Method of making finely particulate ammonium perchlorate
US4023935A · kind A · utility
5Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1971 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Sep 15, 1991 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01C1/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making finely particulate ammonium perchlorate which comprises establishing a two-phase liquid system in which the upper phase is a concentrated solution of ammonium perchlorate and the lower phase is a liquid which is immiscible with the upper phase solvent and a non-solvent for ammonium perchlorate. Precipitation of ammonium perchlorate from the solution into the non-solvent is effected by either cooling the solution or evaporating the solvent thereof while subjecting the system to ultra-sonic vibrations. Fine ammonium perchlorate particles collect in the non-solvent phase and are recovered therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.