Shanghai Deborn Co., Ltd.  

Product Name: Optical Brightener Dbl for Nylon and Cotton Model NO.: DBL Application: Post-Processing Auxiliary Appearance: Liquid Kind: Optical Brightener Color: Yellow Ionicity: Anion Dyeing Shade: Neutral Trademark: DEBORN Transport Package: 25kg/Barrel Specification: 98% Origin: China HS Code: 320420 Product Description CHEMICAL STUCRTUREHydrazine sulfonate derivativesPROPERTIESAppearanceYellow liquid IonicityAnionDyeing shade NeutralAPPLICATIONIt's suitable for Optical Brightening Agent for nylon and cotton. Its high light fastness is around 5 grades. It's for exhaustion and padding process.PROCESS METHOD1. Exhaustion process for nylon:A. Na2SO4 bath:Dosage: DBL 0.5-1.5% o.w.f; Detergent: 0.5-1.0 g/l;Na2SO4:2-3g/l; Acetic acid adjusted PH=4-6; Temperature: 80-130ºC;Time:20-30min;B. Sodium Chorite bath:Dosage: DBL 0.5-1.5% o.w.f; Detergent: 0.5-1.0 g/l;NaNO3:2-3 g/l; Sodium chlorite:3-8g/l;Complexing agent: 0.5-1.0g/l;Temperature: 90ºC; Time:30-40min;2. Padding process for nylon:Dosage: DBL 8-30 g/l;Levelling agent: 1-2 g/l; Fixing agent:5-10 g/l;Temperature: 20-60ºC; Dip&squeeze: pick up 80-100%,baking under 105ºC.3. Dyething method for cotton:Dosage: H2O2 50% or 35% g/l, stabilizer 1g/l, NAOH 98% 0.6g/l,Bath rate: 20.Detailed process is according to customer's request.STORAGE & PACKINGSealed in storage, keeping date is 12 months under room temperature.25kg plastic drums or as per customer's request.