BIOSORB 622 is a polymeric hindered amine light stabilizer (HALS) of N-R type that protects polymers from degradation due to ultraviolet radiation and long term heat aging.

BIOSORB 622 belongs to the newest generation of polymeric Hindered Amine Light Stabilizer, which has excellent hot processing stability. Terrific compatibility with resin, satistying extractibility against water and extreme low volatility and migratory.

This product can be applied to PE.PP. Polystyrene, ABS, polyurethane and polyamide etc, optimum effects are obtained when used with antioxidants and UV-absorbers.

It is one of the light stabilizers that are sanctioned by FDA to be used in food packages. Referance dosage in PE agricultural film: 0.3-0.6%.