Ultrafine sheath-core composite fibers and composite sheets...

Details Ultrafine sheath-core composite fibers and composite sheets... Ultrafine sheath-core composite fibers and composite sheets...

D - Textiles, Paper

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D02G 3/00 (2006.01) D01F 8/14 (2006.01) D04H 1/42 (2006.01) D06N 3/00 (2006.01)

Patent

CA 1174039

ABSTRACT OF DISCLOSURE Improved ultrafine sheath-core composite fibers and composite sheets composed of these fibers are disclosed. The composite fibers have a fineness of 0.0001 to 0.5 denier and comprises 10 to 70 % of the core having a very high intrinsic viscosity within a specific range and being located at the center of the sheath ant 90 to 30 % of the sheath composed of a polyester copolymerized 1.5 to 8 mole %, based on the total acid component, of 5-sodium(or lithium or potassium) sulfoisophthalte and having a thickness of 0.04 to 2 microns. The composite fibers have a high strength and are dyeable with a cationic dye. When the composite fibers are combined with a elastic material such as polyurethane, suede-like artificial leathers having excellent softness, touch, feel and colour can be obtained.

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