Process for making multifunctional tetrazole polyols to produce tetrazole based polymers
US7396938B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2005 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Sep 24, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D257/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for making energetic cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing poly tetrazole, purifying the poly tetrazole by precipitation in a second solvent, and reacting an effective amount of the purified poly tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing tetrazole polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.