Stripping Agent for Vat Dyes

详情

Stripping Agent for Vat Dyes
DA-BS**0 is a stripping and leveling agent which has a strong affinity with cotton fiber. It is suitable for vat, sulfur, reactive and direct dyes. Besides, it is a retarding agent for vat and direct dyes. Also it can prevent white staining when washing after direct and reactive printing.

 Property

Appearance        liquid
pH value           6.**7.0
Density           1.*2g/cm3 (*0°C)
Solubility         freely soluble in water
Stability          stable to acid, alkali, electrolyte and hard water.

 Application

  1.   Stripping after dyeing and printing

 For vat dyes

  Significant results can be achieved when add DA-BS**0 to stripping bath of vat dyes. While the stripping effect depend on the amount of DA-BS**0. Recommended dosage for stripping is as follows when in big liquid ratio.

               **5    g/L         DA-BS**0

   As refer to deep color, suggest adding protective colloid, such as Dekol SN-S (2g/L) or dispersing agents such as Setamol WS or Uniperol AC (2g/L) to avoid precipitation. If it is hard water, we recommend adding Dekol SN-S or Trilon TB. The stripping temperature should be as high as possible, but can not exceed *5°C in order to maintain the stability of the dye bath.

     Recipe:            ****5   mL/L       Sodium hydroxide

           **6     g/L         Sodium hydrosulfite

           **5     g/L         DA-BS**0

Keep for ****0mins at ****5°C(checkout the reduction state), then warm washing, cold washing.

The greater the dye bath, the smaller risk of dye precipitation in DA-BS**0 solution.

          Light color           1:5    Medium color         1:8 to 1:*0

           Deep color           1:*0 or more greater