Optical Brighteners are added to many materials to reduce yellowing, improve whiteness, and to enhance the brightness of a product.
1. High whitening strength and strong fluorescence.
2. Wide application scope: polyester, nylon fiber and various plastics.
3. Excellent resistance to high temperature.
4. Excellent compatibility with PVC and other polar polymers, migration endurance.
1)pad-dyeing hot-melt method
dosage:1-3g/L(adjust according to the sample test)
technological process: two-bath two-pad (pick-up rate 70%) → pre-baking(100℃) → baking(180-200℃,20-30s)
2)exhaust dyeing
dosage:0.1-0.3%(o.w.f);
bath ration:1:10-30;
PH:5-10(better for weak acid bath)
technological process: 98-100℃(low-temperature)×30-60min → wash → parch → finalize
120-130℃(high-temperature)×30-60min → wash → parch → finalize
China professional manufacturer of Optical Brightener, welcome to buy Optical Brightener for Polyester. Email: info@shinechems.com
