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fluorescent Brightener 4BK for Cotton c.i. 113
fluorescent Brightener 4BK for Cotton c.i. 113

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1.fluorescent optical Brightener for Cotton 4BK (c.i. 113)2.be used as brightener of contton, linen, silk, polyamide fiber ,wool

Chemical name

Stilbene derivative 

Structural formula

 

 

Specification

Appearance:

Grey powder

Fluorescent Color:

Slight bluish

Whitening strength:

100±3( compared with standard sample)

Moisture:

≤6%

Ionic character

anionic

 

 

Treating process:

1.exhausting whitening process:

       4BI: 0.05-0.8% (o.w.f.), bath ratio: 1: 30, dyeing temperature: 40°C -100°C;       Na2SO4:0-10g/l.,start temperature :30°C , heating rate:1-2°C /min, keep the   temperature at 50-100°C for 20-40min, then lower to 50-30°C --> wash-->  dry( 100°C ) --> setting (120°C -150°C )×1-2 min( add proper amount

       leveling agent according to the leveling effect).

2. Padding Process:

       4BI:0.5-5g/l, residue liquor ratio:100%, one dip and nip --> dry( 100°C )

       -->setting (120°C -150°C )×1-2 min

Use:

Mainly be used as brightener of contton, linen, silk, polyamide fiber ,wool and paper.

Package:

It is packed in 20Kgs paper board bucket..It can be packed according to the requirement of the user.

fluorescent optical Brightener for Cotton 4BK (c.i. 113)

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