BLS® 1326 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. BLS® 1326 is especially suited for polyolefins and cold cured polyesters. It protects polymers from UV radiation helping to preserve the original appearance and physical integrity, especially for polyolefins and polyester resins.

Applications: BLS® 1326 is especially suited for polyolefins and cold cured polyesters. In polyolefins, it has a low volatility at high temperatures and high resistance to thermal degradation for polyolefin compounding and molding applications. For best results, it should be used with a HALS type light stabilizer. In polyester resins, BLS® 1326 does not form colored complexes with metallic curing salts. It is also good with chlorinated flame-retardant polyester resins.

Advantages:

• Strong absorption of ultraviolet radiation in the 300-400 nm region

• Minimal absorption in the visible region (>400 nm) of the spectrum

• Low initial color

• Low volatility during high processing temperatures

• Good extraction resistance