Patent ID: 8686107
Filing Date: 2014-04-01
Classification: C08G,C09D

Abstract:
1. A polycarbonate diol comprising repeating units represented by the following formula (A) and a terminal hydroxyl group, wherein: from 90 to 100 mol % of the repeating units represented by the formula (A) are repeating units represented by the following formula (B) or (C); the amount of the repeating units represented by the formula (B) is from 60 to 95 mol % based on the total amount of the repeating units represented by the formula (A); the polycarbonate diol includes primary and secondary terminal OH groups and has a primary terminal OH ratio of from 96.4% to 99.5%; and the sum of the primary terminal OH ratio and the secondary terminal OH ratio of the polycarbonate diol is 98.5% or higher and 99.9% or lower; wherein formula (A) is in which R represents a divalent aliphatic or alicyclic hydrocarbon having 2 to 12 carbon atoms, formula (B) is and formula (C) is