Patent · US Expired

Method for the preparation of additives in organo-aluminum electrolyte media

US4144140A · kind A · utility

4Cited by

1References

1Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Richard Dotzer · Nuremberg, DE
Hans Hauschildt · Erlangen, DE
Enno Todt, deceased

Key dates

Filing date	Jan 27, 1978
Grant date	Mar 13, 1979
Priority date	—
Expiry date	Jan 27, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F5/066
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention concerns a method for the preparation of additives for influencing the electrocrystalline growth in aprotic oxygen- and water-free organo-aluminum electrolyte media. A compound which contains a sulfonimide or sulfonamide group as the reactable group, preferably, N-benzoylbenzenesulfonimide, optionally in the presence of an inert organic solvent, is reacted with at least one organoaluminum compound of the general formula AlR.sub.3, where R is an alkyl radical, in the ratio of 1:1 to 1:6. The additives obtained furnish a bright aluminum coating on metals and conductive materials in direct electrodeposition.

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