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:
Oct. 04, 1988
Filed:
Nov. 18, 1986
Takeshi Adaniya, Tokyo, JP;
Masaaki Yamashita, Tokyo, JP;
Akira Enatsu, Tokyo, JP;
Takahiro Kubota, Tokyo, JP;
Norio Nikaido, Kanagawa, JP;
Yoshiaki Miyosawa, Kanagawa, JP;
Tadashi Nishimoto, Kanagawa, JP;
Kazuhiko Ozawa, Kanagawa, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to a highly corrosion-resistant surface-treated steel plate. The steel plate of the present invention comprises a zinc deposition or zinc alloy deposition film as the undercoat deposition layer, a chromate film formed on the undercoat deposition layer and a film of a resin composition formed on the chromate film. This resin composition comprises a base resin formed by adding at least one basic nitrogen atom and at least two primary hydroxyl groups to terminals of an epoxy resin. The resin composition may comprise a polyisocyanate compound as the curing agent. Furthermore, the resin composition may comprise silica or a hardly soluble chromium compound as the additive for improving the corrosion resistance. Moreover, the resin composition may comprise a silane compound as the crosslinking agent for the base resin and silica.