基本信息:
- 专利标题： 新颖复合化学转化涂膜，使用其的多层涂膜和形成多层涂膜的方法
- 专利标题（英）：Novel composite chemical-conversion coating, multilayered coating film including the same, and method of forming multilayered coating film
- 申请号：CN200780008260.1 申请日：2007-03-05
- 公开(公告)号：CN101400827B 公开(公告)日：2011-08-31
- 发明人： 金子敏雄 , 冈本聪 , 蓬原正伸 , 道井诚 , 冈田荣作
- 申请人： 日本油漆株式会社 , 丰田自动车株式会社
- 申请人地址： 日本大阪府
- 专利权人： 日本油漆株式会社,丰田自动车株式会社
- 当前专利权人： 日本油漆株式会社,丰田自动车株式会社
- 当前专利权人地址： 日本大阪府
- 代理机构： 中国专利代理(香港)有限公司
- 代理人： 吕彩霞; 孙秀武
- 优先权： 061381/2006 2006.03.07 JP; 061387/2006 2006.03.07 JP
- 国际申请： PCT/JP2007/054197 2007.03.05
- 国际公布： WO2007/102468 JA 2007.09.13
- 进入国家日期： 2008-09-08
- 主分类号： C23C28/04
- IPC分类号： C23C28/04 ; B05D3/10 ; C25D9/10 ; C25D13/10 ; C25D13/20
A composite chemical-conversion coating formed on a metallic base and comprising a crystalline continuous coating film. Also provided is a method of forming a multilayered coating film which comprises (A) a first step in which a metallic base to be treated is immersed in an aqueous solution containing a nitric acid salt of a rare-earth metal and is subjected to cathodic electrolysis to deposit a crystalline continuous coating film comprising a rare-earth metal compound in an amount of 1-110 mg/m<2> and (B) a second step in which this metallic base is subjected to cathodic electrodeposition with an electrodeposition composition containing an (in)organic acid salt of a rare-earth metal. Compared to conventional multilayered coating films formed by pretreatment and cationic electrodepositionsteps with a chemical treating liquid and an electrodeposition composition, this multilayered coating film comprises an extremely small amount of a composite chemical-conversion coating and an electrodeposition film successively formed in this order. This multilayered coating film has excellent coating adhesion and corrosion resistance which are equal or superior to those of the coating films formed by the conventional steps. The composite chemical-conversion coating is a novel coating having high profitability and highly contributing to environmental preservation.
公开/授权文献:
- CN101400827A 新颖复合化学转化涂膜，使用其的多层涂膜和形成多层涂膜的方法 公开/授权日：2009-04-01