Quent® 622

Polymer of dimethyl succinate and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol. Acts as 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. Exhibits good compatibility in a wide range of polymers, very low volatility, low migration in use resulting in cleaner surfaces, and very good thermal stability at normal processing temperatures. Demonstrates reduced interaction with co-additives such as pigments. Is a very good stabilizer for systems containing high loadings of carbon black. Can be used in combination with phenolic & phosphite antioxidants, lower molecular weight HALS, and UVA’s to optimize performance in outdoor use. Possesses a low melting range that makes it effective for use in PP, PE, styrenics, unsaturated polyester, acrylic, PVC, plastisols, elastomers.