Dow Global Technolgoies LLC

The Dow Chemical Company

Blue Cube IP LLC

Juergen Eiffler

Max Markus Tirtowidjojo

Kurt Frederick Hirsekorn

Debashis Chakraborty

William Jack Kruper, Jr

Thomas U Luebbe

Heinz Groenewald

Manfred Kokott

Marcus Wobser

Peter Wenzel

Shirley Shaw Sexton

Hua Bai

Avani Maulik Patel

William J Kruper

Thomas J Parsons

Patrick H Au-Yeung

Robin J Lee

Guenter A Jueptner

Holger Meemann

Christoph Froehlich

Kerstin Stranimaier

Holger Meeman

Patrick Ho-Sing Au-Yeung

William J Kruper Jr

Thomas Ulrich Luebbe

The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.

Adiabatic plug flow reactors and processes incorporating the same

The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.

Processes for the production of hydrofluoroolefins

The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20&#xb0; C. different from a desired reaction temperature.

Isothermal multitube reactors

The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500&#xb0; C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.

Process for the production of chlorinated and/or fluorinated propenes

Processes for the production of chlorinated and/or fluorinated propenes and higher alkenes

Isothermal multitube reactors and processes incorporating the same

The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.

Preparing copolymers of carboxylic acid, aromatic vinyl compound and hydrophobic polyalkylene oxide

Disclosed is a polycarbonate composition and process from making same, wherein introduction of a chain terminator and an acyl halide other than phosgene is after at least 25 percent of the hydroxyl groups in the dihydric phenol have been converted to chloroformate groups.

Polycarbonate preparation process

A stabilizer composition contains a) a phosphine of the general formula

Stabilizer composition

Growing community of inventors

Stade, Germany

Juergen Eiffler