Optical Brightener OB

Optical Brightener OB

Optical Brightener OB is a high purity fluorescent brightener with a blue undertone and is used to reduce the yellowing effect and achieve a brighter, clearer appearance, especially in plastics such as polyolefins, PVC, PS and ABS. This highly thermally stable additive improves product quality in terms of both aesthetics and performance by providing maximum whiteness with low dosages. Thanks to its UV absorption properties, it also strengthens resistance against external factors.

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Spefication (5 kg x 1) (25 kg x 1) cardboard, paper bucket.
Expiration date Long-term effective
Composition Benzoxazole type
Parameters 1. Appearance: light green powder 2. Color light: blue and white (similar with standard) 3. Purity: ≥ 98% 4. Melting point: 198.203℃ 5. Fineness: Greater than 100 mesh
Definition OB is widely used in PVC, PE, PP, PS, ABS, PMMA, POM and other thermoplastic plastics, as well as thermosetting plastics, polyester fiber, paint, ink, dye and other whiteners.
Protection 1: This product information is for reference only, please contact our company if you have any technical or usage problems. 2: Technical advice provided by the company both verbally and in writing
Uses PVC whitening: 0.01, 0.05% gloss increase: 0.0001, 0.001% polystyrene 0.0001, 0.05% ABS: 0.01 and 0.05% polyalkene colorless matrix: 0.005, 0.05% white matrix: 0.005, 0.05
Characteristic Light green powder, tasteless, soluble in alkane, fat, mineral oil, paraffin and most organic solvents, spectral maximum absorption value 375 nm in ethanol), maximum emission wavelength 435 nm (in ethanol)

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