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  • 1970-1974  (2)
  • 1973  (2)
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  • 1970-1974  (2)
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  • 1
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die vorliegende Arbeit befaßt sich mit dem Polymerisationsverhalten von Vinylferrocen und Äthinylferrocen in Anwesenheit einiger klassischer Initiatoren oder Katalysatoren. Äthinylferrocen wurde mittels Iauroylperoxid und B(iso-C3H7)3 als radikalischem Initiator und mittels substituierter Phosphinkomplexe von Übergangsmetallen als Katalysator polymerisiert; für den letzteren Fall wird ein Reaktionsmechanismus vorgeschlagen. Vinylferrocen wurde in Gegenwart von löslichen ZIEGLER-Systemen, z. B. AlEt2Cl/Cu(C5H7O2)2, zu polymerisieren, schlugen fehl. Im Gegensatz zu Äthinylferrocen konnte Vinylferrocen in guter Ausbeute mit dem System [-P(C6H5)2]2·Ni(C5H7O2)2 polymerisiert werden.Die thermischen und elektrischen Eigenschaften der erhaltenen Polymeren wurden untersucht.
    Notes: The present paper deals with the polymerization of vinylferrocene and ethynylferrocene in the presence of some initiators or catalysts used for the polymerization of classical vinyl and ethynyl monomers. Ethynylferrocene was polymerized with lauroyl peroxide and B(iso-C3H7)3 as radical initiators and with substituted phosphine-transition metal complexes as catalysts, a reaction mechanism being proposed for the last case. Vinylferrocene was polymerized with soluble ZIEGLER systems, e.g., AlEt2Cl/Cu(C5H7O2)2. Attempts to polymerize vinylferrocene with phosphine complexes and ethynylferrocene with soluble ZIEGLER catalyst, Al(iso-C4H9)3/VO(C5H7O2)2, were unsuccesfully. However, vinylferrocene unlike ethynylferrocene was polymerized with good yields in the presence of the system [-P(C6H5)2]2·Ni(C5H7O2)2.The polymers obtained were investigated with respect to their thermal and electrical properties.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Electron-microscopic studies of some proteid structures (synthesized in RF electrical discharge) and corresponding individual compounds resulting from acid hydrolysis were investigated. Some superior precellular structures with peptide linkages in cold plasma conditions were observed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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