| 发明名称 |
PRETREATMENT COMPOSITIONS AND METHODS FOR COATING A METAL SUBSTRATE |
| 摘要 |
Disclosed are pretreatment compositions and associated methods for treating metal substrates with pretreatment compositions, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The pretreatment composition includes: (a) a group IIIB and/or IVB metal; (b) free fluorine; (c) a source of aluminum ions; and (d) water. The methods include contacting the metal substrates with the pretreatment composition. |
| 申请公布号 |
US2014305803(A1) |
申请公布日期 |
2014.10.16 |
| 申请号 |
US201414307521 |
申请日期 |
2014.06.18 |
| 申请人 |
PPG Industries Ohio, Inc. |
发明人 |
McMillen Mark W.;Rakiewicz Edward F.;Simpson Mark W.;DeChant James A. |
| 分类号 |
C09D5/24;C23C28/00;B05D3/10 |
主分类号 |
C09D5/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A pretreatment composition for treating a metal substrate comprising:
(a) a group IIIB and/or IVB metal; (b) an electropositive metal; (c) free fluorine; (d) a source of aluminum ions; and (e) water, wherein the source of aluminum ions is supplied in an amount sufficient to maintain the level of free fluorine in the composition to no less than 0.1 ppm and no more than 750 ppm. |
| 地址 |
Cleveland OH US |
