Patent · US Expired

Acid plating bath and method for the electrolytic deposition of satin nickel deposits

US7361262B2 · kind B2 · utility

4Cited by

5References

14Claims

0Family size

Assignee

Atotech Deutschland GmbH & Co. KG · DE

Inventors

Wolfgang Dahms · Berlin, DE
Klaus Schulz · Berlin, DE
Thomas Moritz · Berlin, DE

Key dates

Filing date	May 15, 2003
Grant date	Apr 22, 2008
Priority date	—
Expiry date	May 15, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D3/12
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The plating bath for the deposition of satin nickel deposits according to the present invention contains at least one quarternary ammonium compound and at least one polyether, the at least one polyether having at least one strongly hydrophobic side chain. As compared to prior art plating baths, this acid plating bath has the advantage that it enables a long period of operation or heating and cooling cycles or filtration cycles, makes it possible to perform the filtration needed for continually operating the bath without using active carbon, requires a lower concentration of nickel than prior art baths to produce the satin gloss finish and has a reduced sensitivity to wetting agents that have been dragged in.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.