Process for the manufacture of alkali metal polyphosphates

Details Process for the manufacture of alkali metal polyphosphates Process for the manufacture of alkali metal polyphosphates

1975-06-30

1976-11-23

Vertiz, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423305, C01B 1516, C01B 2526

Patent

active

039937348

ABSTRACT:
A process for the manufacture of alkali metal polyphosphates having a predetermined crystalline form, in which a mixture of alkali metal orthophosphates having a molar ratio of alkali metal oxide to phosphoric anhydride between 1 and 2 is first granulated, the resulting granules are dried and then are subjected to thermal treatment in the presence of aqueous vapor.

REFERENCES:
patent: 3210154 (1965-10-01), Klein et al.
patent: 3309174 (1967-05-01), Pals
patent: 3382036 (1968-05-01), Post et al.

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