发明公开
EP0813577A2 ELECTROCOATING COMPOSITIONS AND METHODS THEREFOR
失效
ELEKTROTAUCHZUSAMMENSETZUNGEN UND DEREN VERFAHREN
- 专利标题： ELECTROCOATING COMPOSITIONS AND METHODS THEREFOR
- 专利标题（中）： ELEKTROTAUCHZUSAMMENSETZUNGEN UND DEREN VERFAHREN
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申请号： EP96906530申请日： 1996-02-16
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公开(公告)号： EP0813577A2公开(公告)日： 1997-12-29
- 发明人: KINLEN PATRICK J , JANSSON ROBERT F W
- 申请人： MONSANTO CO
- 专利权人： MONSANTO CO
- 当前专利权人： MONSANTO CO
- 优先权： US39312895 1995-02-21
- 主分类号： C09D5/44
- IPC分类号： C09D5/44 ; C25D13/06 ; C25D13/00
摘要：
A method for forming a coating on an electrically conductive surface is disclosed. The method comprises the steps of immersing the surface in a bath comprising an electrodepositable mixture of an intrinsically insulative polymer and an organic acid salt of an intrinsically conductive polymer, applying a voltage between an electrode and the surface in the bath to deposit a polymeric coating of the mixture on the surface, and curing the polymeric coating. The polymeric coating can be made electrically conductive by the additional step of immersing the polymeric coating in an organic acid after the deposition and before curing. A multilayered coating can be provided after curing the electrically conductive polymeric coating, by depositing a second or subsequent coating of an electrodepositable organic resin from an aqueous bath containing the resin on application of a voltage between an electrode and the electrically conductive polymeric subcoating in the bath. Also disclosed are resin compositions suitable for cationic electrodeposition.
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