Ziegler-natta catalyst for olefin polymerization, polyolefin preparation method, and polyolefin resin

Abstract

The Ziegler-Natta catalyst for olefin polymerization is disclosed, comprising: (i) a Ziegler-Natta main catalyst for olefin polymerization, comprising a titanium compound of Formula 1, a magnesium compound of Formula 2, a first internal electron preform of Formula 3, and a second internal electron preform selected from the group consisting of at least one compound of Formulas 4 and 5; (ii) an organoaluminum compound of Formula 6; and (iii) an external electron preform of Formula 7. Methods for preparing polyolefins and polyolefin resins are also disclosed. Disclosed are a Ziegler-Natta catalyst for olefin polymerization comprising: (i) a Ziegler-Natta pro-catalyst for olefin polymerization a titanium compound represented by Formula 1, a magnesium compound represented by Formula 2, a first internal electron donor represented by Formula 3, and at least one second internal electron donor selected from the group consisting of compounds represented by Formulas 4 and 5; (ii) an organoaluminum compound represented by Formula 6; and (iii) an external electron donor represented by Formula 7, a polyolefin preparation method, and a polyolefin resin.