Novel method for dyeing cotton with vat dye

• Main Authors: ZHANG LULU, ZHANG KAI, WANG GUANGWU, FENG SHUO, LU YAJING, LIU LIU, WANG YU, YIN LIANBAO, XIA WENJING
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2020
• Subjects: DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM; DYEING OR PRINTING TEXTILES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE

The invention belongs to the technical field of textile dyeing, and particularly relates to a novel method for dyeing cotton with a vat dye. The method comprises the following steps that (1) dye liquor preparation is conducted, specifically, water, alcohol, a penetrating agent and the vat dye are uniformly mixed to obtain vat dye liquor; (2) the dyeing process is preformed, specifically, yarn is died through online dyeing equipment and spun into loosen cone yarn; (3) steam treatment is conducted, specifically, the cone yarn is subjected to steam treatment; (4) reduction-oxidation treatment isconducted, specifically, reduction treatment is conducted on the cone yarn subjected to steam treatment under alkaline condition, and then, the cone yarn is subjected to oxidation treatment through anoxidizing agent; and (5) washing and drying are conducted, specifically, washing neutralizing and drying treatment are conducted on the cone yarn subjected to reduction and oxidation. According to the method of the invention,