| abstract |
ABSTRACT An aqueous composition employed to form protective film coatings on, for example, automobile body surfaces, comprises an aqueous resin having polysiloxy groups and a cross-linking agent including an amino resin, and a non-yellowing, multi-functional, blocked isocyanate compound. Thus composed, the aqueous composition can be employed to form a transparent superficial film over a pigmented base film in a multi-film aqueous coating exhibiting acid-proof and water-repellent characteristics. A process in which the base film is preheated is effective for improving the appearance of the surface coating. |