COMPOSITE POLYESTER TEXTILE FIBERS
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Abstract
HELICALLY CRIMPABLE AND CRIMPED BICOMPONENT FILAMENTS COMPRISING A LATERALLY ECCENTRIC ASSEMBLY OF AT LEAST TWO A PARTLY CRYSTALLINE POLYESTER IN WHICH THE CHEMICAL REPEATUNITS OF ITS CRYSTALLINE REGION ARE IN A NON-EXTENDED STABLE CONFORMATION THAT DOES NOT EXCEED NINETY PERCENT OF THE LENGTH OF THE CONFORMATION OF ITS FULLY EXTENDED CHEMICAL REPEAT-UNITS AND IS GENERALLY ON THE INSIDE OF THE CRIMP HELICES FORMED WHEN THE ASSEMBLY CRIMPS, WHILE AT LEAST ONE OTHER POLYESTER COMPONENT IS PARTLY CRYSTALLINE AND THE CHEMICAL REPEAT-UNITS OF THE CRYSTALLINE REGION MORE CLOSELY APPROACH THE LENGTH OF THE CONFORMATION OF ITS FULLY EXTENDED CHEMICAL REPEAT-UNITS. YARNS, FABRICS, AND THE LIKE PRODUCED FROM THESE FILAMENTS HAVE A WIDE RANGE OF END USES.
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