Title:
PRODUCTION METHOD OF CONJUGATE DIENE POLYMER, RUBBER COMPOSITION, AND PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2018197354
Kind Code:
A
Abstract:
To provide a production method of a conjugate diene polymer, by which physical properties of a polymer to be produced are prevented from degrading as well as processability of the polymer can be improved, and to provide a rubber composition and a tire using the polymer.SOLUTION: The production method of a conjugate diene polymer comprises solution polymerization of a conjugate diene compound monomer (1) expressed by general formula (1) (where Rand Rrepresent a hydrogen atom or the like) in the presence of a metal catalyst. In the production method, a protonic organic compound (2) expressed by general formula (2): R-(X)-OH (where Rrepresents a hydrocarbon group having 9 to 30 carbon atoms; and X represents CO or the like) is used as a polymerization terminator, and/or a metal salt of the protonic organic compound (2) is used as an additive after terminating the polymerization.SELECTED DRAWING: None
More Like This:
Inventors:
WASHIZU KENSUKE
TOKIMUNE RYUICHI
TOKIMUNE RYUICHI
Application Number:
JP2018165870A
Publication Date:
December 13, 2018
Filing Date:
September 05, 2018
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
C08F2/42; B60C1/00; C08F2/04; C08F36/04; C08F212/06; C08L9/00
Domestic Patent References:
| JPS5566903A | 1980-05-20 | |||
| JPH08208751A | 1996-08-13 | |||
| JP2015040295A | 2015-03-02 |
Attorney, Agent or Firm:
Asahina Patent Office