Product Description

Optical Brightener OB CAS No. 7128-64-5,other name Fluorescent brightener OB, Fluorescent whitening agent 184,Cas No. 7128-64-5, widely used in PE whitening and PP whitening ,paint and ink whitening ,injection molding, blown film whitening, color masterbatch whitening and brightening, PVC whitening, transparent plastic products and polyester fiber whitening.

Product Detail

Optical Brightener OB

Optical Brightener OB CAS No. 7128-64-5, Fluorescent whitening agent 184, CI 184, 2,5-Di (5-tert-butylbenzoxol-2-yl) thiophene,light yellow powder, white pigment powder optical brightening OB CAS 7128-64-5 chemical for powder coating powder odorless, Cas No. 7128-64-5, molecular formula C26H26N2O2S, mainly used in PVC, PS, PE, PP, ABS whitening and other plastics and acetate fiber, paint, ink and other whitening. Because of its good transmittance, it is suitable for whitening transparent plastic products,such as Plastic film whitening, PE PVC PS ABS PP Film whitening.


1.Performance Metrics

Name

Optical Brightener OB

Molecular formula:

C26H26SO2N2

Molecular weight

430.5618

C.I.

184

CAS NO.

7128-64-5

EINECS

230-426-4

Appearance

light yellow powder

Melting Point

196-203 °C

Decomposition Temperature

above 220 °C

Color Light

bright blue light

UV absorption

1100-1200

 














2.Application

(1) injection molding, blown film whitening, color masterbatch additive, PVC whitening

(2)PE whitener、PP whitener、PS whitener、ABS whitener

(3) transparent plastic products and hot-melt plastic whitening

(4)Coating whitener,  Paint whitener, ink whitener, wallpaper whitener

(5)Polyvinyl chloride, polystyrene, polypropylene, polyethylene, acrylonitrile, butadiene, styrene copolymer, styrene, acrylonitrile copolymer, butadiene cellulose acetate, polyamide (PA) , Poly(methyl methacrylate) , acrylic resin, polyester fiber (polyester) whitening agent


          


3. Usage

(1) polyvinyl chloride: 0.01 ~ 0.05% increase brightness: 0.0001 ~ 0.001%

(2) polystyrene: 0.0001 ~ 0.05% ABS: 0.01 ~ 0.05%

(3) colorless polyolefin matrix: 0.0005 ~ 0.001% ; white matrix: 0.005 ~ 0.05% ; White: 1-5 parts per million (10g)

Transparent material: 0.01 parts per million (0.1)(0.1 g-1 g)(can improve the brightness of PVC) ;

(4) PS whitening: 0.1 parts per million white (1g) ; 0.01 parts per million transparent (0.1 g-1g) ;

(5) ABS whitening: 1 part per million (10g-50g)(can effectively eliminate the inherent yellow in ABS)

(6) PE, PP whitening: colorless, 0.05 part per million (0.5 G-1g) white 0.5 part per million (5g-50g) ;

4.Packaging

25kg cardboard drum, lined with plastic bags or according to customer requirements packaging.



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