High-mooney NDBR having mooney jump

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United States of America Patent

PATENT NO 9845366
APP PUB NO 20150252126A1
SERIAL NO

14405814

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Abstract

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

    1) at least one monomer selected from butadiene and/or isoprene is polymerized at temperatures of from −20° C. to 150° C. in the presence of at least one inert, organic solvent and in the presence of at least one catalyst based on neodymium carboxylate,2) the polymerization is then terminated by addition of protic compounds and3) then sulphur chlorides are added to the polymer, and prior to addition these sulphur chlorides are treated with a carboxylic acid, fatty acid and/or fatty acid ester.

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Patent Owner(s)

Patent OwnerAddress
ARLANXEO DEUTSCHLAND GMBHALTE HEERSTR 2 DORMAGEN 41540

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gross, Thomas Wuelfrath, DE 65 456
Hardy, Dave Leiderdorp, NL 4 22
Kloppenburg, Heike Duesseldorf, DE 18 67
Le-Sattler, Alicia Bochum, DE 6 28
Lucassen, Alex Sassveld, NL 14 54
Zhang, Yan Leverkusen, DE 881 7426

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