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US 6,737,488 B2Granted
Controlled free-radical polymerization products using new control agents
AssigneeBayer Aktiengesellschaft
InventorsPierre Vanhoorne, Rolf-Volker Meyer, Christophe Detrembleur, Robert Jérôme
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Abstract
A process for the production of polymers by means of pseudo-living free-radical polymerization is disclosed. The process entails (i) reacting a polymerizable vinyl monomer with nitrogen monoxide and at least one initiator to prepare a free-radical intermediate product, and (ii) polymerizing the intermediate product optionally together with one or more additional monomers and/or with a free-radical initiator.
Claims10
A process for the production of polymers comprising
- (i) reacting at least one polymerizable vinyl monomer with nitrogen monoxide and at least one free radical initiator to prepare a free-radical containing compound of the general formula (I),
- in which
- M represents a polymerizable vinyl monomer,
- p is an integer of 1 to 15 ,
- q is an integer of 1 to 15 and
- I1 and I2 independently one of the other is an organic radical of a free-radical initiator, and
- (ii) polymerizing at least one polymerizable vinyl monomer in the presence of the free radical containing compound of general formula (I) obtained in (i) optionally together with one or more additional free-radical initiators wherein the nitrogen monoxide is provided in gaseous form or is formed in situ by reaction of a nitrite compound and an activator component.
4 more elements
Dependencies are inferred from the claim text.