Dow Global Technolgoies LLC

The Dow Chemical Company

Gene W Bachman

Charles William Lipp

Michael D Cloeter

Raymond M Jones

Mark J Bartel

Brady J Coomes

Scott J Daigle

Steve F Janda

Robert K Brown

A mixer for a continuous flow reactor and methods for forming the mixer and the operation thereof. The mixer allows for segmentation of a primary reactant flow through a plurality of ports into many smaller flows that are injected as jets into a secondary reactant flow in channels of the mixer. The channel has a constant width dimension to enhance even flow distribution and local turbulence of the primary and secondary reactant flows. The constant width dimension of the channel and the size and number of the ports of the mixer can be configured to ensure the primary reactant flow injected into the channel directly impinges on a surface of the channel that is opposite the injection point at normal operating conditions.

Mixer for continuous flow reactor

A mixer () for a continuous flow reactor () and methods for forming the mixer and the operation thereof. The mixer allows for segmentation of a primary reactant flow through a plurality of ports () into many smaller flows that are injected as jets into a secondary reactant flow in channels of the mixer. The channel () has a constant width dimension to enhance even flow distribution and local, turbulence of the primary and secondary reactant flows. The constant width dimension of the channel and the size and number of the ports of the mixer can be configured to ensure the primary reactant flow injected into the channel directly impinges on a surface () of the channel that is opposite the injection point at normal operating conditions.

Mixer for continuous flow reactor, continuous flow reactor, method of forming such a mixer, and method of operating such a reactor

A process for purifying propylene oxide containing an unacceptable quantity of poly(propylene oxide) contaminant having a molecular weight of at least about 50,000, which comprises contacting the so-contaminated propylene oxide with a quantity of a substantially non-calcined diatomaceous earth for a time and under conditions sufficient to reduce the amount of such contaminant in such propylene oxide to acceptable levels, and recovering the purified propylene oxide product. Also, processes for making polyether polyols from such purified propylene oxide products, and for making high resilient flexible polyurethane foams from such polyols.

Purification of propylene oxide

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Baton Rouge, LA, United States of America

Gene W Bachman