Acidic plating bath and additives for electrodeposition of bright tin
US4061547A · kind A · utility
7Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1976 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Jul 21, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An aqueous acid tin electroplating bath contains as a brightening agent compounds having the formula: ##STR1## where O is oxygen and A is selected from the class consisting of hydrogen, hydroxy alkyl, polyalkoxy, and 3-sulfopropyl, certain emulsifying agents and certain synergistically acting carboxylic acids, amides and esters to give extremely bright electrodeposits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.