Artificial leather base material, and method for producing artificial leather base material

EP4663845A1Pending Publication Date: 2025-12-17KURARAY CO LTD
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Patent Information

Application Number
EP2024753360
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-02-08
Filing Date
2024-02-06
Publication Date
2025-12-17

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Abstract

Provided is an artificial leather base material containing a polyamide fiber and having excellent shape stability when wetted with water, the artificial leather base material contains a polyamide fiber and an elastic polymer, in which the artificial leather base material has an equilibrium moisture regain of 1.80% or less as calculated by the following Equation (1), where A is the mass of the artificial leather base material after 40 seconds from being transferred to an atmosphere having a temperature of 22°C and a relative humidity of 45% after the artificial leather base material has been dried at 100°C for 10 minutes, B is the mass of the artificial leather base material after the artificial leather base material is further left to stand in the above atmosphere and there is no mass change, and X% by mass is the percentage of the mass of the elastic polymer to the total mass of the polyamide fiber and the elastic polymer: Equilibriummoistureregain%=B−A / A×100−X / 100×100
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Citation Information

Patent Citations

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    JP2006002288A

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    JP2008308784A

  • Leather-like sheet and method of producing leather-like sheet

    JP2014065979A

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    JP2023017646A