Reference : A process for the synthesis of alkoxyamines and their use in controlled radical polym...
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Physical, chemical, mathematical & earth Sciences : Chemistry
A process for the synthesis of alkoxyamines and their use in controlled radical polymerization
Detrembleur, Christophe mailto [> Bayer AG > > >]
Gross, Thomas [ > > ]
Meyer, Rolf-Volker [ > > ]
Canadian Intellectual Property Office
CA 2432910
EP20020013950 20020625
Bayer AG
C07C253/30; C07C255/16; C07D211/94; C07D295/24; C08F4/00; (IPC1-7): C07D211/94; C08F2/38
C07D211/94; C07D295/24; C08F4/00
[en] radical polymerization ; nitroxide-mediated polymerization (NMP)
[en] A one-pot process for the preparation of alkoxyamines conforming to formulae (I) or (II), preferably (I) (See formulas I and II) is disclosed. The process entails (1) reacting of an oxidizing agent (A) with a sterically hindered secondary amine of the general formula (III), (See formula III) in a water-containing medium to form a reaction product and an aqueous phase , (2) removing of the aqueous phase, and (3) adding to the reaction product a free-radical initiator (B) under conditions that promote the decomposition of the initiator to generate free radicals. Also disclosed is a process for polymerizing monomers, the process using the alkoxyamine prepared by the inventive process.

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