OB-1 is used widely in the plastic market. Because of its excellent brightening ability,good thermal stability,and compatibility with many polymers.

 

Key words: optical brightening agent OB-1, optical brightener OB-1, fluorescent brightener OB-1, optical whitening agent OB-1, brightener OB-1

 

 

Typical Properties:

Chemical name: 2,2-(1,2-Ethenediyldi-4, 1-phenylene) bisbenzoxazole
Molecular weight: 414.4
CAS No.: 1533-45-5
C.I.: 393

 

Specifications:

Ash %                       0.3max
Empirical Formula             C28H18N2O2
Melting Point(DTA),C          353-359
Appearance                  Yellowish Green Powder
Odor                         Free of odor
Volatile Content %             0.3max
Assay %                      99.5min
Particle Size                  200 meshes

Application:

For whitening of polyester and nylon; also used in ABS, PS, HIPS, PA, PC, PP, EVA, PVC, etc.

Rate of use: (per 1000kg of substrate)
Polyester: 75-300g
EVA, PP, nylon: 75-200g

 

Package:

25kg / fiber drum with PE liner


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