Patent · US Expired

Etching medium and process for the correction of chromed gravure cylinders

US4308091A · kind A · utility

8Cited by

1References

8Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Dieter Schmitt · Sandhausen, DE
Wilhelm Baumer

Key dates

Filing date	Aug 20, 1980
Grant date	Dec 29, 1981
Priority date	—
Expiry date	Aug 20, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23F1/26
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

An etching medium for chromed surfaces, comprises amounts of aluminum chloride, hydrochloric acid and an inorganic reducing agent, effective for etching a chromed surface. This medium is particularly advantageous when used for the correction of chromed gravure cylinders.

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