Polymerization of Isoprene with η5-C5H 4(tert-Bu)TiCl3/MAO Catalyst

Journal of Polymer Science, Part A: Polymer Chemistry

Volumn 42, Issue 8, 2004, Pages 1841-1844

  Miyazawa, Akira ^a   Kase, Toshio ^b   Shibuya, Tomohiro ^b  

^a NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY AIST   (Japan)

^b ZEON CORPORATION   (Japan)

Author keywords

Cis polyisoprene; Isoprene polymerization; Living polymerization; Metallocene catalysts

Indexed keywords

ANTIOXIDANTS; BORON COMPOUNDS; CATALYSTS; GEL PERMEATION CHROMATOGRAPHY; LIVING POLYMERIZATION; MICROSTRUCTURE; MOLECULAR WEIGHT DISTRIBUTION; NUCLEAR MAGNETIC RESONANCE; POLYISOPRENES; STYRENE; THERMAL EFFECTS; TOLUENE;

CIS-POLYISOPRENE; ISOPRENE POLYMERIZATION; METALLOCENE CATALYSTS;

COMPLEXATION;

POLYMER SCIENCE;

EID: 1942473637     PISSN: 0887624X     EISSN: None     Source Type: Journal    
DOI: 10.1002/pola.11056     Document Type: Article

References (13)

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12. It has been reported that the catalytic activity of 1/MAO for the isoprene polymerization is much lower than that for 1,3-butadiene or styrene (see ref. 4). In our results, however, the 1/MAO showed high polymerization activity as well as that of 1,3-butadiene or styrene polymerizations. To clarify this different phenomenon, we investigated the isoprene monomer used in the polymerization. When the isoprene monomer was distilled just before polymerization, the catalyst showed high polymerization activity and a satisfactory reappearance. On the other hand, when the isoprene monomer was stored for 2 or 3 days at room temperature after distillation, the polymerization activity was appeared to be decreasing gradually.
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