The manufacturing method of conjugate diene rubber, and the constituent of the conjugate diene rubber

Japanese Patent JP6091748

B2

Process for producing conjugated diene rubber and composition of the same conjugated diene rubber are presented. The process includes polymerizing a conjugated diene or a conjugated diene and a vinyl aromatic hydrocarbon in a hydrocarbon solution by anionic polymerization using an organic alkali metal compound to obtain conjugated diene rubber containing alkali metal in the polymer chain end reacting a conjugated diene rubber containing alkali metal in the polymer chain end with at least one organic silane compound to obtain a modified conjugated diene rubber. After or during the modified conjugated diene rubber contacting with large amount of water, solvent and water content are removed from the modified conjugated diene rubber by applicable hot sources, wherein coupling ratio of modified conjugated diene rubber is less than 40 %, coupling ratio of modified conjugated diene rubber after contact with water is at least 50 %, and difference of Mooney viscosity (MV) between initial MVi (after water treatment) and MVs (after storage test in 90 °C, 80 % relative humidity and 40 hours) is less than or equal to 10, and a mixture of silica compound and conjugated diene rubber.

Shech-Chen
Lin Fu
Taxis

JP2011275048A

March 08, 2017

December 15, 2011

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Taiho fun Co., Ltd.

C08F8/42; C08F236/10; C08K3/36; C08L9/00

JP2009242788A
JP2010209254A
JP2010155935A
JP2009120647A
JP2006507371A
JP2004513978A

WO2005087814A1
US20110146877

Hironobu Onda
Makoto Onda
Atsushi Honda

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