Aufbau von ölhaltigen Anstrichen vollständig verschieden sind. Beispiel i ioo Gewichtsteile eines Kittmehls, bestehend aus 4 Gewichtsteile Formamid, o,5 Gewichtsteile Bleicyanamid, 2,5 Gewichtsteile Kieselgur, 93 Gewichtsteile Quarzmehl, werden mit 4o g einer Natronwasserglaslösung vom Molverhältnis Si 02 zu Na20 =:2,65 und spezifisches Gewicht i,5o angemischt. Die Kittmasse erhärtet nach 24 Stunden und ergibt, wenn sie nach 8tägigem Lageim an der Luft in Calciumbisulfitlauge gekocht wird, eine Quellung von o,6 °%. Beispiel e ioo Gewichtsteile eines Kittmehls, bestehend aus 5 Gewichtsteilen Calciumcyanamid, 4 Gewichtsteilen Kaolin und 92 Gewichtsteilen Quarzmehl, werden mit 4o Gewichtsteilen einer Kaliwasserglaslösung vom Molverhältnis Si 02 zu K2 O = 1,88 und vom spezifischen Gewicht 1,42 angemischt. Die Kittmasse erhärtet innerhalb von 24 Stunden von selbst und ergibt, wenn sie nach 8tägigem Lagern an der Luft in io0/aiger Schwefelsäure gekocht wird, eine. Quellung von 0,5 O/o. An Stelle von Calciumcyanamid kann auch Bariumcyanamid in geringer Menge verwendet werden; man kann z. B. statt 5 Gewichtsteile Calciumcyanamid in obigem Kittmehl ein Gemisch von 4,5 Gewichtsteilen Calciumcyanamid und o,5 Gewichtsteilen Barium- -cyanarnid verwenden.It has already been described that lead cyanamide increases the swelling of underwater paints that have been carried out with products containing linseed oil. From this, however, it could not be concluded that cyanamides are suitable for regulating the swelling of water-glass cement, all the more since paint coatings and water-glass cement are completely different from one another in the hardening mechanism. The paints dry due to the oxygen absorption of the drying oils in the air, while water glass putties harden by completely different reactions due to their completely different composition and are completely different from oil-based paints both in their composition and in their physical structure. EXAMPLE 100 parts by weight of a cement flour, consisting of 4 parts by weight of formamide, 0.5 parts by weight of lead cyanamide, 2.5 parts by weight of kieselguhr, 93 parts by weight of quartz flour, are mixed with 40 g of a sodium silicate solution with a molar ratio of Si 02 to Na 2 O =: 2.65 and specific weight i , 5o mixed. The cement mass hardens after 24 hours and, if it is boiled in calcium bisulphite lye after 8 days in the air, results in a swelling of 0.6%. EXAMPLE 100 parts by weight of cement flour, consisting of 5 parts by weight of calcium cyanamide, 4 parts by weight of kaolin and 92 parts by weight of quartz flour, are mixed with 40 parts by weight of a potassium silicate solution with a molar ratio of Si O 2 to K 2 O = 1.88 and a specific weight of 1.42. The cement mass hardens by itself within 24 hours and, if it is boiled in 100% sulfuric acid after 8 days of storage in the air, results in a. Swelling of 0.5% . Instead of calcium cyanamide, barium cyanamide can also be used in small amounts; you can z. B. instead of 5 parts by weight of calcium cyanamide in the above cement powder, use a mixture of 4.5 parts by weight of calcium cyanamide and 0.5 parts by weight of barium cyanamide.

Claims (2)

PATENTANSPRÜCHE: i. Quellfähige Wasserglaskitte, dadurch gekennzeichnet, daß sie mindestens eine Metallverbindung des Cyanamids enthalten. PATENT CLAIMS: i. Swellable water glass cement, characterized that they contain at least one metal compound of cyanamide. 2. Wasserglaskitte nach Anspruch i, dadurch gekennzeichnet, daß sie noch bekannte, härtend wirkende Substanzen, wie Silikofluorid, Sulfocbloride, Säureamide, Säureester oder Metalloxyde enthalten. In Betracht gezogene Druckschriften: Deutsche Färbenzeitschrift, 1952 (6), S.288 bis 292.2. Water glass putty according to claim i, characterized in that they are known, hardening Substances such as silicon fluoride, sulfocloride, acid amides, acid esters or metal oxides contain. Publications considered: Deutsche Färbenzeitschrift, 1952 (6), pages 288 to 292.
DEF16032A 1954-11-03 1954-11-03 Swellable water glass putty Expired DE951158C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF16032A DE951158C (en) 1954-11-03 1954-11-03 Swellable water glass putty

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF16032A DE951158C (en) 1954-11-03 1954-11-03 Swellable water glass putty

Publications (1)

Publication Number Publication Date
DE951158C true DE951158C (en) 1956-10-25

Family

ID=7088086

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF16032A Expired DE951158C (en) 1954-11-03 1954-11-03 Swellable water glass putty

Country Status (1)

Country Link
DE (1) DE951158C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047349B (en) * 1957-03-29 1958-12-24 Hoechst Ag Process for the production of self-hardening water glass cement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047349B (en) * 1957-03-29 1958-12-24 Hoechst Ag Process for the production of self-hardening water glass cement

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