Patent · US Expired

Acidic zinc-plating bath

US4496439A · kind A · utility

5Cited by

1References

2Claims

0Family size

Assignee

BASF SE

Inventors

Norbert Greif · Worms, DE
Knut Oppenlaender · Ludwigshafen, DE
Albert Hettche · Heßheim, DE
Christos Vamvakaris · Kallstadt, DE

Key dates

Filing date	Dec 23, 1983
Grant date	Jan 29, 1985
Priority date	—
Expiry date	Dec 23, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D3/22
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

In an aqueous acidic plating bath for the electrolytic deposition of zinc, which contains conventional conductive salts, brighteners and surfactants, one of the surfactants is a surfactant of the formula I ##STR1## where R.sup.1 is C.sub.4 -C.sub.20 -alkyl, R.sup.2 is identical to R.sup.1 or is hydrogen, X and Y are each a radical --SO.sub.3 H, where the hydrogen atom can be replaced by an alkali metal or alkaline earth metal atom or by one equivalent of zinc and n is an integer from 5 to 50.

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