Patent ID: 6420516
Filing Date: 2002-07-16
Classification: B01J,C08F

Abstract:
A solution polyolefin process, comprising the steps of:a) polymerizing one or more olefin monomers in at least one boiling reactor in a sufficient amount, of solvent to produce a polymer solution within the boiling reactor having a solids content from 3% to 24% by weight and wherein the polymer solution has a temperature of about 150Â° to about 260Â° C.; b) flashing the polymer solution, without preheating, to produce a concentrated polymer solution having a reduced temperature and a polymer content from 10% to 40% by weight where the flashing occurs inside the boiling reactor; c) heating the concentrated polymer solution; and d) finishing the heated concentrated polymer solution to produce a finished polymer having a solvent content of from 0 to 2000 ppm.