Title:
ポリイソプレンの製造方法
Document Type and Number:
Japanese Patent JP7404350
Kind Code:
B2
Abstract:
A method for manufacturing a polyisoprene, wherein it comprises a process of polymerizing isoprene under the presence of a polymerization catalyst composition containing a half metallocene cation complex represented by following general formula (I)(In formula (I), M represents a lanthanoid element, scandium or yttrium; CpR' represents substituted cyclopentadienyl, substituted indenyl or substituted fluorenyl; X represents hydrogen atom, halogen atom, alkoxy, thiolate, amide, silyl, or a C1-20 monovalent hydrocarbon group; L represents a neutral Lewis base; w represents an integer in the range of 0 to 3; and [B]- represents a non-coordinating anion),wherein each of the substituted cyclopentadienyl, the substituted indenyl or the substituted fluorenyl as CpR' in general formula (I) has at least one substituent group including Si therein.
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Inventors:
Shigenaga Takano
Shojiro Aida
Shojiro Aida
Application Number:
JP2021513177A
Publication Date:
December 25, 2023
Filing Date:
January 28, 2020
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
C08F136/08; C08F4/6192
Domestic Patent References:
| JP2008266523A |
Foreign References:
| WO2007129670A1 |
Other References:
DU Gaixia et al.,Copolymerization of isoprene with ethylene catalyzed by cationic half-sandwich fluorenyl scandium catalysts,Journal of Polymer Science, Part A: Polymer Chemistry,2015年,53,2898-2907,DOI:10.1002/pola.27769
ZHANG Lixin et al.,Unprecedented Isospecific 3,4-Polymerization of Isoprene by Cationic Rare Earth Metal Alkyl Species Resulting from a Binuclear Precursor,Journal of the American Chemical Society,2005年,127,14562-14563,DOI:10.1021/ja055397r
CHEN Jiazhen et al.,Metal and Counteranion Nuclearity Effects in Organoscandium-Catalyzed Isoprene Polymerization and Copolymerization,ACS Catalysis,CHEN,2017年,7,5214-5219,DOI:10.1021/acscatal.7b01621
ZHANG Lixin et al.,Unprecedented Isospecific 3,4-Polymerization of Isoprene by Cationic Rare Earth Metal Alkyl Species Resulting from a Binuclear Precursor,Journal of the American Chemical Society,2005年,127,14562-14563,DOI:10.1021/ja055397r
CHEN Jiazhen et al.,Metal and Counteranion Nuclearity Effects in Organoscandium-Catalyzed Isoprene Polymerization and Copolymerization,ACS Catalysis,CHEN,2017年,7,5214-5219,DOI:10.1021/acscatal.7b01621
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Kazuyuki Tomita
Mitsutsugu Sugimura
Kazuyuki Tomita