Stereospecificity of catalytic systems M
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L.A. Rishina; Yu.V. Kissin; F.S. Dyachkovsky
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Article
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1976
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Elsevier Science
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English
β 177 KB
Stereoregularity parameters are measured by different i.r. methods for samples of polypropylene, obtained with catalytic systems MC13-AIEt 3 (M = Ti, V, Cr and Fe). The degree of stereoregularity of the fractions of these polymers insoluble in boiling n-heptane and n-octane decreases in the order :~