Method for dyeing fibrous material

Details Method for dyeing fibrous material Method for dyeing fibrous material

D - Textiles, Paper

06

P

D06P 3/02 (2006.01) D06P 1/649 (2006.01) D06P 3/24 (2006.01)

Patent

CA 2052236

A method for dyeing fibrous material is provided. The method includes contacting a fibrous material with a carrier and a dye soluble or dispersed with the carrier in a dyebath. The carrier comprises an N-substituted aromatic carbonamide or an N,N-disubstituted aromatic carbonamide or mixture thereof. The carrier system of the present can be advantageously utilized for improving dye and flame resistant properties of difficult to dye fibers such as aromatic polyamide fibers, polybenzimidazole fibers and aromatic polyimide fibers.

On présente une méthode pour colorer un matière fibreuse, consistant à mettre en contact une matière fibreuse avec un véhicule et un colorant soluble ou dispersé dans le véhicule, sous forme de bain colorant. Le véhicule comprend un carbonamide aromatique avec substitution en N ou un carbonamide aromatique avec disubstitution en N,N, ou un mélange des deux. Le véhicule de la présente invention peut être utilisé avantageusement pour améliorer les propriétés de coloration et d'ignifugation de fibres difficiles à colorer, comme les fibres de polyamide aromatique, les fibres de polybenzimidazole et les fibres de polyimide aromatique.

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