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US 2014/0275448 A1Published application
Methods and apparatus for controlled single electron transfer living radical polymerization
AssigneeHenkel Corporation
InventorsAnthony F. Jacobine, John G. Woods, Scott Senuta, David P. Dworak, Debora E. Duch, John Mazzullo
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Abstract
This invention provides methods for controlled single electron transfer living radical polymerization (SET-LRP) of monomers with increased conversion, high molecular weights and low polydispersity by allowing the polymerization to proceed at low temperatures via a tubular reactor either made of copper or containing copper metal surface.
Claims33
A method of conducting a continuous SET-LRP process said method comprising:
- (i) charging a reactor system with a polymerizable reaction fluid comprising at least one polymerizable (meth)acrylate monomer, at least one solvent for said monomer, a metal salt, at least one ligand and at least one initiator;
- wherein said reactor system comprises a reaction vessel configured for continuous polymer production, with said reaction vessel comprising a catalytic surface wherein said catalytic surface is of copper or comprises copper which has been pre-treated with a reducing agent and has sufficient catalyst present to convert said polymerizable reaction fluid to a radical living polymer having a polydispersity of 1.4 or less;
- (ii) running a continuous SET-LRP reaction in said reaction vessel for a time and at a temperature sufficient to produce a desired level of polymer conversion having said polydispersity;
- and
- (iii) isolating said polymer.
2 more elements
Dependencies are inferred from the claim text.