Patent ID: 6362278
Filing Date: 2002-03-26
Classification: C08F,C08K,Y10T

Abstract:
A process for stabilizing and at the same time phase compatibilizing plastics or plastic compositions comprising at least two different polymers, by incorporating polymeric compounds obtained by reacting a sterically hindered amine compound which contains at least one reactive group, with a compatibilizer compound, wherein the compatibilizer compound is a grafted styrene co- or terpolymer selected from the group consisting of styrene/acrylonitrile grafted with maleic anhydride (SAN-g-MAH), styrene/maleic anhydride/methyl methacrylate, styrene/butadiene/styrene block copolymer grafted with maleic anhydride (SBS-g-MAH), styrene/ethylene/propylene/styrene block copolymer grafted with maleic anhydride (SEPS-g-MAH),and styrene/ethylene/butadiene/styrene block copolymer grafted with maleic anhydride (SEPS-g-MAH), and the sterically hindered amines are compounds of formula II, IIa or IIb whereinR8 is hydrogen, C1-C25alkyl, C2-C20alkenyl, C2-C20alkynyl, C1-C20alkoxy, phenyl-C1-C3alkyl, C5-C12cycloalkyl, C5-C8cycloalkoxy, phenyl, naphthyl, hydroxyethyl, â€”COâ€”C1-C25alkyl, â€”CO-phenyl, â€”CO-naphthyl, â€”CO-phenyl-C1-C3alkyl, â€”Oâ€”COâ€”C1-l C20alkyl, C1-C6â€”Sâ€”C1-C6alkyl, C1-C6â€”Oâ€”C1-C6alkyl, C1-C6â€”(CO)â€”C1-C6alkyl, w is a number from 1 to 10; Y is a single bond, C1-C25alkylene, phenylene, biphenylene, naphthylene, â€”Oâ€”C1-C25alkylene, â€”NR9â€”, â€”Oâ€” or Z is hydrogen, â€”COOR9, â€”OR9, hydroxylethyl, R9 is hydrogen or C1-C12alkyl; and R10 has the same definition as R8.