Nickel-zinc dust-iron-nickel powder pigment system
US4455167A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1983 |
| Grant date | Jun 19, 1984 |
| Priority date | — |
| Expiry date | Jul 5, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A pigment system for electronic and electromagnetic shielding coatings including in percent by weight about 30% to about 70% of a nickel powder produced by decomposition of nickel carbonyl under conditions to provide a powder having a chain-like structure of irregularly shaped particles with an average particle size in the range of about 2 to 4 micrometers (um) and a specific surface area of at least about 0.5 m.sup.2 /g, about 20% to about 60% zinc dust and up to about 40% of an iron-nickel powder produced by codeposition from nickel and iron carbonyl with the proviso that the percentage of nickel powder plus the percentage of nickel-iron powder must be in excess of about 45%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.