The Use of Non-aqueous Solvents in Dyeing. III – Dyeing of Polyester and Cotton-Polyester Fibre Blends by the Dacsol 2 Process

A polyester package dyeing system based upon water and 2-ethoxyethanol is described. The process is similar to and a natural development of the silicone-perchloroethylene system discussed in Part I. It is a bicomponent homogeneous system. Water replaces silicone as the bulking medium or antisolvent and 2-ethoxyethanol replaces perchloroethylene as the dye solvent. Potentially it is a more versatile system than Dacsol, e.g. cotton-polyester fibre blends can be dyed. High yields result from a low 2-ethoxyethanol:fibre ratio. Existing disperse dyes in diluent-free or commercial forms are suitable. Water quality, however, is important