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. 25, 2011
Filed:
Jul. 28, 2006
Toshiko Nakazawa, Tokyo, JP;
Seiichiro Shirahata, Tokyo, JP;
Toshiko Nakazawa, Tokyo, JP;
Seiichiro Shirahata, Tokyo, JP;
Nippon Paint Co., Ltd., Osaka, JP;
Abstract
The invention provides a surface conditioner which can prevent an aluminum alloy from stray current corrosion in chemical conversion treatment and reduce the difference between contact and noncontact areas in conversion coating build-up on an aluminum alloy and which enables the formation of excellent chemical conversion coatings on various metal materials and a surface conditioner which can prevent metal from rusting after surface conditioning and is excellent in dispersion stability in a treating bath. A surface conditioner to be applied prior to the phosphating of metal which contains (A) zinc phosphate particles having Dof 3 μm or below, (B) a water-soluble organic polymer, and (C) a layer clay mineral and has a pH of 3 to 12, characterized by further containing as the function imparting agent (D) a di- or tri-valent metal nitrite, zinc oxide and/or sodium hydroxide, or a nonionic or anionic surfactant.