Ammonium polyphosphate production

Details Ammonium polyphosphate production Ammonium polyphosphate production

1975-08-15

1977-08-09

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423310, 423313, 71 43, C01B 1516, C01B 2526, C05B 1100

Patent

active

040411338

ABSTRACT:
Stable aqueous ammonium phosphate containing a higher proportion of polyphosphates is obtained by reacting phosphoric acid with ammonia in the presence of sulfuric, nitric or hydrochloric acids under conditions sufficient to produce a partially neutralized melt containing polymeric phosphates at a temperature between 400.degree. and about 750.degree. F. by the autogenous heat of neutralization, quenching and further neutralizing the melt.

REFERENCES:
patent: 1971563 (1934-08-01), Hirschkind
patent: 2902342 (1959-09-01), Kurley
patent: 3310371 (1967-03-01), Lutz
patent: 3775534 (1973-11-01), Meline
patent: 3939255 (1976-02-01), Moore

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