Optical Brightening Agent OB (C.I.184) Chemical name 2,5-bis-(5-ter-butyl-benzoxazolyl-) thiophene Structural formula Molecular formula: C26H26N2O2S H9C4 Molecular weight: 430 Properties: The product is a bright yellow-green crystal powder. Its melting point is 196-203°C, Decomposition temperature is larger than 220°CIts hard to dissolve in water. It dissolves in paraffin fat, miner oil, wax and common organic solovents. The hue of the fluorescent light is blue light. The wave length of the maximum absorptive light is 375nm (ethyl alcohol). Technical conditions: Appearance: slight greenish yellow powder Melting Point:200-202°C Purity:≥99.9% Fineness: through 100 meshes Use: It is mainly used in thermoplastic ,PVC, PE, PP, PS, ABS, SAN, CA, PA, PMMA, acrylic resin ,polyester fibre, paint, coating, the brightening of prointing ink Package: It is packed in bicorrugated paper box with a liner of plastic bag. The net weight of each box is 10 kg .It can be packed according to the requirement of the user Note: It needs to be declared that the above data is based on our present knowledge and experience; owing to too many affecting factors, these data cannot be free from their check and test when processing and using the product.
mainly used in thermoplastic ,PVC, PE, PP, PS, ABS, SAN, CA, PA, PMMA, acrylic resin ,polyester fibre, paint, coating, the brightening of prointing ink