OPTICAL BRIGHTENER BYB

 Fluorescent Brightener BYB

CHEMICAL STRUCTURE

Sulfonated diaminostilbene derivatives

C.I	28
Appearance	Yellow powder
Ionicity	Anion
Dyeing Shade	Bluish

APPLICATION

It's applied for cellulosic fabric, cotton, yarn, linen and nylon fiber. Its affinity is excellent and primarily for exhaust application, better washing fastness and good stability to peroxide

PROCESS METHOD

1. Normal cotton brightening process:

Dosage: BYB 0.2-0.6% o.w.f; Na2SO4: 5-10g/l; Temperature: 90-100℃; Time:20-30min; Bath ratio: 1:10-20

2. Peroxide bleaching for cotton:

Dosage: BYB 0.1-0.6% o.w.f; NAOH (30%): 1-4 g/l; 

H2O2(35%):4-8 g/l; Na2SiO4: 10-15 g/l; Detergent: 0.5-1.0 g/l; 

Temperature:100℃; Time:30-45 min; Bath ratio: 1:10-20

3. Polyester & cotton blends:

A. Peroxide bleaching:

Dosage: NAOH (30%): 1-4 g/l; H2O2(35%): 4-8 g/l; Na2SiO4: 10-15 g/l; Detergent: 0.5-1.0 g/l; Temperature:100℃; Time: 30-45 min; Bath ratio: 1:10-20

B. Polyester brightening:

Dosage: ER-I/ER-II: 0.2-0.8% o.w.f; Dispersant: 0.5 g/l; 

Temperature:110-130℃; Time: 30 min; Bath ratio: 1:10-20

C. Cotton brightening:

Dosage: BYB: 0.2-0.6% o.w.f; NA2SO4:2-5 g/l; 

Temperature:90-100℃; Time:20-30 min; Bath ratio: 1:10-20

Detailed process is according to customer's request.

STORAGE & PACKING

Sealed in storage, keeping date is 12 months under room temperature.

25kg carton box or as per customer's request.