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:
May. 25, 2010
Filed:
Aug. 21, 2006
Toshio Inbe, Shinagawa-ku, Tokyo 140-8675, JP;
Masahiko Matsukawa, Shinagawa-ku, Tokyo 140-8675, JP;
Kotaro Kikuchi, Shinagawa-ku, Tokyo 140-8675, JP;
Toshio Inbe, Shinagawa-ku, Tokyo 140-8675, JP;
Masahiko Matsukawa, Shinagawa-ku, Tokyo 140-8675, JP;
Kotaro Kikuchi, Shinagawa-ku, Tokyo 140-8675, JP;
Other;
Abstract
A surface-conditioning composition can form a denser phosphate coating film having more satisfactory coating weight on the surface of a metal material compared to a conventional one and, therefore, can reduce the electrolytic corrosion of a metal material during a chemical conversion treatment, form a chemical conversion coating film having a satisfactory coating weight even when applied to a hardly convertible metal material (e.g., an aluminum metal material, a high tensile strength steel plate), improve the productivity rate of the chemical conversion treatment, resulting in the reduction of the time required for the chemical conversion treatment, and enables a metal phosphate particle to be dispersed in a surface-conditioning solution highly stably. This composition includes a particle of a phosphate of a bivalent or trivalent metal and has a pH value ranging from 3 to 12. The particle has a Dvalue of 3 μm or less. The composition additionally includes (1) a phenolic compound and (2) a stabilizing agent.