SARADYE-FN | Formaldehyde Free Dye-Fixing Agent

Product Information

Saradye-FN is a polyamine-based non-formaldehyde cationic dye-fixing agent for reactive dyes and direct dyes. Saradye-FN improves wash fastness, fastness to perspiration and water contact fastness. Saradye-FN shows a minimum effect on light fastness and on the shade of the treated material. Saradye-FN can be applied by exhaust as well as pad application.

Key Features & Benefits
Key Features Benefits
Formaldehyde free
Suitable for Oekotex and baby wear
Minimum effect on shade and light fastness
Rematching not require
No adverse effect on handle of fabric
Suitable for exhaust and pad application
Combined dyefixing and finishing possible
General Characteristics
Physical appearance
Colourless to yellow liquid
Ionic nature Cationic
pH of 1% solution 6 +/- 1
Miscibility Miscible with water
Stability Stable to dilute acids and unstable to dilute alkalies
Compatibility Compatible with cationic and nonionic products

Exhaust Process :

After thorough soaping to remove hydrolysed reactive dyestuff from dyed or printed material, treat in a fresh bath with below recipes :

  • Saradye-FN : 0.5-2%
  • Bath pH : 5-5.5
  • Bath Temp : 40 deg.C
  • Time : 15-30 min.

If finishing with cationic softener is to be carried out in the same bath, it is recommended to first carry out dye-fixing with 1/3rd quantity of required Saradye-FN under above conditions

followed by addition of cationic softener in the same bath under

the same conditions for 15-20 mins. followed by addition of a remaining quantity of Saradye-FN in the same bath and treatment to be carried out for further 15-20 min.

Continuous process :

  • Saradye-FN : 5-20 g/l
  • Pick-up : 65-70%
  • Bath pH : 5-5.5
  • Drying : 130-170 deg.C
Note : Check for colour tint in depth after dyeing.

Removal of a dye-fixing agent from dyed fabric:

Take 0.5-1% Celldet-R and treat the dye-fixed fabric at 95 deg. C for 20-30 min and drain the bath.

Cold wash for 10 min and drain.

Adjust the bath pH 4.5-5.0 using acetic acid and run for 5 min to ensure the

  • Bath pH 4.5-5.0 then add
  • 2.0-3.0%Saragen-SO
  • 1.0-1.5% Sarakol-RDL for 20-30 min and drain the bath.
  • Treat at 85-90 deg. C for 20-30 min and drain the bath.

  • Hot wash at 70 deg. C for 10 min and drain the bath.
  • Cold wash for 10 min and drain.

Storage : Store in cool, ventilated shed away from heat and direct sunlight. Storage temperature should not exceed 35 deg C.Close lids firmly to avoid contact with air and moisture.

Shelf Life : 9 months from the date of manufacturing, if stored under controlled conditions.

The above information is given in good faith and is without warranty

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