3GT/4GT biocomponent fiber and preparation thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorJing C. Chang
Life of this patent
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Abstract
Disclosed are side-by-side or eccentric sheath-core bicomponent fibers comprising a poly(trimethylene terephthalate) component and a poly(tetramethylene terephthalate) component and preparation and use thereof.
Claims8
A side-by-side or eccentric sheath-core bicomponent fiber comprising a poly(trimethylene terephthalate) component having an intrinsic viscosity in a range of from about 0.80 dl/g to about 1.20 dl/g and a poly(tetramethylene terephthalate) component having an intrinsic viscosity in a range of from about 0.98 dl/g to about 1.24 dl/g, said fiber having an intrinsic viscosity in a range of from about 0.79 dl/g to about 1.09 dl/g, a tenacity of about 4.4 g/d, and an elongation of about 21%.
Dependencies are inferred from the claim text.