Manufacturing method of high melt strength polypropylene resin

摘要

Disclosed is a method of manufacturing a hyper-branched polypropylene resin having a low gel content and improved melt tension by controlling a polymer structure of diene-modified polypropylene through a process simplification using a metallocene catalyst system. In the present invention, a propylene and diene compound is polymerized using a catalyst to modify diene having a branching index of 0.95 or less, a gel content of 3% by weight or less, and an melt strength (ARES (Advanced Rheometric Expansion System) Melt Strength) of 5 g or more. It provides a method for producing a polypropylene resin.