The free radical propagation rate coefficient of 3-[tris(trimethylsilyloxy)silyl] propyl methacrylate was measured by pulsed-laser polymerization over the temperature range 288-323 K. The activation energy and pre-exponential factor were determined, by fitting the propagation data to the Arrhenius equation, as 19.9 kJ/mol and 1.44 x 10(6) 1 mol(-1) s(-1), respectively. This value for the activation energy is significantly less than that obtained for the lower alkyl methacrylates and is similar to that previously reported for dodecyl methacrylate. The Mark-Houwink-Kuhn-Sakurada (MHKS) values for poly(3-[tris(trimethylsilyloxy)silyl] propyl methacrylate) in tetrahydrofuran were also determined using size exclusion chromatography with on-line viscometry and refractive index detectors. The molecular weight-intrinsic viscosity distributions were measured for forty-four independent samples yielding MHKS constants of 1.67 x 10(-5) dl/g and 0.74 for K and alpha respectively.