【Product】
Optical Brightener 4BK（OBA 113)
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Optical Brightener 4BK（OBA 113)
Optical Brightener 4BK（OBA 113)
Product Name Optical Brightening Agent 4BK CAS No. 12768-91-1 C.I. No. 113 Main Chemical Composition Stilbene bistriazine derivative Properties
1) With strong fluorescence, excellent whitening effect and slight bluish shade
2) With high light resistance and chemical stability.
3) Good acid resistance, stable in perborate and hydrogen peroxide.
Treating Process
Exhaust process: 0.1-0.8% (o.w.f.), bath ratio: 1:10-30
Temperature 90--100¡ãC¡Á30-40min-wash-dry.
The process can be adjusted according to the actual situation.
One bath process of Scouring hydrogen peroxide bleaching and whitening:
Dosage:0.2-0.8%( o.w.f.)
Stabilizer:1-5g/L
Scouring agent:0.5-1g/L
hydrogen peroxide:5-15/L
NaOH:2-4g/L
bath ratio:1:10-30
Temperature:90--100¡ãC×30-40min wash dry. The processing can be adjusted according to the actual situation.
Package 25kg per fiber drum Technical Index
Appearance:Slightyellow uniform powder
Shade: Slight bluish
Water:<5%
Fineness(120 mesh residue):≤5%
Uses
Mainly be used in whitening of cotton fabric and polyester /cotton blends.
T/C whitening in one bath.
