Ammonium polyphosphate materials and processes for preparing the same
Abstract
Abstract AMMONIUM POLYPHOSPHATE COMPOSITIONS WHICH ARE SUBSTANTIALLY WATER-INSOLUBLE AND HAVING THE EMPIRICAL FORMULA H(N-M)+2(NH4)MPNO3N+1 WHEREIN N IS AN INTEGER HAVING AN AVERAGE VALUE GREATER THAN 10 AND M/N HAS AN AVERAGE VALUE BETWEEN ABOUT .7 AND ABOUT 1.1 AND THE MAXIMUM VALUE OF M IS EQUAL TO N+2, ARE DISCLOSED. THESE AMMONIUM PHOSPHATES ARE PREPARED BY HEAT TREATING EITHER (A) THE REACTION PRODUCT OF A CONDENSED PHOSPHORIC ACID AND A COMBINED AMMONIATING AND CONDENSING AGENT, (B) REACTION PRODUCT OF AN ORTHOPHOSPHORIC ACID AND A COMBINED AMMONIATING AND CONDENSING AGENT, (c) AN AMMONIUM ORTHOPHOSPHATE AND A COMBINED AMMONIATING AND CONDENSING AGENT, (D) AN AMMONIUM PYROPHOSPHATE SALT AND A COMBINED AMMONIATING AND CONDENSING AGENT, OR (E) UREA PHOSPHATE, AT A TEMPERATURE UP TO ABOUT 260*C. THE TYPICAL AMMONIATING AND CONDENSING AGENT IS UREA. THE AMMONIUM POLYPHOSPHATES ARE USEFUL AS FIRE RETARDANTS, BUILDERS IN SYNTHETIC DETERGENT COMPOSITIONS AND AS A FERTILIZER.
Inventors
- 👤 P Sears
- 👤 H Vandersall
Bibliographic Details
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