Patent ID: 8148488
Filing Date: 2012-04-03
Classification: C08G,C09D

Abstract:
1. A polyisocyanate composition which is represented by the following structural formula (I) and satisfies all of the following requirements: i) the diisocyanate monomer concentration in the polyisocyanate composition is not more than 3 mass %, ii) the polyol component concentration in the polyisocyanate composition is 3-30 mass %, and iii) the glass transition temperature is −50° C. to 0° C.; (in the formula, R is a residue excluding isocyanate group in the polyisocyanate composition derived from hexamethylene diisocyanate, isophorone diisocyanate and a polyol selected from the group consisting of trimethylolpropane and the diisocyanate and the polyol are bonded through an allophanate bond in at least a part of bonding portions of the diisocyanate and the polyol, the ratio of aliphatic diisocyanate component/alicyclic diisocyanate component is 95/5-50/50 (by mass ratio), and n (a statistical average number of isocyanate group in one molecule of the polyisocyanate) is 4.5-20).