Title:
ARTIFICIAL LEATHER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2024/095846
Kind Code:
A1
Abstract:
Artificial leather including, as constituent elements, a fibrous base material configured from fine polyester fibers having an average single-fiber diameter of 0.1-10.0 μm, and polyurethane that has a hydrophilic group, wherein the content ratio of the polyurethane having a hydrophilic group in the artificial leather is 15-25 mass%, the mass holding ratio of the polyurethane having a hydrophilic group after the artificial leather is immersed for 24 hours in 25°C N,N-dimethyl formamide is 50-80 mass%, and the weight-average molecular weight of a component dissolved in 25°C N,N-dimethyl formamide after the artificial leather is immersed for 24 hours in the 25°C N,N-dimethyl formamide is 50,000-100,000. Provided are artificial leather and a method for manufacturing the same, with which both soft texture and exceptional durability are achieved while using an environmentally conscious process in which no organic solvents are used.
Inventors:
KIMURA SHUNICHI (JP)
YAMASHINA MAKOTO (JP)
YANAGISAWA SATOSHI (JP)
YAMASHINA MAKOTO (JP)
YANAGISAWA SATOSHI (JP)
Application Number:
PCT/JP2023/038438
Publication Date:
May 10, 2024
Filing Date:
October 25, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D06N3/14
Domestic Patent References:
| WO2016063761A1 | 2016-04-28 |
Foreign References:
| JP2022101943A | 2022-07-07 | |||
| JP2014019983A | 2014-02-03 | |||
| JP2017172074A | 2017-09-28 | |||
| JP2005054345A | 2005-03-03 | |||
| JP2000303371A | 2000-10-31 | |||
| JPH1192656A | 1999-04-06 | |||
| JP2021021172A | 2021-02-18 | |||
| JP2000355885A | 2000-12-26 |
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