Patent ID: 8952120
Filing Date: 2015-02-10
Classification: C08G,C09D

Abstract:
1. A polyisocyanate composition obtained by isocyanurate forming reaction, which is derived from an aliphatic diisocyanate monomer and 2-ethylhexanol and satisfies all of the following requirements when the composition contains substantially no aliphatic diisocyanate monomer and substantially no solvent: 1) a viscosity at 25° C. is 800 to 1500 mPa·s, 2) the concentration of isocyanurate timer is from 63 to 75 mass % in the polyisocyanate composition, 3) an allophanate bond number, a=(A/(A+B))×100, is 1-4%, wherein A is an allophanate bond number in the polyisocyanate composition, and B is an isocyanurate bond number in the polyisocyanate composition, and 4) a urethodione bond number, d=(D/(B+D))×100, is less than 2%, wherein D is a urethodione number in the polyisocyanate composition, and 5) an isocyanate group concentration in the polyisocyanate composition is 22 to 25 mass %.