optical brightener 4BK
optical brightener 4BK
Optical brightener 4BK suitable for: Cotton,Chinlon,viscose,T/C,T/R,Viscose,Wool,Silk. Optical brightener 4BK can be dissolved in warm water, And good compatibility with most chemical agents used in dyeing and finishing，optical brightener 4BK used in One-bath dyeing.
optical brightener 4BK
other name:optical brightener 113,fluorescent brightener4BK,fluorescent whitener4BK
This item optical brightener 4BK suitable for: Cotton、Chinlon、viscose、T/C、T/R、Viscose、Wool、Silk.optical brightener 4BK can be dissolved in warm water, And good compatibility with most chemical agents used in dyeing and finishing，optical brightener 4BK used in One-bath dyeing.
fluorescent brightener powder
|
Physical characteristics |
Fastness properties |
||
|
chemical onstruction |
Stilbene derivative |
H2O2 |
Stable |
|
appearance |
Light gray powder |
reductant |
Stable |
|
ionicity |
Negative |
chlorine |
Unstable |
|
affinity |
High |
chlorate |
Unstable |
|
fluorescent colors |
Blue-violet light |
PH scope |
6-11 |
|
solubility |
100 g/l @60℃ |
||
|
storage |
24 Month |
||
Fastness properties
|
Cotton、Viscose |
Chinlon |
Wool、Silk |
||
|
fastness to light |
3-4 |
3 |
2 |
|
|
washing fastness |
40℃ |
5 |
5 |
5 |
|
60℃ |
5 |
5 |
* |
|
|
95℃ |
4-5 |
* |
* |
|
|
chlorine fastness |
4 |
* |
* |
|
|
perspiration fastness |
Acidic |
5 |
4-5 |
4 |
|
Alkalinity |
5 |
4-5 |
4 |
|
|
heat fastness |
180℃/30s210℃/30s |
5 |
4 |
* |
|
dry cleaning fastness |
5 |
5 |
5 |
The above data in accordance with the ISO standard for testing
|
Application method |
|||
|
Cotton、Cellulose |
|||
|
dipping process |
Padding process |
||
|
4BK |
|
4BK |
|
|
H2O2（35%） |
8-14 ml/l |
H2O2（35%） |
8-20 ml/l |
|
sodium hydroxid（100%） |
1-3 g/l |
sodium hydroxid（100%） |
3 g/l |
|
scouring agent TC-QY90 |
2-4 g/l |
scouring agent TC-QY90 |
2-4 g/l |
|
bath ratio |
1：5-10 |
Fabric pad working liquid→steaming（100℃/50 minute）→wash |
|
|
No bleach |
40-80℃/15-30 minute |
||
|
Add bleach |
95-80℃/30-60 minute |
||
Notes:
- 、Fe、Mn、Zn，will affect the whitening effect of OBA. For this aspect, Can use metal ion chelating agent to remove in advance.
- ，Only use appropriate amount is enough to show whitening effect. If use too much will appear extinction phenomenon.
Packing method
In 25kg cardboard drum.
As A fluorescent whitener powder manufacturer, We Can Wholesale You Fluorescent Brightener Agent 199, Er Fluorescent Brightener Agent, Oba Mst. Fluorescent Powder Reactive Can Be Used For Textile Dyes. If You Need, Please Contact Us.
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