Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1979-08-13
1980-10-14
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
106 118, 204 38B, 427 97, 427 98, 427305, 427306, 428210, 428432, 428457, B32B 310, C23C 302
Patent
active
042282136
ABSTRACT:
A method of depositing a stress-free electroless copper deposit is disclosed. The method comprises contacting a catalyzed surface with a solution comprising a source of cupric ions; a reducing agent for the cupric ions; a complexing agent for the solution selected from (a) ethylenediaminetetraacetic acid, (b) a salt of (a), (c) a modified ethylenediamine acetic acid, (d) a salt of (c), and (e) a mixture of at least two of the foregoing complexing agents; a stabilizer for the solution comprising a mercury compound; and an accelerator for the solution comprising a water-soluble compound containing a cyanide radical (CN.sup.-) complexed with a metal selected from Group VIII of the Periodic Table of the Elements.
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Beckenbaugh William M.
Morton Kim L.
Robinson Ellis P.
Spivak Joel F.
Western Electric Company Inc.
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