CH184514A - Process for the production of a transparent, reddish brown varnish. - Google Patents

Process for the production of a transparent, reddish brown varnish.

Info

Publication number
CH184514A
CH184514A CH184514DA CH184514A CH 184514 A CH184514 A CH 184514A CH 184514D A CH184514D A CH 184514DA CH 184514 A CH184514 A CH 184514A
Authority
CH
Switzerland
Prior art keywords
reddish brown
transparent
varnish
production
dye
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH184514A publication Critical patent/CH184514A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 173751.    Verfahren zur Herstellung eines transparenten, rötlich braunen Lackes.    Es wurde gefunden, dass es gelingt, einen  transparenten, rötlich braunen Lack mit aus  gezeichneten Echtheitseigenschaften herzu  stellen, indem man den     Monoazofarbstoff     aus     diazotiertem        5-Nitro-3-amino-4-oxy-1-          methylbenzol    und     Acetessigester,    eine     Ver,          bindung    des     6wertigen    Chroms und einen  Lack zusammenbringt und durch gelindes  Erwärmen des Gemisches das rötlich braun       ,

  gefärbte        Chromkomplexsalz    des Farbstoffes  sich bilden lässt. Man erhält je nach der       Farbstoffkonzentration    einen heller oder  dunkler rötlich braun gefärbten, transparen  ten Lack von sehr grosser     Reinheit    des Farb  tones, der gut lichtechte     Anstriche    ergibt.  Seine Verwendung liegt auf allen Gebieten  der     Anstrichtechnih,    wo grosse     Ansprüche    an  die     Lichtechtheit        gestellt    werden.  



  Als Ausgangslacke kommen die meisten  Lacke und Firnisse der Technik in Frage,  die     Acetylzellulose-    und     Nitrozelluloselacke,     Lacke aus Kunstharzen, wie     Glyzerin-Phthal-          säureanhydrid-Kondensationsprodukte,    Chlor-         kautschuklacke,        Gelatinelösungen,    Sprit  lacke, Leinöl und     Lithographenfirnisse.     



       Beispiel:     0,4     g    des     Monoazofarbstoffes    aus     diazo-          tiertem        5-Nitro-3-amino-4-oxy-l-methylben-          zol    und     Acetessigester    werden in 100g     Nitro-          zelluloselack    gelöst, mit 0,2 g     Natrium-          bichromat    versetzt und     -durch    gelindes Er  wärmen in den gut lichtechten rötlich brau  nen Lack übergeführt.  



  Der Nitrolack kann zum Beispiel wie  folgt zusammengesetzt sein:  155 Teile     Kollodiumwolle        butanolfeucht     400 Teile     Butylacetat     20 Teile     Dibutylphthalat     25 Teile     Trikresylphosphat      400 Teile     Athylalkohol    9,6 %.



      Additional patent to main patent no. 173751. Process for the production of a transparent, reddish-brown lacquer. It has been found that it is possible to produce a transparent, reddish brown lacquer with excellent fastness properties by converting the monoazo dye from diazotized 5-nitro-3-amino-4-oxy-1-methylbenzene and acetoacetic ester, a compound of the 6-valued chromium and a lacquer and by gently warming the mixture the reddish brown,

  colored chromium complex salt of the dye can be formed. Depending on the dye concentration, a lighter or darker reddish brown colored, transparent lacquer of very high purity of the color tone is obtained, which gives good lightfast coatings. Its use is in all areas of painting technology where high demands are made on lightfastness.



  Most technical lacquers and varnishes can be used as starting lacquers, acetyl cellulose and nitrocellulose lacquers, lacquers made from synthetic resins such as glycerol-phthalic anhydride condensation products, chlorinated rubber lacquers, gelatin solutions, fuel lacquers, linseed oil and lithographic varnishes.



       Example: 0.4 g of the monoazo dye from diazotized 5-nitro-3-amino-4-oxy-l-methylbenzene and acetoacetic ester are dissolved in 100 g of nitrocellulose varnish, 0.2 g of sodium bichromate is added and - transferred to the lightfast, reddish-brown varnish by gentle heating.



  The nitro lacquer can be composed, for example, as follows: 155 parts of collodion wool, moist butanol, 400 parts of butyl acetate, 20 parts of dibutyl phthalate, 25 parts of tricresyl phosphate, 400 parts of ethyl alcohol 9.6%.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines rötlich braunen, transparenten Lackes, dadurch ge kennzeichnet, dass man den Monoazofarbstoff aus diazotiertem 5-Nitro-3-amino-4-oxy-1- methylbenzol und Acetessigester, eine Ver bindung des 6wertigen Chroms und einen Lack zusammenbringt und durch gelindes Erwärmen des Gemisches das rötlich braun gefärbte Chromkomplegsalz des Farbstoffes sich bilden lässt. PATENT CLAIM: Process for the production of a reddish brown, transparent varnish, characterized in that the monoazo dye from diazotized 5-nitro-3-amino-4-oxy-1-methylbenzene and acetoacetic ester, a compound of hexavalent chromium and a varnish are brought together and by gently warming the mixture, the reddish brown colored chromium complex salt of the dye can be formed. Man erhält je nach der Farbstoffkonzentration einen heller oder dunkler rötlich braun gefärbten, transparen ten Lack von sehr grosser Reinheit des Farb tones, der gut lichtechte Anstriche ergibt. Seine Verwendung liegt auf allen Gebieten der Anstrichtechnik, wo grosse Ansprüche an die Lichtechtheit gestellt werden. Depending on the dye concentration, a lighter or darker reddish brown colored, transparent lacquer of very high purity of the color tone is obtained, which gives good lightfast coatings. It is used in all areas of painting technology where high demands are made on lightfastness.
CH184514D 1932-12-19 1935-09-09 Process for the production of a transparent, reddish brown varnish. CH184514A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE173751X 1932-12-19
CH184514T 1935-09-09

Publications (1)

Publication Number Publication Date
CH184514A true CH184514A (en) 1936-05-31

Family

ID=32094441

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184514D CH184514A (en) 1932-12-19 1935-09-09 Process for the production of a transparent, reddish brown varnish.

Country Status (1)

Country Link
CH (1) CH184514A (en)

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