Global Patent Index - EP 4324979 A2

EP 4324979 A2 20240221 - ARTIFICIAL LEATHER

Title (en)

ARTIFICIAL LEATHER

Title (de)

KUNSTLEDER

Title (fr)

CUIR ARTIFICIEL

Publication

EP 4324979 A2 20240221 (EN)

Application

EP 23190797 A 20230810

Priority

JP 2022129075 A 20220812

Abstract (en)

Provided is artificial leather which has excellent clarity of emboss patterns, and which does not use organic solvents during the production process and thus has a low environmental impact. The artificial leather comprises a nonwoven fabric made of ultrafine fibers having a mean single fiber diameter of 0.3 µm to 7 µm, and water-dispersed polyurethane, wherein when the free induction decay (FID) signal in pulse NMR (solid echo method, proton observation, measuring temperature: 50°C) is fitted to two components: the S component (Gaussian component) and L component (Lorentz component), the spin-spin relaxation time Tl of the L component is 500 µsec to 800 µsec and the L component fraction Cl is 25% or greater and less than 55%.

IPC 8 full level

D06N 3/14 (2006.01)

CPC (source: EP)

D06N 3/0004 (2013.01); D06N 3/0006 (2013.01); D06N 3/0011 (2013.01); D06N 3/04 (2013.01); D06N 3/14 (2013.01); D06N 3/146 (2013.01); D06N 3/18 (2013.01); D06N 3/183 (2013.01); D06N 3/186 (2013.01)

Citation (applicant)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4324979 A2 20240221; JP 2024025722 A 20240226

DOCDB simple family (application)

EP 23190797 A 20230810; JP 2023129184 A 20230808