VERFAHREN ZUM POLYMERISIEREN VON TETRAHYDROFURAN

VERFAHREN ZUM POLYMERISIEREN VON TETRAHYDROFURAN

Tetrahydrofuran is polymerized in the presence of a catalyst system of (1) 5 to 50 percent by weight, based on the amount of tetrahydrofuran, of fuming sulfuric acid containing 15 - 43 wt. % of SO3, and (2) 0.05 - 200 percent by weight, based on the weight of the fuming sulfuric acid, of a perchlora...

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Bibliographische Detailangaben
Hauptverfasser: TANAKA, YOSHIAKI, OSAKA, SAKAI, TAKEYO, WAKAYAMA, MATSUDA, KAZUO, WAKAYAMA
Format: Patent
Sprache: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 is polymerized in the presence of a catalyst system of (1) 5 to 50 percent by weight, based on the amount of tetrahydrofuran, of fuming sulfuric acid containing 15 - 43 wt. % of SO3, and (2) 0.05 - 200 percent by weight, based on the weight of the fuming sulfuric acid, of a perchlorate. The reaction temperature is -20 to +10 DEG C.