| 发明名称 |
PROCESSO E COMPOSICAO PARA LIMPAR QUIMICAMENTE,DE UMA SUPERFICIE METALICA,CROSTAS QUE CONTENHAM SULFETO E SEJAM SOLUVEIS EM ACIDO |
| 摘要 |
<p>Sulfide-containing scale is removed from metal surfaces by contacting the encrusted surface with an aqueous acid cleaning solution having an aldehyde (e.g., formaldehyde) dissolved or dispersed in the acid in an amount sufficient to prevent the evolution of hydrogen sulfide gas.</p> |
| 申请公布号 |
BR7907921(A) |
申请公布日期 |
1980.07.22 |
| 申请号 |
BR19797907921 |
申请日期 |
1979.12.05 |
| 申请人 |
DOW CHEM CO |
发明人 |
SMITH D;COFFEY M;FRENIER W;HUFFINES J |
| 分类号 |
C23G1/02;C23G1/06;(IPC1-7):C23G1/06 |
主分类号 |
C23G1/02 |
| 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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