Exxon Research and Engineering Company

Other

Daniel J McHugh

Cyrus A Irani

Dennis G Peiffer

Martin Leo Gorbaty

Frederic Leder

Stephen S Kasegrande

Disclosed in this invention are novel road paving binder compositions and the method of making same. The compositions are made by combining an asphalt that contains sulfonate or sulfonic acid groups, a polymer preferably of butyl rubbers, styrene-butadiene linear diblock polymer, styrene-butadiene-styrene linear or radial triblock polymer and EPDM that has been sulfonated, and mixtures thereof, and a basic neutralizing agent that contains cations having a valence from +1 to +3. The amounts of each are effective to allow formation of one continuous phase or two interdispersed phases that do not segregate on standing at elevated temperatures associated with road paving. The amount of polymer is an amount less than 7 wt. % of total polymer-asphalt composition that is sufficient to produce an asphaltic composition having a viscosity at 135.degree. C. in the range of from about 150 cPs to about 2000 cPs or from about 3000 cPs to about 8000 cPs. The novel road paving asphaltic compositions have improved viscoelasticity, softening point, and storage stability. The compositions can be used as binders in road paving applications.

Polymer-modified functionalized asphalt compositions and methods of

Petroleum fractions may be separated into aromatic rich and paraffinic-rich hydrocarbon streams by the use of methanol/water mixtures having at least 10% water by volume. The paraffinic-rich stream is recovered as raffinate and the aromatic-rich as extract. After the extraction step additional water is added to the extract and raffinate streams where it acts as an anti-solvent to effect separation of the hydrocarbon from the solvent. The water and methanol are then separated for example by flash distillation or by using super critical CO.sub.2 as an extraction solvent.

Process for aromatics extraction from a 300.degree.-430.degree. F.

The instant invention relates to a process for removing dispersed matter from water which comprises, providing a flocculated salt selected from the group consisting of iron, aluminum and Group IIA of the Periodic Table of the Elements in said water, adsorbing at least a portion of said dispersed matter on said flocculated salt, providing an oil, adsorbing said flocculated salt on said oil, and separating said dispersed matter from said water along with said flocculated salt and said oil. This process especially relates to the separation of dispersed matter, e.g., oil, from sea water, wherein said Group IIA flocculated salt is provided by adjusting the pH of said sea water with a basic material to precipitate magnesium hydroxide. Alternatively, a basic carbonate salt may be added to sea water to precipitate calcium carbonate from sea water as the flocculated salt. The pH is adjusted to at least 7 but preferably not over 10.5 so as to eliminate further treatment of the water, to meet environmental quality standards, prior to discharge. The pH of sea water is preferably adjusted by addition of lime.

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Edison, NJ, United States of America

Daniel J McHugh