CH238190A - Wood preservatives. - Google Patents

Wood preservatives.

Info

Publication number
CH238190A
CH238190A CH238190DA CH238190A CH 238190 A CH238190 A CH 238190A CH 238190D A CH238190D A CH 238190DA CH 238190 A CH238190 A CH 238190A
Authority
CH
Switzerland
Prior art keywords
wood
sublimate
wood preservatives
shrinkage cracks
wood preservative
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH238190A publication Critical patent/CH238190A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/10—Fluorides
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A01N59/18—Mercury
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A01N59/22—Arsenic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/22—Compounds of zinc or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

  

  Holzkonservierungsmittel.    Bekanntlich wird bei der Imprägnierung  von Holz mit Hilfe von     Sublimat    diese Ver  bindung so dauerhaft im Holz fixiert, dass  bei der     Bewitterung    des Holzes kaum  nennenswerte     Auslaugung    stattfindet. Dieser  hohen Haftfestigkeit des     Sublimats    an der  Holzfaser steht nur eine verhältnismässig  geringe     Eindringtiefe    des Schutzmittels in  das Holz gegenüber.

   Wird ein mit     Sublimat     behandeltes Holz im Verlauf des Gebrauchs  durch Schwundrisse aufgespalten oder äussere  meist nur     0,5-1    cm dicke mit     Sublimat    ge  tränkte Zone verletzt, so können an diesen  Stellen holzzerstörende Pilze eindringen     und     trotz des stark wirkenden Schutzes des     Su-          blimats    in den äussern Holzzonen eine Fäul  nis der innern Zonen herbeiführen, so dass  das Holz vollständig unbrauchbar wird.  



  Man hat ans diesem Grunde bereits Ver  fahren in Vorschlag gebracht, durch die ein  tieferes Eindringen des     Sublimats    ermöglicht  werden sollte, wie beispielsweise eine Vor-         behandlung    des Holzes mit Wasserdampf  oder durch Dämpfen mit harzlösenden       Lösungsmitteln    und nachfolgender scharfer  Trocknung, wobei eine weitgehende Bildung  von Schwundrissen und     durch    diese eine  bessere Aufnahme der     Sublimatlösung    an  gestrebt wurde. Die     Wirksamkeit    dieser  Verfahren ist in starkem Masse davon ab  hängig, wie weit es gelingt, das Holz mit  Schwundrissen zu durchsetzen.

   Eine Gleich  mässigkeit der Verteilung des Imprägnier  salzes ist aber auf keinen Fall dabei gewähr  leistet, da das     Eindringungsvermögen    des       Sublimats    von dem Schwundrissen aus in       tangentialer    Richtung gering und mithin  auch auf diesem Wege eine vollständige und  gleichmässige Durchdringung tieferer Holz  schichten nicht zu erreichen ist.  



  Gegenstand dieser Erfindung ist ein     Su-          blimas    enthaltendes Holzschutzmittel, mit  dessen Hilfe es gelingt, ohne ein     Vorbehand-          lung    der oben erwähnten Art eine Konser-    
EMI0002.0001     
  
   
EMI0002.0002     
  




  Wood preservatives. As is well known, when impregnating wood with the help of sublimate, this connection is so permanently fixed in the wood that there is hardly any significant leaching during the weathering of the wood. This high adhesive strength of the sublimate on the wood fiber is offset by only a relatively low penetration depth of the protective agent into the wood.

   If a wood treated with sublimate is split open due to shrinkage cracks in the course of use or if the outer zone, which is usually only 0.5-1 cm thick with sublimate, is damaged, wood-destroying fungi can penetrate these areas and despite the strong protection of the sublimate cause the outer wood zones to rot in the inner zones, so that the wood is completely unusable.



  For this reason, a method has already been proposed that should allow deeper penetration of the sublimate, such as pretreatment of the wood with water vapor or by steaming with resin-dissolving solvents and subsequent sharp drying, with extensive formation of shrinkage cracks and through this a better absorption of the sublimate solution was sought. The effectiveness of this process is to a large extent dependent on how far it is possible to penetrate the wood with shrinkage cracks.

   A uniform distribution of the impregnation salt is in no way guaranteed, since the penetration capacity of the sublimate from the shrinkage cracks in the tangential direction is low and therefore complete and even penetration of deeper layers of wood cannot be achieved in this way either.



  The subject of this invention is a wood preservative containing su- blimas, with the help of which it is possible to obtain a preservative without a pretreatment of the type mentioned above.
EMI0002.0001
  
   
EMI0002.0002
  


 

Claims (1)

EMI0002.0003 kennzeichnet, dass es noch mindestens ein anderes Holzschutzmittel enthält. 5. Holzkonservierungsmittel nach Patent anspruch und den Unteransprüchen 1 und 4, dadurch gekennzeichnet, dass es noch Kupfer sulfat enthält. 6. Holzkonservierungsmittel nach Patent ansprach und den Unteransprüchen 1 und 4, dadurch gekennzeichnet, dass es noch ein Phenol enthält. EMI0002.0003 indicates that it contains at least one other wood preservative. 5. Wood preservative according to claim and dependent claims 1 and 4, characterized in that it still contains copper sulfate. 6. Wood preservative according to patent addressed and the dependent claims 1 and 4, characterized in that it also contains a phenol.
CH238190D 1943-02-12 1944-02-10 Wood preservatives. CH238190A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE238190X 1943-02-12

Publications (1)

Publication Number Publication Date
CH238190A true CH238190A (en) 1945-06-30

Family

ID=5903456

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238190D CH238190A (en) 1943-02-12 1944-02-10 Wood preservatives.

Country Status (1)

Country Link
CH (1) CH238190A (en)

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