Title:
PRODUCTION OF CONJUGATED DIENE POLYMER
Document Type and Number:
Japanese Patent JPH0559103
Kind Code:
A
Abstract:
PURPOSE:To obtain a conjugated diene polymer having excellent rubber properties and processability by polymerizing a conjugated diene in the presence of a composite catalyst consisting of an organic compound of a rare-earth element, an organoaluminum compound and a halogen-containing Lewis acid compound and adding and reacting a specific coupling agent to the polymerization product. CONSTITUTION:A conjugated diene (preferably 1,3-butadiene and/or isoprene) is polymerized in the presence of a composite catalyst consisting of (A) an organic compound of a rare-earth element such as lanthanum, (B) an organoaluminum compound such as triethylaluminum and (C) a halogen- containing Lewis acid compound such as halide of aluminum element and the obtained polymer is made to react with a carboxylic acid compound consisting of a carboxylic acid, an acid halide and/or an acid anhydride as a coupling agent to obtain the objective diene polymer having low solution viscosity.
Inventors:
IKEMATSU TAKESHI
MIYAMOTO KOICHI
MIYAMOTO KOICHI
Application Number:
JP24017591A
Publication Date:
March 09, 1993
Filing Date:
August 28, 1991
Export Citation:
Assignee:
ASAHI CHEMICAL IND
International Classes:
C08C19/36; C08F8/00; C08F36/04; C08J3/24; C08L9/00; (IPC1-7): C08C19/36; C08F36/04; C08J3/24; C08L9/00
Attorney, Agent or Firm:
Nozaki
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