Easily dyeable meta-type wholly aromatic polyamide fiber

Details Easily dyeable meta-type wholly aromatic polyamide fiber Easily dyeable meta-type wholly aromatic polyamide fiber

D - Textiles, Paper

01

F

D01F 6/60 (2006.01)

Patent

CA 2738823

There is provided an easily dyeable meta-type wholly aromatic polyamide fiber excellent in dyeability and acid resistance, and having a very small residual solvent content. The components or conditions of the coagulation bath are appropriately adjusted so as to achieve a coagulated form not having a skin core, plasticization drawing is performed at a specific ratio, and after completing a washing step, a dry heat treatment is performed at a specific temperature.

L'invention concerne une fibre de polyamide entièrement aromatique à méta-forme aisée à colorer, qui présente une excellente aptitude à la coloration et une excellente résistance aux acides et dont la teneur en solvant résiduel est extrêmement basse. Les composants d'un bain de coagulation ou les conditions de coagulation sont contrôlés de manière à obtenir une forme coagulée qui ne présente pas une structure à âme et peau. La fibre ainsi obtenue est étirée à l'état plastique à un taux d'étirage particulier. Après une étape de nettoyage, un traitement thermique à sec est conduit à une température particulière.

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