D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
D06P 3/82 (2006.01) D06P 1/62 (2006.01) D06P 1/653 (2006.01) D06P 3/24 (2006.01)
Patent
CA 2685894
Systems and methods for dyeing inherently flame resistant fibers, and particularly aramid fibers, without the use of accelerants or carriers. Fabrics made from aramid fibers or blends thereof are immersed in an aqueous dye bath that includes at least one dye and at least one acid component. The temperature of the dye bath is increased from room temperature to a suitable temperature (e.g., between approximately 285°F to 400°F) capable of rendering the aramid fibers less crystalline so that the fibers can accept the dye. In this way, suitable color yields may be obtained without the use of accelerants or carriers as have been required in the past.
La présente invention concerne des systèmes et des procédés de teinture de fibres intrinsèquement ignifuges, notamment des fibres aramides, sans utilisation d'accélérants ou d'entraîneurs. Des tissus fabriqués à partir de fibres aramides ou des mélanges de celles-ci sont immergés dans une solution de teinture aqueuse comprenant au moins un colorant et au moins un constituant acide. La température de la solution de teinture est élevée depuis la température ambiante jusqu'à une température appropriée (par exemple, entre environ 280°F et 400°F) capable de rendre les fibres aramides moins cristallines de sorte que les fibres puissent accepter la teinture. Ainsi, on peut obtenir de rendements de couleur appropriés sans utiliser d'accélérants ou d'entraîneurs comme c'était le cas dans l'art antérieur.
Riggins Phillip H.
Truesdale Rembert Joseph
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Southern Mills Inc.
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