Patent ID: 8680205

Claim:
A method for improving flow of a two-component urethane system by adding a hydroxy-functional acrylic polymer having M n from 5,000 to 70,000 and from 10 to 50 mole % polymerized residues of a C 2 -C 8 hydroxyalkyl (meth)acrylate; in which the urethane system comprises: (a) a hydroxy-terminated polyester polyol; and (b) an isocyanate-terminated prepolymer comprising polymerized residues of: (i) at least one of diphenyl methane diisocyanate and toluene diisocyanate, and (ii) a glycol or polyol; and wherein the urethane system contains from 0.1 to 3 wt % of the hydroxy-functional acrylic polymer.