.

Optical Brightener 4BK Optical Brightening Agent 4BK Whitening agent for cotton fabric

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.

Shijiazhuang Taicang New Materials Co., Ltd. is a technology innovation and environmental protection enterprise integration of research, production and sales series of and .

,optical brighteners in textiles,,cotton fiber dyeing,,Fluorescent Brightener Agent 199,.

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.

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

  1. (o.w.f)

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:

  1. 、Fe、Mn、Zn,will affect the whitening effect of OBA. For this aspect, Can use metal ion chelating agent to remove in advance.
  2. ,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 , 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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