天津UV Absorber UV-320

Chemical name: 2- (2 '- hydroxy-3', 5 '- di-tert-butylphenyl) - benzotriazole

Relative molecular weight: 323.44

English name: ultraviolet absorber UV-320

Appearance: White powder

Molecular formula: C20H25N3O

Melting point: 152~154 ℃

Boiling point: 444 ℃ (760mmHg)

Density: 1.1g/cm3

Emissivity: 1.585

Quality standard: Content ≥ 99.0%. Transmittance: 440nm, ≥ 97%; 500nm, ≥ 98%

Application performance: This product is widely used in plastics and other organic compounds, including unsaturated polyester, PVC, PVC plasticizers, etc. In applications made of polyurethane, polyamide, synthetic fibers, especially those with polyester and epoxy resins, the UV320 effect is more prominent. UV320 has strong ultraviolet absorption ability and low volatility. It can effectively protect polyester and organic pigments from ultraviolet radiation, thereby protecting the original physical appearance of formed objects, films, etc. in the open air. UV320 is slightly lighter in color than ordinary ultraviolet absorbers.