| 摘要 |
<p>An allophanate group-containing polyisocyanate composition which is obtained from an aliphatic diisocyanate and which, when neither any solvent nor the aliphatic diisocyanate is substantially contained therein, satisfies the following: the content of components having a molecular weight not higher than 700 is 20 to 60 wt.%; the ratio of the weight-average molecular weight to the number-average molecular weight is from 1.20 to 5.00; and the ratio of the viscosity of the polyisocyanate composition at 25°C (unit, mPa·s) to the number-average number of functional isocyanate groups is represented by the following relationship. [Viscosity (mPa·s)/(number-average functional group number)]≤240</p> |
