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Rubber Optical Brightener KSN 368 from China

The Rubber Optical Brightener KSN is mainly used for outdoor rubber, with good weather resistance and excellent stability.In some countries,the customers also called it Optical Brightener KS.

  • Brand: Raytop
  • Appearance: Yellow Green
  • Purity: 98.5%
  • Color shade: Blue
  • Finess: 300 mesh
  • Package: 10kg/25kg per fiber drum
  • Shelf Life: 2 years
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The  Optical Brightener KSN has a similar chemical structure to  Optical Brightener OB-1, but it has a better whitening effect on polyester fibers and plastic products than  Optical Brightener OB-1, and it has better compatibility with plastics than  Optical Brightening agent OB-1, and it is used in a small amount. Can produce very good whitening effect, which is far from fluorescent brightener OB-1.

Optical Brightener KSN.jpg

Product CateOptical Brightening Agent For Plastic
Product NameOptical Brightening Agent KSN
Chemical Name4.4-bis(5-methyl-2-benzoxoazol)-ethylene
CAS No.5242-49-9
C.I. No.368
Structural Formula
Molecular FormulaC30H22N2O2 
Properties1. being highly whiteness with small usage. 
2. multipurpose used for whitening of polyester fiber and plastic. 
3. having a good compatibility and good fastness to light and sublimation. Can be used for high temperature process.
Treating ProcessOverlay plastic:0.5-2g/100kg 
Polyester fiber:10-20g
Package20kg cardboard drum
Technical IndexAppearance: greenish yellow powder 
Melting process: 300~320°C 
Ash content:≤0.5% 
Volatile content:≤0.5% 
Fineness(300 mesh):100% 

mainly be used in whitening of polyester, polyamide, polyacrylonitrile fiber, the plastic film and all plastic pressing process. Can suitable for synthesizing high polymer including polymeric process.

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