Exxonmobil Chemical Patents Inc.

Christopher B Friedersdorf

James Richardson Lattner

Jo Ann M Canich

Gabor Kiss

Florin Barsan

John Patrick Soisson

Douglas A Berti

Kyle B Hancock

Trevan D MacArthur

The invention relates to purification of plasticizer, particularly for use in a polymer production process and plant. More particularly, the invention relates to purification of plasticizer, such as by gas stripping, for use in a process for in-line blending of polymer and plasticizer.

Purification of plasticizer and use thereof in a polymer production process and plant

This invention relates to a continuous homogeneous solution phase polymerization process comprising contacting, in an evaporative reactor system at a temperature of 50&#xb0; C. or more and a pressure of 100 kPa or more, a catalyst system, optionally, a hydrocarbon diluent, optionally, scavenger, and one or more monomer(s) to form a homogeneous polymerization medium, where the polymer product is dissolved in the reaction medium at 10 wt % or more (based upon the weight of the polymer present in the effluent at the exit of the reactor) and the catalyst system is dissolved in the reaction medium, and where the catalyst system comprises an activator and a coordination catalyst precursor compound and where all or part of the polymerization medium is evaporated during the polymerization.

Homogeneous polymerization process using evaporative cooling

This invention relates to a blocked process for producing polymers of high and low molecular weights utilizing the same polymer separator. The separator is operated in a different mode depending on the molecular weight of the polymer being produced such that the separation system is operated in flash mode for the separation of low molecular weight polymers and operated in lower critical solution temperature (LCST) mode for the separation of high molecular weight polymers.

Processes and apparatus for continuous solution polymerization

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Kingwood, TX, United States of America

Christopher B Friedersdorf