POLYCARBONATE DIOL AND METHOD FOR PRODUCING THE SAME AS WELL AS POLYURETHANE USING POLYCARBONATE DIOL

摘要

PROBLEM TO BE SOLVED: To provide a polycarbonate diol having an ether bond and a branched structure which exhibits physical properties such as flexibility and low-temperature characteristics with satisfactory balance when formed into a polyurethane.;SOLUTION: There is provided a polycarbonate diol containing 5 to 50 mol% of a repeating unit represented by the following formula (1): (wherein, R¹ and R² each independently is a divalent branched group having 1 to 15 carbon atoms and may contain a hetero atom in the range of the number of carbon atoms; and n is an integer of 1 or more.);COPYRIGHT: (C)2014,JPO&INPIT