1,3-BIS{8 (2,2,6,6-Tetraalkyl-4-piperidylidene)amino{9 guanidines as light stabilizers for polyolefins

摘要

Compounds of the formula: <IMAGE> wherein X is -H, -OH, -O. alkyl of 1 to 8 carbon atoms, or acyl of 2 to 10 carbon atoms, and R is alkyl of 1 to 8 carbon atoms are useful for stabilizing polyolefins against degradation by ultraviolet light.