| 摘要 |
<p>DEMULSIFICATION OF BITUMEN EMULSIONS USING POLYALKYLENE POLYAMINE SALTS (D#75,898-F) A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polyamine salts prepared by contacting poly(ethyleneimines) with organic or inorganic acids. The polyamines have a molecular weight of at least 1,000. To resolve the bituminous petroleum emulsions, the process is carried out between 25 and 160.degree.C wherein the demulsifier of the invention is contacted with the bituminous emulsion. -I-</p> |
