公开(公告)号：US5830580A

公开(公告)日：1998-11-03

申请号：US675776

申请日：1996-07-03

申请人： Ute Flammer ,  Fritz Mezger ,  Anja Keller ,  Werner Funke

发明人： Ute Flammer ,  Fritz Mezger ,  Anja Keller ,  Werner Funke

IPC分类号： B05D1/36 ,  B05D3/02 ,  B05D3/10 ,  B05D5/00 ,  B05D7/14 ,  B05D7/24 ,  B32B15/08 ,  C08L61/04 ,  C08L61/08 ,  C08L61/20 ,  C08L61/24 ,  C08L63/00 ,  C09D5/00 ,  C09D5/08 ,  C09D161/04 ,  C09D161/08 ,  C09D161/20 ,  C09D163/00 ,  C09J161/24 ,  B32B27/00

CPC分类号： C09D5/08 ,  Y10T428/269 ,  Y10T428/31692

摘要： The present invention relates to a painted sheet metal part, such as a car body, with a polyacid layer between the coat of paint and the surface of the sheet metal part and to a method for applying such a coating on the part before painting. Initially, the part is cleaned and de-greased, and subsequently the polyacid layer is deposited and stabilized. In order to be able to apply this layer without losing wet adhesion qualities of the coat of paint and the anti-corrosive effect of coating layer, while presenting fewer ecological disadvantages or harmful consequences, polyacids, which comprise homopolymers or copolymers of carboxylic acids containing double bonds or of functional esters of carboxylic esters, or copolymers of carboxylic acids with vinyl compounds, are used pursuant to the present invention as the protective bonding layer. The polyacids used are further combined with polymers having a glass transition temperature above 100.degree. C., such as phenolic resins, urea resins or epoxy resins, and/or with low molecular carboxylic acids with 2 to 30 carbon atoms in the carbon chain, in order to increase the corrosion protection effect. The deposited anti-corrosion layer is stabilized by thermal curing at about 100.degree. to 150.degree. C. The polymers of the corrosion inhibitor layer can be crosslinked intermolecularly, intramolecularly or with the adjacent paint layer with functional groups which are not absorbed by the substrate.

摘要翻译： 本发明涉及一种涂漆的钣金件，例如车身，在涂料涂层和钣金件表面之间具有多酸层，以及在涂漆之前在该部件上施加这种涂层的方法。 最初，清洁和去油脂，随后多层沉积和稳定。 为了能够施加该层而不会降低涂层的湿粘附性和涂层的抗腐蚀作用，同时呈现较少的生态缺陷或有害后果，所述多酸包含含有双重羧酸的均聚物或共聚物 键或羧酸酯的官能酯或羧酸与乙烯基化合物的共聚物根据本发明用作保护性结合层。 使用的多元酸与玻璃化转变温度高于100℃的聚合物进一步组合，例如酚醛树脂，脲醛树脂或环氧树脂，和/或与碳链中具有2至30个碳原子的低分子量羧酸，在 以提高防腐效果。 沉积的防腐层通过在约100℃至150℃下的热固化而稳定化。腐蚀抑制剂层的聚合物可以分子间，分子内或相邻涂层与具有不被基底吸收的官能团交联。