TWI554535B

The present invention provides a polybutadiene having improved workability and abrasion resistance. A polybutadiene according to the present invention has: (A) a Mooney viscosity (ML 1+4,100°C ) being 43 or more; (B) a ratio (Tcp/ML 1+4,100°C ) of 5 wt% toluene solution viscosity (Tcp) to Mooney vis...

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Bibliographic Details
Main Authors KANOU, YUUTO, SHODA, TAKESHI, AMBE, MITSUHARU
Format Patent
LanguageChinese
Published 21.10.2016
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
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Summary:The present invention provides a polybutadiene having improved workability and abrasion resistance. A polybutadiene according to the present invention has: (A) a Mooney viscosity (ML 1+4,100°C ) being 43 or more; (B) a ratio (Tcp/ML 1+4,100°C ) of 5 wt% toluene solution viscosity (Tcp) to Mooney viscosity (ML 1+4,100°C ) being 0.9 to 2.3; (C) a stress relaxation time (T80) being 10.0 to 40.0 seconds, which is a time until a torque is attenuated by 80% when the torque at the end of ML 1+4,100°C measurement is 100%; and (D) a molecular weight distribution (Mw/Mn) being 2.50 to 4.00.
Bibliography:Application Number: TW20154109340