PRODUCTION OF POLYAMIDE FIBER

PURPOSE:To obtain a modified cross-section yarn having large deviation from roundness or a hollow yarn having high hollowness from a polymer having low viscosity without extremely lowering the spinning temperature, by using a polyamide containing a specific amount of a secondary amine in the molecul...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAHARA YUKIO, YARINO TATSUO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a modified cross-section yarn having large deviation from roundness or a hollow yarn having high hollowness from a polymer having low viscosity without extremely lowering the spinning temperature, by using a polyamide containing a specific amount of a secondary amine in the molecule. CONSTITUTION:In the spinning of a modified cross-section or hollow polyamide yarn, a polyamide containing 20-100meq/kg of a secondary amine in the molecule is used as the polymer. The introduction of the secondary amine in the polyamide molecule can be carried out e.g. by adding a polyamine having primary amines at both terminal and represented by formula H2N[(CH2)eNH (CH2)mNH]nH (e and m are 2-12; n is 1-10) to a reaction system prior to he completion of the polycondensation of polyamide.