Base body for artificial leather
AssigneeToray Industries, Inc.
InventorsHajime Nishimura, Yukihiro Matsuzaki, Makato Nishimura
Life of this patent
Estimating the term…
Abstract
A base body for an artificial leather includes an intertwined fiber body mainly including an ultrafine fiber having a 0.01 to 10 μm fiber diameter and an elastic polymer, the ultrafine fiber including, as a constituent polymer, a polyester obtained from a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component.
Claims6
A base body for a napped artificial leather consisting of a nonwoven fabric prepared by intertwining an ultrafine fiber layer consisting of an ultrafine fiber having a 0.01 to 5 μm fiber diameter and 5 to 100% by mass of an elastic polymer impregnated into the nonwoven fabric, the ultrafine fiber comprising polyester as a constituent component, the polyester comprising a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol as copolymerization components, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component, wherein the ultrafine fiber is dispersed on a surface of the base body and one surface of the base body is subjected to a napping treatment, and wherein the napped artificial leather has a product abrasion level determined by a Martin Dale Abrasion Evaluation of four or more.
A napped artificial leather consisting of a base body consisting of a nonwoven fabric prepared by intertwining an ultrafine fiber layer consisting of an ultrafine fiber having a 0.01 to 5 μm fiber diameter and 5 to 100% by mass of an elastic polymer impregnated into the nonwoven fabric, the ultrafine fiber comprising polyester as a constituent component, the polyester comprising a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol as copolymerization components, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component, wherein the ultrafine fiber is dispersed on a surface of the base body and one surface of the base body is subjected to a napping treatment, and wherein the napped artificial leather has a product abrasion level determined by a Martin Dale Abrasion Evaluation of four or more.
Dependencies are inferred from the claim text.