NON-ACETAL INITIATORS FOR GROUP TRANSFER POLYMERIZATION

摘要

It is reported that a variety of trimethylsilyl enol ethers ofketones and aldehydes can be used to initiate GTP of methacrylates and acryl-ates.The new initiators are easy to prepare from ketones or aldehydes.PMMAand PMA with controlled molecular weight and low polydispersity were obtainedby using non-acetal initiators in the presence of bibenzoate,bifluo ide orHgl₂,The living nature of polymerization is shown by the correspondence oftheoretical and observed molecular weight and the preparation of A-B-A typetriblock copolymer with methacrylate and acrylate segments can be prepared.