公开(公告)号：US20210324577A1

公开(公告)日：2021-10-21

申请号：US16346227

申请日：2018-10-25

申请人： SOOCHOW UNIVERSITY

发明人： Jiajie LONG ,  Chong CAI

IPC分类号： D06P1/00 ,  D06P1/94 ,  D06P1/16

摘要： The present invention relates to a waterless fiber dyeing method using a mixed fluid medium, in which supercritical carbon dioxide fluid medium is mixed with steam to form a mixed fluid medium, so that the waterless fiber dyeing effect to natural fibers is improved. The method of the invention can effectively modify the hydrophobic supercritical carbon dioxide fluid medium and improve the polarity thereof, thereby increasing the solubility of polar dye under the dyeing condition and simultaneously expanding the fiber. Thus, the present invention significantly improves the dyeability and dyeing behavior of the hydrophilic fibers in supercritical carbon dioxide fluids. The invention has the advantages of simple process, convenient operation and low energy consumption, and avoids consuming a large amount of water resources and discharging pollutants in the traditional process, and has the characteristics of environmentally friendly and high efficiency.

公开(公告)号：US20210355632A1

公开(公告)日：2021-11-18

申请号：US16346244

申请日：2018-11-06

申请人： SOOCHOW UNIVERSITY ,  SHANDONG GAOMIAN GROUP CO., LTD.

发明人： Jiajie LONG ,  Chong CAI ,  Chao GAO ,  Wei GAO

IPC分类号： D06P1/94 ,  D06P7/00 ,  D06P1/00 ,  D06M13/53

摘要： The invention discloses a waterless fiber dyeing method using supercritical carbon dioxide fluid as medium. Dry fibers are tightly loaded layer by layer in a porous yarn cage. After dyeing, the fibers are cleaned to remove unfixed dyes by an online way, thereby obtaining waterless dyed dry fiber products with good quality. With the supercritical carbon dioxide dyed by a dye, the invention can not only solve the problems of high energy consumption, high discharge, high pollution in the traditional dyeing process, but also obtain better dyeing effect. The invention has a simple process and convenient operation, which can effectively realize dry dyeing processing. The reaction is mild, avoiding the use of a large amount of water, heat and additives in high concentration, which has the features of being high efficiency and environmentally friendly.