Patent · US Active

Polyamine brightening agent

US8329019B2 · kind B2 · utility

0Cited by

11References

6Claims

0Family size

Assignee

COVENTYA GMBH · US

Inventors

William E. Eckles · Cleveland Heights, US
Thorsten Kuehler · Bielefeld, DE

Key dates

Filing date	Feb 28, 2011
Grant date	Dec 11, 2012
Priority date	—
Expiry date	Mar 10, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D3/565
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A zinc electroplating bath includes zinc ions and a brightening agent. The brightening agent is a polyamine or a mixture of polyamines that include a quaternary ammonium group.

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