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Optical Brightener Agant 4BK For Printing and Dyeing

Short Description:

Physical characteristics                                         Fastness properties                                       chemical onstruction : Stilbene derivative  H2O2 : Stable appearance : Light yellow 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 F...


  • Optical Brightener Agant 4BK For Printing and Dyeing: This item suitable for: Cotton、Chinlon、viscose、T/C、T/R、Viscose、Wool、Silk. It can be dissolved in warm water, And good compatibility with most chemical agents used in dyeing and finishing,used in One-bath dyeing.
  • Product Detail

    Product Tags

    Physical characteristics                                        

    Fastness properties                                      

    chemical onstruction

    : Stilbene derivative

     H2O2

    : Stable

    appearance

    : Light yellow 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

    OPtical brightener 4BK

    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℃/30s

    210℃/30s

    5

    4

    *

     

    dry cleaning fastness

     

    5

    5

    5

     

    Application method     


    Cotton、Cellulose    

     

    dipping process   Padding process

     

    4BK 0.1-0.3 % (o.w.f) 4BK

    0.5-2  g/l

    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 liquidsteaming(100℃/50 minute)→wash
    No bleach 40-80℃/15-30 minute

     

    Add bleach 95-80℃/30-60 minute  

    1. Do not use cationic additives。Because may cause conflict with anionic fluorescent whitening agent.

    2. Water containing metal ions,such as: Cu、Fe、Mn、Zn,will affect the whitening effect of OBA. For this

    aspect,Can use metal ion chelating agent to remove in advance.

    3. Do not exposed to the sun after dissolution.

    4. 4BK has good fastness to H2O2,so with H2O2 bleaching and fluorescent whitening treatment can be in the same dye bath。

    5. 4BK is a kind of fluorescent dyes with excellent whitening effect,Only use appropriate amount is enough to show whitening effect. If use too much will appear extinction phenomenon.

    6. Its dyeing speed is fast, dye uniformity and compatibility is good, so room temperature bath without additives can dyeing

    7. If used in the dye bath containing sodium chlorite,will effect the whitening effect, so need to remove chlorine fully before use 4BK.

    Our factory and production workshops of Jinan Credit Chemicals

    Optical brightener CBS-X. Our wharehouse and big stock of optical brightener powders

    optical brightener 351 Exhibition attendance and customer visit photos   

    optical brightener ob-1  . . Five star of our service and products quality from our customers

    optical brightener cbs-x. Our shipping process

    optical brightener ob-1  ,


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