Process for producing aromatic polyamides from amidine derivatives of polyamide forming reactants

Process for producing aromatic polyamides from amidine derivatives of polyamide forming reactants

Polyamides, particularly aromatic polyamides and mixed aromatic-aliphatic polyamides, are produced by heating various amidines or amidine derivatives to yield polymer and a volatile low molecular weight amide, such as formamide. The thermally polymerizable composition is an aromatic amidine or salt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SPIEWAK, JOHN W
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
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:Polyamides, particularly aromatic polyamides and mixed aromatic-aliphatic polyamides, are produced by heating various amidines or amidine derivatives to yield polymer and a volatile low molecular weight amide, such as formamide. The thermally polymerizable composition is an aromatic amidine or salt thereof, e.g. N,N-1,4-phenylene bis-(N',N'-dimethylformamidinium) terephthalate which is heat polymerizable to poly-(p-phenylene terephthalamide); or N-(p-carboxyphenyl)-N',N'-dimethyl formamidine hydrochloride which is heat polymerizable to poly-(p-benzamide).