Optical Brightener OB-1
Structural formula
Product Name: Optical brightener OB-1
Chemical Name: 2,2'-(1,2-ethenediyl)bis(4,1-phenylene)bisbenzoxazole
C.I.:393
CAS NO.:1533-45-5
Specifications
Appearance: Bright yellowish green crystal powder
molecular weight: 414
Molecular formula: C28H18N2O2
Melting point: 350-355℃
Maximum absorption wavelength: 374nm
Maximum emission wavelength: 434nm
Properties
Optical brightener OB-1 is crystallized substance, has strong fluorescence. It is odorless, hard to dissolve in water.
It can be used for whitening polyesters, nylon fibre and various plastics such as PET, PP, PC, PS, PE, PVC, etc.
Application
1.Suitable for whitening of fibers such as polyester, nylon and polypropylene.
2.Suitable for whitening and brightening of Polypropylene plastic, ABS, EVA, polystyrene and polycarbonate etc.
3.Suitable for addition in the conventional polymerization of polyester and nylon.
Method
Reference usage:
1 Rigid PVC:
Whitening: 0.01－0.06%(10g－60g/100kg material)
Transparent:0.0001－0.001%(0.1g－1g/100kg material)
2 PS:
Whitening: 0.01－0.05%（10g－50g/100kg material）
Transparent: 0.0001－0.001%(0.1g－1g/100kg material)
3 PVC:
Whitening: 10g－50g/100kg material
Transparent: 0.1g－1g/100kg material
Package
25kg fiber drum，with PE bag inside or as customer’s request.
Storage
Store at cool and dry place.
