Abstract: In at least one embodiment, the present invention relates to a method and system of painting an article having two or more base coats, and to articles prepared in accordance therewith. In at least one embodiment, the method comprises applying a primer composition to a first and second area of the article; applying a first base composition to the first area of the article; curing the primer composition and the first base composition to form a primer and a first base coat; masking at least a portion of the first base coat; applying a second base composition to the second area of the article; removing the masking; applying a clear coat composition to the first and second area of the article; and curing the second base and the clear coat compositions. In at least one embodiment, the article is a vehicle and the compositions are applied via automated spray equipment.

Abstract: In at least one embodiment, the present invention relates to a method and system of painting an article having two or more base coats, and to articles prepared in accordance therewith. In at least one embodiment, the method comprises applying a primer composition to a first and second area of the article; applying a first base composition to the first area of the article; curing the primer composition and the first base composition to form a primer and a first base coat; masking at least a portion of the first base coat; applying a second base composition to the second area of the article; removing the masking; applying a clear coat composition to the first and second area of the article; and curing the second base and the clear coat compositions. In at least one embodiment, the article is a vehicle and the compositions are applied via automated spray equipment.

Abstract: The detrimental effects of fluctuating humidity are neutralized by adjusting the viscosity of a waterborne coating as it is being conducted to the spraying device. A predetermined amount of water or other viscosity modifying additive is mixed continuously with the coating in the coating supply line immediately upstream from the spray device. The amount of water or other additive to be added may be determined by monitoring the humidity in the spray zone. Preferably, an automated feedback control system is employed to adjust the amount of water or other viscosity altering additive being mixed into the coating stream.

Abstract: The detrimental effects of fluctuating humidity are neutralized by adjusting the viscosity of a waterborne coating as it is being conducted to the spraying device. A predetermined amount of water or other viscosity modifying additive is mixed continuously with the coating in the coating supply line immediately upstream from the spray device. The amount of water or other additive to be added may be determined by monitoring the humidity in the spray zone. Preferably, an automated feedback control system is employed to adjust the amount of water or other viscosity altering additive being mixed into the coating stream.

Abstract: Aqueous dispersions of urethane polymers and vinyl polymers (e.g., acrylics) are disclosed that provide water-based coating compositions with good adhesion following humidity exposure. The dispersion is predominately urethane, and the polyurethane is made from a first and a second polyisocyanate, the first polyisocyanate having at least one open carbon chain greater than six carbon atoms in length between two isocyanate groups, preferably at least eight carbon atoms in length. The vinyl monomers are polymerized in the presence of the aqueously dispersed polyurethane.

Abstract: Aqueous dispersions of urethane polymers are disclosed that provide water-based coating compositions with good adhesion following humidity exposure. The polyurethane is made from a first and a second polyisocyanate, the first polyisocyanate having at least one open carbon chain greater than six carbon atoms in length between two isocyanate groups, preferably at least eight carbon atoms in length. The dispersion is particularly useful as a binder resin in coating compositions having pigments that normally have a detrimental effect on adhesion.