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- W1961262511 abstract "The polymerization of cyclobutene in the presence of catalytic systems, prepared from transition metal compounds of the 3rd to the 8th group of the periodic table and organometallic compounds, is studied. The stereospecific polymerization to crystalline polymers having polycyclobutylene structure occurs preferably with vanadium or chromium—based catalysts. The chemical and physico-chemical structure determination and the analogies with the polymerizations of α-olefins and butadiene allow to make probable, for the two types of polycyclobutylenes, an erythro di-isotactic and respectively erythro di-syndiotactic structure. Die Polymerisation des Cyclobutens in Gegenwart von Katalysatorsystemen, die aus Übergangsmetall-Verbindungen der 3. bis 8. Gruppe des Periodensystems und metallorganischen Verbindungen hergestellt sind, wird untersucht. Die stereospezifische Polymerisation zu kristallinen Polymeren mit Polycyclobutylen-Struktur erfolgt vorzugsweise mit Katalysatoren auf Vanadium- und Chrom-Basis. Die chemische und physikalisch-chemische Strukturermittlung und die Analogien zu den Polymerisationen der α-Olefine und des Butadiens gestatten es, für die beiden Typen von kristallinen Polycyclobutylenen erythro-di-isotaktische bzw. erythro-di-syndiotaktische Struktur wahrscheinlich zu machen." @default.
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- W1961262511 date "1963-11-26" @default.
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- W1961262511 doi "https://doi.org/10.1002/macp.1963.020690113" @default.
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