YUVI-PES | Light-fastness improver for polyester

Product Information

Yuvi-PES is an UV absorber for polyester fibre and its blend. It protects against UV rays. It has no influence on the shade of dyeing. It is suitable for pad as well as exhaust application.

Key Features & Benefits
Key Features Benefits
Remarkably cut ultraviolet ray at 250-400 nm
UPF protection
No influence on human health
No influence on the softness of the treated material.
Does not affect the fabric feel
General Characteristics
Physical appearance
Creamish liquid
Ionic nature Non-Ionic
pH of 1% solution 6 +/- 1
Miscibility Miscible with water
Stability Stable to dilute acids and dilute alkalies
Compatibility Compatible with anionic, cationic non-ionic products

HT exhaust process

  • x % disperse dyes
  • 0.25-0.5 g/l Metanol DL (Conc) ( dispersing agent)
  • 0.5-1% Supergen KDF (levelling agent)
  • 1-3 % Yuvi-PES
  • 0.5-1 ml/l Saracid-RS for pH 4.5 - 5 
    • raise to 130 dec.C
    • dye for 30-60 min at 130 deg.C
    • When Yuvi-PES is applied alone (without dyes), 20-30 min at 130 deg.C.

Pad thermosol process

  • x % disperse dyes
  • 20-50 g/l Yuvi-PES
  • 10-20 g/l Sarasol AMC (migration inhibitor)
  • 2-5 g/l Celldet-R (wetting agent)
  • 1-2 ml/l Saracid-RS for pH 4.5-5 
    • pad with 70-80% pickup
    • dry at 110-130 deg.C
    • thermosol at 190-210 deg.C for 60-30 sec.

Yuvi-PES When applied alone (without dyes), 30 seconds at 190 deg.C for light woven fabrics.


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

Related Products

Product Name Short Description Description
YUVI-493 Light-fastness improver for polyester

A UV absorber for Polyester. It reduces the fibre damage due to photo chemical degradation. Yuvi 493 has very good dispersion stability and is therefore particularly suitable in exhaust method of application. Yuvi-493 has no influence on the shade of dyeings.

YUVI-BLF UV stabiliser for polyester

A UV absorber for Polyester which improves the light fastness of disperse dyed and cationic dyeable polyester fabrics and yarns. It works well in alkaline and acid dyeing jet system. It is especially suitable for Automotive fabrics.

YUVI-CELL UPF improver for cellulose

A highly efficient UV protecting agent for cellulosic fabrics. It exhibits excellent UV absorbing properties. It is durable to home launderings. It can be applied to dyed fabrics with minimum shade change. UPF of 40-50 can be achieved.

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