MANUFACTURING METHOD OF POLYOLEFINS WITH EXCELLENT FULL NOTCH CREEP TEST AND IMPROVED SAGGING TIME BY USING A MOLECULAR WEIGHT CONTROLLING AGENT, AND A POLYOLEFIN THEREOF

摘要

PURPOSE: A manufacturing method of polyolefin is provided to able to provide polyolefin which is especially suitable for blow molding because of low polymer melt index(MI), high polydispersity(PDI) and high full notch creep test to density or polymer melt index.;CONSTITUTION: A manufacturing method of polyolefin comprises a step of polymerizing olefin under the presence of a metallocene catalyst and a molecular weight controller. The polymerization is conducted in a cascade-CSTR reactor. The cascade-CSTR reactor comprises a first reactor, a second reactor and a post reactor. Polyolefin is manufactured by the manufacturing method, has multi-modal molecular weight distribution, and has weight average molecular weight of 100,000-700,000.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) First reactor; (BB) Second reactor; (CC) Post reactor