Acid bath for electrodeposition of glossy gold and gold alloy layers and a gloss additive for same
The invention provides an acid bath for the electrodeposition of glossy gold and gold alloy layers and a gloss additive for same. The invention provides an acid bath for the electrodeposition of glossy gold and gold alloy layers and a gloss additive for same.By using compounds of the formula Iin whi...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
09.11.2004
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| Online Access | Get full text |
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| Summary: | The invention provides an acid bath for the electrodeposition of glossy gold and gold alloy layers and a gloss additive for same.
The invention provides an acid bath for the electrodeposition of glossy gold and gold alloy layers and a gloss additive for same.By using compounds of the formula Iin whichm is the number 3 or 4 andR represents a straight-chain or branched or cyclic alkyl group with up to 20 carbon atoms and, in the event that m=4, also an aryl or heteroaryl group with up to 10 carbon atoms, which may be optionally substituted once or several times with straight-chain or branched alkyl groups with 1 to 14 carbon atoms,as a further gloss additive, the current density/working range is extended with a small negative effect when the pH is changed and the current efficiency and deposition performance is increased. |
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