Compositions for chemical copper plating

Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...

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427305, 427437, 106 126, C23C 302

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active

041382676

ABSTRACT:
A composition for chemical copper plating having a pH of 12 to 14 and containing a boron hydride compound serving as a reducing agent, a water-soluble copper compound and a copper complexing agent, the composition being characterized in that the copper complexing agent is at least one of hydroxyalkyl-substituted ethylenediamines represented by the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and are each unsubstituted lower alkyl or hydroxyl- and/or carboxyl-substituted lower alkyl, and at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is hydroxyl-substituted lower alkyl, and hydroxyalkyl-substituted diethylenetriamines represented by the formula ##STR2## wherein R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are the same or different and are each unsubstituted lower alkyl or hydroxyl-and/or carboxyl substituted lower alkyl, R.sub.9 is hydrogen or unsubstituted lower alkyl or hydroxyl-and/or carboxyl-substituted lower alkyl, and at least one of R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 is hydroxyl-substituted lower alkyl.

REFERENCES:
patent: 2938805 (1960-05-01), Agens
patent: 3347724 (1967-10-01), Schneble et al.
patent: 3615733 (1971-10-01), Shipley et al.
patent: 3635758 (1972-01-01), Schneble et al.
patent: 3650777 (1972-03-01), Schneble et al.
patent: 3770464 (1973-11-01), Dutkewych et al.
patent: 3959531 (1976-05-01), Schneble et al.

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