Patent Number: 9,970,129

Title: Conjugated fiber, base body for artificial leather, and artificial leather

Abstract: The present invention provides a conjugated fiber suitable for use as a crimped fiber capable of producing an artificial leather having highly dense texture and good quality. The present invention also provides a base body for an artificial leather and an artificial leather produced by using such conjugated fiber. The conjugated fiber of the present invention includes a conjugated fiber comprising a readily soluble polyester component and a less readily soluble component, and the readily soluble polyester component comprises a copolymerized polyester having 5 to 10% by mole of 5-sodium sulfoisophthalate copolymerized therewith and the readily soluble polyester component contains a polyalkylene glycol. The polyalkylene glycol is in the form of streaks extending in longitudinal direction of the fiber in the longitudinal cross section of the conjugated fiber.

Inventors: Nishimura; Hajime (Otsu, JP), Matsuzaki; Yukihiro (Gifu, JP), Nishimura; Makoto (Otsu, JP)

Assignee: TORAY INDUSTRIES, INC.

International Classification: D02G 3/00 (20060101); D06N 3/12 (20060101); D06N 3/00 (20060101); D06N 3/14 (20060101); D01D 5/08 (20060101); D01F 8/14 (20060101); D04H 1/435 (20120101); D04H 1/4382 (20120101)

Expiration Date: 2022-05-15 0:00:00