| 摘要 |
A copolycarbonate diol comprising: (a) recurring units each represented by the following formula (1): <CHEM> (b) recurring units each independently represented by the following formula (2): <CHEM> wherein n is 4, 5 or 6; and (c) terminal hydroxyl groups, wherein the copolycarbonate diol has a number average molecular weight of from 300 to 20,000, and wherein the amount of the recurring units (a) is from 10 to 90 % by mole, based on the total molar amount of the recurring units (a) and (b). A thermoplastic polyurethane obtained by copolymerizing the above-mentioned copolycarbonate diol with a polyisocyanate. |
