发明名称 |
Method for improving the thermal shock resistance of a washcoated body. |
摘要 |
<p>Prepn. of a thermally shock resistant wash coated substrate comprises: (a) introducing a buffer soln. (I) into the microcracks and opt. into the pores of a porous sintered body having microcracks and pores of less than 5mu dia.; then (b) contacting the body with a washcoating slurry (II) comprising an oxide of no less than 50 m2/g or a precursor and a gel-forming agent to form a gel at the interface of (I) and (II) to prevent the slurry entering the microcracks; and (c) calcining the treated body at a temp. and for a time sufficient to form a wash coated substrate. (I) and (II) are at pH's which form a gel on contact.</p> |
申请公布号 |
EP0625371(A1) |
申请公布日期 |
1994.11.23 |
申请号 |
EP19940106950 |
申请日期 |
1994.05.04 |
申请人 |
CORNING INCORPORATED |
发明人 |
BEAUSEIGNEUR, PATRICIA ANN, CORNING INC,;PATIL, MALLANAGOUDA;LACHMAN, IRWIN MORRIS |
分类号 |
B01J37/02;B01J37/03;C03C23/00;C04B38/00;C04B41/45;C04B41/52;C04B41/81;C04B41/85;C04B41/89;(IPC1-7):B01J37/02 |
主分类号 |
B01J37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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