Dyeing auxiliary and manufacturing method thereof and dyeing process using the same

• Main Authors: HUANG, MAO-QUAN, CHEN, ZHEN-JIA, HUANG, KE-ZAO, CHEN, XIN-MING, YANG, YOUNG
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2020
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM; DYEING OR PRINTING TEXTILES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF TEXTILES OR THE LIKE

The invention provides a dyeing auxiliary agent and manufacturing method thereof and dyeing process applied thereto. Low-molecular-weight polyethylene glycol (PEG) and citric acid as raw materials are synthesized into PEGCA anionic surfactant through reaction, and dye in dyeing and finishing wastewater is captured and brought into a cellulose fabric by utilizing an agglutination property of the auxiliary agent, so that the dyeing rate of the fabric in a dyeing process may be increased and the dye residual rate of the subsequently produced wastewater is reduced.