Evaluation of gaseous and solid byproducts from chemical reactions
US11573202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2021 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Oct 16, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method and apparatus for evaluating reaction molecular byproducts of pyrotechnic reactions. A closed calorimetry bomb holds pyrotechnic material, which is detonated by a charge. The calorimetry bomb is vented directly into a gas chromatography machine, where gas phase molecules are separated based on their polarity. The separated molecules are then injected into a mass spectrometer and characterized by their mass fragmentation. The remaining residual solids within the bomb are extracted and injected into a liquid chromatography instrument where they are separated by their polarity. The separated molecules are then injected into a mass spectrometer and characterized by their mass fragmentation pattern. The method provides a complete picture of the reaction pathways and products to aid in regulatory compliance of incorporating energetic materials into real-world applications, particularly those in the family of PFAS containing compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.