Cationic dyes for CDP
Cationic Dyeable Polyester (CDP) is a special modified polyester fiber which is charged with anionic groups during polymerization. Having anionic groups, it can be dyed with cationic dyes giving good results with high brilliancy. The anionic dye sites make the fiber more amorphous causing the dyeing speed to increase when compared to dyeing regular polyester with disperse dyes. Depending on the fiber type, titre and lustre, the cationic dyes have a moderate to very low light fastness.
CDP has been an important fiber for some time, but the market demand for CDP is growing. Dynasty offers the most common classes of cationic dyes and ideal solutions for dyeing and printing of CDP.
Advantages of CDP, dyed with cationic dyes:
➤ Excellent wet fastness
➤ Brilliant shades
➤ Softer handle
➤ Multicolor effects on blends with PET
➤ Fixation times between 5 - 15 minutes
Dynasty Chemicals @ Chinaplas 2024, Shanghai 
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