Title:
共役ジエン系重合体の製造方法
Document Type and Number:
Japanese Patent JP6646437
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a conjugated diene polymer having less lithium residue left and therefore causing no problem of discoloration of a polymer and no problem of clogging of a solution filter hindering the production operation.SOLUTION: The method for producing a conjugated diene polymer includes (I) a step of performing polymerization reaction by using an organolithium compound as an initiator in a hydrocarbon solvent and adding a polymerization terminator to produce a conjugated diene polymer solution, (II) a step of adding a 8-18C aliphatic carboxylic acid in a molar amount of 0.01 to 0.5 times as much as lithium included in the organolithium compound and an amine-based compound in a molar amount of 0.1 to 2.0 times as much as lithium included in the organolithium compound to the conjugated diene polymer solution, and a step (III) of adding water in an amount of 1 to 150 pts.mass based on 100 pts.mass of the polymer to the conjugated diene polymer solution to produce a mixed liquid in this order.SELECTED DRAWING: None
Inventors:
Takayoshi Ishizaka
Hideki Yamazaki
Hideki Yamazaki
Application Number:
JP2015254595A
Publication Date:
February 14, 2020
Filing Date:
December 25, 2015
Export Citation:
Assignee:
Japan Elastomer Co., Ltd.
International Classes:
C08F6/08; C08C2/04; C08F236/04
Domestic Patent References:
| JP2001131220A | ||||
| JP6136034A | ||||
| JP11171949A | ||||
| JP2003040919A | ||||
| JP2016011405A | ||||
| JP62215613A | ||||
| JP2002356509A | ||||
| JP2003064124A | ||||
| JP2001507387A |
Foreign References:
| WO2010052916A1 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito