Process for the production of printed circuit boards

US4830714A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Kirkor Sirinyan · Bensberg, DE
• Gerhard D. Wolf · Dormagen, DE
• Ulrich von Gizycki · Leverkusen, DE
• Rudolf Merten · Leverkusen, DE

Key dates

• Filing date: Apr 22, 1987
• Grant date: May 16, 1989
• Expiry date: Apr 22, 2007

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K2203/1407
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An elegant method for the production of printed circuit boards possessing good electrical and mechanical properties comprises activating baseplates with a solution of complex compounds of elements of sub-group I or VIII of the periodic table, then applying a resist layer, exposing this partially according to a resist pattern, dissolving away the covered parts of the resist layer with a solvent, and metallizing the bared parts in a wet-chemical metallization bath in the absence of a current.