Patent ID: 7479520
Filing Date: 2009-01-20
Classification: C08F,C08G,C09D

Abstract:
1. An aqueous coating material that is substantially or completely free from volatile organic compounds comprising a mixture of: (A) from 50 to 95% by weight of at least one aqueous primary dispersion comprising a polymer having a diameter ≦500 nm comprising a controlled free-radical microemulsion or miniemulsion polymerization product of at least one olefinically unsaturated monomer in the presence of at least one hydrophobic additive, wherein the polymer is at least one of a dispersed solid polymer particle, an emulsified solid polymer particle, a dispersed liquid polymer particle, an emulsified liquid polymer particle, and a dispersed solid core-shell particle, and (B) from 5 to 50% by weight of at least one secondary aqueous polyurethane dispersion comprising at least one polyurethane and at least one light stabilizer that is at least one of a regenerable free-radical scavenger, all percents by weight based on the aqueous coating material.