Piperidine derivatives and their use as stabilizers
Piperidine derivatives having the formula
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
p is an integer of 1 through 8 inclusive, and, when n is 4, an
alkanetetrayl group, a tetrakis-(acyloxyalkylene) group or an
The piperidine derivatives (I) of this invention are prepared in various
manners and useful as stabilizers for synthetic polymers against thermal-
and photo-deterioration thereof.
Murayama; Keisuke (Tokyo, JA), Morimura; Syoji (Tokyo, JA), Yoshioka; Takao (Tokyo, JA), Toda; Toshimasa (Tokyo, JA), Mori; Eiko (Tokyo, JA), Horiuchi; Hideo (Tokyo, JA), Higashida; Susumu (Tokyo, JA), Matsui; Katsuaki (Tokyo, JA), Kurumada; Tomoyuki (Tokyo, JA), Ohata; Noriyuki (Tokyo, JA), Ohsawa; Hisayou (Tokyo, JA) |
Sankyo Company Limited
March 12, 1973|
Welsh; M. J.