This work describes a facile method by which a polymerizable hindered amine light stabilizer, 4-(10-undecylidene)-2,2,6,6-tetramethylpiperidine, was prepared in a single-step procedure by means of a Wittig reaction. The monomer was successfully copolymerized with ethylene with a rac-[dimethylsilvlenebis(4,5,6,7-tetrahydro-1-indenyl)] zirconium dichloride/methylalumoxane catalyst system. (C) 2004 Wiley Periodicals, Inc.