公开(公告)号：DE69823230D1

公开(公告)日：2004-05-19

申请号：DE69823230

申请日：1998-12-23

Applicant: DOW CHEMICAL CO

Inventor： TAU LI-MIN ,  SWINDOLL D ,  KAO CHE-I ,  JAIN PRADEEP

IPC: C08F2/04 ,  C08F6/00 ,  C08F6/10

Abstract: The polymer recovery capacity of solution polymerization units is increased by flashing a polymer solution exiting olefin polymerization reactors to produce a concentrated polymer solution having a reduced temperate and a solids content from 10 percent to 40 percent by weight. Flashing of the polymer solution preferably occurs at a temperature at least 20° C. higher than the crystallization temperature of the concentrated polymer solution The concentrated polymer solution can be prepared adiabatically and can be subsequently finished in conventional polymer recovery units without increasing the risk of gel formation.

公开(公告)号：DE69823230T2

公开(公告)日：2004-08-19

申请号：DE69823230

申请日：1998-12-23

Applicant: DOW CHEMICAL CO

Inventor： TAU LI-MIN ,  SWINDOLL D ,  KAO CHE-I ,  JAIN PRADEEP

IPC: C08F2/04 ,  C08F6/00 ,  C08F6/10

Abstract: The polymer recovery capacity of solution polymerization units is increased by flashing a polymer solution exiting olefin polymerization reactors to produce a concentrated polymer solution having a reduced temperate and a solids content from 10 percent to 40 percent by weight. Flashing of the polymer solution preferably occurs at a temperature at least 20° C. higher than the crystallization temperature of the concentrated polymer solution The concentrated polymer solution can be prepared adiabatically and can be subsequently finished in conventional polymer recovery units without increasing the risk of gel formation.