Method for obtaining ADN crystals through crystallization in a viscous medium
US8491736B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Sep 17, 2009 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Jan 2, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06B31/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a method for crystallizing ammonium dinitramide (ADN), through spontaneous nucleation and crystal growth, from a solution containing said ammonium dinitramide (AND) dissolved in a solvent. Said solvent characteristically has a viscosity greater than or equal to 0.25 Pa s (250 cP) when said spontaneous nucleation is implemented. The ADN crystals obtained by said method have a median shape factor of 1 to 1.5 and are perfectly suitable for placement in the composition of energy materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.