Abstract: The monomer composition and sequence distribution in ethylene-propylene copolymers (EPCs) obtained with supported titanium/magnesium (TMC) and vanadium/magnesium (VMC) catalysts as well as with titanium trichloride was studied by means of 13C NMR spectroscopy. Based on these data ethylene-propylene reactivity ratios were determined. The EPCs obtained on these catalysts are inhomogeneous in composition; the soluble fractions contain larger amounts of propylene. The microstructures of copolymers obtained on TMCs and TiCl3 are similar. For EPCs obtained on VMCs, propylene “head-to-head” or “tail-to-tail” inversions and a more homogeneous distribution of propylene are observed.

Cite: Yechevskaya L.G. , Bukatov G.D. , Zakharov V.A. , Nosov A.V.
Study of the Molecular Structure of Ethylene-Propylene Copolymers Obtained with Catalysts of Different Composition
Makromolekulare Chemie up to 1993, continued as Macromolecular Chemistry and Physics. 1987. V.188. N11. P.2573-2583. DOI: 10.1002/macp.1987.021881109 WOS РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Nov 10, 1986
Published print:	Nov 1, 1987
Published online:	Mar 12, 2003

Identifiers:

Web of science:	WOS:A1987L013500009
Elibrary:	23623884
Chemical Abstracts:	1987:637642
Chemical Abstracts (print):	107:237642
OpenAlex:	W1501927677

Citing:

DB	Citing
Web of science	17
Elibrary	11
OpenAlex	21

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