Exxonmobil Chemical Patents Inc.

N Webb Robert

D Shaffer Timothy

Michael F McDonald, Jr

Scott Thomas Milner

T Milner Scott

D Hembree Richard

Courseaux Jean-Pierre

E Baud Richard

H Schatz Ralph

F McDonald Michael

J Wright Pamela

A transfer method and system () to discharge overflow slurry from a polymerization reactor () to a tank (). The method includes thermally isolating a conduit extension () at a distal end of a transfer line () from a quench fluid inlet () to a quench chamber (). The transfer system () is characterized by an annular thermal barrier around the conduit extension () that can include insulation () and/or thermally resistant support ring (), and a trap-free conduit () in fluid communication between the reactor () and the conduit extension (). The transfer method and system can reduce or eliminate incidents of transfer line () plugging in the manufacture of isoolefin polymers and copolymers.

Polymerization quench method and system

Provided for herein is a process for separating a hydrocarbon-rubber from a hydrofluorocarbon diluent comprising contacting a polymer slurry comprising the hydrocarbon-rubber dispersed within the hydrofluorocarbon diluent with a hydrocarbon solvent capable of dissolving the hydrocarbon-rubber, to produce a first liquid phase and a second liquid phase, and separating the first liquid phase from the second liquid phase.

Phase separation process utilizing a hydrofluorocarbon

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Kingwood, TX, United States of America

N Webb Robert