公开(公告)号：US11873606B2

公开(公告)日：2024-01-16

申请号：US17298124

申请日：2019-12-10

Applicant: KURARAY CO., LTD.

Inventor： Hiroyuki Hattori ,  Yasuhiro Katou ,  Kazuyuki Suetoshi ,  Rei Nagayama

IPC: D06N3/14 ,  D06N3/00

CPC classification number: D06N3/0075 ,  D06N3/0011 ,  D06N3/0077 ,  D06N3/14 ,  D06N2201/0209 ,  D06N2205/023 ,  D06N2209/0823 ,  D06N2211/106 ,  D06N2211/14 ,  D06N2211/263 ,  D06N2211/28

Abstract: Disclosed is a napped artificial leather napped including: a non-woven fabric that is an entangle body of ultrafine fibers; and an elastic polymer impregnated into the non-woven fabric, the napped artificial leather having, at least on one side thereof, a napped surface formed by napping the ultrafine fibers, wherein the ultrafine fibers contain 0.5 mass % or more of a pigment (A), the elastic polymer contains 0 to 0.01 mass % of a pigment (B), and the ultrafine fibers and the elastic polymer are undyed; the napped surface has a lightness L* value of 25 or less in a color coordinate space (L*a*b* color space); and a ratio of an area occupied by the elastic polymer, observed on the napped surface, to a total area of an area occupied by the ultrafine fibers and the area occupied by the elastic polymer is 0.5% or less.