US 12,258,705 B2
Non-solvent 2K polyurethane artificial leather composition, artificial leather prepared with same and preparation method thereof
Chao Zhang, Shanghai (CN); Yanli Feng, Shanghai (CN); and Shihao Qin, Shanghai (CN)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/597,742
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Sep. 25, 2019, PCT No. PCT/CN2019/107672
§ 371(c)(1), (2) Date Jan. 21, 2022,
PCT Pub. No. WO2021/056229, PCT Pub. Date Apr. 1, 2021.
Prior Publication US 2022/0259798 A1, Aug. 18, 2022
Int. Cl. D06N 3/14 (2006.01); D06N 3/00 (2006.01)
CPC D06N 3/147 (2013.01) [D06N 3/0043 (2013.01); D06N 2211/28 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A non-solvent two-component polyurethane artificial leather composition, comprising
(A) a polyurethane-prepolymer component, comprising one or more polyurethane-prepolymers prepared by reacting at least one polyisocyanate compound with at least one first polyol, wherein the polyurethane-prepolymer comprises at least two free isocyanate groups, the polyurethane-prepolymer having a NCO content of 10 to 20 wt % and a viscosity of 50 to 10,000 cSt; and
(B) a polyol component, comprising at least one second polyol;
wherein the polyol component further comprises an encapsulated foaming agent comprising at least one foaming core phase encapsulated within an outer shell.