Patent ID: 8889780
Filing Date: 2014-11-18
Classification: C08G,C08L,C09D

Abstract:
1. A two-component polyurethane coating composition, comprising as synthesis components: (A) at least one polyisocyanate obtained by a process comprising reacting at least one monomeric isocyanate; (B) at least one hydroxyl-containing poly(meth)acrylate polyol; and (C) at least one non-crosslinked hyperbranched polyester polyol, wherein the non-crosslinked hyperbranched polyester polyol (C) is obtained by either: (i) a process comprising polycondensing said process (i) occurring in the absence of a diol B (ii) a process comprising polycondensing said process (ii) occurring in the absence of a dicarboxylic acid A wherein: x independently represents an integer greater than or equal to 3, and corresponds to a number of carboxyl groups represented by A; y independently represents an integer greater than or equal to 3, and corresponds to a number of hydroxyl groups represented by B; the non-crosslinked hyperbranched polyester polyol (C) has an acid number of 5 to 100 mg KOH/g; and the poly(meth)acrylate polyol (B) has a molecular weight M