Patent · US Active

Pyrophosphate-containing bath for cyanide-free deposition of copper-tin alloys

US9399824B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

Atotech Deutschland GmbH & Co. KG · DE

Inventors

Philip Hartmann · Berlin, DE
Klaus Schulz · Berlin, DE
Lars Kohlmann · Berlin, DE
Heiko Brunner · Berlin, DE

Key dates

Filing date	Dec 9, 2013
Grant date	Jul 26, 2016
Priority date	—
Expiry date	Jun 30, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D3/60
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A pyrophosphate-containing bath for the cyanide-free deposition of copper alloys on substrate surfaces, comprising a reaction product of a secondary monoamine with a diglycidyl ether, is described. The electrolyte bath is suitable for the galvanic deposition of glossy white, even and uniform copper-tin alloy coatings.

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