DE432110C - Coloring process for cellulose esters - Google Patents

Coloring process for cellulose esters

Info

Publication number
DE432110C
DE432110C DEB104559D DEB0104559D DE432110C DE 432110 C DE432110 C DE 432110C DE B104559 D DEB104559 D DE B104559D DE B0104559 D DEB0104559 D DE B0104559D DE 432110 C DE432110 C DE 432110C
Authority
DE
Germany
Prior art keywords
cellulose esters
coloring process
azo dyes
bisulfite
parts
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
DEB104559D
Other languages
German (de)
Inventor
Dr Fritz Guenther
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.)
JG Farbenindustrie AG
Original Assignee
JG 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 JG Farbenindustrie AG filed Critical JG Farbenindustrie AG
Priority to DEB104559D priority Critical patent/DE432110C/en
Application granted granted Critical
Publication of DE432110C publication Critical patent/DE432110C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/34Material containing ester groups
    • D06P3/40Cellulose acetate
    • D06P3/42Cellulose acetate using dispersed dyestuffs

Landscapes

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

Description

Färbeverfahren für Celluloseester. Das Färben von Celluloseestern bietet bekanntlich praktisch große Schwierigkeiten. Beispielsweise hat Acetylcellulose weder für substantive noch für saure Farbstoffe, von einzelnen Ausnahmen abgesehen, Affinität.Coloring process for cellulose esters. The dyeing of cellulose esters is known to offer great practical difficulties. For example, has acetyl cellulose neither for substantive nor for acidic dyes, apart from a few exceptions, Affinity.

Es wurde nun gefunden, daß sich zum Färben von Celluloseestern die Aldehydbisulfitverbindungen schwer- oder unlöslicher Azofarbstoffein vorzüglicher Weise eignen, wobei der Aldehydbisulfitrest (z. B.-CH2-OSOZNa) im Molekül einmal oder mehrfach vorhanden sein kann. Verwendet man Azofarbstoffe, die den Aldehydbisulfitrest an einer weiterdiazotierbaren Aminogruppe im Molekül gebunden enthalten, wie z. B. die Kombination p-Nitranilin-anilinacetaldehvdbisulfit von folgender Zusammensetzung: so kann die gefärbte Faser dianotiert und mit den verschiedensten Chromogenen entwickelt werden.It has now been found that the aldehyde bisulfite compounds of sparingly or insoluble azo dyes are particularly suitable for coloring cellulose esters, the aldehyde bisulfite radical (e.g. —CH2-OSOZNa) being present once or several times in the molecule. If azo dyes are used which contain the aldehyde bisulfite radical bonded to a further diazotizable amino group in the molecule, such as. B. the combination of p-nitroaniline-aniline acetaldehyde bisulfite of the following composition: so the colored fiber can be dianotized and developed with the most varied of chromogens.

Beispiel. 5o Teile Acetylcellulose werden I Stunde lang bei etwa 6o° mit einer Lösung von 1,5 Teilen des nach den üblichen Methoden hergestellten Farbstoffes aus dianotiertem p-Nitranilin und der Formaldehydbisulfitverbindung des Monomethylanilins in iooo Volumenteilen Wasser unter Zusatz von io Volumenteilen einer Igprozentigen Sodälösung gefärbt, wobei man nach dem Trocknen eine Färbung von tieforangenem Ton erhält. Analog verfährt man bei dem Farbstoff aus dianotiertem p-Nitranilin und der Acetaldehydbisulfitverbindung des Anilins.Example. 50 parts of acetyl cellulose are kept at about 60 ° for 1 hour with a solution of 1.5 parts of the dye prepared by conventional methods from dianotized p-nitroaniline and the formaldehyde bisulfite compound of monomethylaniline in 100 parts by volume of water with the addition of 10 parts by volume of an Ig percent Dyed soda solution, which, after drying, turns a deep orange shade receives. The same procedure is used for the dianotized p-nitroaniline and dye the acetaldehyde bisulfite compound of aniline.

Verwendet man an Stelle der Acetylcellulose etwa die gleiche Menge Nitrocellulose, so erhält man eine orangerote Färbung.Use about the same amount instead of acetyl cellulose Nitrocellulose, an orange-red color is obtained.

Claims (1)

PATENT-ANSPRUCII: Färbeverfahren für Celluloseester, gekennzeichnet durch die Verwendung von Aldehydbisulfitverbindungen unlöslicher oder schwerlöslicher Azofarbstoffe, außer den Formaldehydbisulfitverbindungen von Azofarbstoffen mit primären Aminogruppen.PATENT-ANSPRUCII: dyeing process for cellulose esters, marked the use of aldehyde bisulfite compounds makes them more insoluble or sparingly soluble Azo dyes, except for the formaldehyde bisulfite compounds of azo dyes with primary amino groups.
DEB104559D 1922-04-26 1922-04-26 Coloring process for cellulose esters Expired DE432110C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB104559D DE432110C (en) 1922-04-26 1922-04-26 Coloring process for cellulose esters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB104559D DE432110C (en) 1922-04-26 1922-04-26 Coloring process for cellulose esters

Publications (1)

Publication Number Publication Date
DE432110C true DE432110C (en) 1926-07-23

Family

ID=6991083

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB104559D Expired DE432110C (en) 1922-04-26 1922-04-26 Coloring process for cellulose esters

Country Status (1)

Country Link
DE (1) DE432110C (en)

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