Product Description

Optical Brightening Agent OB-1 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 % 99min 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