POLYMERIZATION USING LATENT INITIATORS

摘要

The present invention relates to a novel, rapid initiation mechanism for polymerising (meth)acrylates using latent initiators based on N-heterocyclic carbene compounds which can be thermally activated, such as, in particular, N-heterocyclic carbene-CO2 compounds, carbene-CS2 compounds or carbene-metal compounds (NHC). Using the new initiation mechanism, molecular weights of 10 000 to over 500 000 g/mol and a narrow polydispersity can be achieved for polymerisation of MMA. The polymerisations can be carried out both without solvent and in solution.

主权项

1. A method for initiating a polymerisation of vinyl monomers, the method comprising:
treating a monomer mixture or a monomer solution of the vinyl monomers with a protected N-heterocyclic carbine, and initiating the polymerisation by raising temperature to an initiation temperature of at least 40° C., thereby obtaining a polymer, wherein the vinyl monomers are acrylates, methacrylates, styrene, monomers derived from styrene, or any mixture thereof.