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    • 3. 发明申请
    • SOLUBLE ACID POLYPHOSPHATES AND DEVICE FOR THEIR PRODUCTION
    • 水溶性,酸聚磷酸盐和方法和设备生产
    • WO99000324A1
    • 1999-01-07
    • PCT/EP1998/003823
    • 1998-06-23
    • A23C19/082C01B25/41
    • C01B25/41A23C19/082
    • The invention relates to a method for producing soluble acid polyphosphates with an Na/P ratio of 0.3 to 0.6, a P2O5 content of over 77 %wt., a Na2O content of under 20 % and a residual water content of 3-10 %. The invention is characterized in that an aqueous phosphate solution is dried in order to form chain-like polyphosphates with an average chain length of 10 to 30, and then fused for 30-180 minutes at temperatures of 400-600 DEG C. The fusion is cooled, forming a vitreous product. During fusion, steam pressure of 0.1 to 0.5 bar is maintained in the atmosphere in contact with the fusion. The invention also relates to the polyphosphates produced by this method and to their use.
    • 本发明涉及一种用于具有0.3至0.6,超过77重量%的P 2 O 5含量,在20%以下Na 2 O含量和残余水含量的钠/ P比率产生可溶性酸多磷酸盐 3-10%,其中干燥链状以形成具有10的平均链长度的多磷酸盐为30,所述磷酸盐的水溶液和在400的温度下熔化30〜180分钟,以600℃和冷却熔体以形成玻璃状产物,其中 竖立在大气Berühung用0.1至0.5巴的熔融的水蒸汽压力的熔化过程中得以保持,所述化合物通过该方法多磷酸盐以及它们的用途而获得。