PROCESS FOR THE ISOLATION OF POLYMER FRACTIONS

The invention relates to a process for isolating, from a polymer comprising repeating units which are individually of Formula (X) in which Y is P or N, Ar & Ar are bivalent aromatic groups, Ar is a monovalent aromatic group, and the units of Formula (X) may be the same or different, a molecular...

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Bibliographische Detailangaben
Hauptverfasser:	MORGAN, JOHN, DYLAN, VERES, JANOS, BROWN, BEVERLEY, ANNE, ALLEN, JOANNE, VICTORIA, LEEMING, STEPHEN, WILLIAM
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAGNETOGRAPHY METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHOTOGRAPHY PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a process for isolating, from a polymer comprising repeating units which are individually of Formula (X) in which Y is P or N, Ar & Ar are bivalent aromatic groups, Ar is a monovalent aromatic group, and the units of Formula (X) may be the same or different, a molecular weight fraction which is especially suitable for use as a charge transport material. L'invention concerne un procédé pour isoler à partir d'un polymère comprenant des unités répétitives possédant chacune la formule X, (formule X) dans laquelle Y est P ou N, Ar1 et Ar2 sont des groupes aromatiques bivalents, Ar3 est un groupe aromatique monovalent et les unités de formule (X) peuvent être identiques ou différents, un fraction à poids moléculaire qui convient tout particulièrement comme une substance de transport de charges.