PROPYLENE-BASED COPOLYMERS, A METHOD OF MAKING THE FIBERS AND ARTICLES MADE FROM THE FIBERS

Fibers that exhibit good elasticity or extensibility and tenacity, and low modulus are prepared from propylene-based copolymers. The propylene-based copolymers comprise at least about 50 weight percent (wt %) of units derived from propylene and at least about 8 wt % of units derived from one or more...

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Bibliographische Detailangaben
Hauptverfasser:	LIU, LIZHI, PENG, HONG, VAN DUN, JOSEF, J.I, DAY, BYRON, P, ENGLEBERT, STEPHEN, M, RICHARD, RENETTE E, PATEL, RAJEN, M, SHARMA, VARUNESH, CHANG, ANDY C, PEPPER, RANDY, E, KNICKERBOCKER, EDWARD, N, DOUFAS, ANTONIOS, K, SANDERS, CHRISTIAN, L, JORDAN, JOY, F
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BRAIDING CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS COTTON-WOOL CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MECHANICAL FINISHING OF YARNS OR ROPES NATURAL OR ARTIFICIAL THREADS OR FIBRES NON-WOVEN FABRICS SPINNING TEXTILES TRIMMINGS WADDING WARPING OR BEAMING YARNS YARNS OR THREADS
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Beschreibung
Zusammenfassung:	Fibers that exhibit good elasticity or extensibility and tenacity, and low modulus are prepared from propylene-based copolymers. The propylene-based copolymers comprise at least about 50 weight percent (wt %) of units derived from propylene and at least about 8 wt % of units derived from one or more comonomers other than propylene, e.g., ethylene. Particularly preferred propylene copolymers are characterized as having 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In one aspect of the invention, fibers are subjected to stress-induced crystallization by subjecting the fiber to tensile elongation during draw.