Processes and products for making articles for electroless plating

US3993802A · kind A · utility

Assignee

• Photocircuits Division of Kollmorgen Corp. · US

Inventors

• Joseph Polichette · South Farmingdale, US
• Edward J. Leech · Oyster Bay, US
• Francis J. Nuzzi · Freeport, US

Key dates

• Filing date: Jul 11, 1974
• Grant date: Nov 23, 1976
• Expiry date: Jul 11, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24999
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Sensitizing processes and the resulting new articles of manufacture, suitable for the production of metallized bodies, such as printed circuits, dials, nameplates, metallized plastics, glass, ceramics and the like, comprising bases coated with a halide containing aqueous sensitizing solution of pH 1.5-4.0 that deposits a layer of copper, nickel, cobalt or iron salts or salt compositions, which on exposure to radiant energy, such as heat, light, etc., is converted to a layer of metal nuclei which is non-conductive, but which is capable of catalyzing the deposition of metal onto the base from an electroless metal deposition solution in contact with the metal nuclei.