Heat-resistant silicone-polyurethane and a process for its synthesis

A new type heat-resistant silicone-polyurethane, which contains polysiloxane chain units of the general formula (II) with diisocyanato end groups and with polyurethane bonds in the chain €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ -OCN-Z-NH-CO-O-X-O-CO-(NH-Z-NH-CO-O-X-O-) m -CO-NH-Z-NCO-€ƒ€ƒ€ƒ€ƒ€ƒ(II) - wherein X is the molec...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: BERECZK, GABOR, NAGY, JOZSEF, WAGNER, OEDOEN, KWAYSSER, ENDRE
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A new type heat-resistant silicone-polyurethane, which contains polysiloxane chain units of the general formula (II) with diisocyanato end groups and with polyurethane bonds in the chain €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ -OCN-Z-NH-CO-O-X-O-CO-(NH-Z-NH-CO-O-X-O-) m -CO-NH-Z-NCO-€ƒ€ƒ€ƒ€ƒ€ƒ(II) - wherein X is the molecular fragment containing the siloxane chain, Z is the molecular fragment containing the alkyl chain, m is an integer between 1 and 20 - and/or polysiloxane chain units of the general formula (IV) with diisocyanato end groups and with polyurethane bonds in the chain €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ -OCN-X-NH-CO-O-Z-O-CO-(NH-X-NH-CO-O-Z-O-) m -CO-NH-X-NCO-€ƒ€ƒ€ƒ€ƒ€ƒ(IV) - wherein X is the molecular fragment containing the siloxane chain, Z is the molecular fragment containing the alkyl chain, m is an integer between 1 and 20 - as crossed-linked polymer units and a process for the synthesis of thereof.