| 发明名称 |
METHOD OF DECREASING CONCENTRATION OF CARBONIC ION |
| 摘要 |
A process for reducing the concentration of carbonate in an aqueous solution is disclosed which includes contacting the aqueous solution with a strongly basic ion-exchange resin. The process is preferably used for treating aqueous solutions used for etching polyimides which solutions contain an alkali metal hydroxide. |
| 申请公布号 |
JPS57113844(A) |
申请公布日期 |
1982.07.15 |
| 申请号 |
JP19810179092 |
申请日期 |
1981.11.10 |
| 申请人 |
INTERN BUSINESS MACHINES CORP |
发明人 |
JIYOSEFU JIYOOJI AMIIN;NERUSON PIITAA FURANCHIYATSUKU;JIYON REISHIRU;DENISU RUISU RIIBENBAAGU |
| 分类号 |
C09K13/04;B01J41/04;C01D1/28;C08J7/02;C08J7/12;C09K13/02;H01L21/311;H05K3/06 |
主分类号 |
C09K13/04 |
| 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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