- 专利标题: Composition for coating of metallic surfaces with good adhesion, in particular aluminum materials
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申请号: US15534637申请日: 2015-12-15
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公开(公告)号: US11346002B2公开(公告)日: 2022-05-31
- 发明人: Lars Sebralla , Stefan Birkenheuer , Manfred Walter , Nawel Souad Khelfallah
- 申请人: Chemetall GmbH
- 申请人地址: DE Frankfurt am Main
- 专利权人: Chemetall GmbH
- 当前专利权人: Chemetall GmbH
- 当前专利权人地址: DE Frankfurt am Main
- 代理机构: Armstrong Teasdale LLP
- 优先权: DE102014225801.4 20141215
- 国际申请: PCT/EP2015/079678 WO 20151215
- 国际公布: WO2016/096777 WO 20160623
- 主分类号: C23C22/00
- IPC分类号: C23C22/00 ; C23C22/34 ; C23C22/06 ; C23C22/36 ; C23C22/05 ; C09D183/04 ; C09D7/62 ; C09D133/02
摘要:
The present invention relates to an acidic aqueous composition for coating metallic surfaces, particularly of aluminium materials, that comprises, besides water and optionally further components, a) at least one compound selected from the group consisting of organoalkoxysilanes, organosilanols, polyorganosilanols, organosiloxanes and polyorganosiloxanes, b) at least one compound selected from the group consisting of titanium, zirconium, hafnium and aluminium compounds and silicon complex fluoride, and c) at least one copolymer which is stable at least in a segment of the pH range below 6 and which comprises, in alternating configuration, monomer units containing at least one carboxylic and/or phosphonic acid group and monomer units containing no acid group. The invention further relates to a corresponding coating method and to the use of the substrates coated by this method.
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