Shinto Paint Co., Ltd.

Katsuhiko Matsuo

Takeshi Kuninori

Akio Ikehira

Kuninori Takeshi

Coating composition containing a resin and fine particles of an electrically semiconductive substance, whereby a coating film to be formed therefrom on a work article surface exhibits a varistor property represented by the following equation (1):

Coating composition and process for the production of coated metal

The present invention provides a method for coating metal plates by applying an organic coating composition containing 5 to 70% by weight of molybdenum disulfide, to the metal plate, in a dry film thickness of from 0.5 to 20.mu., drying the applied composition, and subjecting the coated metal plate to forming processing, and electrodeposition coating.

Method for coating metal plates

A shaped or unshaped article of a non-ferrous metal sheet preferably aluminum having an organic, surface coating film containing conductive and/or semiconductive fine particles, preferably molybdenum dissulfide is integrally bonded with a shaped or unshaped article of a steel sheet having or not having an organic, surface coating film; and this integrated body is subjected simultaneously to electrodeposition coating. The non-ferrous metal sheet having an organic, surface coating film containing conductive and/or semiconductive, fine particles shows excellent electrodeposition coating characteristics which can be easily regulated. Hence, integral coating after bounding with a steel sheet gives the same degree of film thickness and surface smoothness on both of the non-ferrous metal and steel sheets. This method is particularly suitable for the coating of automobile bodies integrally composed of non-ferrous metal and steel sheets ensuring energy- and labor-saving and giving final products of uniform finish.

Growing community of inventors

Ibaraki, Japan

Katsuhiko Matsuo