Elastomeric copolymer of aromatic vinyl compounds and butadiene

An elastomeric copolymer of an aromatic vinyl compound and butadiene prepared by a solution polymerization method, which has a glass transition temperature of not less than -50°C and contains polymer chains modified with a trifunctional or tetrafunctional coupling agent, and which contains not less...

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Main Authors OKAMOTO, YASUSHI, SEKI, TOMOAKI, SAITO, YUICHI, IMAI, AKIO, FURUKAWA, HIROSHI, YOSHIDA, NOBUYUKI
Format Patent
LanguageEnglish
French
German
Published 04.09.1985
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
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Summary:An elastomeric copolymer of an aromatic vinyl compound and butadiene prepared by a solution polymerization method, which has a glass transition temperature of not less than -50°C and contains polymer chains modified with a trifunctional or tetrafunctional coupling agent, and which contains not less than 3 % by weight to less than 23 % by weight, based on the whole polymer chains, of polymer chains having a molecular weight of at least 5 times a molecular weight corresponding to a peak appearing on the low molecular weight side of a high performance liquid chromatogram of the elastomeric copolymer. The elastomer- ic copolymer has an excellent processability and shows a low rolling resistance and a high wet grip characteristic when used as a rubber component in tires.
Bibliography:Application Number: EP19850101864