Arlanxeo Deutschland Gmbh

Lanxess Deutschland Gmbh

Alicia Le-Sattler

Heike Kloppenburg

Paul Wagner

Hermann-Josef Weidenhaupt

Hanns-Ingolf Paul

Ulrich Feldhues

Rolf Feller

John Lovegrove

Melanie Wiedemeier-Jarad

Heinz Unterberg

Alex Lucassen

Thomas Gross

Wolfgang Krumbe

Dave Hardy

Yan Zhang

Martin Siebuerger

The invention relates to a process for determining the degree of branching of modified polymers wherein the polymers are modified in the sense that their degree of branching after polymerization was increased once more, wherein the modified polymers are treated with a polar transformation mixture comprising a compound of general formula (I)R&#x2014;S&#x2014;S&#x2014;R&#x2003;&#x2003; (I)wherein the Mooney viscosity (ML 1+4 at 100&#xb0; C.) of the polymers is determined before and after the treatment with the polar transformation mixture and the degree of branching is determined.

Determination of the degree of branching

Vulcanizable polymer compositions based on backbone-functionalized polydienes having the general formula (I): 

Functionalized polymer composition

The invention relates to neodymium-catalyzed polybutadienes (NdBR) comprising &#x3e;95 wt % of cis-1,4 units and &#x3c;1 wt % of 1,2-vinyl content, based on the neodymium-catalyzed polybutadiene, wherein the NdBR evinces a molar mass breakdown of not less than 25%.

NdBR with molar mass breakdown

The invention relates to methods for achieving a step increase in the Mooney viscosity in production of high-molecular-weight polybutadiene having &#x3e;95% by weight content of cis-1,4 units and &#x3c;1% by weight 1,2-vinyl content, characterized in that

High-mooney NDBR having mooney jump

The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like styrene butadiene rubber products and butadiene rubber products as well as a process for the production thereof. The invention further relates to a device suitable to accomplish said process.

Process for the production of water and solvent-free polymers

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Bochum, Germany

Alicia Le-Sattler