Process for the coloration of thermoplastic polymers and polycondensates in the mass with water-insoluble disazomethine compounds

US4265632A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Theodor Papenfuhs · Frankfurt, DE
• Wolfgang Teige · Kelkheim, DE

Key dates

• Filing date: Nov 21, 1979
• Grant date: May 5, 1981
• Expiry date: Nov 21, 1999

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F1/06
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

For coloring in the mass and spin dyeing water-insoluble thermoplastic polymers and polycondensates, especially polyesters, nickel complex disazomethine compounds are used having the general formula (1) ##STR1## in which A and B have the same meaning or are different from each other and each is an isocyclic or heterocyclic residue. The coloring compounds can be added to the polymeric material without previous dispersion. They are dissolved in said material in molecular disperse form so that generally brilliant and clear colorations are obtained. In spin dyeing the filaments substantially retain their high strength and drawing properties; abrasion and clogging of the nozzles or filters do not occur. The colorations are distinguished by a high color strength as well as by high fastnesses to light and to weather and by a good stability in thermofixation.