Giulio Natta, Nobel Prize in Chemistry, 1963

Giulio Natta (26 February 1903 - 2 May 1979) was an Italian polymer chemist and Nobel laureate in Chemistry in 1963, with Karl Ziegler "for their discoveries in the field of the chemistry and technology of high polymers".

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From Nobel Lectures, Chemistry 1963-1970, Elsevier Publishing Company, Amsterdam, 1972:

Giulio Natta was born at Imperia on February 26, 1903. He graduated in Chemical Engineering at the Polytechnic of Milan in 1924 and passed the examinations entitling him to teach there in 1927. In 1933 he was established on the staff of Pavia University as a full professor and at the same time was appointed director of the Institute of General Chemistry at that University, where he stayed till 1935, that is until he was appointed full professor in physical chemistry at the University of Rome. From 1936 to 1938 he was full professor and director of the Institute of Industrial Chemistry at the Polytechnic of Turin. He has been full professor and director of the Department of Industrial Chemistry at the Milan Polytechnic since 1938.

Now a world famous scientist, Prof. Natta began his career with a study of solids by means of X-rays and electron diffraction. He then used the same methods for studying catalysts and the structure of some high organic polymers (the latter from 1934). His kinetic research on methanol synthesis, on selective hydrogenation of unsaturated organic compounds and on oxosynthesis led to an understanding of the mechanism of these reactions and to an improvement in the selectivity of catalysts.

In 1938 Prof. Natta began to study the production of synthetic rubber in Italy; he took part in research work on butadiene and was the first to accomplish physical separation of butadiene from 1-butadiene by a new method of extractive distillation.

In 1938 he began to investigate the polymerisation of olefins and the kinetics of subsequent concurrent reactions. In 1953, with financial aid from a large Italian chemical company, Montecatini, Prof. Natta extended the research conducted by Ziegler on organometallic catalysts to the stereospecific polymerization, thus discovering new classes of polymers with a sterically ordered structure, viz. isotactic, syndiotactic and di-isotactic polymers and linear non branched olefinic polymers and copolymers with an atactic (or sterically nonordered) structure. These studies, which were developed for industrial application in Montecatini's laboratories, led to the realisation of a thermoplastic material, isotactic polypropylene, which Montecatini were the first to produce on an industrial scale, in 1957, in their Ferrara plant. This product has been marketed successfully as a plastic material, by the name of Moplen, as a synthetic fibre, by the name of Meraklon, as a monofilament by the name of Merakrin and as packing film, by the name of Moplefan.

By X-ray investigations, Prof. Natta has also succeeded in determining the exact arrangement of chains in the lattice of the new crystalline polymers he has discovered.

No less important is his later research which led to the synthesis of completely new elastomers, in two different ways: by polymerization of butadiene into cis-1,4 polymers with a very high degree of steric purity and by copolymerization of ethylene with other a-olefins (propylene), originating extremely interesting materials such as saturated synthetic rubbers. The vulcanisation of these rubbers was made possible by the usual methods used for natural rubber, with the introduction of unsaturated monomeric units (terpolymers containing ethylene and propylene). The processes for the asymmetric synthesis, which allow the production of optically active macromolecules from optically inactive monomers, are of great scientific importance, due to their similarity to the natural biological processes. Other interesting results obtained by Natta in the field of macromolecular chemistry concern the synthesis of crystalline alternating copolymers of different couples of monomers and the synthesis of various sterically ordered polymers of non-hydrocarbon monomers.