Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1984-09-28
1986-09-09
Smith, John D.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
174 685, 427 98, 427259, 428901, H05K 318, C23C 1828
Patent
active
046109102
ABSTRACT:
A printed circuit board comprising an insulating board deposited with a catalyst having reactivity against electroless plating deposition, a resist for electroless plating provided on the insulating board excepting the part where a circuit is to be formed and a circuit formed by electroless plating, wherein the resist for electroless plating contains a coupling agent having a function of preventing the catalyst from ionizing. A process for producing the printed circuit board in which the insulating board surface excepting the part where a circuit is to be formed is covered with a resist for electroless plating containing a coupling agent having a function of preventing the catalyst from ionizing. Use of said resist for electroless plating can prevent drop of insulation resistance of the insulating board after moisture absorption.
REFERENCES:
patent: 3443988 (1969-05-01), McCormack
patent: 3799816 (1974-03-01), Schneble
patent: 4100037 (1978-07-01), Baron
patent: 4151313 (1979-04-01), Wajima
patent: 4293592 (1981-10-01), Morishita
patent: 4430154 (1984-02-01), Stahl
patent: 4486466 (1984-12-01), Leech
patent: 4537799 (1985-08-01), Dorey
Feldstein, "Selective Electroless Plating Techniques: A Survey" Plating, Aug. 1970.
Akahoshi Haruo
Kawakubo Shoji
Kawamoto Mineo
Matsuda Yoichi
Matsunaga Makoto
Hitachi , Ltd.
Smith John D.
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