EP 4324979 A2 20240221 - ARTIFICIAL LEATHER
Title (en)
ARTIFICIAL LEATHER
Title (de)
KUNSTLEDER
Title (fr)
CUIR ARTIFICIEL
Publication
Application
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)
DOCDB simple family (application)
EP 23190797 A 20230810; JP 2023129184 A 20230808