光稳定剂Lowilite 29 Benzotriazole Light Stabilizer Lowilite 29 is an ultraviolet light absorber belonging to the benzotriazole class of UVAs. 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol CAS Reg. Number [3147-75-9] Typical Properties Appearance Pale Yellow Powder Molecular weight 323 Specific Gravity @ 25°C 1.18 Melting range, °C 103 – 105 Thermogravimetric Analysis ( 10 mg @ 10°C/minute under N2) Weight Loss, % 1 5 Temperature, °C 180 220 Solubility @ 20°C (g/100 ml solvent) Water < 0.01 Benzene 32 Ethyl Acetate 15 Cyclohexane 15 Methyl Alcohol 0.6 n-Hexane 6 N N N HO Chloroform 37 Methylene Chloride 38 Lowilite 29 is a strong ultraviolet light absorber in the 300 - 400 nm region. Lowilite 29 provides effective light stabilization and prevents the yellowing and degradation of polymers such as polyolefins, polyvinylchloride, unsaturated polyester, acrylics and ABS. Lowilite 29 can be used alone or in combination with other stabilizers, such as antioxidants, thiosynergists, lactones and other light stabilizers.
