Gallic acid as a combination antioxidant, grain refiner, selective precipitant, and selective coordination ligand, in plating formulations
US5296128A · kind A · utility
10Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1993 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Feb 1, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention relates to additives for methanesulfonic acid based tin and tin alloy plating formulations. Specifically, the invention involves the use of gallic acid in the multiple roles of antioxidant, grain refiner, selective precipitant, and selective chelator in methanesulfonic acid based tin or tin alloy plating formulations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.