Nitric acid system for etching magnesium plates
US4032379A · kind A · utility
4Cited by
7References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1975 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Oct 31, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F1/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A one-step powderless high-speed process for producing photoengraved letter-press printing and pattern plates from magnesium and alloys thereof by etching such plates in a machine that directs against a surface of the plate droplets of an etching liquid comprising an aqueous solution of a strong inorganic acid and adjuvants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.