Method for producing polycarbonate diol, polycarbonate diol and polyurethane using same

A method for producing a polycarbonate diol, comprising:

• subjecting a compound of formula (A), a compound of formula (B), and a carbonate compound to polycondensation by a transesterification reaction in the presence of a catalyst to produce a polycarbonate diol having a number average molecular weight of 250 to 5,000:
• HO—(CH2)10—OH (A)
• HO—R1—OH (B)
• wherein R1 represents a substituted or unsubstituted divalent alkylene group having a carbon number of 3 to 20,
• wherein
• the compound of the formula (A) is not included by the formula (B),
• the compound of formula (A) comprises from 0.01 to 1.0 wt % of an aldehyde derivative based on the weight of compound (A), and
• a mol content of carbonate compound derived terminal groups to a total number of terminal groups of the polycarbonate diol is 10 mol % or less.