| abstract |
The compounds correspond to the formula: in which R1 and R5 each represent hydrogen or an alkyl, cycloalkyl or pentamethyl-1,2,2,6,6 piperidyl-4 radical, R2, R3 and R4 each represent an alkylene containing 2 to 12 carbon atoms, and R represents a radical [pentamethyl-1,2,2,6,6 piperidyl-4) -amino] -4 triazine-1,3,5 yl-2 substituted. |