Patent ID: 6855403

Claim:
A method for preparing a multi-layer coating composition comprising: (a) applying a first-coating composition to a substrate wherein the first-coating composition comprises a polymer product having a gel fraction of 0.3 to 0.95 in a solvent selected from one or more of acetone and tetrahydrofuran and wherein the first-coating composition is applied in one or more separate applications, allowing the first-coating composition to dry after each application; and (b) applying a second-coating composition onto the dried first-coating composition of step (a) wherein the second-coating composition comprises a polymer product having a gel fraction of greater than 0.95 and up to 0.99 in a solvent selected from one or more of acetone and tetrahydrofuran and wherein the second-coating composition is applied in one or more separate applications, allowing the second-coating composition to dry after each application.