OPTICAL BRIGHTENER ER 

(Liquid grade)

Main Chemical Composition :
 
  • stilbene derivative
C.I. Number : 
 
  • 199
Specification:
 
  • Appearance: slight yellow liquid
  • Ionic character:  nonionic
  • PH value: 5-7
  • Active content: >20%
Process:
 
  • Pad-thermos fixing process 

    OBA-ER 2-3g/l(should be adjusted according to the sample testing), procedure: pad(two dips and two squeezes, residual liquor content 70%)

    ---dry(100) --- cure(180-200,30-20s)

    Attention:

    (1.) the goods must be rinsed throughly after pretreatment to ensure the PH below 8.

    (2.) the PH of the pad liquor should be adjusted to 4-5 with acetic acid.

  • HT exhausting process:

  • OBA-ER 0.2-0.3%(o.w.f.)                 liquor ratio 1:10-30

    Treating temperature 120-130 ℃      treating time 30-60min

  • PH:     5-10     (5-7 is specially recommended)

Application:
 
  • Mainly be used in whitening of polyester fiber and as the raw material of paste form brightening agent in textile dyeing.
Property:
 
  • mainly used in whitening of polyester fabric and its blend with Strong fluorescence, high whitening performance, good fastness To light, wash and excellent fastness to sublimation.

     
Packing:
 
  • It packed with 25kg or 200kg blue plastic pail

 


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