| 摘要 |
Method for producing a multicoat coating comprises: applying a primer-surfacer coat (I) to an optionally pretreated substrate, curing coat (I), applying a basecoat (II) to coat (I), optionally curing the basecoat (II), applying a clearcoat (III) to basecoat (II), and curing basecoat (II) and/or clearcoat (III), wherein coat (I) is obtained by applying a nonaqueous, solventborne coating material comprising by weight: at least 20% of at least one organic solvent, at least 8% of at least one first polyester (A1), having a glass transition temperature of at least 20° C. and an acid number of 0 to 40 mg KOH/g; at least 8% by weight of at least one second polyester (A2), different from (A1) and having a glass transition temperature of not more than 10° C.; at least one crosslinker (B); and at least 8% of one or more fillers and/or pigments (C). |
| 主权项 |
1. A method for producing a multicoat coating comprising:
i) applying a primer-surfacer coat (I) to an optionally pretreated substrate, ii) curing the primer-surfacer coat (II), iii) applying a basecoat (II) to the cured primer-surfacer coat (I), iv) optionally curing the basecoat (II), v) applying a clearcoat (III) to the cured or uncured basecoat (II), and vi) curing the clearcoat (III) or the basecoat and the clearcoat if the basecoat was not cured in step iv), wherein the primer-surfacer coat (I) is obtained by applying a nonaqueous, solventborne coating material (F) comprising
at least 20% by weight, based on the total coating material (F), of at least one organic solvent, and alsoA1) at least 8% by weight, based on the total coating material (F), of at least one first polyester (A1), having a glass transition temperature of at least 20° C. and an acid number of 0 to 40 mg KOH/g,A2) at least 8% by weight, based on the total coating material (F), of at least one second polyester (A2), different from (A1) and having a glass transition temperature of not more than 10° C.,B) at least one crosslinker (B), andC) at least 8% by weight, based on the total coating material (F), of one or more fillers and/or pigments (C). |
