High speed tin plating process
US8197663B2 · kind B2 · utility
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17References
41Claims
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Key dates
| Filing date | Dec 8, 2006 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D5/505
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods for the electrolytic preparation of tin coated metals are disclosed. Organic polybasic acids, such as methanedisulfonic acid [CH2(SO3H)2], 1,3-acetonedisulfonic acid [CO(CH2SO3H)2], anhydrides, and their water soluble salts, and mixtures thereof may be used as the electrolyte in the plating process or as the flux in the reflow process. Acetone, gamma-butyrolactone, or a mixture thereof, may be applied to a tin plated surface, either before or after reflow. The methods of the invention produce plated material that is free of blue haze.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.