发明授权
- 专利标题: Process for providing coatings on a metallic surface
- 专利标题(中): 在金属表面上提供涂层的方法
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申请号: US09684271申请日: 2000-10-06
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公开(公告)号: US06488990B1公开(公告)日: 2002-12-03
- 发明人: Sean M. Wetterer , Lars Sebralla , Manfred Walter
- 申请人: Sean M. Wetterer , Lars Sebralla , Manfred Walter
- 主分类号: B05D136
- IPC分类号: B05D136
摘要:
Sequentially applying two different coatings, in two steps, to metallic surfaces. Metallic surfaces are contacted at temperatures from 10-100° C. with aqueous solution A and then with aqueous solution B, or vice versa, wherein solution A contains an effective amount of zirconium, hafnium, titanium, silicon and/or boron, and of fluoride as ions and/or complex ions able to pickle metallic surfaces and generate a coating on the pickled metallic surface and that solution B contains an effective amount of one or more of XYZ, X*Y*Z* and/or X*Y*Z*Y*X* where Y is an organic group with 2-50 carbons, where X as well as Z is a group—each same or different—of OH—, SH—, NH2—, NHR—, CN—, CH═CH2—, OCN—, CONHOH—, COOR′, acrylamide-, epoxide-, CH2═CR″—COO—, COOH—, HSO3—, HSO4—, (OH)2PO—, (OH)2PO2—, (OH)(OR′)PO—, (OH)(OR′)PO2—, SiH3—, Si(OH)3—, where R′ is an alkyl group with 1-4 carbons, where R″ is hydrogen or an alkyl group with 1-4 carbons, and where X and Z are each bound to the Y in their terminal position, where Y* is an organic group with 1-30 carbons, where X* as well as Z* is a group—each same or different—of OH—, SH—, NH2—, NHR′—, CN—, CH═CH2—, OCN—, CONHOH—, COOR′, acrylamide-, epoxide-, CH2═CR″—COO—, COOH—, HSO3—, HSO4—, (OH)2PO—, (OH)2PO2—, (OH)(OR′)PO—, (OH)(OR′)PO2—, SiH3—, Si(OH)3—,N—CH2—PO(OH)2—, —N—[CH2—PO(OH)2]2— where R′ is an alkyl group with 1-4 carbons, where R″is hydrogen or an alkyl group with 1-4 carbons.