发明公开
- 专利标题： Production of concentrated aqueous polyphosphate solutions
- 专利标题（中）： 浓缩水溶性聚磷酸盐溶液的生产
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申请号： EP91850166.9申请日： 1991-06-14
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公开(公告)号： EP0462956A3公开(公告)日： 1992-09-30
- 发明人: Sikorski, Charles Francis , DeMarko, John William
- 申请人： FMC Corporation
- 申请人地址： 2000 Market Street Philadelphia Pennsylvania 19103 US
- 专利权人： FMC Corporation
- 当前专利权人： FMC Corporation
- 当前专利权人地址： 2000 Market Street Philadelphia Pennsylvania 19103 US
- 代理机构： Wibom, Hans Sven Erik
- 优先权： US539244 19900618
- 主分类号： C01B25/41
- IPC分类号： C01B25/41 ; C01B25/42
摘要：
A concentrated aqueous alkali metal polyphosphate solution is prepared by adding polyphosphoric acid having a P₂O₅ assay of about 82% to about 85% to a quantity of concentrated aqueous alkali metal hydroxide sufficient to neutralize the acid. The resulting polyphosphate solution is richer in pyrophosphate and tripolyphosphate moieties than the acid.
公开/授权文献
- EP0462956B1 Production of concentrated aqueous polyphosphate solutions 公开/授权日：1995-02-22
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