Sarascour-RG | Anti Thermal Yellowing Agent

Product Information

Sarascour-RG is a speciality finishing agent to prevent yellowing of fabrics and knits made from polyamide, lycra and their blends during heat setting, finishing and moulding. Sarascour-RG is recommended for finishing of pale shades as well as for fabrics treated with optical brightening agents. It also prevents oxidation of end amino groups of polyamide during heat treatment as well as yellowing due to NOX fumes indirectly heated stenters.

Key Features & Benefits
Key Features Benefits
Prevents yellowing of textiles made from polyamide,lycra and their blends
Retains the value of fabrics.
Protects from yellowing due to heat treatment
Heat setting, as well as moulding, does not affect shade or whiteness.
General Characteristics
Physical appearance
Pale yellow liquid
Ionic nature Nonionic
pH of 1% solution 7 +/- 1
Miscibility Miscible with water
Stability Stable to dilute acids and dilute alkalies
Compatibility Compatible with anionic, cationic and nonionic products

Substrate Polyamide, Polyamide/Lycra, Polyester/Lycra.

  • Dosage : 20-40 g/l
  • Pick-up : 65-70%
  • Bath pH : 5.0-5.5
  • Heat setting : 180-190 deg.C, 30-60 sec.

After heat setting, remove unfixed dye chemical by the following recipe

  • Saralan-Jet LF / Celldet-R : 0.5-1 g/l
  • Sodium hydrosulphite : 1-2 g/l
  • Soda Ash : 0.5-2 g/l
  • Temp : 80-90 deg.C, 30 mins.

Rinse, neutralise, dry and carry out optical brightening treatment by padding if required.


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 : 8 months from the date of manufacturing, if stored under controlled conditions.

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

Related Products

Product Name Short Description Description

Phenolic Yellowing Preventer

A concentrated product to prevent phenolic yellowing of lycra, polyamide and polyester fabrics