Process for producing nitrile rubbers in organic solvents
AssigneeLANXESS Deutschland GmbH
InventorsSven Brandau, Andreas Kaiser, Michael Klimpel, Christopher Barner-Kowollik, Christoph Duerr, Sebastian Emmerling
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Abstract
A novel and improved process is provided for producing nitrile rubbers through free-radical polymerization in specific solvent mixtures. The resultant nitrile rubbers can then be subjected to hydrogenation. The process features excellent time-conversion curves.
Claims15
Process for producing nitrile rubbers through free-radical polymerization of at least one conjugated diene, of at least one α,β-unsaturated nitrile and optionally of one or more other copolymerizable monomers, characterized in that at least two solvents are used, where the amount used of one solvent, known as the main solvent, is in the range from 70 to 99.9% by volume, based on the entirety of all of the solvents used.
Dependencies are inferred from the claim text.