CH257801A - Process for bleaching wood. - Google Patents

Process for bleaching wood.

Info

Publication number
CH257801A
CH257801A CH257801DA CH257801A CH 257801 A CH257801 A CH 257801A CH 257801D A CH257801D A CH 257801DA CH 257801 A CH257801 A CH 257801A
Authority
CH
Switzerland
Prior art keywords
wood
bleaching wood
bleaching
hydrogen peroxide
peroxide solution
Prior art date
Application number
Other languages
German (de)
Inventor
Zumbrunnen Fritz
Original Assignee
Zumbrunnen Fritz
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 Zumbrunnen Fritz filed Critical Zumbrunnen Fritz
Publication of CH257801A publication Critical patent/CH257801A/en

Links

Classifications

    • 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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/02—Staining or dyeing wood; Bleaching wood
    • 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
    • B27K3/34—Organic impregnating agents

Landscapes

  • 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)
  • Detergent Compositions (AREA)

Description

  

  Verfahren zum Bleichen von     Holz.       Gegenstand des     vorliegenden        Patentes,    ist  ein Verfahren zum Bleichen von Holz, das       dadurch    gekennzeichnet ist,     dass        man        Idas    Holz  mit einer sauren     Waasserstoffsuperoxydlösung     behandelt.  



  Vorzugsweise erfolgt die Behandlung  nachdem das Holz     albgelaugt    worden ist.  Man geht     beispielsweise    so vor,     dass    man  auf die abgelaugte, von     Farb-    und     Lack-          rückständen    befreite     Holzfläche    mit dem  Pinsel eine 15%ige     Wasserstoffsuperoxyd-          lösung,    die     ä    %     technische    Schwefelsäure  enthält,     aufstreicht.    Nachdem die     Bleichung          Mattgefunden    hat,

   wird mit     Wasser        abge-          waschen.       Mit dem     vorliegenden    Verfahren ist es       möglich,        durch     grau ge  wordenem oder     beim,    Ablaugen nachgedun  keltem Holz Beinen Naturton wieder zu ver  leihen.



  Process for bleaching wood. The subject of the present patent is a process for bleaching wood, which is characterized in that Ida's wood is treated with an acidic hydrogen peroxide solution.



  The treatment is preferably carried out after the wood has been leached. One proceeds, for example, that a 15% hydrogen peroxide solution, which contains 1% technical sulfuric acid, is spread with a brush onto the leached wood surface, which has been freed from paint and varnish residues. After the bleach finds matte,

   is washed off with water. With the present method it is possible to give legs a natural tone again by turning gray or by removing lye after darkening the legs.

Claims (1)

PATENTANSPRUCH: Verfaihren zum Bleichen: von Holz, @da- durch gekennzeichnet, dass man das Holz mit einer sauren Wasserstoffsuperoxydlösung be handelt. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, .dass man eine 15%ige Was- serstoffsuperoxydläsung, die 5% technische Schwefelsäure enthält, verwendet. PATENT CLAIM: Process for bleaching: of wood, @ characterized in that the wood is treated with an acidic hydrogen peroxide solution. SUBCLAIM: Process according to patent claim, characterized in that a 15% hydrogen superoxide solution containing 5% technical grade sulfuric acid is used.
CH257801D 1947-10-02 1947-10-02 Process for bleaching wood. CH257801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH257801T 1947-10-02

Publications (1)

Publication Number Publication Date
CH257801A true CH257801A (en) 1948-10-31

Family

ID=4472344

Family Applications (1)

Application Number Title Priority Date Filing Date
CH257801D CH257801A (en) 1947-10-02 1947-10-02 Process for bleaching wood.

Country Status (1)

Country Link
CH (1) CH257801A (en)

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