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  • Springer  (2)
  • 1965-1969  (2)
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  • 1
    Publication Date: 1967-03-01
    Print ISSN: 0372-820X
    Electronic ISSN: 1435-1536
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 216-217 (1967), S. 249-255 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary Isopren was polymerized using Lithiumbutyl as catalyst, and the solubility, the thermal stabilty and the molecular weight distribution of the products were tested. We found that polyisoprenes with a molecular weight greater than 10 to 20 millions are not stable and rupture followed by cross-linking.
    Notes: Zusammenfassung Unter Verwendung von Lithiumbutyl als Initiator werden extrem hochmolekulare Polyisoprene aufgebaut und die Eigenschaften dieser Substanzen wie die Molekulargewichte und ihre Verteilung, das Löslichkeitsverhalten und die thermische Stabilität untersucht. Dabei stellte es sich heraus, daß Polyisoprene oberhalb eines bestimmten Molekulargewichtes instabil sind und unter Abbau- und Vernetzungsreaktionen zerbrechen. Bei Zimmertemperatur liegt dieses Grenzmolekulargewicht zwischen 10 und 20 Millionen.
    Type of Medium: Electronic Resource
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