Patent ID: 7163989

Claim:
A continuous solution polymerization process comprising: (a) forming a feed comprising one or more olefinically unsaturated monomers and a hydrocarbon solvent; (b) raising the pressure of the feed to at least 75 bar (c) passing the feed into a reaction zone, and contacting the feed with a single site catalyst to form a polymerization mixture; (d) adding a catalyst killer to the polymerization mixture; (e) subsequent to step (d), heating the polymerization mixture and subsequently reducing the pressure of the polymerization mixture, wherein upon said pressure reduction, the polymerization mixture passes through the lower critical solution phase boundary regardless of the initial polymerization pressure; (f) separating the polymerization mixture into a lean phase and a concentrated phase; (g) recycling at least a portion of the lean phase to step (a); (h) cooling the lean phase; and (i) drying the lean phase.