Studies on the Stabilities of Dyes in One Bath Dyeing Systems of Polyester/cotton Blends with Disperse Dyes/Reactive Dyes (II) Decomposition of Dyes in One Bath Dyeing Conditions

폴리에스테르/면 혼방품-분산염료/반응염료 1욕 염색계에서의 염료의 안정성에 관한 연구(II) -1욕 염색 조건에서 염료의 분해-

Decomposition of disperse dyes in alkaline dyebath was measured using thin-layer chromatography. The stability of reactive dyes in aqueous solution with and without disperse dyes was studied by measuring hydrolysis rate of the dye at various temperature and pH condition. Disperse dyes were decomposed in reactive dyeing condition and the tendency of decomposition varied significantly according to the structure of the dyes. The presence of disperse dye decreased the amounts of hydrolyzed reactive dye in one bath dyeing system.