发明名称 |
Trivalent chromium passivation and pretreatment composition and method for zinc-containing metals |
摘要 |
Aqueous compositions useful as pretreatments prior to painting and to prevent the formation of white rust in the uncoated condition include an organopolyphosphonic acid or salt thereof, an organosilane, and a trivalent chromium compound. A method for treating a surface of a zinc-containing metal includes contacting the surface with an aqueous composition including an organopolyphosphonic acid or salt thereof, an organosilane, and a trivalent chromium compound. The composition may also include an agent for reducing hydrophilicity, such as a polyacrylic acid. The aqueous composition has been found to be particularly well-suited for treating a zinc-containing metal to passivate the surface, improve paint adhesion, and/or improve corrosion resistance. |
申请公布号 |
US9039845(B2) |
申请公布日期 |
2015.05.26 |
申请号 |
US200912612362 |
申请日期 |
2009.11.04 |
申请人 |
Bulk Chemicals, Inc. |
发明人 |
Schlosser Ted M.;Musingo Edward M. |
分类号 |
C23C22/30;C23C22/34;C23C22/53 |
主分类号 |
C23C22/30 |
代理机构 |
RatnerPrestia |
代理人 |
RatnerPrestia |
主权项 |
1. An aqueous composition for treating a surface of a zinc-containing metal, said composition comprising an organopolyphosphonic acid or salt thereof, polyalkyleneoxidealkoxysilane, and a trivalent chromium compound. |
地址 |
Reading PA US |