1,4-bis(benzoxazolyl-2-yl)naphthalene（KCB）
CASNo. 5089-22-5
StructuralFormula:
Properties:
It is bright yellow green powder, non-toxic and odorless,insoluble in water, with light and heat resistance. It does not react withfoaming agents, crosslinking agents, etc., and has no exudation orextractability. The spectral absorption wavelength is 370nm.
It is mainly used for whitening synthetic fiber andplastic products, and has obvious brightening effect on colored plasticproducts. It is widely used in plastic films, compression molding materials,injection molding materials, etc. It has whitening effect on polyolefin, PVC,foamed PVC, TPR, EVA, PU foam, synthetic rubber, etc. It can also be used forwhitening paint, natural paint, etc. It has special effect on foamed plastics,especially EVA, PE foaming. Due to its superior fluorescent whitening effect, non-toxicity,good thermal stability, and low dosage, it has been widely used as one of thefluorescent whitening agents in China.
Specification(HG/T 5097-2016):
Items | Index |
Appearance | Yellow green powder |
Purity (%) | ≥98.0 |
UV absorption | ≥900 |
Mass fraction of volatile matter/% | ≤0.50 |
Remarks: This quality indicator is only for reference, and the specific indicators are subject to the contract.
Usage:
Mix it with various plastic ions,equivalent to 0.005% -0.05% of the weight of plastic raw materials (recommendeddosage), and proceed with molding processing.
Packageand Storage:
Paper box packaging, lined withplastic bags, customers' requirement. Storage in shady room and dry place.
