Preserving Wool Fabric Properties During Dyeing Using Some Maleic Acid Derivatives

摘要

The protective effects on wool dyeing of three compounds containing activated double bonds are studied and compared with some commercially available products. Wool fabric is dyed under different conditions with Kiton Fast Blue CR 200 in the presence of N-(trifluorophenyl) maleamic acid, N-(1-naphthyl) maleimide, N-(trifluorophenyl) male-imide, Irgasol HTW NEW, and Miralan HTP. The consequences of the treatments are evaluated in terms of tensile strength, permanent set, and hygral expansion of the fabric samples. Optimal values of temperature, pH, and concentration of protective agent are determined for minimal changes in fabric physical properties during dyeing. The results show that two different chemical mechanisms can be used to explain changes to the physical properties that occur during the wool dyeing process.