| abstract |
(57) [Abstract] [Purpose] To provide a polyurethane, an artificial leather, and a synthetic leather which are excellent in sliminess and texture and are suitable for wet artificial leather and synthetic leather. [Structure] A polymer diol (A) having a number average molecular weight of 500 to 3,000, an organic diisocyanate (B 1 ) and a low molecular chain extender (D) have an NCO / OH equivalent ratio of 0. The intermediate diol (C) having an OH at the terminal obtained by reacting in a quantitative relationship such that it is 5 to 0.99, diphenylmethane-4,4′-diisocyanate (B 2 ) and an average molecular weight of 5,000 or more. A method for producing a sheet-like material, which comprises impregnating and / or coating a fiber base material with a polyurethane solution characterized by reacting with polyethylene glycol (E) and coagulating with a non-solvent. |