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:
Nov. 13, 1990
Filed:
Mar. 01, 1988
Takeshi Adaniya, Tokyo, JP;
Masaaki Yamashita, Tokyo, JP;
Takahiro Kubota, Tokyo, JP;
Norio Nikaido, Hiratsuka, JP;
Yoshiaki Miyosawa, Hiratsuka, JP;
Tadashi Nishimoto, Hiratsuka, JP;
Kazuhiko Ozawa, Hiratsuka, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Kansai Paint Co., Ltd., Amagasaki, JP;
Abstract
This invention relates to a highly corrosion-resistant, multi-layer coated steel sheet, and includes an undercoat film obtained by galvanization or zinc-alloy plating and a chromate coated film thereon, on which a resin-composition film is further applied, comprising an organic high-molecular weight resin having a glass transision temperature of 343.degree. to 423.degree. K. and soluble in organic solvent and hydrophobic silica. For the purpose of improvement of corrosion preventiveness, a sparingly water soluble Cr compound may be contained in this resin composition film. Together with this sparingly water soluble Cr compound, a di- or tri-alkoxysilane compound may be also contained in the resin composition film.