Bis(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl)- amine derivatives and stabilized compositions

Abstract From the Canadian patent

Compounds derived from bis(1-hydrocarbyloxy-2,2,6,6tetramethylpiperidin-4-yl)amine are effective stabilizers in preventing the degradation of polymers subject to the deleterious effects of actinic light. These compounds have the formula:, wherein, n is 1 to 4, R1 and R2 are independently alkyl of 1 to 4 carbon atoms or together R1 and R2 are pentamethylene E is, for example, C1-C18 alkyl, T is a radical of valence n and when n = 1 then T is for, example H or C2-C20 alkanoyl, when n = 2 then T is for, example, -CO-, when n = 3 then T is for example, a triacyl, radical, and when n = 3 then T is for example, a tetravalent, acyl radical.