METHOD OF DYEING CELLULOSE REGENERATED ELONGATED MEMBER

PCT No. PCT/GB91/00768 Sec. 371 Date Oct. 15, 1993 Sec. 102(e) Date Oct. 15, 1993 PCT Filed Apr. 24, 1992 PCT Pub. No. WO92/19807 PCT Pub. Date Nov. 12, 1992Dyed cellulosic regenerated elongate members such as fibers are produced by dyeing the regenerated members with a cationic direct dye after for...

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1. Verfasser:	DZHEJMS MARTIN TEJLOR
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BASIC ELECTRIC ELEMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CURRENT COLLECTORS DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM DYEING OR PRINTING TEXTILES ELECTRICITY FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR IMPREGNATING OR COATING OF PAPER LAUNDERING LINE CONNECTORS NATURAL OR ARTIFICIAL THREADS OR FIBRES PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPINNING TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OF TEXTILES OR THE LIKE
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Zusammenfassung:	PCT No. PCT/GB91/00768 Sec. 371 Date Oct. 15, 1993 Sec. 102(e) Date Oct. 15, 1993 PCT Filed Apr. 24, 1992 PCT Pub. No. WO92/19807 PCT Pub. Date Nov. 12, 1992Dyed cellulosic regenerated elongate members such as fibers are produced by dyeing the regenerated members with a cationic direct dye after formation but before first drying. A method of producing the dyed elongate members comprises forming a dope containing cellulose or a cellulose compound in solution in a solvent, extruding the dope through at least one orifice into a bath containing water to form an elongate extrudate from which solvent is dissolved and/or the cellulose compound is converted to cellulose so as to form the elongate member, dyeing the formed but never dried elongate member with a cationic direct dye and optionally also with an anionic direct dye and then drying for the first time the dyed elongate member.