the invention entitled &# 34 ; polymers containing polyalkylpiperidines and use thereof as stabilizers &# 34 ; provides a class of polymers in which groups containing sterically hindered polyalkylpiperidines are linked in the main chain of the polymers via bridging members containing 2 - hydroxy - 1 , 3 - trimethylene groups . the polymers show superior stabilizing effects for various synthetic polymers such as polyolefins against degradation thereof induced by light and / or heat . the polymers have advantages , as compared with known stabilizer compounds , that they hardly volatile upon processing with heating or during storage of articles containing thereof , and that they are resistant to extraction with solvents from articles containing thereof .