This paper reports on some first results on the group transfer polymerization (GTP) of several methacrylates
with ethyl 3-ethoxy-3-trimethylsiloxy acrylate (ETSA)
ethyl 2-butyl-3-ethoxy-3-trimethylsiloxy acrylate (BTSA) and dimethyl ketene methyl trimethylsilyl acetal (MTS) as initiator and Et4 NHF2 as catalyst. Polymers with narrow molecular weight distribution and predetermined molecular weight were obtained. PMMA with higher polydispersities are obtained when highl levels of the catalyst are used. The effect of the catalyst concentration onmonomer conversion was studied. Some PMMA of high molecular weight (Mn>2×105) were obtained.