Title:
【発明の名称】共役ジエン重合体の水素化方法
Document Type and Number:
Japanese Patent JP3403174
Kind Code:
B2
Abstract:
This invention relates to a process for selectively hydrogenating the unsaturated double bonds of conjugated diene units of a homopolymer or copolymer. By using a highly active novel homogeneous organo titanium catalyst represented by formula (I) and lithium hydride (LiH) prepared in solution of organo lithium compound and hydrogen as a reducing agent, a polymer could be hydrogenated with significantly high yield and good reproducibility. In addition, this invention is characterized by a novel method in that when a copolymer containing a conjugated diene and vinyl-substituted aromatic hydrocarbon, the unsatured double bonds of conjugated diene units are selectively hydrogenated. In said formula where, Cp is a cyclopentadienyl group (C5H5); R1 and R2 are the same or different and are selected from halogen atom; R3 and R4 are the same of different and are selected from hydrogen atoms, alkyl or alkoxy group containing 1 to 12 carbon atoms, aryl or aryloxy groups containing 6 to 20 carbon atoms and cycloalkyl groups containing 6 to 20 carbon atoms.
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Inventors:
Koyun-Hoon
Kim Fu-Chae
Chaeon Theon-Keon
Kim Jae-Yoon
Hawan Jin-Man
Somieon-Seup
Kim Fu-Chae
Chaeon Theon-Keon
Kim Jae-Yoon
Hawan Jin-Man
Somieon-Seup
Application Number:
JP2000563700A
Publication Date:
May 06, 2003
Filing Date:
December 18, 1998
Export Citation:
Assignee:
Korea Kumho Petrochemical Co.,Ltd.
International Classes:
C07F17/00; C08C19/02; C08F4/46; C08F2/38; C08F8/04; C08F36/04; C08F297/04; (IPC1-7): C08F8/04; C08F2/38; C08F4/46
Domestic Patent References:
| JP11130828A | ||||
| JP9278677A | ||||
| JP6220123A | ||||
| JP6220122A | ||||
| JP6166710A |
Attorney, Agent or Firm:
Masayuki Shobayashi