Exxonmobil Chemical Patents Inc.

General Electric Company

Azdel, Inc.

Sabic Innovative Plastics IP B.v.

Minquan Cheng

Michael Peter Nicoletti

David Ritchie Lumgair

Keith Holroyd Kuechler

John Richard Shutt

Jeffrey Alan Kabin

Jeffrey J Phillips

Erich Otto Teutsch

Helmut Fritz

Scott Michael Davis

Marc L DeChellis

Dan E Hendriksen

Gary F Janda

David R Lumgair, Jr

Russell D Sellen

Paul Anthony Bristow

Ralph Robert Buoniconti

Josef Kunkel

Daniel Scott Woodman

Klaus Muller

Gerhard Lauermann

Wilfried Borgmann

Venkatkrishna Raghavendran

Roland Walzl

Benny Ezekiel David

Roland Walzi

Richard Shutt

Daniel Wardell Sowle

Marc Dechellis

Wilried Borgmann

John B Reitz

Albert G Iii Dietz

Thomas B Gorczyca

Thomas P Feist

This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.

Method of removing dimethyl ether from an olefin stream

A composite sheet material that includes at least one porous core layer including a thermoplastic material and from about 20 weight percent to about 80 weight percent fibers based on a total weight of the porous core layer, and at least one skin covering a surface of the core layer. The skin includes at least one of a thermoplastic film, a fiber based scrim, a non-woven fabric, and a woven fabric.

Fiber reinforced thermoplastic sheets with surface coverings

Disclosed is a system of making an olefin derivative from a dilute olefin feed. Dilute olefin is sent to an olefin reaction unit to form an olefin derivative product. The olefin derivative product is recovered from the reaction unit while a vent stream is also removed. Olefin is separated from the vent stream, and the olefin is sent to the olefin reaction unit for additional processing.

Production of olefin derivatives

Disclosed is a method of purifying olefin containing oxygenate contaminants. The method incorporates the use of extractive distillation. Under the appropriate conditions, olefins containing very low levels of oxygenate contaminants can be recovered.

Process of removing contaminants from an olefin stream using extractive distillation

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Evansville, IN, United States of America

Minquan Cheng