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8307745 
Journal Article 
Process development of iron catalyzed 3,4 polyisoprene 
Halasa, AF; Chang, CC; Hsu, WL 
2010 
0 
Rubber World
ISSN: 0035-9572 
242 
6 
32-36 
English 
A study was conducted to demonstrate process development of iron catalyzed 3,4 polyisoprene. The operating conditions selected for the investigations were based on small scale bottle studies. The study focused on designing a process that was used to prepare high 3,4 content, high Tg and low crystallinity polyisoprene by the iron catalyst system. Isoprene monomer was polymerized using the catalyst system consisting of iron acetylacetonate (Fe(AcAc) 3)/1,10-phenanthroline in toluene and the other with tri-isobutyl aluminum (TIBA) and water in hexane. The catalyst was prepared by pre-mixing the Fe(AcAc)3 with the 1,10-phen in toluene in a 2/1 ratio, while the reducing agent TIBAL was pre-reacted with water. The conditions selected for the investigations were also based on the bottle data with the primary objective of reducing the cement viscosity.