Patent ID: 7217442

Claim:
A method of applying a multi-component coating composition to a substrate with a spray applicator in which each component is delivered to and mixed in a mixing chamber within the spray applicator to form a coating mixture that is discharged from the spray applicator to form a coating on the substrate wherein one of the components is a polymeric material having functional groups and another component is a crosslinking agent containing functional groups capable of reacting with the functional groups of the polymeric material; the method further comprising selecting and/or adjusting the rheological profile of the polymeric material and/or the crosslinking agent by adding one or more materials having functional groups that are different from and compatible with the functional groups of the component to which the materials are added and are reactive with the functional groups of the other component such that these components are delivered to the spray applicator at a predetermined volume ratio over a varied temperature range and shear rate range.