Patent ID: 6420562
Filing Date: 2002-07-16
Classification: C07D

Abstract:
A compound of formula (29), which compound is the condensation product of a dialkyl ester or diisocyanate with a hydroxy substituted N-alkoxy derivative of 4-hydroxy-2,2,6,6- tetramethylpiperidine whereinG1 to G2 are independently alkyl of 1 to 4 carbon atoms, or G1 to G2 together are pentamethylene; z is an integer such that the compound has a molecular weight of 1000 to 4000 amu; G is straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 8 carbon atoms, cycloalkenylene of 5 to 8 carbon atoms, alkenylene of 3 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl of 1 to 4 carbon atoms, with the proviso that in formula (29) successive hindered amine moieties can be oriented in either a head to head or head to tail fashion; R27 is a straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene or cycloalkenylene of 5 to 8 carbon atoms, phenylene, â€”NH-alkylene-NHâ€” of 2 to 18 carbon atoms, 5- imino-1-iminomethyl-1,3,3-trimethylcyclohexane or â€”NH-xylylene-NHâ€”; and R28 is alkyl of 1 to 4 carbon atoms,