The Goodyear & Tire Rubber Company

Danisco US Inc.

Timothy A Sabo

Joseph Charles McAuliffe

Gregory Marshall Whited

Marguerite A Cervin

Gopal K Chotani

Michael C Miller

Karl John Sanford

Anthony R Calabria

Richard La Duca

Erin L Spring

Frank James Feher

Stephan Rodewald

Tang Hong Wong

John Kaluen Kan

Thomas F McCall

Lawrence J Pickert

Christopher D Ploetz

Dane Kenton Parker

Steven M Ryba

Erin L Webster

The invention features methods for producing isoprene from cultured cells wherein the cells in the stationary phase. The invention also provides compositions that include these cultured cells and/or increased amount of isoprene. The invention also provides for systems that include a non-flammable concentration of isoprene in the gas phase. Additionally, the invention provides isoprene compositions, such as compositions with increased amount of isoprene or increased purity.

Compositions and methods for producing isoprene free of c5 hydrocarbons under decoupling conditions and/or safe operating ranges

Compositions and methods for producing isoprene free of C5 hydrocarbons under decoupling conditions and/or safe operating ranges

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.

Purification of isoprene from renewable resources

The invention features methods for producing isoprene from cultured cells wherein the cells in the stationary phase. The invention also provides compositions that include these cultured cells and/or increased amount of isoprene. The invention also provides for systems that include a nonflammable concentration of isoprene in the gas phase. Additionally, the invention provides isoprene compositions, such as compositions with increased amount of isoprene or increased purity.

The present invention relates to a process for synthesizing N-chlorothio-sulfonamides of the formula: ##STR1## comprising reacting a N,N'-dithiobis(sulfonamide) of the formula: ##STR2## with chlorine gas or sulfuryl chloride in the presence of a liquid solvent comprising a N-chlorothio-sulfonamide of formula I, wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl radicals having from about 1 to about 20 carbon atoms, aralkyl radicals having 7 to 20 carbon atoms, cycloalkyl radicals having from about 5 to about 20 carbon atoms, phenyl radicals, alkaryl radicals having from about 7 to 20 carbon atoms, and haloaryl radicals having about 6 to about 10 carbon atoms and where R.sup.1 is also selected from radicals having the formula: ##STR3## wherein R.sup.3 and R.sup.4 are individually selected from said alkyl, aralkyl, cycloalkyl, phenyl, alkaryl and haloaryl radicals and wherein R.sup.3 and R.sup.4 can be joined together to represent radicals selected from --CH.sub.2).sub.n, where n is an integer of 4 to 7 and --CH.sub.2).sub.2 O--CH.sub.2).sub.2.

Process for synthesizing N-chlorothio-sulfonamides

There is disclosed an improved process for the destruction of halogenated organic compounds through treatment with an alkali metal aromatic radical anion reagent wherein the improvement comprises the elimination of the water quench step.

Process for the dehalogenation of organic compounds

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Southington, OH, United States of America

Timothy A Sabo