Migration Inhibitor for Cotton Dyeing
A carboxymethyl cellulose (CMC)-based migration inhibitor designed to prevent dye migration during drying in pad-dry-cure and cold pad-batch dyeing of cotton with reactive dyes. It forms a temporary viscous network in the padded fabric to fix dye in position until fixation is complete. Essential for producing level, blotch-free continuous dyed cotton fabric.
Technical Specifications
| appearance | White to off-white powder |
| pH (1% solution) | 7–9 |
| active content (%) | ≥85 |
| substitution degree (DS) | 0.7–0.9 |
| viscosity (1% solution, mPa·s) | 500–3000 |
Applications
- Pad-dry-cure continuous reactive dyeing of cotton woven fabric
- Cold pad-batch (CPB) process to prevent dye migration during rolling
- Thermosol dyeing of cotton-polyester blends
- Reducing edge-to-center shade variation in padded fabrics
- Print paste thickening for combined pad-print processes
Key Features
- Effective migration inhibition even at low add-on (5–15 g/L)
- Compatible with all reactive dyes and alkali fixation systems
- Washes off cleanly during soaping without residue on fabric
- Improves print sharpness in combined pad-print processes
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