Optical brightener OB-1


Optical brightener OB-1

Molecular formula: C28H18N2O2
Molecular weight: 414.4547
Molecular Structure:
CAS#: 1533-45-5
EINECS#: 216-245-3
1.Chemical name: 2,2-(1,2-Ethenediyldi-4, 1-phenylene) bisbenzoxazole
     Molecular weight: 414.4
     C.I: 393
    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 %                            99min
    Particle Size                      200 meshes
3.Performance Features��
   1)Of high brightening intensity and strong fluorescence.
   2) Of wide usage in brightening polyester, nylon fiber and all kinds of plastics.
   3) Carries good resistance to high temperature.
4.Scope of Application��
1)Goes for the brightening of such chemical fibers of polyester, 
nylon and polyprolylene. 
2) Goes for the whitening and brightening of polypropylene plastic, hard PVC, 
ABS, EVA, polystyrene, polycarbonate, etc.
3) Applicable to be added in the general polymerizations of polyester and nylon.
5.Application Methods��
Recommended quantity: brightening agents of OB-1 in every 1000kg raw material:
1) Of 75��200g in EVA, polyprolylene, nylon, polycarbonate, and so on.
2)Of 75��300g in terylene fiber.
6.Packing Storage��Packed in 15kg×1.5kg×4 tanks or 5kg×2 paper boxes 
at cool and dry places to be protected from light.



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