Nontoxic, noncorrosive phosphorus-based primer compositions
US7857921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2006 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Nov 12, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06B45/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A primer composition that includes stabilized, encapsulated red phosphorus, at least one oxidizer, at least one secondary explosive composition, at least one light metal, and at least one acid resistant binder. The stabilized, encapsulated red phosphorus may include particles of red phosphorus, a metal oxide coating, and a polymer layer. The metal oxide coating may be a coating of aluminum hydroxide, bismuth hydroxide, cadmium hydroxide, cerium hydroxide, chromium hydroxide, germanium hydroxide, magnesium hydroxide, manganese hydroxide, niobium hydroxide, silicon hydroxide, tin hydroxide, titanium hydroxide, zinc hydroxide, zirconium hydroxide, or mixtures thereof. The polymer layer may be a layer of epoxy resin, melamine resin, phenol formaldehyde resin, polyurethane resin, or mixtures thereof. A percussion cap primer that includes the primer composition, a tertiary explosive composition, and a cup is also disclosed, as are ordnance devices including the primer composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.