SPECIFICATION:

PROPERTIES & USES:

1. AVCOLUX ETB produces excellent white effects of a neutral to bluish shade on
   polyester fibres, when applied by the thermosol process at temperatures of 160-
   2000C, or by the exhaust method, particularly under HT conditions at temperatures
   of 110-130°C.
2. Very good white effects are obtained even at fairly low temperatures due to the
   high fixation capacity of AVCOLUX ETB.
3. Excellent white effects are achieved on texturized polyester goods in the
   thermosol process at temperatures as low as 1500C,taking into account the normal
   dwell times. Generally speaking, however, such articles are thermosoled at
   temperatures between 170 and 180°C.
4. AVCOLUX ETB is very suitable for the brightening of the polyester component in
   polyester/cellulosic blends. The brightener can be applied to the fibre before,
   during or after peroxide bleaching.
5. Polyester/cotton goods brightened with AVCOLUX ETB can be subsequently bleached
   with chlorite without any problems, the product is fast to chlorite in this case.
   It is not recommended to apply AVCOLUX ETB during chlorite bleaching.
6. Very good effects are also achieved by applying AVCOLUX ETB together with resin
   finishing agents by the shock curing method to goods ready for finishing.
   Magnesium-chloride or a commercial shock curing catalyst are normally used as the
   catalyst for the reactant resins used in this process. Zinc salts such as zinc
   nitrate or zinc chloride may impair the white effect obtained with AVCOLUX ETB
   when shock curing is the method used. A preliminary trial is therefore
   recommended.
7. AVCOLUX ETB produces attractive white effects on burn-out articles especially if
   the burning-out process is followed by chlorite or hypochlorite bleaching.
8. 8. The white effects can be further improved by applying the optical
   brightener under HT conditions by the exhaust method in the presence of a
   dispersing agent such as AVCONAL BM. When brightening is carried out at
   temperatures near boiling, the addition of a suitable carrier produces somewhat
   higher degrees of whiteness than just a dispersing agent.
9. Over dosing of AVCOLUX ETB is causing yellowing of the optical brightening effect.

   REMARK:

   In all the guiding receips in the Application part apply AVCOLUX ETB or
   AVCOLUX ETB-N according to the required white effect.

APPLICATION: