Using three different compounds (1-methoxy-2-methyl-1-trimethylsiloxy propene

ethyl 3-ethoxy-3-trimethylsiloxy acrylate and ethyl 2-butyl-3-ethoxy-3-trimethyl-siloxy acrylate) as initiator and Et4 NHF2 as catalyst the initiation activity of some group transfer polymerization (GTP) monomers was compared. The results show that acrylonitrile has highest initiation activity and methacrylate monomers have lowest initiation activity. It is also reported that selective GTP of MA and MMA can be carried out by using ETSA initiator.