UV stabilised polyolefin, polystyrene, polyurethane, etc. - contg. piperidinyl carbonyl-oxy derivs. as UV stabiliser

摘要

Piperidine cpds. are of formula (I). In (I) R1 is H or 1-4C alkyl; X is H, 1-12C oxyl or alkyl, 3-6C alkenyl, 3-4C alkynyl, 2-21C alkoxyalkyl, 7-8C aralkyl, 2,3-epoxypropyl 1-4C aliphatic acyl, -CH2COOR4, -CH2-CH(R5)-OR6, -COOR7 or -CONHR7; R4 is 1-8C alkyl, 3-6C alkenyl, phenyl, 7-8C (I) aralkyl or cyclohexyl; R5 is H or phenyl; R6 is H, 1-18C aliphatic, aromatic, araliphatic or alicyclic acyl, in which the aromatic part is opt. substd. by Cl, 1-4C alkyl, 1-8C alkoxy and/or OH;R7 is 1-12C alkyl, cyclohexyl, phenyl or benzyl. If n=1 and m=1 or 2, R2 is 4-18C alkyl, 2-8C alkenyl, 3-6C alkynyl, 7-11C caralkyl, 5-12C ayaloalkyl, 6-14C aryl or of formula (II); when n=2 and m=1, R2 is 1-12C alkylene, 4-8c alkenylene, 4-8c alkynylene, phenylene-bis-methylene or 5-12C cycloalkylene; if n=3 and m=1,R2 is 3-8C triol; if n=4 and m=1, R2 is pentaerythrityl; if n=1 or 2 and m=1, R3 is H, 1-18C alkyl, 7-11C aralkyl, 1-18C aliphatic, aromatic, araliphatic or alicyclic acyl in which the aromatic part may be substd. by Cl, 1-4C alkyl, 1-8C alkoxy and/or OH, or R8 NHCO-; R8 is 1-18C alkyl, 7-9C aralkyl, 5-12C cycloalkyl or 5-14C aryl; if n=1 and m=2, R3 is 1-20C -CO-alkylene-CO-, 2-20C -CO-alkenylene-CO 2-8C -CO-alkynylene-CO-, -CO-CH2OC6H5-CH2CO-6-10C -CO-arylene-CO-, -CO-cycloalkylene-CO-, or -CO-NH-R9-NH-CO-; R9 is 2-12C alkylene, 6-10C arylene, 5-8C cycloalkylene, divalent N,N'-isophorone; arylene (6-10C) (6-10C) -Z- arylene(6-10C) or cycloalkylene (5-78C) -Z- (cycloalkylene(5-8C) ; Z is -O-, -CH2,- or -SO2-; Y is O or -NR10; and R10 is H, 1-18C alkyl, 2-8C alkenyl, 3-6C alkynyl, 7-11C aralkyl, 5-12C cycloalkyl or (II)).