POLYISOCYANATE COMPOSITION AND TWO-PACKAGE TYPE COATING COMPOSITION USING THE SAME

摘要

Disclosed is a polyisocyanate composition containing a polyisocyanate, which is obtained by reacting hexamethylene diisocyanate and an aliphatic monoalcohol having 11-20 carbon atoms, and a low-polarity organic solvent having an aniline point of 10-70°C or a low-polarity organic solvent having a mixed aniline point of 5-50°C. The polyisocyanate contains an allophanate group, an isocyanurate group and a urethane group in a molecule, and the molar ratio between the allophanate group and the isocyanurate group, namely allophanate group/isocyanurate group, is from 70/30 to 30/70. The composition is soluble in a low-polarity organic solvent, and has excellent compatibility with a polyol compound. Consequently, the composition can provide a coating film having excellent physical properties such as surface hardness.