DE714105C - Water-soluble impregnation agent for wood - Google Patents

Water-soluble impregnation agent for wood

Info

Publication number
DE714105C
DE714105C DEI57168D DEI0057168D DE714105C DE 714105 C DE714105 C DE 714105C DE I57168 D DEI57168 D DE I57168D DE I0057168 D DEI0057168 D DE I0057168D DE 714105 C DE714105 C DE 714105C
Authority
DE
Germany
Prior art keywords
wood
water
alkali
sludge
impregnation agent
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
DEI57168D
Other languages
German (de)
Inventor
Dr Adolf Rabanus
Dr Bernhard Wurzschmitt
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI57168D priority Critical patent/DE714105C/en
Application granted granted Critical
Publication of DE714105C publication Critical patent/DE714105C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16Inorganic impregnating agents
    • B27K3/32Mixtures of different inorganic impregnating agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

Wasserlösliches Imprägniermittel für Holz Salze der Chromsäure, Arsensäure und Fluorwasserstoffsäule sind für sich Moder zusammen mit anderen Stoffen als wirksame Imprägniermittel bekannt. In den urspriinglich klaren Lösungen dieser Imprägniermittel bildet sich jedoch leicht ein Schlamm, der sich auf den zu imprägnierenden Hölzern ablagert, die Durchimprägnierung vor allem beim sog. Saftverdrängungsverfahren verhindert und die ,aus dem Imprägnierbad kommenden Hölzer unansehnlich erscheinen läßt. Störend ist,auch das Absetzen dieses Schlammes in den Arbeitsgefäßen, insbesondere Ventilen und Leitungen, .abgesehen davon, daß die Bildung des Schlammes einen Substanzverlust bedeutet.Water-soluble impregnating agent for wood. Salts of chromic acid, arsenic acid and hydrofluoric acid, together with other substances, are effective in themselves Impregnating agent known. In the originally clear solutions of these impregnating agents However, a sludge easily forms on the wood to be impregnated deposits, which prevents through-impregnation, especially in the so-called juice displacement process and makes the wood coming out of the impregnation bath appear unsightly. Annoying is also the settling of this sludge in the working vessels, especially valves and pipes, apart from the fact that the formation of the sludge results in a loss of substance means.

Es wurde nun gefunden, daß Imprägnier-Iösungen, die Alkalifluoride und bzw. .oder Arsensäure oder deren Alkalis:alze und gegebenenfalls Alkalichromate -enthalten, klar bleiben und keinen Schlamm ausscheiden, wenn sie einen Gehalt an Alkalimeta- oder -pyrophosphat besitzen. Diese Phosphate können den Imprägnierstoffen bereits vor deren Auflösung oder ,auch erst der bereits hergestellten Lösung zugesetzt werden. Geeignete Imprägnierflüssigkeiten erhält man beispielsweise, wenn man den bekannten, Fluorid, Arsenat, Bichromat und Dinitro.-phenolenthaltenden Imprägniermitteln auf r oo Teile 5 bis r 5 Teile Natriumpyrophosphat oder Natriummetaphosphat zusetzt und das Gemisch in Wasser zu einer z bis r 5 %igen Lösung aufnimmt. Der so hergestellten Lösung können weitere Mengen Pyro- oder Metaphosphat,etwa z bis t o g je Liter, zugesetzt werden. Vergleicht man diese Imprägnierlösungen mit gleich starken Lösungen, die ohne die erwähnten Phosphorverbindungen hergestellt sind, so zeigt sich, daß unter Bedingungen, unter denen die letzteren Lösungen bereits 3 9 voluminösen Schlamm je Liter abgesetzt haben, die ersteren Lösungen= keinen oder nur eine sehr geringe Menge Schlamm gebildet haben, z. B. nur 0,02 g.It has now been found that impregnating solutions which contain alkali fluorides and / or arsenic acid or their alkali: salts and optionally alkali chromates remain clear and do not excrete sludge if they contain alkali meta- or pyrophosphate. These phosphates can be added to the impregnating materials before they are dissolved or even only to the solution that has already been prepared. Suitable impregnating liquids are obtained, for example, if the known impregnating agents containing fluoride, arsenate, bichromate and dinitro-phenol are added to 5 to 5 parts of sodium pyrophosphate or sodium metaphosphate to 100 parts and the mixture is taken up in water to form a 5% to 5% solution . Further amounts of pyro- or metaphosphate, about z to tog per liter, can be added to the solution prepared in this way. If one compares these impregnating solutions with equally strong solutions which are produced without the above-mentioned phosphorus compounds, it turns out that under conditions under which the latter solutions have already deposited 3 9 voluminous sludge per liter, the former solutions = none or only a very small one Amount of sludge formed, e.g. B. only 0.02 g.

Nach einem bekannten Verfahren sollen, Holzkonservierungsmitteln aus Fluoriden lind Arsenverbindungen, die den Nachteil haben. Metallteile der Arbeitsvorrichtungen anzugreifen und .außerdem unlösliche Verbindungen zu bilden, zwecks Vermeidung dieser Nachteile gewisse Stoffe,- u. a. auch Salze der Phosphorsäuren, zugesetzt werden, wobei namentlich Am;moniumphosphat oder N,atriumammoniumphosphat genannt wurden. Durch Vergleichsversuche wurde jedoch festgestellt, daß diese Phosphate die eingangs erwähnte Schlammbildung nicht nur nicht verhindern, sondern sogar noch erhöhen.According to a known method, wood preservatives should be made Fluorides and arsenic compounds, which have the disadvantage. Metal parts of the working devices and also to form insoluble compounds in order to avoid them Disadvantages of certain substances, - i.a. salts of phosphoric acids are also added, where am; monium phosphate or N, atrium ammonium phosphate were named. However, through comparative experiments it was found that these phosphates were the initially Not only do not prevent the mentioned sludge formation, but actually increase it.

Die Wirkung der nach dem vorliegenden Verfahren anzuwendenden Alkalimeta- oder -pyrophosphate war nicht aus der bekannten Eigenschaft dieser Phosphate herzuleiten, in Kessehvasser oder sonstigem Gebrauchswasser die Bildung von Fällungen, die auf die Gegenwart der Härtebildner zurückzuführen sind, zu verhindern; .denn die Schlammbildung in Imprä.gniermitteln der vorliegenden Art und die Verhinderung der Schlammbildung durch Meta- oder Pyrophosphate tritt auch dann ein, wenn Wasser ohne Härtebildner zur Herstellung der Mittel benutzt wurde.The effect of the alkali metal to be applied according to the present process or pyrophosphates could not be derived from the known property of these phosphates, in kessehvasser or other service water the formation of precipitates, which on the presence of hardness builders can be attributed to prevent; .because the formation of sludge in impregnating agents of the present type and the prevention of sludge formation due to meta- or pyrophosphates occurs even if water does not contain any hardeners was used to produce the funds.

Claims (1)

PATENTANSPRUCH: Alkalifluoride und bzw.,oder Arsensäure oder deren Alkalisalze sowie Alkalisalze einer Phosphorsäure und gegebenenfalls Alkalichromate enthaltendes, wasserlösliches Imprägniermittel für Holz, dadurch gekennzeichnet, daß die Alkalisalze der Phosphorsäure ,aus Alkalimetaphosphat oder -pyrophosphat bestehen.PATENT CLAIM: Alkali fluoride and / or arsenic acid or its Alkali salts and alkali salts of a phosphoric acid and optionally alkali chromates containing, water-soluble impregnating agent for wood, characterized in that that the alkali salts of phosphoric acid, from alkali metaphosphate or pyrophosphate exist.
DEI57168D 1937-02-19 1937-02-19 Water-soluble impregnation agent for wood Expired DE714105C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI57168D DE714105C (en) 1937-02-19 1937-02-19 Water-soluble impregnation agent for wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI57168D DE714105C (en) 1937-02-19 1937-02-19 Water-soluble impregnation agent for wood

Publications (1)

Publication Number Publication Date
DE714105C true DE714105C (en) 1941-11-21

Family

ID=7194507

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI57168D Expired DE714105C (en) 1937-02-19 1937-02-19 Water-soluble impregnation agent for wood

Country Status (1)

Country Link
DE (1) DE714105C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915623C (en) * 1949-07-30 1954-07-26 Pechiney Prod Chimiques Sa Process for preserving wood by the sap removal process
AT391761B (en) * 1988-12-29 1990-11-26 Haltmeier Georg Process for checking the condition of wood and means for use in this process
US7005090B2 (en) 2001-10-24 2006-02-28 Agilent Technologies, Inc. Method for manufacturing a flow cell

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915623C (en) * 1949-07-30 1954-07-26 Pechiney Prod Chimiques Sa Process for preserving wood by the sap removal process
AT391761B (en) * 1988-12-29 1990-11-26 Haltmeier Georg Process for checking the condition of wood and means for use in this process
US7005090B2 (en) 2001-10-24 2006-02-28 Agilent Technologies, Inc. Method for manufacturing a flow cell

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