Piperidine derivatives and their use as stabilizers

US3940363A · kind A · utility

Assignee

• Sankyo Holdings Co., Ltd. · JP

Inventors

• Keisuke Murayama
• Syoji Morimura
• Takao Yoshioka · Tokyo, JP
• Tomoyuki Kurumada

Key dates

• Filing date: Jul 19, 1973
• Grant date: Feb 24, 1976
• Expiry date: Jul 19, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K15/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Piperidine derivatives having the formula ##SPC1## Wherein R' represents an alkylene group which may be interrupted with an oxygen or sulfur atom, an alkenylene group, an alkynylene group, an aralkylene group, an aliphatic diacyl group, a group of the formula ##EQU1## IN WHICH N IS AN INTEGER OF 1 OR 2 AND X is an alkylene group, or o-, m- or p-phenylene group or the carbon atoms of CO groups may be directly joined in the absence of X or a group of the formula ##EQU2## in which Y is an alkylene group or O-, m- or p-phenylene group; R represents hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkoxycarbonylalkenyl group, an aliphatic, aromatic or heterocyclic monoacyl group, a N-substituted carbamoyl group, a N-substituted thiocarbamoyl group or a monovalent radical derived from an oxoacid; R.sub.1 and R.sub.2 individually represent a lower alkyl group or they jointly represent, together with the oxygen atoms, a group of the formula ##SPC2## In which R.sub.3 is hydrogen atom, a lower alkyl group or hydroxymethyl or a group of the formula ##SPC3## In which R.sub.4 and R.sub.5 may be the same or different and each represents hydrogen atom, a lowe…