发明名称 |
Method for producing dust-free sodium dithionite. |
摘要 |
<p>There is disclosed a method for the production of dust-free sodium dithionite from the reaction of a alkaline formate sulfur dioxide and an alkaline metal agent in the presence of a thiosulfate reactive compound by introducing a water-soluble polymer having a molecular weight less than 60,000 and delaying the start of the alkaline metal agent until the sodium formate and the sulfur dioxide have begun to be introduced into the reactor.</p> |
申请公布号 |
EP0410585(A1) |
申请公布日期 |
1991.01.30 |
申请号 |
EP19900307058 |
申请日期 |
1990.06.28 |
申请人 |
HOECHST CELANESE CORPORATION |
发明人 |
BUSH, JOSEPH L.;WINSLOW, CHARLES E. |
分类号 |
C01B17/66 |
主分类号 |
C01B17/66 |
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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