PROCESS FOR THE PREPARATION OF POLY(TETRAMETHYLENE-ADIPAMIDE)

Process for the preparation of polyamides from 1,4-diaminobutane and adipic acid, wherein a 40 to 70% strength aqueous solution of the monomers is heated at 280 DEG -320 DEG C., preferably 290 DEG -310 DEG C., for a period of 5 to 30 minutes under a pressure of less than 8 bar, to give a precondensa...

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Bibliographische Detailangaben
Hauptverfasser:	NIELINGER, WERNER, FULLMANN, HEINZ-JOSEF, BRINKMEYER, HERMANN, BINSACK, RUDOLF, BOTTENBRUCH, LUDWIG
Format:	Patent
Sprache:	eng ; ger
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:	Process for the preparation of polyamides from 1,4-diaminobutane and adipic acid, wherein a 40 to 70% strength aqueous solution of the monomers is heated at 280 DEG -320 DEG C., preferably 290 DEG -310 DEG C., for a period of 5 to 30 minutes under a pressure of less than 8 bar, to give a precondensate having a relative viscosity of 1.05 to 2.0, and solid phase after-condensation at 180 DEG -260 DEG C.