Homogeneous Polymerization Process Using Evaporative Cooling

摘要

This invention relates to a continuous homogeneous solution phase polymerization process comprising contacting, in an evaporative reactor system at a temperature of 50° 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.

主权项

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