Inventors:
Frank J. FEHER - Copley OH, US
John Kaluen Kan - San Mateo CA, US
Joseph C. McAuliffe - Sunnyvale CA, US
Thomas F. McCall - Overland Park KS, US
Stephan Rodewald - Canal Fulton OH, US
Timothy Alan Sabo - Southington OH, US
Tang Hong Wong - Hudson OH, US
Christopher D. Ploetz - Fairway KS, US
Lawrence J. Pickert - Overland Park KS, US
International Classification:
C08F 6/12, C08F 136/08
Abstract:
Methods and apparatus for the purification of isoprene, such as the purification of a bioisoprene composition from fermentor off-gas. The apparatus includes two columns that process the fermentor off-gas, which includes isoprene and various impurities. A solvent is added to the off-gas in the first column, and the isoprene is stripped from the solvent in the second column. Also provided is a downstream further purification process. Also provided are the resulting purified isoprene compositions.