Catalytic process and systems

Details Catalytic process and systems Catalytic process and systems

1987-12-02

1989-12-19

Beck, Shrive

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 96, 427 98, B05D 512

Patent

active

048882097

ABSTRACT:
A process is provided for conducting or catalyzing a chemical reaction on a surface by depositing on the surface an adherent monolayer of positively charged polymer particles containing an active agent distributed throughout the polymer and contacting the deposited adherent monolayer with a suitable reactant. The positively charged polymer particles have diameters of less than about 3 micrometers and preferably less than 1 micrometer. The polymer particles are suspended in water to form an aqueous colloidal dispersion. The dispersion is useful as a stable catalyst system and particularly useful for complete electroless deposition of a conductive metal on printed circuit board surfaces and the walls of throughholes formed therein.

REFERENCES:
patent: 4188415 (1980-02-01), Takahashi
patent: 4252677 (1981-02-01), Smith
patent: 4317856 (1982-03-01), Huthwelker
patent: 4478883 (1984-10-01), Bupp
patent: 4719145 (1988-01-01), Neely

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