Oxidizing accelerator

Details Oxidizing accelerator Oxidizing accelerator

1985-03-18

1986-08-26

Smith, John D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427304, 427305, 427306, 427 97, C23C 1830

Patent

active

046082751

ABSTRACT:
A method of electroless deposition of metal on a non-conductive substrate is disclosed and comprises treating a substrate prior to electroless deposition with a catalyst composition containing a mixed tin-palladium catalyst. An improvement in metal deposition is obtained by contacting the treated substrate with an alkaline accelerator bath containing an agent which oxidizes the tin.

REFERENCES:
patent: 3011920 (1961-12-01), Shipley
patent: 3513015 (1970-05-01), Fitzpatrick
patent: 3533828 (1970-10-01), Rowe
patent: 3562038 (1971-02-01), Shipley
patent: 3632435 (1972-01-01), Eriksson
patent: 4448811 (1984-05-01), Doty
Cohen et al, "The Chemistry of Palladium-Tin Colloid Sensitizing Process", Journal of Colloid and Interface Science, vol. 55, No. 1, Apr. 1976, pp. 156-162.

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