MST LIQ FOR CELLULOSICS
(Optical brightener for cellulose & polyamide fiber )
Chemical Character : Stilbene derivative
Appearance : Brownish yellow Liquid
Ionic Character : Anionic
pH of 1.0% solution : 8.0 +/-1 1100/1150 g/l
Bulk Density : Hypochlorite bleach – Not Stable
Chlorite bleach – Not Stable
Peroxide bleach – Very Good
Hydrosulphite bleach – Very Good
Stability with electrolyte – Very Good
pH stability – 2.0 -12.0
Stability to alkali – Good
Stability to water hardness – Good
MST Liq. is an Optical brightener with a very low affinity and a brilliant white shade. Cotton fiber can be brightened with MST Liq in padding mangle procedure. Due to its stability in high-grade treatment liquors, MST Liq is suitable for neutral and highly acidic cross-linking procedures and finishing liquors.
MST Liq can be dissolved by pouring cold water over it. The diluted solutions or the prepared stock solutions must be protected from direct light.
30 g/l to 80 g/l reactant resin
- g/l to 20 g/l Catalyst
0.5 g/l to 10 g/l MST Liq Impregnate, liquor pick-up: about 70%
Drying at 140C
For polyamide fiber
Exhaust method or application in the reductive bleach
0.1% to 1.0% MST liq
- g/l 6.0 g/l reducing agents 0.5% to 1.0% Acetic acid 30 minute at 98 C Treatment time rinse hot and cold.
NOTE: Our technical recommendations are believed to be correct. But suitability must be checked before individual application. We cannot accept any responsibility for application and process methods which are beyond our control.