| abstract |
PROBLEM TO BE SOLVED: To provide an excellent balance of physical properties such as mechanical strength, heat resistance, hydrolysis resistance, cold resistance, weather resistance, etc., and to provide films, hoses, tubes, adhesives and mechanical parts, and automobiles. An object of the present invention is to provide a method for efficiently producing a polyurethane resin suitable for various molded products such as parts. SOLUTION: The present invention relates to a polycarbonate diol having a hydroxyl group at both ends of a main chain and having a long alkyl side chain and having a carbon number of 36 obtained by a transesterification reaction between a dimer diol and a carbonate compound, an organic diisocyanate (cured ) And a low molecular weight compound (chain extender) having at least two hydrogen atoms that react with the isocyanate group in the presence or absence of an organic solvent inert to the isocyanate group. And a method for producing a polyurethane resin. |