Process for polymerising vinyl chloride

Verfahren zur Polymerisation von Vinylchlorid bei einer Temperatur zwischen 20 und 100°C und einem Druck von 5 bis 30 bar, wobei zum Abbruch der Polymerisation Derivate des Chromans eingesetzt werden. In the polymerisation of vinyl chloride (VC) at 20-100 degrees C and 5-30 bar, polymerisation is st...

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Bibliographic Details
Main Authors PERNER, THOMAS, LYNCH, JOHN, HAHN, SUSANNE, LUEDDECKE, ERIK
Format Patent
LanguageEnglish
French
German
Published 28.01.1998
Edition6
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Verfahren zur Polymerisation von Vinylchlorid bei einer Temperatur zwischen 20 und 100°C und einem Druck von 5 bis 30 bar, wobei zum Abbruch der Polymerisation Derivate des Chromans eingesetzt werden. In the polymerisation of vinyl chloride (VC) at 20-100 degrees C and 5-30 bar, polymerisation is stopped by adding a chroman derivative (I). Also claimed is the use of (I) for stopping polymerisation of VC. Preferably (I) is a 6-hydroxychroman of formula (IA); in which R = hydrogen or a 1-20C aliphatic or aromatic group; R = 1-30C organic group; and R , R , R = H or 1-4C alkyl. (I) especially is alpha -tocopherol (IB). Suspension polymerisation is used.
Bibliography:Application Number: EP19970112045