Acid bright zinc plating
US4444630A · kind A · utility
5Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1981 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Nov 30, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Acid electroplating baths for bright zinc plating containing a zinc salt, ammonium chloride and bath additives which include a carrier component comprising an alkyl substituted ammonium propoxylate salt, preferably a trialkylammonium propoxylate salt, and a lower molecular weight alkyl substituted naphthalene sulfonic acid, or bath soluble salt thereof, in combination with other brighteners and grain refiners for providing bright, ductile, fine grained, adherent deposits over a broad current density range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.