| abstract |
The present invention provides a thermoplastic polyurethane obtained by reacting organic diisocyanate (A), polymer polyol (B) having a number average molecular weight (Mn) of 1000-5000 and chain extender (C), wherein the chain extender (C) contains a straight chain diol (c-1) and a side chain alkyl group-containing diol (c-2), a molar ratio of the straight chain diol (c-1) and the side chain alkyl group-containing diol (c-2) (straight chain diol (c-1)/side chain alkyl group-containing diol (c-2)) in the chain extender (C) is 97/3-60/40, and a nitrogen atom content is not less than 1.5 mass % and less than 4.0 mass %. |