Irgastab® FS 533 FF

Irgastab® FS 533 FF by BASF is a phenol-free phosphite processing stabilizer designed for use in polyolefin fiber applications. It acts as a light stabilizer when combined with hindered amine light stabilizers such as Chimassorb® 2020 and/or UV absorbers such as Tinuvin® 326. Offers excellent long term thermal stability, low color and minimal gas fade discoloration due to no phenolic interaction. Irgastab® FS 533 FF is suitable for controlled rheology & rheology reactor polypropylene (PP) fibre and fabrics. Designed for bulk continuous filaments and staple fiber applications such as upholstery and floor covering. The recommended dosage level is 0.10–0.15%.