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

Cyasorb 3638 offers very strong and broad UV absorption with no color contribution. Possesses very good stabilization for polyesters(PET) and polycarbonates(PC).3638 is based on a benzoxaxinone structure which delivers a short-term heat stability up to 350 °C and a long term heat stability up to 160 °C.

UV 3638 is ideal for film/sheet/plate applications such as solar cell, window film, etc.