Procédé de polymérisation du propylène

Propylene dimer is obtained from propylene by contacting the latter at a temperature of at least 550 DEG F., and at superatmospheric pressure with a weakly acidic silica-alumina catalyst having ion-exchange characteristics. The catalyst is preferably prepared by contacting an acidic silica-alumina h...

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Bibliographische Detailangaben
1. Verfasser:	E. LIDOV,REX
Format:	Patent
Sprache:	fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Propylene dimer is obtained from propylene by contacting the latter at a temperature of at least 550 DEG F., and at superatmospheric pressure with a weakly acidic silica-alumina catalyst having ion-exchange characteristics. The catalyst is preferably prepared by contacting an acidic silica-alumina having ion-exchange characteristics with a basic aqueous solution (e.g. of sodium carbonate) and washing the contacted catalysts until the washings are neutral.