Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1977-10-11
1980-03-11
Hayes, Lorenzo B.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
427165, 427168, 4274431, C23C 302
Patent
active
041926862
ABSTRACT:
Potentially explosive mixtures which can form as a result of accidental contact between a concentrated aqueous solution of ammoniacal silver salt and a concentrated solution of a strong alkali are inhibited in an improved multi-part system for electroless deposition of silver on an activated surface by simultaneous admixture of the diluted parts thereupon. Accordingly, an improved method for inhibiting formation of explosive conditions and compounds in a mixture formed by contacting concentrated aqueous ammoniacal silver salt and a concentrated solution of alkali is provided, whereby an effective amount of an explosion inhibitor is provided either in combination with the ammoniacal silver salt, in which case sufficient extraneous ammonium ions are provided to stabilize the explosion inhibitor, or in the strong alkali, or a portion of the explosion inhibitor is provided in each of said ammoniacal silver salt and strong alkali. Conventional reducers for ammoniacal silver salt can be utilized together with said explosion inhibitor.
REFERENCES:
patent: 3983266 (1976-09-01), Bahls
Hayes Lorenzo B.
London Laboratories Limited Co.
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