factory customized Chinese Manufacturer Optical Brightener with High Whitening Effect - Optical Brightener KSB – Subang

Structural formula

Chemical name: 1,4-bis(5-methyl-2-benzoxazolyl)naphthalene

C.I.:390

Molecular formula: C26H18N2O2

Molecular weight: 390

Technical Data

Appearance: Light yellow crystalline powder

Melting point: 237-239℃

Purity: ≥99.0%

Fineness: more than 200 items

Performance and Characteristics

1. This product is light yellow powder

2. It is insoluble in water, does not react with foaming agent, cross-linking agent, etc., has no exudation and extraction, and the maximum absorption wavelength of the spectrum is 370nm. 

3. Low dosage, good fluorescence intensity and high whiteness.

4. It has good compatibility with plastics, good light resistance and heat resistance.

Application

Optical brightener KSB is mainly used for the whitening of synthetic fibers and plastic products. It also has a significant brightening effect on colored plastic products. It is widely used in plastic films, laminated molding materials, injection molding materials, etc., for polyolefin, PVC, Foamed PVC, TPR, EVA, PU foam, synthetic rubber, etc. have excellent whitening effects. It can also be used for whitening coatings, natural paints, etc., and has special effects on foaming plastics, especially EVA and PE foaming. 

Reference Dosage

0.005%~0.05% (weight ratio to plastic raw materials)

Packing

25kg cardboard drum lined with plastic bag or packed according to customer requirements