METHOD FOR AFTERTREATING ALPHA-OLEFIN POLYMER AFTER REACTION

摘要

PURPOSE: To produce an α-olefin polymer with few fisheyes continuously for a long time by separating the polymer from the reaction solvent by introducing a slurry containing the polymer and the solvent into a fluidized-bed drier and adding a deactivator for the polymerization catalyst to the fluidized slurry. ;CONSTITUTION: A process for producing an α-olefin polymer by a slurry polymerization process using a polymerization catalyst containing a transition metal compound and an organometallic compound, which comprises introducing a slurried mixture containing the polymer and the reaction solvent and discharged from the polymerizer into a fluidized-bed drier, adding a deactivator for the polymerization catalyst to the fluidized mixture, and separating the polymer from the solvent. In this process, an alcohol is used as the deactivator, and a part of the polymer withdrawn from the drier is forcedly recirculated through a bag filter communicating with the drier. An α-olefin polymer reduced in the formation of fisheyes can be produced. The clogging of the bag filter and the deposition of scales on the walls of the equipments can be prevented.;COPYRIGHT: (C)1996,JPO