Shell Oil Comapny

David Karl Schisla

Ye-Mon Chen

Eugene F Lutz

Robert Stephen Tomaskovic

Michael John Modic

Rudolf Jacobus Wijngaarden

Charles M Arbore

Eleanor Meyer De Groot

Rudolf Jacobus Winjngaarden

Timothy D Hoewing

A method for extracting and separating extractive components from fluids is provided. A first fluid and an extraction fluid are added to a vessel, thereby creating a two-phase two-layer system, wherein the first fluid and the extraction fluid are discrete and the two-phase system has a first fluid/extraction fluid interface. The two-phase system is then agitated, wherein the first fluid phase and the extraction fluid phase remain as substantially discrete layers. A means for communication between the first fluid and the extraction fluid is provided. The communication of the phases results in the extractive components being extracted from the first fluid into the extraction fluid. Agitation is stopped and the first fluid is recovered having reduced extractive components.

Process for the extraction of material from multi-phase systems

In a process for producing hydrogenated block copolymers of conjugated dienes and/or vinyl aromatic hydrocarbons which comprises anionically polymerizing the monomers in an inert hydrocarbon solvent in the presence of an alkali metal initiator whereby a polymer cement is produced, contacting the cement with hydrogen under hydrogenation conditions in the presence of a hydrogenation catalyst, and then removing the hydrogenation catalyst residue by washing the polymer cement with water or an aqueous acid, the improvement which comprises reducing the viscosity of the polymer cement by polymerizing the block copolymer under conditions such that the vinyl content of the polymer produced in the polymerization step is in the range from 45 to 80 percent by weight.

Enhanced hydrogenation catalyst removal from block copolymers by reduction in polymer cement viscosity by increasing the vinyl content of the block copolymers

This invention relates to solid secondary alkyl sulfate/zeolite-containing surface active compositions which are formed by crystallization and which contain at least about 80 percent by weight of secondary alkyl sulfate and zeolite. These compositions are substantially free of unreacted organic matter and water. The invention further relates to a process for preparing these solid secondary alkyl sulfate/zeolite-containing compositions.

Secondary alkyl sulfate/zeolite-containing surfactant compositions

This invention relates to solid secondary alkyl sulfate-containing surface active compositions which are formed by crystallization and which contain at least about 80 percent by weight of secondary alkyl sulfate. These compositions are substantially free of unreacted organic matter and water. The invention further relates to a process for preparing these solid secondary alkyl sulfate-containing compositions.

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Sugar Land, TX, United States of America

David Karl Schisla