Ziegler, Nobel prize

In the absence of any external influence such as a catalyst which is biased in favor of one configuration over the other, we might expect structures [VIII] and [IX] to occur at random with equal probability as if the configuration at each successive addition were determined by the toss of a coin. Such, indeed, is the ordinary case. However, in the early 1950s, stereospecific catalysts were discovered Ziegler and Natta received the Nobel Prize for this discovery in 1963. 

In the early 1950s, Ziegler observed that certain heterogeneous catalysts based on transition metals polymerized ethylene to a linear, high density material at modest pressures and temperatures. Natta showed that these catalysts also could produce highly stereospecific poly-a-olefins, notably isotactic polypropylene, and polydienes. They shared the 1963 Nobel Prize in chemistry for their work. 

In the mid-1950s, the Nobel Prize-winning work of K. Ziegler and G. Natta introduced anionic initiators which allowed the stereospecific polymerization of isoprene to yield high cis-1,4 stmcture (3,4). At almost the same time, another route to stereospecific polymer architecture by organometaHic compounds was aimounced (5). 

Before coordination polymerization was discovered by Ziegler and applied to propene by Natta, there was no polypropylene industry. Now, more than 10 ° pounds of it aie prepared each year in the United States. Ziegler and Natta shared the 1963 Nobel Prize in chemistry Ziegler for discovering novel catalytic systems for alkene polymerization and Natta for stereoregular- polymerization. 

Stereoregular polymerization of ethene and propene by catalysts developed by K. Ziegler and by G. Natta (shared Nobel Prize 1963). 

Giulio Natta (1903-1979) was born in Imperia, near Genoa, Italy, and received his Ph.D. in chemical engineering at Milan Polytechnic in 1924. After holding positions at the universities of Pavia, Rome, and Turin, he returned to Milan in 1938 as professor of industrial chemistry. For his work on developing methods of polymer synthesis, he shared the 1963 Nobel Prize in chemistry with Karl Ziegler. 

One of the landmark discoveries in catalytic chemistry was the Ziegler-Natta catalyst. The award of the Nobel prize in chemistry in 1963 to Ziegler and... 

This result led to Ziegler and Natta jointly receiving the Nobel Prize for Chemistry in 1963. 

Ziegler-Natta Also called Z-N. A general name for the family of olefin polymerization processes invented by K. Ziegler and G. Natta in the 1950s. Ziegler and Natta were jointly awarded the Nobel Prize for Chemistry in 1963 for their discoveries. See Natta, Ziegler (1). 

In the early 1950s Karl Ziegler in Germany and Giulio Natta in Italy found catalysts that polymerized olefins and dienes with stereoregularity and with mild polymerization conditions. For this revolutionary discovery they both won the Nobel Prize. Let us take the example of propylene, which we... 

Natta, a consultant for the Montecatini company of Milan, Italy, applied the Zeigler catalysts to other vinyl monomers such as propylene and found that the polymers were of higher density, higher melting, and more linear than those produced by the then classical techniques such as free-radical-initiated polymerization. Ziegler and Natta shared the Nobel Prize in 1963 for their efforts in the production of vinyl polymers using what we know today as solid state stereoregulating catalysts. 

Isotactic and syndiotactic polymers are collectively referred to as stereoregular polymers. They are always arranged in a head to tail (a, b) arrangement. Karl Ziegler and Giulio Natta, the co-winners of the 1963, Nobel Prize in Chemistry developed... 

One of the great discoveries of organomctallic chemistry was the catalyzed polymerization of alkenes at atmospheric pressure and ambient temperature. Vast quantities of polyethylene and polypropylene (over 15 million tons annually) are made by Ziegler-Natta catalysis. Ziegler and Natta received the Nobel prize in chemistry in 1963, and the importance of their work w stimulating interest in organometallic chemistry should not be underestimated. 

NATTA, GIULIO (1903—1979). An Italian chemist along with Karl Ziegler won the Nobel prize for chemistry in 1963 for his fundamental work on catalytic polymerization. In 1954 he developed isotactic polypropylene at his laboratory at the Polytechnic Institute of Milan, which led to wide application of various stereospecific polymers with organometallic catalysts... 

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