optical brightener KSB 369

optical brightener KSB 369

Chemical name: 1,4- two (5- methyl -2- benzoxazyl) naphthalene
Molecular formula: C26H18N2O2
Molecular weight: 390
Properties: This product is light yellow powder, non-toxic and tasteless, insoluble in water, excellent light and heat resistance, and does not react with foaming agent, cross-linking agent, no leakage and extraction, maximum absorption wavelength of 370 nm.
Technical conditions:
Appearance: yellowish green crystalline powder
Melting point: 237-239 C
Purity: more than 99%
Fineness: greater than 200 mesh.
Color: bright blue and white.
Volatile: less than 0.5%
Ash: less than 0.3%
Scope of application:
Fluorescent whitening agent KSB is mainly used for whitening synthetic fibers and plastic products. It also has obvious brightening effect on colored plastic products. It is widely used in plastic film, pressing film forming materials, injection molding materials, etc. it has excellent whitening effect on polyolefin, PVC, foamed PVC, TPR, EVA and PU foam, synthetic rubber and so on. The whitening of paint and natural lacquer has special effect on foaming plastics, especially EVA and PE foaming.
Recommended dosage: 0.005%~0.05% (weight ratio to plastic raw material)
Packaging and storage: 25 kilograms cardboard drum packaging; in a cool, dry place to avoid light

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