METHOD FOR MIXING AND APPLYING A MULTI-COMPONENT COATING COMPOSITION

摘要

A method of applying a multi-component coating composition to a substrate is disclosed. The coating composition comprises a polymeric component containing reactive functional groups and a hardener component comprising a curing agent having coreactive functional groups. The composition is applied with a spray applicator and the rheological profile of the polymeric component is adjusted by adding to the polymeric component one or more materials having a lower molecular weight than the polymeric component and which contain functional groups reactive with the curing agent such that the polymeric component and the hardener component are delivered to a mixing chamber in the spray gun at a predetermined volume ratio over a varied range of temperatures and shear rates.