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 |
US2015322575(A1) |
申请公布日期 |
2015.11.12 |
申请号 |
US201514691985 |
申请日期 |
2015.04.21 |
申请人 |
Bulk Chemicals, Inc. |
发明人 |
SCHLOSSER Ted M.;MUSINGO Edward M. |
分类号 |
C23C22/07;C23C22/82;C23C22/78 |
主分类号 |
C23C22/07 |
代理机构 |
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代理人 |
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主权项 |
1. A process for treating a surface of a zinc-containing metal, said process comprising contacting the metal surface with an aqueous composition comprising an organopolyphosphonic acid or salt thereof, an organosilane, and a trivalent chromium compound. |
地址 |
Reading PA US |