Natta, Guilio

Union Carbide, USA company, 1917-4Karl Ziegler, German chemist, 1898-1973 Guilio Natta, Italian chemist, 1903-1979... 

Until 1953, almost all vinyl polymerization of commercial importance was of the free-radical type. Since that time, however, ionic polymerization, chiefly in the form of coordination polymerization, has revolutionized the field. Following discoveries by Karl Ziegler (of the Max Planck Institute for Coal Research) and by Guilio Natta (of the Polytechnic Institute of Milan)—who jointly received the Nobel Prize in 1963 for this work—catalysts have been developed that permit control of the polymerization process to a degree never before possible. 

Karl Zeigler and Guilio Natta jointly received a Nobel Prize in 1963 for their work in developing these catalysts. 

The 1963 Nobel Prize was awarded to Karl Ziegler and Guilio Natta for their research in polymers. 

Mark was author or coauthor of another hundred articles while at Vienna during the period 1932-1938. His institute attracted such visiting scientists as Guilio Natta from Italy and others from all over the world. 

Ziegler Catalysts. For his work in the discovery of a new class of highly active catalysts for polymerization of ethylene, propylene, and dienes, Karl Ziegler shared the 1963 Nobel Prize in Chemistry with Guilio Natta whose contributions were predominantly related to polypropylene. Today, these catalysts together with the Phillips catalyst are responsible for the majority of the world s polyethylene production. Loosely defined, Ziegler catalysts are polyethylene catalysts derived from transition-metal halides and main group metal alkyls (46,50-53). In modem... 

Propylene Pol5rtners in EPST 1st ed., Vol. 11, pp. 597-619, by J. L. Jezl, Avisun Corp., and E. M. Honeycutt, Patchogue Pljrmouth Co. in EPSE 2nd ed., Vol. 13, pp. 464 531, by Richard B. Lieberman, Himont Research and Development Center, and Pier Camillo Barbe, Himont Italia, Centro Recerche Guilio Natta, Italy. 

Polyolefins. Polyolefin fibers are produced from the polymerization of ethylene or propylene gas. Karl Ziegler s research work with catalysts ultimately was responsible for the development of these polymers. Guilio Natta, working with Ziegler s catalyst, was able to form crystalline polymers of high molecular weight polypropylene. The fibers made from these polymers are melt-spun. The cross sections are round, and the fibers are smooth. They have extremely low dye affinity and moisture absorbance. 

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