Lanxess Corporation

R Resendes

Gabor Kaszas

Gerhard Langstein

Martin Bohnenpoll

Stephan Glander

Mark J Drewitt

Rotraud Casper, Legal Representative

Shayna Odegaard

William E App

The invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer with at least one mineral filler that has been reacted with at least one organic compound containing at least one basic nitrogen-containing group and at least one hydroxyl group and, optionally, with at least one silazane compound before admixing the filler with the halobutyl elastomer and optionally curing the filled elastomer with sulfur or other curative systems.

Filled elastomeric compounds and methods for preparing same

The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCland a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.

Process for production of high-isoprene butyl rubber

The present invention relates to a process for producing polymers comprising repeating units derived from at least one isoolefin monomer, at least one multiolefin monomer and optionally further copolymerization monomers in the presence of at least one organic nitro compound and AlCl/water wherein the process is conducted in the absence of compounds selected from the group consisting of vanadium compounds, zirconium halogenid, and hafnium hallogenides.

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Sarnia, Canada

R Resendes