Method for preparing regenerated cellulose fiber dyeable with natural dye

• Main Authors: LU, Peng, YUAN, Hongbing, MAO, Jun, CHEN, Hongxia
• Format: Patent
• Language: English
• Published: 03.12.2020
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

Disclosed is a method for preparing a regenerated cellulose fiber which is dyeable with a natural dye, comprising firstly adding a chitosan solution to a viscose spinning solution to prepare a viscose spinning solution-chitosan mixed solution, then adding a tannic acid solution, mixing and then fully reacting same, and finally subjecting the resulting tannic acid viscose spinning solution to wet spinning so as to prepare the regenerated cellulose fiber which is dyeable with a natural dye. After dyeing the prepared regenerated cellulose fiber with a natural dye, yarns or fabrics prepared with the fiber have better various color fastnesses, and can satisfy production and apparel use requirements.