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US 6,582,582 B2Granted
Electroplating composition and process
OwnerDonald Beckinginventor
Life of this patent
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Abstract
An electroplating bath is disclosed that is particularly suited to the electrodeposition of tin, zinc and alloys of the foregoing in a smooth and bright electrodeposit. The disclosed electroplating bath comprises propanedioic acid, diethyl ester, polymer with N-(3-aminopropyl)-1,3-propanediamine, N-(2-carboxy benzoyl) as a brightener additive. In addition, the electroplating bath may also comprise carboxylic acids, ammonium salts, aldehyde compounds and a variety of co-brighteners.
Claims32
An electroplating bath comprising a brightener additive with the following structure:
- wherein X is an integer from 3 to 6.
An electroplating bath comprising:
- a). metal ions selected from the group consisting of zinc ions, stannous tin ions, and combinations of the foregoing:
- b). carboxylic acid;
- c). an aldehyde compound;
- and
- d). a brightener additive with the following structure:
- wherein X is an integer from 3 to 6.
3 more elements
An electroplating bath comprising:
- a). metal ions selected from the group consisting of zinc ions, stannous tin ions, and combinations of the foregoing;
- b). carboxylic acid;
- c). an aldehyde compound;
- and
- d). a polymer of propanedioic acid, diethyl ester with N-(3-aminopropyl)-1,3-propanediamine, N-(2-carboxybenzoyl).
2 more elements
Dependencies are inferred from the claim text.