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اردو 
-- Efficiently prevents storage yellowing due to the contact between white or pale nylon fibre and BHT (butylated hydroxytoluene) while BHT occurs in most plastic bags.
Main composition
-- Special surfactant derivatives.
General properties
-- Appearance:Yellow transparent viscous liquid
-- Ionicity:Anionic
-- pH:6-8
-- Stability:Stable to acid,weak alkali and electrolytes
Product Features
-- Excellent inhibition ability to phenol yellowing.
-- High affinity to polyamide fiber.
-- Washable,does not affect the light fastness.
Application
-- Padding
HT-8191C: 10-35 g/L
Citric acid: 1.0-2.0 g/L
-- Dipping
For white shade, HT-8191C can be used in same bath or add at 60-70℃,while for other shades, HT-8191C should be added after drain.
HT-8191C: 2-3%
Citric acid: 0.5- 1.0 g/L
Process at 70℃×20-30 min, then dry.
Packing and Storage
-- Packing: 125kg/polyethylene drum
-- Storage: 6 months in sealed container at room temperature
