WESTON® 619F phosphite

WESTON® 619F phosphite by SI Group is phosphite antioxidant and offers high color and molecular weight stability to polyolefins, polyesters, elastomers, styrenics and engineering thermoplastics. It offers excellent color stability during processing, fabrication, and end use. This additive exhibit polymer protection from degradation during processing. WESTON® 619F phosphite reduces discoloration of polymers that are stabilized with a sulfur-containing, nickel-organic complex and are processed at high temperatures. It possesses high performance at low loading levels for more cost-effective formulations. This additive imparts synergism when used with light stabilizers such as benzophenones and benzotriazoles. Also contributes to the thermal and UV stability. It is FDA approved. The shelf life of the product is one year.