Bright zinc electroplating bath and method
US4218292A · kind A · utility
2Cited by
2References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1979 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Mar 22, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An aqueous acidic electroplating bath for the deposition of zinc is provided which comprises zinc ions in an amount sufficient to deposit zinc metal on a substrate, chloride ions in an amount sufficient to impart electrical conductivity to said bath, boric acid in an amount sufficient to buffer said bath to the desired pH, and an effective amount of at least one brightener selected from the group consisting of (i) condensation products of aromatic aldehydes with amides and (ii) condensation products of aromatic aldehydes with urea or substituted ureas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.