Piperidine derivatives and their use as stabilizers

摘要

Piperidine derivatives having the formula WHEREIN R' represents an alkyl group, a substituted alkyl group, an acyl group, an alkoxycarbonyl group, a substituted alkoxycarbonyl group, an amino group, a substituted amino group, or nitroso group; X represents oxygen atom or sulfur atom; Y represents oxygen atom, sulfur atom or a group of the formula = N - R'' in which R'' is hydrogen atom, an alkyl group or a substituted alkyl group; Z represents oxygen atom or a group of the formula >N - R''' in which R''' is hydrogen atom, an alkyl group or a substituted alkyl group; N IS AN INTEGER OF 1 THROUGH 4 INCLUSIVE; AND R represents, when n is 1, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, a cycloalkyl group, an alkoxycarbonyl group, a substituted alkoxycarbonyl group, a substituted phosphino group or a substituted phosphinyl group, when n is 2, an alkylene group, an alkenylene group, an arylene group, a substituted arylene group, an aralkylene group; an alkylenediphenylene group, a bis-(acyloxyalkylene) group, an alkylene-bis-(oxycarbonylalkyl) group, a dialkylene ether group or a diphenylene ether group, when n is 3, an alkanetriyl group, a tris(acyloxyalkylene) group, an alkane-tris(oxycarbonylakyl) group or a group of the group IN WHICH P IS AN INTEGER OF 1 THROUGH 8 INCLUSIVE, AND, WHEN N IS 4, AN ALKANETETRAYL GROUP, A TETRAKIS-(ACYLOXYALKYLENE) GROUP OR AN ALKANE-TETRAKIS-(OXYCARBONYLALKYL) GROUP.