Electrodeposition of bright zinc utilizing aliphatic ketones
US4100040A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1977 |
| Grant date | Jul 11, 1978 |
| Priority date | — |
| Expiry date | Sep 14, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A zinc brightener additive compises a polymeric amine selected from the class consisting of a linear aliphatic amine polymer, an aminated polyepichlorohydrin, a polyethylenimine, and combinations thereof, a propylene oxide-ethylene oxide block copolymer prepared by the sequential addition of propylenene oxide followed by ethylene oxide, or vice versa, to a residue of an organic compound containing active hydrogen atoms such as propylene glycol or an amine base, and an aliphatic ketone. Additionally, an aqueous acid electroplating bath containing the polymeric amine compound in combination with the propylene oxide-ethylene oxide block copolymer and an aliphatic ketone provides bright, lustous electrodepositions of zinc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.