PURIFICATION OF ISOPRENE FROM RENEWABLE RESOURCES

WIPO Patent Application WO/2011/075534

A3

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.

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FEHER FRANK J (US)
KAN JOHN KALUEN (US)
MCAULIFFE JOSEPH C (US)
MCCALL THOMAS F (US)
RODEWALD STEPHAN (US)
SABO TIMOTHY A (US)
WONG TANG H (US)
PLOETZ CHRISTOPHER D (US)
PICKERT LAWRENCE J (US)

PCT/US2010/060552

April 12, 2012

December 15, 2010

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DANISCO US INC (US)
GOODYEAR TIRE & RUBBER (US)
FEHER FRANK J (US)
KAN JOHN KALUEN (US)
MCAULIFFE JOSEPH C (US)
MCCALL THOMAS F (US)
RODEWALD STEPHAN (US)
SABO TIMOTHY A (US)
WONG TANG H (US)
PLOETZ CHRISTOPHER D (US)
PICKERT LAWRENCE J (US)

C07C7/04; B01D11/00; B01D11/04; C07C7/00; C07C11/18

US5849970A	1998-12-15
GB819188A	1959-09-02

KLIVANS, Norman, R. et al. (755 Page Mill RoadPalo Alto, CA, US)

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