申请人:Ciba-Geigy Corporation
公开号:US04333868A1
公开(公告)日:1982-06-08
Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another denote alkyl, cycloalkyl or aralkyl, R.sub.3 denotes hydrogen or, conjointly with R.sub.1, denotes tetramethylene, R.sub.4 denotes hydrogen or lower alkyl or, conjointly with R.sub.2, denotes tetramethylene, R.sub.5 denotes hydrogen, alkyl, aralkyl, acyloxyalkyl, oxaalkyl or phenyl, R.sub.6 denotes hydrogen, alkyl, phenyl or the group ##STR2## or, conjointly with R.sub.5, denotes alkylene, R.sub.7 denotes hydrogen, alkyl, phenyl, benzyl or alkylphenyl or, conjointly with R.sub.5 or R.sub.6, denotes alkylene or, conjointly with R.sub.5 and R.sub.6, denotes alkanetriyl, R.sub.5, R.sub.6 and R.sub.7 together containing at least one carbon atom, Y denotes --O-- or --NH--, P denotes 1, 2, 3 or 4 and A denotes hydrogen or a group which is derived from an organic or inorganic oxygen acid A-(OH).sub.p, are suitable for stabilizing organic material against thermo-oxidative degradation.
式I的化合物##STR1##中,其中R.sub.1和R.sub.2分别表示烷基,环烷基或芳基,R.sub.3表示氢或与R.sub.1共同表示四亚甲基,R.sub.4表示氢或较低的烷基或与R.sub.2共同表示四亚甲基,R.sub.5表示氢,烷基,芳基,酰氧烷基,氧代烷基或苯基,R.sub.6表示氢,烷基,苯基或该基团##STR2##或与R.sub.5共同表示亚烷基,R.sub.7表示氢,烷基,苯基,苄基或烷基苯基或与R.sub.5或R.sub.6共同表示亚烷基或与R.sub.5和R.sub.6共同表示烷基三基,R.sub.5,R.sub.6和R.sub.7共同含有至少一个碳原子,Y表示--O--或--NH--,P表示1,2,3或4,A表示氢或源自有机或无机氧酸A-(OH).sub.p的基团,适用于稳定有机材料抵抗热氧化降解。