Ammonium nitrate prill having a non-hygroscopic shell
US10336662B1 · kind B1 · utility
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5References
18Claims
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Assignee
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Key dates
| Filing date | Sep 26, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Apr 29, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06B31/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention is an article of manufacture, a composition of matter and an in-situ process for making non-hygroscopic ammonium nitrate prills. The non-hygroscopic prills are formed from dried prills of ammonium nitrate, in reaction vessel having an inert gas atmosphere and a nonpolar reaction diluent. A shell is formed in situ by reacting a first reactant with a second reactant in the presence of the AN prills en masse. The prills, en masse, are individually sealed in the shell made of a highly crosslinked polymeric material. The material is a reaction product of a diglycidyl hydantoin and a polyoxypropylene-triamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.