Cationic Dyes

Cationic dyestuff is a group of water soluble dyes with bright colors. They ionize into cationic icons in water solution and dye the fibers by forming ionic linkage with the acid groups on the fibres through the function of electric charge. Cationic dyestuffs are mainly used in the dyeing and printing of polypropylene fabrics and dyeing of modified polyester and polyacrylics fibers.

Catonic dyes are classified into Six Groups-Common.X,M,SD,L and D according to their dyeing and printing properties on polyacrylonitrile fiber

 

1. Group Common Type :

Group Common type cationic dyes have good washing and light fastness, suitable for dyeing middle and dark color knitting underwear, bulk strips of non-woven polyacrylonitrile fiber and light, middle or dark color bulked yarn, they are also suitable for printing polyacrylonitrile blanket. This group includes Red 2GL, Light Yellow 7GL, Brilliant Blue RL, Pink FG, Turquoise Blue GB, Black WHL, etc.

2. Group X Type :

Group X type cationic dyes have good leveling properties for dyeing polyacrylonitrile bulked-yarn and its blends with wool. This group includes yellow X-8GL, Red X-GRL, Blue X-GRL, Black X-2RL, etc,.

3. Group M Type :

Group M type cationic dyes have good migration and leveling properties, suitable for dyeing polyacrylonitrile bulked-yarn and light or middle color textile of polyacrylonitrile fiber. This group includes Red M-RL, Yellow M-RL or Black M-RL, etc.

4. Group SD Type :

Group SD type cationic dyes have excellent behaviour of enduring high temperature while dyeing, suitable for dyeing and printing of polyacrylonitrile, Cationic Dyeable Polyester, and dyeing Polyacrylonitrile/wool blends in the same bath with acid dyes and acid-modified pelester/polyestre blends in the same bath with disperse dyes. This group includes Brilliant Red SD-GRL, Red SD-5GL, Yellow SD-5GL, Blue SD-GSL, Blue SD=RL, Black SD-RL and Black SD-O, etc..

5. Group L Type :

Group L Type cationic dyes are liquid non-dusting, and are capable of being mixed with water in any ratio, suitable for dyeing wet polyacrionitrile thread. This Group includes Brilliant Red L-5GN, Red LX-GRL, Golden Yellow LX-GL, Yellow LX-GRL, Blue LX-BL, Blue LX-GRL and Black LX-RL, etc..

6. Group D Type :

Group D type cationic dyes are dischargeable dyestuff, suitable for dischargeable printing as grounding, This Group includes Red D-TL, Yellow D-2RL, Orange D-BRL, Blue D-2GL and Black D-HO, etc..