Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Joseph P. Bridges0
Solon B. Williams0
Byron B. Unterbrink0
Date of Patent
March 25, 2008
0Patent Application Number
111049900
Date Filed
April 13, 2005
0Patent Primary Examiner
Patent abstract
In a method for the solvent extraction of butadiene from a mixture of hydrocarbons having four carbon atoms per molecule, which method inherently produces tars, the extraction process is operated with a tar loading level, relative to the solvent employed, of no more than about 1.6 wt. %.
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