| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrostatic coating method of an intermediate coating material and/or top coating material for an automobile by a wet-on-wet process after an electrically conductive primer is applied on a formed product with polyamide resin. SOLUTION: When an intermediate coating material and/or a top coating material for an automobile is applied by electrostatic coating on a formed body with polyamide resin for an automobile, an electrically conductive primer containing 50 to 10 wt.% electrically conductive material and 50 to 90 wt.% mixed compsn. of a urethane-modified linear polyester resin and an amino resin with 90/10 to 50/50 resin solid content ratio of the urethane-modified linear polyester resin/amino resin is applied on a formed product with polyamide resin. The surface electric resistance of the conductive primer is <=10<8>Ω.cm within 5 min, after coating. Then an intermediate coating and/or a top coating material is applied by wet-on-wet electrostatic coating, and then hardened by baking.
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