The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 1991
Filed:
Mar. 24, 1989
Toshiharu Nakaya, Osaka, JP;
Satoru Nagahata, Osaka, JP;
Sakuichi Konishi, Nara, JP;
Koichi Kuwano, Osaka, JP;
Nippon Paint Co., Ltd., Osaka, JP;
Abstract
The invention concerns a method for forming a coating with excellent adhesion, water resistance and appearance which comprises the combination of steps of applying on the hydrophobic surfaces having a surface tension of 35 dyne/cm or less of a substrate a dry surface treatment selected from vacuum plasma treatment, corona discharge treatment and ozonization treatment, coating thus treated surfaces with a dispersion type aqueous coating composition comprising an aqueous varnish of at least one aqueous resin whose 1 wt % deionized water solution has a surface tension of 51 dyne/cm or less and which has a water tolerance of 4 or more, and water insoluble resin uniformly dispersed in fine particles in said varnish, the water insoluble resin having a SP value which is 1.0 to 2.2 lower than that of said aqueous resin, and baking the coating. The present method is specifically useful in the coating of automobile bodies, appliances and other high-quality products.