DE948594C - Process for coloring molded products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers - Google Patents

Process for coloring molded products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers

Info

Publication number
DE948594C
DE948594C DER12974A DER0012974A DE948594C DE 948594 C DE948594 C DE 948594C DE R12974 A DER12974 A DE R12974A DE R0012974 A DER0012974 A DE R0012974A DE 948594 C DE948594 C DE 948594C
Authority
DE
Germany
Prior art keywords
polyacrylonitrile
acrylonitrile
fibers
containing copolymers
foils
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
DER12974A
Other languages
German (de)
Inventor
Herbert Rummler
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.)
Cassella Farbwerke Mainkur AG
Original Assignee
Cassella Farbwerke Mainkur 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 Cassella Farbwerke Mainkur AG filed Critical Cassella Farbwerke Mainkur AG
Priority to DER12974A priority Critical patent/DE948594C/en
Application granted granted Critical
Publication of DE948594C publication Critical patent/DE948594C/en
Expired legal-status Critical Current

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
    • D06P3/70—Material containing nitrile groups
    • D06P3/704—Material containing nitrile groups using metallisable or mordant dyes or dyeing by cupro-ionic method

Description

Verfahren zum Färben von Verformungsprodukten (Fasern oder Folien) von Polyacrylnitril und acrylnitrilhaltigen Mischpolymerisaten Es ist bekannt, Verformungsprodukte von Polyacrylnitril und acrylnitrilhaltigen Mischpolymerisaten mit anion,ischen Farbstoffen (Säurefarbstoffen, substantiven Farbstoffen, Leukoestersalzen von Küpenfarbstoffen u. dgl.) in Gegenwart von Kupfer(II)-Verb,indungen und geeigneten Reduktionsmitteln zu färben. Die für diesen Zweck vorgeschlagenen Reduktionsmittel, z. B. Natriumformaldehydsulfoxylat oder Hydroxylaminsulfat, besitzen jedoch den Nachteil, die reduktionsempfindlichen Farbstoffe zu beeinflussen und die Reduktion der Kupfer(II)-Verbindungen teilweise bis zum metallischen Kupfer zu bewirken.Process for coloring deformation products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers It is known that molding products of polyacrylonitrile and acrylonitrile-containing copolymers with anionic Dyes (acid dyes, substantive dyes, leuco ester salts of vat dyes and the like) in the presence of copper (II) compounds and suitable reducing agents to color. The reducing agents proposed for this purpose, e.g. B. sodium formaldehyde sulfoxylate or hydroxylamine sulfate, but have the disadvantage that they are sensitive to reduction To influence dyes and the reduction of the copper (II) compounds partially to cause metallic copper.

Es wurde nun gefunden, daß sich die genannten Nachteile vermeiden lassen, wenn man bei ,dem Verfahren zum Färben von Verformungsprodukten (Fasern oder Folien) von Polyacrylnitril und acrylnitril'haltigen Mischpolymerisaten mittels anionischer Farbstoffe, Kupfer(II) -Verbindungen und Reduktionsmitteln als Reduktionsmittel Sulfitablauge verwendet. Dieses Reduktionsmittel liefert außerdem auch ohnebesondere Vorsichtsmaßnahmen egale Färbungen, während z. B. das Hy droxyläminsulfatverfahren im Interesse guter Egalität besondere Vorsichtsmaßnahmen, z. B. die tropfenweise Zugabe des Hydroxylam.insulfats, erfordert, was den Färbeprozeß kompliziert.It has now been found that the disadvantages mentioned are avoided let, if one with, the process of dyeing deformation products (fibers or films) of polyacrylonitrile and acrylonitrile-containing copolymers by means of anionic dyes, copper (II) compounds and reducing agents as reducing agents Used sulphite liquor. This reducing agent also delivers without special Precautions level dyeings, while z. B. the Hy droxyläminsulfatverfahren in the interest of good equality special precautionary measures, e.g. B. the drop by drop Addition of the hydroxylamine sulfate requires, which complicates the dyeing process.

Beispiel (Die Prozentzahlen beziehen sich auf das zu färbende Fasermaterial.) M;,n setzt mit io°/o Kupfersulfat und einer Menge von Sulfitablauge, welche 2o0/9 Trockensubstanz entspricht, ein Färbebad un, wobei sich ein pH-Wert von etwa q. einstellt. Dann wird 5 % Echtrot AV (Schultz, Farbstofftabellen, Bd.I, 7. Auflage, S.92, Nr. 2o6) in Wasser gelöst und dem Färbebad zugefügt. Man geht mit der Ware ein und treibt allmählich zum Kochen, wobei das Färbegut ausreichend bewegt wird. Bei Erreichen der Kochtemperatur hat sich im Färbebad ein pH von a bis 3 eingestellt, der optimale Färbungen ermöglicht. Man kocht ungefähr i Stunde.Example (The percentages relate to the fiber material to be dyed.) M;, n sets a dyebath with 10% copper sulphate and an amount of sulphite waste liquor corresponding to 20% dry matter, with a pH of about q . adjusts. Then 5% Fast Red AV (Schultz, Dye Tables, Volume I, 7th Edition, p.92, No. 2o6) is dissolved in water and added to the dye bath. You come in with the goods and gradually drive to the boil, the dyed goods being sufficiently agitated. When the boiling temperature is reached, a pH of a to 3 has set in the dyebath, which enables optimal dyeing. You cook for about an hour.

Man erhält so eine leuchtend rote Färbung. Statt der Sulfitablauge selbst kann mit gleichem Erfolg auch das durch Verdampfung der Ablauge erhaltene Pulver verwendet wer den.A bright red color is obtained in this way. Instead of the sulphite waste liquor even that obtained by evaporation of the waste liquor can with the same success Powder used who the.

Claims (1)

PATENTANSPRUCH: Verfahren zum Färben von Verformungsprodukten (Fasern oder Folien) von P.olyacrylnitril und acrylnitrilhaltigen Mischpolymerisaten mittels anionischer Farbstoffe, Kupfer (II)-Verbindungen und Reduktionsmitteln, dadurch gekennzeichnet, daß als Reduktionsmittel Sulfitablauge verwendet wird.PATENT CLAIM: Process for dyeing deformation products (fibers or films) of polyacrylonitrile and acrylonitrile-containing copolymers by means of anionic dyes, copper (II) compounds and reducing agents, thereby characterized in that sulphite waste liquor is used as the reducing agent.
DER12974A 1953-11-17 1953-11-17 Process for coloring molded products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers Expired DE948594C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER12974A DE948594C (en) 1953-11-17 1953-11-17 Process for coloring molded products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER12974A DE948594C (en) 1953-11-17 1953-11-17 Process for coloring molded products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers

Publications (1)

Publication Number Publication Date
DE948594C true DE948594C (en) 1956-09-06

Family

ID=7398926

Family Applications (1)

Application Number Title Priority Date Filing Date
DER12974A Expired DE948594C (en) 1953-11-17 1953-11-17 Process for coloring molded products (fibers or foils) of polyacrylonitrile and acrylonitrile-containing copolymers

Country Status (1)

Country Link
DE (1) DE948594C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051787B (en) * 1955-10-15 1959-03-05 Prod Chim Ind S P C I Soc D Process for coloring structures made from polyacrylonitrile or copolymers made from acrylonitrile with other unsaturated compounds
DE1075994B (en) * 1956-10-17 1960-02-18 Rieter Joh Jacob & Cie Ag Brake for spinning or twisting spindles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051787B (en) * 1955-10-15 1959-03-05 Prod Chim Ind S P C I Soc D Process for coloring structures made from polyacrylonitrile or copolymers made from acrylonitrile with other unsaturated compounds
DE1075994B (en) * 1956-10-17 1960-02-18 Rieter Joh Jacob & Cie Ag Brake for spinning or twisting spindles

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