Brightener additive and bath for alkaline cyanide-free zinc electroplating
US6830674B2 · kind B2 · utility
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8References
22Claims
0Family size
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Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Nov 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An aqueous alkaline non-cyanide zinc electroplating bath containing zinc ions for producing bright electrodeposits of zinc and a brightening agent comprising a polymeric quaternary amine and a reducing sugar, and a compound that forms a reducing sugar upon hydrolysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.