Chemical Name 2,2'-Benzene-1,4-diylbis(4H-3,1-benzoxazin-4-one)

Synonyms Cyasorb UV-3638

Molecular Formula C22H12N2O4

Molecular Weight 368.34

CAS Registry Number 18600-59-4

Specifications:

Appearance :White to off-white crystalline powder

Melting Point ≥310

Ash  ≤0.1

Volatile % ≤0.5

Applications: UV-3638 is a highly efficient and non-staining UV absorber, which is distinguishied by its superiorly low volatility, and its strong & broad range of UV light absorption together with no color contribution & excellent stabilization for polymers. White UV-3638 is designed to meet the demanding high temperature requirements for processing engineering plastics such as Nylon, PC,PET,PBT and PPO. UV-3638 is also highly effective in other poymers such as polyamides, polyacetals, polyolefins fibers, styrenics, elastomers where long term permanet UV light stability is required.