Patent ID: 7807753
Filing Date: 2010-10-05
Classification: C08G,C09D,Y10T

Abstract:
1. A coating composition, consisting essentially of an acrylic resin (A), a polylactonepolyol (B), and a polyisocyanate prepolymer (C) in the range where the solid content ratio of the acrylic resin (A) to the polylactonepolyol (B) is (A)/(B)=60/40 to less than 100/0 (mass ratio), wherein: the acrylic resin (A) is a resin having a short side chain hydroxyl group (a1) which is a group derived from hydroxyethyl (meth)acrylate and a long side chain hydroxyl group (a2) which is a group derived from an adduct of hydroxyethyl (meth)acrylate and ε-caprolactone, wherein the mutual ratio of the short side chain hydroxyl group (a1) to the long side chain hydroxyl group (a2) is (a1)/(a2)=3/1 to 1/3 (mole ratio) and wherein the total hydroxyl value of the short side chain hydroxyl group (a1) and the long side chain hydroxyl group (a2) is in the range of 100 to 200; and the polyisocyanate prepolymer (C) is combined so that the ratio of the amount of the isocyanate group (c) of the polyisocyanate prepolymer (C) to the total amount of hydroxyl groups of the acrylic resin (A) and the polylactonepolyol (B) (a+b) is (c)/(a+b)=1/0.3 to 1/2.0 (mole ratio).