公开(公告)号：EP0462956A2

公开(公告)日：1991-12-27

申请号：EP91850166.9

申请日：1991-06-14

申请人： FMC Corporation

发明人： Sikorski, Charles Francis ,  DeMarko, John William

IPC分类号： C01B25/41 ,  C01B25/42

CPC分类号： C01B25/41 ,  C01B25/425

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.

摘要翻译： 通过向一定量的足以中和酸的浓碱碱金属氢氧化物水溶液中加入具有约82％至约85％的P2O5测定的多磷酸制备浓缩的碱金属多磷酸盐水溶液。 所产生的聚磷酸盐溶液比酸更富含焦磷酸盐和三聚磷酸盐部分。

公开(公告)号：EP0462956B1

公开(公告)日：1995-02-22

申请号：EP91850166.9

申请日：1991-06-14

申请人： FMC Corporation

发明人： Sikorski, Charles Francis ,  DeMarko, John William

IPC分类号： C01B25/41 ,  C01B25/42

CPC分类号： C01B25/41 ,  C01B25/425

公开(公告)号：EP0462956A3

公开(公告)日：1992-09-30

申请号：EP91850166.9

申请日：1991-06-14

申请人： FMC Corporation

发明人： Sikorski, Charles Francis ,  DeMarko, John William

IPC分类号： C01B25/41 ,  C01B25/42

CPC分类号： C01B25/41 ,  C01B25/425

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.