1971
DOI: 10.1002/macp.1971.021450120
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Einfluß verschiedener Initiatoren auf die Homo‐ und Copolymerisation des Trioxans

Abstract: ZUSAMMENFASSUNG:Die bei der Homo-und Copolymerisation von Trioxan neben der Wachstumsreaktion ablaufende Hydridiibertragungsreaktion wird von der Art des verwendeten Initiators beeintluSt. Sie ist bei Verwendung von Perchlorsaure, Bortritluoridatherat, Triphenylmethylhexafluorarsenat und Triathyloxoniumtetrafluorborat als Initiatoren deutlich unterdriickt, wenn man mit Molybdanylacetylacetonat und ganz besonders mit Zinntetrachlorid vergleicht. Beziiglich der gleichzeitig ablaufenden Transacetalisierungsreakti… Show more

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Cited by 24 publications
(7 citation statements)
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“…Similar results were obtained by copolymerization TOX with DOX in presence of BF 3 complex, the yield of copolymerization was reached between 65% and 77% with low molecular weight when the proportion of DOX units increases above 2.5 mol %. 54 The rate of consumption of both comonomers (TOX, DOX) is not the same, 28,55 DOX is consumed much faster and the copolymer formed initially is considerably enriched by DOX units, and an insoluble polymer is formed composed almost entirely of TOX units.…”
Section: Effect Of the Quantity Of The 13-dioxolane On The Yieldmentioning
confidence: 99%
“…Similar results were obtained by copolymerization TOX with DOX in presence of BF 3 complex, the yield of copolymerization was reached between 65% and 77% with low molecular weight when the proportion of DOX units increases above 2.5 mol %. 54 The rate of consumption of both comonomers (TOX, DOX) is not the same, 28,55 DOX is consumed much faster and the copolymer formed initially is considerably enriched by DOX units, and an insoluble polymer is formed composed almost entirely of TOX units.…”
Section: Effect Of the Quantity Of The 13-dioxolane On The Yieldmentioning
confidence: 99%
“…However, though using highly pure trioxane, the maximum degree of stability was limited to around 99.0%. However, the value of 99.0% was indeed a high value, considering the 10 wt % unstable fraction data reported by the Hoecst group 9 Effect of the methylal feed on the methoxy group found in the polymer.…”
Section: Resultsmentioning
confidence: 71%
“…The completely deactivated polymer showed a thermally unstable fraction below 0.5%. This value might be remarkable, considering the fact that the conventional as-polymerized acetal copolymer usually contained a 10 wt % thermally unstable fraction …”
Section: Resultsmentioning
confidence: 99%
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“…Da das Medium und die Art der Initiierung weitere EinfluBfaktoren fur das Copolymerisationsgeschehen darstellen, war es erforderlich, quantitative Beziehungen zwischen der Reaktivitat der Monomere, der Reaktionsfuhrung und den erhaltenen Produkten unter solchen Bedingungen, wie sie in[l] und[8] beschrieben sind, fur das Monomerpaar experimentell zu erarbeiten.…”
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