Direct Dye Fixing Agent
CAS Number: 26590-05-6
Direct dye fixing agent is a cationic compound that crosslinks direct dye molecules on cellulosic fibers to form insoluble complexes, dramatically improving wash fastness and light fastness of direct-dyed cotton and viscose fabrics. It creates a protective polymer network around dye molecules, preventing dye bleeding during laundering. Widely used in the finishing of direct-dyed woven and knitted fabrics.
Technical Specifications
| pH | 4.0–6.5 |
| ionicity | Cationic |
| appearance | Colorless to pale yellow liquid |
| solubility | Miscible with water |
| active content | 30–45% |
Applications
- Cotton direct dyed fabric finishing
- Viscose and rayon color fastness improvement
- Exhaust bath post-treatment
- Continuous pad-steam fixation
- Yarn-dyed fabric wash fastness enhancement
Key Features
- Dramatically improves wash fastness of direct dyes
- Crosslinks dye molecules for insoluble complex formation
- Minimal effect on original color shade
- Easy application by exhaust or pad process
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CAS Number
26590-05-6
Category
Textile / Leather AdditivesAvailability
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