METHOD OF MAKING BRANCHED POLYPHOSPHONATES

METHOD OF MAKING BRANCHED POLYPHOSPHONATES

Disclosed are branched polyphosphonates produced using a polycondensation process, that result in polyphosphonates having Tg of at least 100°C, and which can be further processed to have improved hydro lytic stability compared to other polyphosphonates. The method and polyphosphonate compositions ma...

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Bibliographische Detailangaben
Hauptverfasser: VINCIGUERRA, MICHAEL, RICE, NORMAN, LUSIGNEA, RICHARD, FREITAG, DIETER
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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:Disclosed are branched polyphosphonates produced using a polycondensation process, that result in polyphosphonates having Tg of at least 100°C, and which can be further processed to have improved hydro lytic stability compared to other polyphosphonates. The method and polyphosphonate compositions may be made from readily available starting materials providing lower cost fire retardant materials. Also disclosed are polymer compositions that comprise these branched polyphosphonates and at least one other polymer, wherein the resulting polymer compositions exhibit flame retardant properties.