Perdeuterated polyiimides, their process of preparation and their use as materials which are transparent within the region from 2500 to 3500cm-1

Perdeuterated polyiimides, their process of preparation and their use as materials which are transparent within the region from 2500 to 3500cm-1

The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following fo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ANSELMI ELSA, CALONNE MARC, RABY JACQUES, BALLAND-LONGEAU ALEXIA
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
COMPOSITIONS BASED THEREON
HETEROCYCLIC COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z- (II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from -O-C6D4-, -CO-C6D4- and -C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm-1, for example in laser devices.