EP 4321679 A2 20240214 - ARTIFICIAL LEATHER
Title (en)
ARTIFICIAL LEATHER
Title (de)
KUNSTLEDER
Title (fr)
CUIR ARTIFICIEL
Publication
Application
Priority
JP 2022129024 A 20220812
Abstract (en)
Provided is artificial leather which does not use organic solvents during the production process and thus has a low environmental impact, and which has no formation of wrinkles during three-dimensional molding. 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-dispersible 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 55% to 75%.
IPC 8 full level
D06P 3/14 (2006.01)
CPC (source: EP)
D06N 3/0004 (2013.01); D06N 3/0006 (2013.01); D06N 3/0011 (2013.01); D06N 3/0036 (2013.01); D06N 3/0052 (2013.01); D06N 3/0065 (2013.01); D06N 3/0072 (2013.01); D06N 3/0075 (2013.01); D06N 3/0088 (2013.01); D06N 3/146 (2013.01); D06N 2205/246 (2013.01); D06N 2209/0807 (2013.01); D06N 2211/28 (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 4321679 A2 20240214; EP 4321679 A3 20240619; JP 2024025723 A 20240226
DOCDB simple family (application)
EP 23190590 A 20230809; JP 2023129216 A 20230808