Alkaline bright zinc plating and additive therefor
US4081336A · kind A · utility
11Cited by
6References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1977 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Apr 7, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An alkaline, electroplating bath for bright zinc plating comprising a heterocyclic nitrogen-containing compound such as, for example, nicotinic acid, which has been alkylated with a condensate of a difunctional halohydrin such as, for example, epichlorohydrin, and a hydroxy aryl compound such as, for example, vanillin, in admixture with certain polyethylenepolyamines or quaternary salts thereof, which bath is capable of producing bright, fine grained zinc deposits over a broad current density range both in the presence and absence of cyanides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.