Synthesis of atactic polypropylene: Propylene polymerization reactions with TiCl4–Al(C2H5)2Cl/Mg(C4H9)2 catalyst
Corresponding Author
Laura А. Rishina
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygin Street, Moscow 119991, Russia
Correspondence to: L. А. Rishina ([email protected])Search for more papers by this authorYury V. Kissin
Rutgers, The State University of New Jersey. Department of Chemistry and Chemical Biology, 123 Bevier Road, Piscataway, New Jersey 08854, USA
Search for more papers by this authorSvetlana S. Lalayan
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygin Street, Moscow 119991, Russia
Search for more papers by this authorVadim G. Krasheninnikov
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygin Street, Moscow 119991, Russia
Search for more papers by this authorCorresponding Author
Laura А. Rishina
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygin Street, Moscow 119991, Russia
Correspondence to: L. А. Rishina ([email protected])Search for more papers by this authorYury V. Kissin
Rutgers, The State University of New Jersey. Department of Chemistry and Chemical Biology, 123 Bevier Road, Piscataway, New Jersey 08854, USA
Search for more papers by this authorSvetlana S. Lalayan
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygin Street, Moscow 119991, Russia
Search for more papers by this authorVadim G. Krasheninnikov
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygin Street, Moscow 119991, Russia
Search for more papers by this authorABSTRACT
The Ziegler catalyst, a combination of TiCl4 and Al(C2H5)2Cl, is a very poor catalyst for propylene polymerization. However, the addition of Mg(C4H9)2 to the Ziegler catalyst at a [Mg]:[Al] molar ratio < 0.5 leads to the formation of a potent catalyst system for homopolymerization of propylene. Polymers produced with the TiCl4–Al(C2H5)2Cl/Mg(C4H9)2 catalyst are mostly atactic and amorphous, their minor partially crystalline isotactic components constitute merely 5–10% of the combined polymer material. Principal advantages of the TiCl4–Al(C2H5)2Cl/Mg(C4H9)2 catalyst for the manufacture of atactic PP include high activity, low cost, and the ease of use: the catalyst is prepared in situ from three commercially available components. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47692.
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