申请人:Meier Hans-Rudolf
公开号:US20130041076A1
公开(公告)日:2013-02-14
A compound of the formula (A) wherein the radicals R
1
are independently of one another methyl, ethyl or n-propyl, and X is C
2
-C
8
alkylene or C
2
-C
8
alkylene interrupted by sulfur, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.