Potassium polyphosphate fertilizers
US4158558A · kind A · utility
6Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1978 |
| Grant date | Jun 19, 1979 |
| Priority date | — |
| Expiry date | Mar 28, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53239
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for the production of a potassium polyphosphate liquid fertilizer in which potassium chloride is reacted with phosphoric acid or polyphosphoric acid in a specific molar ratio, steam, air or other inert gas being blown through the reaction mixture to facilitate removal of hydrochloric acid. The reaction product is dissolved in water or a weak solution, of a liquid ferilizer, the pH adjusted and the resulting solution or slurry is suitable for direct use as a solution fertilizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.