Title:
BULK POLYMERIZATION PROCESS FOR PRODUCING POLYDIENES
Document Type and Number:
Japanese Patent JP2013237843
Kind Code:
A
Abstract:
To provide a method for producing cis-1,4-polydienes having a higher cis-1,4-linkage content and a narrower molecular weight distribution.
A process for preparing a polydiene includes the step of polymerizing conjugated diene monomer with a lanthanide-based catalyst system including the combination or reaction product of (a) a lanthanide compound selected from the group consisting of lanthanide organophosphates, lanthanide organophosphonates, and lanthanide organophosphinates, (b) an alkylating agent, and (c) a chlorine-containing compound, where the step of polymerizing takes place within a polymerization mixture that includes less than 20% by weight of solvent based on the total weight of the polymerization mixture.
Inventors:
LUO STEVEN
MACAULEY KEVIN
POULTON JASON T
MACAULEY KEVIN
POULTON JASON T
Application Number:
JP2013123902A
Publication Date:
November 28, 2013
Filing Date:
June 12, 2013
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
C08F4/54; C08F4/606; C08F136/06
Domestic Patent References:
| JPH11255813A | 1999-09-21 | |||
| JPH01158012A | 1989-06-21 | |||
| JP5345835B2 | 2013-11-20 | |||
| JP2005511806A | 2005-04-28 | |||
| JP2007526386A | 2007-09-13 | |||
| JPH04142308A | 1992-05-15 | |||
| JP2007186696A | 2007-07-26 | |||
| JPS6023406A | 1985-02-06 | |||
| JP2007514052A | 2007-05-31 |
Attorney, Agent or Firm:
Kenji Sugimura
Kazuyuki Tomita
Rintaro Takahashi
Kazuyuki Tomita
Rintaro Takahashi
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