DE375475C - Process for the production of water-proof and overprint-proof colored lacquers - Google Patents

Process for the production of water-proof and overprint-proof colored lacquers

Info

Publication number
DE375475C
DE375475C DEB102967D DEB0102967D DE375475C DE 375475 C DE375475 C DE 375475C DE B102967 D DEB102967 D DE B102967D DE B0102967 D DEB0102967 D DE B0102967D DE 375475 C DE375475 C DE 375475C
Authority
DE
Germany
Prior art keywords
proof
water
overprint
production
colored lacquers
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
DEB102967D
Other languages
German (de)
Inventor
Dr Ernst Wenk
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB102967D priority Critical patent/DE375475C/en
Application granted granted Critical
Publication of DE375475C publication Critical patent/DE375475C/en
Expired legal-status Critical Current

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
    • C09B63/00—Lakes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Description

Verfahren zur Herstellung wasser- und überdruckechter Farblacke. Nach den in der Pigmentfarbenindustrie üblichen Verfahren war es bisher nicht möglich, Naphtholgelb in wasser- und überdruckechte Farblacke überzuführen. Der in der Tapetenindustrie zum Leimen der Druckfarben vorwiegend verwendete alkalische Pflanzenleim spaltet den üblichen Naphtholgelblack und bewirkt hierdurch sowohl Anbluten von aufgedrucktem Weiß wie auch das gefürchtete Durchschlagen. Diese Nachteile standen einer weitgehenden Verwendung von Naphtholgelb, z. B. für die Tapetenfabrikation, im Wege.Process for the production of water- and overprint-proof colored lacquers. To The usual processes in the pigment industry have so far not been able to To convert naphthol yellow into water- and overprint-proof colored lacquers. The one in the wallpaper industry The alkaline vegetable glue mainly used to glue the printing inks splits the usual naphthol yellow lacquer and thereby causes both staining of printed matter White as well as the dreaded penetration. These disadvantages were far-reaching Use of naphthol yellow, e.g. B. for wallpaper production, in the way.

Es wurde nun gefunden, daß man wasser-und überdruckechte Farblacke von Naphtholgelb erhält, wenn man den Farbstoff in Gegenwart kieselsaurer Salze von Erdalkalien, einschließlich des Magnesiums, vorteilhaft bei höherer Temperatur durch Erdalkalisalze, zweckmäßig zusammen mit Aluminiumhydroxyd, zur Fällung bringt. Die nach dem neuen Verfahren erzeugten Farblacke besitzen außerdem noch eine bessere Lichtechtheit gegenüber solchen nach dem bisherigen Verfahren. Man kann fertige Erdalkalisilikate verwenden oder zweckmäßig solche bei der Bildung der Farblacke durch Fällung erzeugen. Beispiel. 25 kg Schwerspat, 6 kg schwefelsaure Magnesia, 2,5 kg gebrannter Kalk, mit 50 1 Wasser abgelöscht, 5 kg Wasserglas, 38 bis 40° B8 -I- 50 1 Wasser, z kg schwefelsaure Tonerde, 6 kg Naphtholgelb S für Lack, z4 kg Chlorbarium kochend ausfällen und 5 Minuten kochen lassen, einige Zeit rühren und dann erkalten lassen. Man erhält so farblose Abwässer.It has now been found that water- and overprint-fast colored lacquers of naphthol yellow are obtained if the dyestuff is precipitated in the presence of silicic acid salts of alkaline earths, including magnesium, advantageously at a higher temperature using alkaline earth metal salts, advantageously together with aluminum hydroxide. The colored lacquers produced by the new process also have better lightfastness than those produced by the previous process. Ready-to-use alkaline earth silicates can be used or it is expedient to produce them by precipitation during the formation of the colored lacquers. Example. 25 kg barite, 6 kg magnesia sulfuric acid, 2.5 kg quick lime, quenched with 50 1 water, 5 kg water glass, 38 to 40 ° B8 -I- 50 1 water, z kg sulfuric alumina, 6 kg naphthol yellow S for paint, Precipitate about 4 kg of chlorobarium at the boil and let it boil for 5 minutes, stir for a while and then let it cool down. Colorless wastewater is obtained in this way.

Die so erhaltenen Naphtholgelblacke zeigen die Eigenschaft, mit Pflanzenleim aufgestrichen nicht durchzuschlagen und sich mit Weiß überdrucken zu lassen, ohne es anzufärben. Außerdem haben sie eine vorzügliche Lichtechtheit.The naphthol yellow lacquers obtained in this way show the property with vegetable glue when painted on, not to bleed through and to be overprinted with white without to color it. They also have excellent lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung wasserechter und überdruckechter Farblacke aus Naphtholgelb, dadurch gekennzeichnet, daß man den Farbstoff in Gegenwart kieselsaurer Salze der Erdalkalien einschließlich des Magnesiums, durch Erdalkalisalze zweckmäßig zusammen mit Aluminiumhydroxyd; zur Fällung bringt. PATENT CLAIM: A process for the production of water-resistant and overprint-fast colored varnishes from naphthol yellow, characterized in that the dyestuff is expediently combined with aluminum hydroxide in the presence of silicic acid salts of alkaline earths including magnesium, by alkaline earth salts; brings about precipitation.
DEB102967D 1921-12-30 1921-12-30 Process for the production of water-proof and overprint-proof colored lacquers Expired DE375475C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB102967D DE375475C (en) 1921-12-30 1921-12-30 Process for the production of water-proof and overprint-proof colored lacquers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB102967D DE375475C (en) 1921-12-30 1921-12-30 Process for the production of water-proof and overprint-proof colored lacquers

Publications (1)

Publication Number Publication Date
DE375475C true DE375475C (en) 1923-05-14

Family

ID=6990595

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB102967D Expired DE375475C (en) 1921-12-30 1921-12-30 Process for the production of water-proof and overprint-proof colored lacquers

Country Status (1)

Country Link
DE (1) DE375475C (en)

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