申请人:Sankyo Company, Limited
公开号:US05446144A1
公开(公告)日:1995-08-29
A compound of formula (I): ##STR1## wherein: R.sup.1 is hydrogen, alkyl, alkoxyalkyl, carboxylic acyl or phenylalkyl, or an optionally substituted tetramethylpiperidyl group: R.sup.2 is hydrogen, alkyl, carboxylic acyl or phenylalkyl group; R.sup.3 is alkylene optionally interrupted by at least one oxygen atom X is oxygen or --NR.sup.5 --; wherein R.sup.5 is hydrogen or alkyl,: Y is --OCO--, --COO--, --CONH-- or --OCONH--; n is 2 to 4; and, when n is 2, Z is alkylene optionally interrupted by at least one oxygen, sulfur or aryl, cycloalkyl or heterocyclic group, or, when n is 3, Z is alkanetriyl in which a carbon is optionally replaced by nitrogen or, when n is 4, Z is alkanetetrayl optionally interrupted by at least one oxygen atom and acid addition salts thereof are valuable polymer stabilizers.
化合物的化学式(I):##STR1##其中:R.sup.1是氢、烷基、烷氧基烷基、羧酰基或苯基烷基,或者是一个可选取代的四甲基哌啶基团;R.sup.2是氢、烷基、羧酰基或苯基烷基团;R.sup.3是烷基,可选地由至少一个氧原子中断;X是氧或--NR.sup.5--;其中R.sup.5是氢或烷基;Y是--OCO--、--COO--、--CONH--或--OCONH--;n为2到4;当n为2时,Z是烷基,可选地由至少一个氧、硫或芳基、环烷基或杂环基中断;当n为3时,Z是烷基三基,其中一个碳原子可选地被氮替代;当n为4时,Z是烷基四基,可选地由至少一个氧原子中断,以及其酸盐是有价值的聚合物稳定剂。