Optical Brightener 4BK--Hangzhou Ruijiang Industry Co. Ltd.
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Optical Brightener 4BK

Product Description

It is a yellow-green powder and anionic. It has very good fastness for washing. It has good stability for alkali-oxygen in one bath process. 


Technical Index

Appearance

Yellow-green powder

Ionicity

Anionic

Shade

Purple/Red/Blue

 

Application

Suitable for whitening of cotton, polyester/cotton blends peroxide bleaching and whitening in one bath, also suitable for pad process.

 

Dosage

1.  Exhausting processing 

AmountOptical Brightener 4BK 0.2-0.6% o.w.f

sodium Sulfate 5-10g/L
temperature×time
90-100×20-30 minutes

Bath ratio 1:10-20


2. Alkali-oxygen in one bath process
     Amount
Optical Brightener 4BK 0.1-0.6%

 Sodium Hydroxide 30%:1-4g/L
 Peroxide (35%)
4-8g/L

 Sodium silicate: 2-5g/L

 Detergent0.5-1g/L
 temperature×time
100×30-45 minutes

 Bath ratio 110-20

 

3. Pad Dyeing
    Amount
Optical Brightener 4BK 1-4g/L
    Process
Dip and padmangle expression70-80%

    Drying100℃)

    Shapingbelow160×20-30 seconds

 

Packing

It is available in 25kg cardboard boxes or 50kg drum or other packing on request.

 

Storage

Transport as non-hazardous chemicals. Store in original container only.

Keep container tightly closed and store in a cool, well ventilated place. 

 

Shelf life

Original characteristics remain intact for 12 months, if kept in recommended storage.  

 

Revision Date: 01/05/2012                 Version 2.0

 


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