Patent Number: 6,310,220

Title: Stabilizing polycarbonates

Abstract: This invention relates to compositions comprising a polycarbonate, polyester or polyketone which is subject to oxidative, thermal and/or light-induced degradation, or their mixtures and blends, and at least one benzofuran-2-one type compound, to the use thereof for stabilising polycarbonate, polyester or polyketone or their mixtures or blends against oxidative, thermal and/or light-induced degradation, as well as to a process for stabilising these plastic materials.

Inventors: Schmitter; Andre (Hegenheim, FR), Oertli; Alfred Georges (Zurich, CH)

Assignee: Ciba Specialty Chemicals Corporation

International Classification: C08K 5/00 (20060101); C08K 5/1535 (20060101); C07D 307/83 ()

Expiration Date: 10/30/2018