Phenolic Yellowing Resistant Agent for Nylon 2191
Anti yellowing agent
【Main composition】?Special surfactant derivatives.
【General properties】
Appearance: yellow transparent viscous liquid
Ionicity: anionic
pH: 6-8
Stability: stable to acid, electrolytes and mild alkali
Solubility: easily soluble in water
【Product features】
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.
【Application】
Suitable for padding and exhaust dyeing. It can be used with bleaching agent

in same bath or used at 70℃ after dyeing. It is suggested to add HT-2191 after

drain of dyeing bath.
1. Padding:
HT-2191: 20-40 g/L
Citric acid: 2-5 g/L
Pad at room temperature with water retention at 80-85%, and dry at 120-140℃

.
2. Dipping:
For white shade, HT-2191 can be used in same bath or add at 60-70℃, while

for other shades, HT-2191 should be added after drain.
HT-2191: 2-4%
Citric acid: 0.5-1.0 g/L
Process at 70℃ × 20 -30 min, then dry.
【Packaging and storage】
125 kg/ polyethylene drum, 6 months in sealed container at room temperature.
【Notes】
The data contained in this literature are based on our current knowledge and

experience. It is imperative that it be tested to determine, to your satisfaction,

whether it is suitable for your intended use and application. We shall not take

any responsibility in any situation for improper use.
【Sample supply】
If you need samples for testing, please feel free to contact us, we will

recommend suitable products according to your requirement.