| 摘要 |
<p>PURPOSE: Provided is a method for painting a substrate which increases hardness and adhesive strength and can be used to coat both the thermoplastic polyolefin (TPO) surfaces of a car and its steel surfaces as well. CONSTITUTION: A method comprises :a) priming the substrate with a primer selected from the group consisting of epoxy resin primers and polyester resin primers; b) applying to the primed substrate a crosslinkable basecoat composition comprising from 10 to 90 percent by weight of an epoxidized monohydroxylated polydiene polymer, from 8 to 60 percent by weight of an amino resin crosslinking agent, and from 2 to 40 percent by weight of a reinforcing agent; and c) applying over the basecoat a clearcoat selected from the group consisting of epoxidized monohydroxylated polydiene-based clearcoats, polyester clearcoats, and acrylic clearcoats.</p> |
