| abstract |
A polymer having excellent solvent resistance can be produced by using a polycarbonate diol having a repeating unit represented by the formula (1) and/or (2), having a hydroxy group at both termini, and having a number average molecular weight of 300 to 50,000. [wherein R1 represent a linear or branched hydrocarbon group having 2 to 50 carbon atoms; and n represents an integer of 2 to 50.] [wherein R2 represents a linear or branched hydrocarbon group having 10 to 50 carbon atom.] |