ULTRAVIOLET ABSORBER UV-234

Product Name：2 - (2 '- hydroxy-3', 5 '- bis - (a, a-dimethylbenzyl) phenyl) benzotriazole
Purity：99%
CAS No：70321-86-7
Molecular Formula：C30H29N3O
Technical indicators：
1、APPEARANCE：Light yellow powder
2、MELTING POINT：137~141℃
3、VOLATILE：0.2%max
4、TRANSMITTANCE：  460nm   97%min
550nm   98%min
5、Solubility：Acetone 2, chloroform 35, cyclohexane 5, ethanol 0.3, methanol 0.1% max, ethyl acetate 4, n-hexane 0.6, dichloromethane 34, toluene 20。
Package：20kg cardboard barrels or cartons can also be packed according to customer requirements。
Storage: This product should be sealed and stored in a closed, dry and dark place to avoid sunlight。
Toxicity and safety: This product has no irritation to human skin and is safe to handle and operate。
Application: UV-234 is compatible with most polymers. It is especially suitable for polycarbonate. In addition, it also protects polymers such as PBT, pet, polyamide (PA), polyacetal and acrylic acid。
Specific application:
1、 Coating: 1.0 ~ 3.0wt% solid
2、Polycarbonate: 0.2 ~ 0.4wt% polymer weight
3、Acrylic acid: 0.1 ~ 0.3 wt% polymer weight
4、Polyester: 0.1 ~ 0.3 wt% polymer weight