| Patent Number |
Title Of Patent |
Date Issued |
| T996001 |
Production of ammonium potassium polyphosphates |
July 1, 1980 |
| Embodiment No. 1. Urea phosphate prepared from wet-process phosphoric acid is heated with monopotassium orthophosphate in a mole ratio of 0.25 to 4.0 at 130.degree. to 200.degree. C. to form an ammonium potassium polyphosphate having an average chain length between 1.2 and 2.5. The a |
| 4308048 |
Production of ammonium potassium polyphosphates |
December 29, 1981 |
| Embodiment No. 1. Urea phosphate prepared from wet-process phosphoric acid is heated with monopotassium orthophosphate in a mole ratio of 0.25 to 4.0 at 130.degree. to 200.degree. C. to form an ammonium potassium polyphosphate having an average chain length between 1.2 and 2.5. The a |
| 3975178 |
Purification of wet-process phosphoric acid with methanol and ammonia |
August 17, 1976 |
| Our invention relates to an improved process for the partial purification of wet-process phosphoric acid with co-production of impure phosphoric acid or solid fertilizer materials containing most of the impurities originally present in the crude acid. The crude acid is treated with m |
