Optical Brightener KCB, also know as oba 367, Fluorescent Brightener 367 or Fluorescent Brightener kcb, belongs to the benzoxazole type Optical Brightener agent. It has extremely strong whitening and brightening effect. Optical Brightener KCB is mainly used for the whitening of EVA, PE foaming, plastic materials and synthetic fibers. It has a significant effect on increasing the brightness of colored plastic products.
Technical Specs of Optical Brightener KCB
Chemical Name: Fluorescent Brightener kcb
CAS No: 5089-22-5
Molecular Formula: C24H14N2O2
Molecular Weight: 362.380
Appearance: bright yellow green powder
Melting Point: 210-212°C
Purity: ≥99.0%
Volatiles: ≤0.2%
Ash: ≤0.1%
Properties of Optical Brightener KCB
Optical Brightener KCB is a bright yellow green powder and produces blue bright white light, with 370nm as its maximum absorption wavelength spectrum. It is non-toxic and odorless, insoluble in water, but soluble in common organic solvents. OBA 367 has excellent light and heat resistance. It does no reaction with foaming agent, cross-linking agent, no exudation and extraction. Optical Brightener KCB has high light transmittance, suitable for transparent products. With foaming function, its other properties similar to optical brightener OB.
Applications of Optical Brightener KCB
Optical brightener KCB is widely used in EVA, it is the first type of fluorescent brightener used in sports shoes. At the same time, it is also widely used in plastic films such as PE, PP, PVC, PS, ABS, extrusion molding materials, pressing film forming materials, injection molding materials, and polyester fibers. OBA 367 has excellent whitening effect on polyolefin, PVC, foamed PVC, TPR, EVA and PU foam, synthetic rubber, etc. Optical Brightener KCB can also be used for whitening paint and natural lacquer. It has special effect for foamed plastics, especially EVA, PE foaming. It is equivalent to Hostalux KCB (Hoechest).
Packaging and Storage of Optical Brightener KCB
The standard packaging for Optical Brightener KCB is 25 kgs per fiber drum lined with plastic film. Optical Brightener KCB is stored in cool and dry place without direct sunlight. Shelf life for Optical Brightener KCB is at least 2 years.
