DE432110C - Coloring process for cellulose esters - Google Patents
Coloring process for cellulose estersInfo
- 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
Links
Classifications
-
- 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
- D06P3/34—Material containing ester groups
- D06P3/40—Cellulose acetate
- D06P3/42—Cellulose 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)
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) |
-
1922
- 1922-04-26 DE DEB104559D patent/DE432110C/en not_active Expired
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