| 摘要 |
<p>The invention provides a method of inhibiting undesirable polymerization reactions during distillation of conjugated dienes in dimethylformamide as extractive solvent by addition of furfural and furfural polycondensates as polymerization inhibitors. The quantity of inhibitors present is controlled so as to maintain from about 0.01 to about 10% by weight, based on the solvent, of furfural and about 0.5 to about 10% by weight, based on the solvent, of the furfural polycondensate, throughout the distillation.</p> |
