The discovery of isotactic polypropylene and its impact on pure and applied science

Abstract

This article recalls some aspects of the fascinating history of the discovery by Giulio Natta and his research group of the stereoselective polymerization of propylene and the understanding of the relationships between structure and properties of semicrystalline polymers. The impact of the discovery of isotactic polypropylene and stereoregular polymers on pure and applied science is briefly outlined. © 2003 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 391–395, 2004

Influence of Internal Donors on the Performance and Structure of MgCl2 Supported Titanium Catalysts for Propylene Polymerization

“…The wider applications of polypropylene in vast end uses is due to good mechanical properties, chemical resistance, and excellent insulation characteristics. [10][11][12] Over time, the Ziegler-Natta catalysts have evolved from simple TiCl 3 crystals to TiCl 4 supported on morphological MgCl 2 crystallites. MgCl 2 is the support of choice because of its similar crystal structure to that of TiCl 3 , the active catalyst species.…”

Polypropylene Resin Flowability Improvement Through Catalyst Morphology

“…Ziegler-Natta catalysts are used for manufacturing the stereo-regular polypropylene, which is high performance MgCl 2 -supported titanium catalyst [1][2][3][4][5][6][7][8][9][10][11][12] . The first and second generations of Ziegler-Natta catalysts used for the propylene polymerization were based on TiCl 3 crystals.…”

Nature of Phthalates as Internal Donors in High Performance MgCl2 Supported Titanium Catalysts

“…High performance MgCl 2 supported Ziegler-Natta catalysts have played dominant role in industrial polyolefin production [1][2][3][4][5] by providing high productivity and stereoregularity [6][7][8][9][10][11]. Internal donors play the pivotal role in controlling productivity and stereo-specificity of these catalysts [12][13][14][15][16][17][18].…”