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DE651042C - Process for dyeing leather - Google Patents

Process for dyeing leather

Info

Publication number
DE651042C
DE651042C DEI54997D DEI0054997D DE651042C DE 651042 C DE651042 C DE 651042C DE I54997 D DEI54997 D DE I54997D DE I0054997 D DEI0054997 D DE I0054997D DE 651042 C DE651042 C DE 651042C
Authority
DE
Germany
Prior art keywords
leather
dyeing
dye
dyeing leather
acid
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
DEI54997D
Other languages
German (de)
Inventor
Dr Hans Krzikalla
Dr Heinz Pardon
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 DEI54997D priority Critical patent/DE651042C/en
Application granted granted Critical
Publication of DE651042C publication Critical patent/DE651042C/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
    • C09B19/00—Oxazine dyes
    • 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
    • C09B51/00—Nitro or nitroso dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/32—Material containing basic nitrogen containing amide groups leather skins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)

Description

Verfahren zum Färben von Leder Es wurde gefunden, daß mari Leder auf besonders vorteilhafte Weise färben kann, wenn mm hierzu als Farbstoffe Nitrooxazinsulfonsäuren oder deren Substitutionsprodukte verwendet. Derartige- Farbstoffe sind beispielsweise nach dem aus der Patentschrift 200736 bekannten Verfahren leicht zugänglich. Sie zeichnen sich durch ein vorzügliches Durchfärbevermögen aus. Nach den üblichen Färbeverfahren erzielt man meist schon mit i °/o des Farbstoffes eine vollständige Durchfärbung des Leders. Die Färbungen besitzen eine sehr gute- Säure-und Alkalibeständigkeit.Process for dyeing leather It has been found that mari can dye leather in a particularly advantageous manner if the dye used for this purpose is nitrooxazine sulfonic acids or their substitution products. Such dyes are easily accessible, for example, by the method known from patent specification 200736. They are characterized by an excellent color penetration. With the usual dyeing processes, a complete dyeing of the leather can usually be achieved with just 1 / o of the dye. The dyeings have very good acid and alkali resistance.

Man hat bereits vorgeschlagen, Leder mit nitro- und sulfonsäuregruppenhaltigen Azofarbstoffen zu färben. Die Nitrooxazinsulfonsäuren sind zum Färben von Leder besser geeignet, da sie eine bessere Säureechtheit als die genannten Azofarbstoffe besitzen. Beispiel i Entsäuertes Chromleder 'wird im Faß im Flottenverhältnis i ::2 mit i °/o des aus 2-Amino-4-methyl-i-oxybenzol-6-sulfonsäure und z, q.-Dinitro-i-Chlorbenzol-6-sulfonsäure hergestellten Oxazins 20 Minuten lang bei 6o° C gefärbt. Man erhält so ein in gelbbraunen Tönen von guter Säure- und Alkalibeständigkeit vollständig durchgefärbtes Leder.It has already been proposed to use leather containing nitro and sulfonic acid groups To dye azo dyes. The nitrooxazine sulfonic acids are used for dyeing leather more suitable because they have better acid fastness than the azo dyes mentioned own. Example i Deacidified chrome leather 'is in the barrel in the liquor ratio i :: 2 with i% des from 2-amino-4-methyl-i-oxybenzene-6-sulfonic acid and z, q-dinitro-i-chlorobenzene-6-sulfonic acid stained oxazine for 20 minutes at 60 ° C. So one gets a yellow-brown one Shades of good acid and alkali resistance, fully dyed leather.

Verwendet man statt des genannten Farbstoffs ein durch Behandeln von 2, 6-Dinitro-2'-oxy-5'-methyldiphenylamin-q., 3'-disulfonsäure mit Natronlauge hergestelltes Oxazin, so wird das Leder in Bordotönen durchgefärbt.If instead of the dye mentioned, a by treating of 2,6-Dinitro-2'-oxy-5'-methyldiphenylamine-q., 3'-disulfonic acid prepared with sodium hydroxide solution Oxazine, this is how the leather is dyed in Bordeaux tones.

Mit Farbstoffen gleicher Zusammensetzung, in denen lediglich die Methylgruppe durch Chlor ersetzt ist, erhält man ähnliche Farbtöne auf Leder. Beispiel 2 Man färbt Leder unter den im Beispiel i beschriebenen Bedingungen mit einem nach Beispiel 5 der Patentschrift 200 736 hergestellten Farbstoff und erhält so eine kräftig rotviolette, säure- und alkalibeständige Durchfärbung.With dyes of the same composition, in which only the methyl group is replaced by chlorine, similar colors are obtained on leather. Example 2 Man dyes leather under the conditions described in example i with one according to example 5 of the patent specification 200 736 produced dye and thus receives a strong red-violet, acid and alkali resistant dyeing.

Claims (1)

PATENTANSPRUCH: Verfahren' zurrt Färben von Leder, dadurch gekennzeichnet, daß man Nitrooxazinsulfonsäuren oder deren Substitutionsprodukte verwendet.PATENT CLAIM: Process for dyeing leather, characterized in that that one uses nitrooxazine sulfonic acids or their substitution products.
DEI54997D 1936-05-14 1936-05-14 Process for dyeing leather Expired DE651042C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI54997D DE651042C (en) 1936-05-14 1936-05-14 Process for dyeing leather

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI54997D DE651042C (en) 1936-05-14 1936-05-14 Process for dyeing leather

Publications (1)

Publication Number Publication Date
DE651042C true DE651042C (en) 1937-10-06

Family

ID=7194011

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI54997D Expired DE651042C (en) 1936-05-14 1936-05-14 Process for dyeing leather

Country Status (1)

Country Link
DE (1) DE651042C (en)

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