Derivatives of morpholine containing substituted piperidine groups

摘要

Derivatives of morpholine containing substituted piperidine groups having the formula: (I) wherein R1, R2, R3 and R4, the same or different, are each a lower alkyl group, or R1 and R2 and/or R3 and R4, together with a carbon atom to which they are bound, represent a cycloalkyl group or a group of the formula: in which R6, R7, R8 and R9, the same or different, represent a hydrogen atom or a lower alkyl group, and R5 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkoxyalkyl group, an aralkyl group, a substituted aralkyl group carrying one or more substituents on the aryl radical, a 2,3-epoxypropyl group, a group of formula -CH2-COOR10 in which R10 is an alkyl group, an alkenyl group, a phenyl group, an aralkyl group or a cyclohexyl group; a group of formula: in which R11 is a hydrogen atom, a methyl group, an ethyl group or a phenyl group, and R12 is a hydrogen atom, an alkyl-substituted piperidyl group, a triazinyl group or an acyl group; an aliphatic acyl group or a group of formula -COOR13 in which R13 is an alkyl group, a benzyl group or a phenyl group; A represents an organic group having n valence which does not adversely affect the polymer-stabilization activity; and n is an integer ranging from 1 to 3 depending on the valence of A. The use of said derivatives as stabilizers for polymeric substances, and polymeric compositions stabilized with said piperidine-substituted morpholine derivatives.