2,2,6,6-Tetramethyl-4-[(2-methyl-1-oxo-2-propenyl)oxy]-1-piperidinyloxy is used in the synthesis of Poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate). Poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) has application in batteries and solar cells.