Tetrahydrofuran polymerisation - using antimony pentachloride catalyst in presence of carboxylic acid or anhydride

Tetrahydrofuran (I) is polymerised using SbCl5 as catalyst in presence of >=1 carboxylic acid or anhydride in which the SbCl5 is pref. dissolved, allowing a reduction in catalyst concn. The catalyst also contains an alcohol as activator. Catalyst activity is substantially increased, the polymeris...

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Hauptverfasser:	HERMANN,.HUCHLER,OTTO, WINDERL,SIEGFRIED,.DR, MUELLER,HERBERT,.DR, HOFFMANN,HERWIG,.DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Tetrahydrofuran (I) is polymerised using SbCl5 as catalyst in presence of >=1 carboxylic acid or anhydride in which the SbCl5 is pref. dissolved, allowing a reduction in catalyst concn. The catalyst also contains an alcohol as activator. Catalyst activity is substantially increased, the polymerisation rate and output being approx. doubled.