Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1985-02-26
1988-07-12
Yarbrough, Amelia B.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 123, 106 126, 106480, 252518, 427 96, 427101, 4271263, 524413, 524435, 524555, C09D 1110
Patent
active
047567562
ABSTRACT:
Thick-layer hybrid electronic printed circuits are formed by printing predetermined circuit pattern onto an insulating substrate by deposition of predetermined ink pattern thereupon, advantageously by silk-screening or masking, and thence baking said ink circuit pattern, and repeating the deposition/baking steps as required, the subject forming process featuring use of an insulating ink comprising a non-conductive metallic oxide extender, desirably cuprous oxide, which ink is thus either potentially conductive or potentially resistive, and the development of such conductivity or resistivity, after baking, by treating the ink pattern with a reducing agent, desirably a borohydride, as to readily and quantitatively convert said metal oxide into a conducting metal.
REFERENCES:
patent: 3226256 (1965-12-01), Schneble, Jr. et al.
patent: 3451813 (1969-06-01), Kinney et al.
patent: 3776769 (1973-12-01), Buck et al.
Derwent Abstract, Accession No. 81-06663D/05, Japanese Pat. No. J55151073, May 15, 1979.
Rhone-Poulenc Specialites Chimiques
Yarbrough Amelia B.
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