WASHCOATING HIGH POROSITY CERAMIC SUBSTRATES
    1.
    发明申请
    WASHCOATING HIGH POROSITY CERAMIC SUBSTRATES 审中-公开
    洗涤高倍率陶瓷基材

    公开(公告)号:US20100129547A1

    公开(公告)日:2010-05-27

    申请号:US12578962

    申请日:2009-10-14

    IPC分类号: B05D7/00

    摘要: A method of washcoating a high porosity honeycomb substrate is described that involves contacting the channels of the honeycomb with a solution of a viscosity raising material for a time sufficient to fill the pores of the honeycomb with the solution and viscosity changing material. When the pores come into contact with a washcoat slurry, the pH of the slurry at the pore site is changed and the viscosity of the slurry is raised such that it cannot enter the pores. Viscosity raising materials include water soluble polyamines. In one embodiment the polyamine is polyethylenimine. Amino-containing compounds having a molecular weight in the range of 300 to 50,000 can be used in practicing the invention.

    摘要翻译: 描述了一种对高孔隙率蜂窝状基材进行洗涂的方法,其包括使蜂窝状通道与粘度提高材料的溶液接触足够的时间以用溶液和粘度变化材料填充蜂窝的孔。 当孔与修补基面涂料浆料接触时,孔部位处的浆料的pH变化,并且浆料的粘度升高,使得其不能进入孔中。 粘度提高材料包括水溶性多胺。 在一个实施方案中,多胺是聚乙烯亚胺。 分子量在300〜50,000的含氨基化合物可用于实施本发明。