UV Absorber UV 3638

Introduction

UV 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.

Chemical Name:

2,2′-(1,4-Phenylene)bis[4H-3,1-benzoxazin-4-one]

Synonyms:

Cytec Cyasorb 3638

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Products Categories

Light Stabilizers (HALS)

UV Absorbers

Antioxidants

Inhibitor

Other Additives

Solvent Dyes for Plastics

Chemical Intermediate

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Products name	UV Absorber UV 3638
Chemical name	2,2’-(1,4-phenylene)bis-4H-3,1-benzoxazin-4-one
CAS NO.	18600-59-4
Structural formula
Appearance	White or almost white crystalline powder
Melting point	≥315℃
Molecular weight	368.34
Application	PET Film Fiber Containers PETG PC-Capstock PC Molding