High absorbtivity sodium tripolyphosphate

Details High absorbtivity sodium tripolyphosphate High absorbtivity sodium tripolyphosphate

1987-04-24

1988-12-13

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423305, C01B 1516, C01B 2526

Patent

active

047909838

ABSTRACT:
High absorbtivity sodium tripolyphosphate is prepared by moisturizing the anhydrous orthophosphate particles produced by spray-drying an aqueous solution of sodium phosphates during the production of sodium tripolyphosphate. Following moisturization, the hydrated particles are calcined at a temperature within the range of from about 300.degree. C. to about 600.degree. C. to produce a granular sodium tripolyphosphate product having an absorbtivity value of at least about 30%.

REFERENCES:
patent: 3761573 (1973-09-01), Hinz et al.
patent: 3770644 (1973-11-01), Huttinger et al.
patent: 3932590 (1976-01-01), Pals et al.
patent: 4251498 (1981-02-01), Hensler et al.

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