AT22021B - Process for making wood fire-proof. - Google Patents

Process for making wood fire-proof.

Info

Publication number
AT22021B
AT22021B AT22021DA AT22021B AT 22021 B AT22021 B AT 22021B AT 22021D A AT22021D A AT 22021DA AT 22021 B AT22021 B AT 22021B
Authority
AT
Austria
Prior art keywords
solution
proof
wood fire
making wood
aluminum sulfate
Prior art date
Application number
Other languages
German (de)
Inventor
Joseph Lybrand Ferrell
Original Assignee
Joseph Lybrand Ferrell
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 Joseph Lybrand Ferrell filed Critical Joseph Lybrand Ferrell
Application granted granted Critical
Publication of AT22021B publication Critical patent/AT22021B/en

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  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zum Feuersichermachen von Holz. 



   Zum Fouersichermachen wurden vegetabilische oder animalische Fasern bisher mit einer Aluminiumsulfatlösung imprägniert. Zum Mischen und zur Aufbewahrung dieser Lösung bedient man sich vorwiegend eiserner   Gefässe. Beim Imprägnieren   mit einer solchen Lösung leidet insbesondere Holz, indem sein Aussehen und seine Qualität dadurch ver-   schlechtert.   werden, dass durch die Lösung die Eisenwandungen angegriffen werden und Eisensulfate mit dem Aluminiumsulfat in Lösung gehen. Dadurch wird bei der Behandlung tanninhaltiger Hölzer die Bildung von   gcrbsaurem   Eisen ermöglicht, welches die Farbe des Holzes derart beeinträchtigt, dass letzteres nach der Behandlung einen geringeren Handelswert besitzt.

   Diesen Übelstand suchte man durch Zusatz von Schwefel-oder Essigsäure zu beheben, doch ohne Erfolg, da diese Säuren die Behälterwandung nur intensiver angreifen und überdies die Ilolzfaser   beschädigen. Vorliegende Ernndung   besteht nun darin, die zu dem bekannten Zwecke verwendete Aluminiumsulfatlösung mit Oxalsäure zu versetzen.

   So kaun eine Lösung der geringsten grauen Handelssorte von Aluminiumsulfat durch Zusatz einer geringen Menge Oxalsäure gegen   dito einflüsse   des eisernen Behälters geschützt 
 EMI1.1 
 indessen für die Praxis ein   stärkerer   Säurezusatz, etwa 65   9   auf   4'5 l Lösung,   welcher eventuell auch bis 225   9   erhöht werden kann, um den beabsichtigten Erfolg ohne jedesmalige Untersuchung des rohen Aluminiumsulfates ungeachtet der schwankenden Be-   schaffenheit   der Handelsware sicher zu erreichen.

   Je nach der Beschaffenheit der Handelsware ist nämlich mehr oder weniger Salz erforderlich, um eine Lösung von gewissem spezifischen Gewicht zu ergeben und die verschiedenen Eigenschaften des Salzes erfordern auch verschiedenen   Oxalsäurezusatz,   wenn dieser genau nach den Eigenschaften des jeweils 
 EMI1.2 
 dio für die   Verbesserung   des Aluminiumsulfates erforderlichen angewendet werden, ohne   dass die Wirksamkeit der Lösung nachweisbar beeinträchtigt würde.   

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for making wood fire-proof.



   So far, vegetable or animal fibers have been impregnated with an aluminum sulfate solution to make them safe. Iron vessels are mainly used to mix and store this solution. When impregnating with such a solution, wood in particular suffers as its appearance and quality deteriorate. that the iron walls are attacked by the solution and iron sulfates go into solution with the aluminum sulfate. This enables the formation of acidic iron when treating wood containing tannins, which affects the color of the wood to such an extent that the latter has a lower commercial value after the treatment.

   Attempts were made to remedy this deficiency by adding sulfuric or acetic acid, but without success, since these acids only attack the container wall more intensely and, moreover, damage the wood fiber. The present solution consists in adding oxalic acid to the aluminum sulfate solution used for the known purpose.

   A solution of the slightest gray commercial grade of aluminum sulfate can be protected against the same effects of the iron container by adding a small amount of oxalic acid
 EMI1.1
 in practice, however, a stronger acid addition, about 65 9 to 45 l solution, which can possibly also be increased to 225 9 in order to achieve the intended success reliably without each time examination of the crude aluminum sulfate, regardless of the fluctuating nature of the commodity.

   Depending on the nature of the merchandise, more or less salt is required to produce a solution of a certain specific gravity, and the different properties of the salt also require different oxalic acid additions, if this exactly depends on the properties of the particular
 EMI1.2
 dio necessary for the improvement of the aluminum sulfate can be used without the effectiveness of the solution being demonstrably impaired.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT22021D 1903-11-06 1903-11-06 Process for making wood fire-proof. AT22021B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT22021T 1903-11-06

Publications (1)

Publication Number Publication Date
AT22021B true AT22021B (en) 1905-11-10

Family

ID=3529882

Family Applications (1)

Application Number Title Priority Date Filing Date
AT22021D AT22021B (en) 1903-11-06 1903-11-06 Process for making wood fire-proof.

Country Status (1)

Country Link
AT (1) AT22021B (en)

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