SperseStab™ 4866

SperseStab™ 4866 by Interspersal is a low-volatility, non-discoloring, highly effective light and thermal stabilizer designed for use in both thermoplastic polyurethanes and rigid and plasticized PVC. It has excellent solubility in both polyether and polyester polyols providing long-term photo-permanence. It incorporates a strong and permanent UV-B absorber for long term UV protection without imparting color and ideally optimized for urethanes. It includes a highly active and permanent antioxidant/radical trap that is ideally suited for PVC and TPU systems for both process stabilization as well as long term thermal stability. It can be used in combination with other additives including HALS, UVAs or antioxidants. It finds application for polymers produced from either aliphatic or aromatic isocyanates. The recommended dosage level is 0.1-1.5% by weight depending on the polymer system. SperseStab™ 4866 has a shelf life of 2 years.