Polymerization of vinyl monomers
AssigneeE. I. Du Pont de Nemours and Company
InventorVirgil Percec
Life of this patent
Estimating the term…
Abstract
Free radically polymerizable monomers may be polymerized using as an initiator a combination of a selected arylsulfonyl halide or alkylsulfonyl halide and a selected compound containing a lower valent transition metal atom. These polymerizations are sometimes living polymerizations, allowing control of polymer structure such as producing block copolymers and/or polymers with narrow molecular weight distributions. Useful monomers include styrenes and (meth)acrylate esters and amides. The products are useful as molding resins, for glazing, as film forming binders in coating compositions and have numerous other uses.
Claims18
A process for the polymerization of vinyl monomers other than styrene monomers, comprising, contacting a free radically polymerizable vinyl monomer with a first compound of the formula A1SO2X and a second compound which contains a transition metal atom in a lower valent state, wherein A1 is an aryl, substituted aryl, alkyl or substituted alkyl group, and X is chlorine, bromine or iodine.
Dependencies are inferred from the claim text.