发明名称 |
CLEANING AGENT AND METHOD |
摘要 |
<p>A cleaning agent characterized in that the agent comprises 0.1 to 4 wt.% of hydrofluoric acid, a surfactant of the following formula (1) in a concentration of 50 to 1500 ppm or a surfactant of the following formula (2) or (3) in a concentration of 50 to 100000 ppm, and the balance water, and a cleaning method of the surfaces of silicon wafers and the like using the agent RfCOONH4 wherein Rf is a fluorine-containing hydrocarbon group having 5 to 9 carbon atoms Rf'O(CH2CH2O)nR Rf'(CH2CH2O)nR wherein Rf' is a fluorine-containing hydrocarbon group having 5 to 15 carbon atoms, R is hydrogen or alkyl having 1 to 4 carbon atoms, and n is 5 to 20.</p> |
申请公布号 |
EP0742282(A1) |
申请公布日期 |
1996.11.13 |
申请号 |
EP19950906520 |
申请日期 |
1995.01.25 |
申请人 |
DAIKIN INDUSTRIES, LIMITED |
发明人 |
KEZUKA, TAKEHIKO;ITANO, MITSUSHI;KUBO, MOTONOBU |
分类号 |
C11D11/00;C11D1/04;C11D1/00;C11D1/72;C11D3/02;C11D7/08;C23G1/02;H01L21/304;H01L21/306;H01L21/308;(IPC1-7):C11D7/08;C11D7/28;C11D7/32;C11D1/68;C11D3/04 |
主分类号 |
C11D11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|