Über den Einbau von Endgruppen bei der Polymerisation von Styrol und Vinylacetat mit Acylperoxyden

6533b872fe1ef96bd12d2c5c

RESEARCH PRODUCT

Über den Einbau von Endgruppen bei der Polymerisation von Styrol und Vinylacetat mit Acylperoxyden

M. Rugenstein K. Kossmann Von W. Kern

subject

chemistry.chemical_compound chemistry Polymer chemistry Thermolabile Styrene

description

Bei der peroxydischen Losungspolymerisation von Styrol und Vinylacetat wird der Einbau von brom-markiertem Benzoylperoxyd in Abhangigkeit von der Polymerisationstemperatur untersucht. Bei 50°C und darunter werden ausschlieslich verseifbare, brommarkierte Estergruppen gefunden. Bei 100°C beobachtet man auserdem nichtverseifbare Bromphenyl-Endgruppen. Beim Polyacrylnitril sind die eingebauten Endgruppen thermisch sehr labil und werden beim Erwarmen leicht abgespalten. Insertion of bromine-marked benzoylperoxide in dependence of the temperature of polymerisation in the peroxidic solvent-polymerisation of styrene and vinyl-acetate has been investigated. Exclusively hydrolysable bromine-marked estergroups were found at 50°C and at lower temperatures. Besides one observes nonhydrolysable bromophenylendgroups at 100°C. Inserted endgroups in polyacrylnitrile are very thermolabile and are easily split by slightwarming.

year	journal	country	edition	language
1954-01-01	Die Makromolekulare Chemie

https://doi.org/10.1002/macp.1954.020140109

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