Method for treating plastic substrates prior to plating

Details Method for treating plastic substrates prior to plating Method for treating plastic substrates prior to plating

1975-05-02

1977-07-12

Van Horn, Charles E.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

427306, 427307, H01B 318

Patent

active

040352277

ABSTRACT:
The present invention is directed to a process and composition for accelerating the activation of a polymeric surface prior to the electroless plating thereof, wherein there is employed a solution comprising a relatively dilute inorganic acid and a metal salt desirably selected from the group consisting of nickel, cobalt and ruthenium. There may also be employed a compound cabable or ionizing to produce a source of fluoride ions. By so proceeding, microscopic cavities in the polymeric substrate are thoroughly cleansed of residual tin ions which remain subsequent to rinsing of the polymeric body following the conventional activation step employing an acidic solution of pollodium chloride and stannous chloride. The removal of palladium ions, which have a catalytic effect in the electroless plating operation, is minimized by the composition and process of this invention, and further, in addition to other advantages, there is achieved relatively low and uniform values of part resistance and contact resistance.

REFERENCES:
patent: 3011920 (1961-12-01), Shipley
patent: 3471376 (1969-10-01), Saubestre et al.
patent: 3480523 (1969-11-01), Tyrrell
patent: 3669851 (1972-06-01), Garvey
patent: 3790400 (1974-02-01), Kuzmik
patent: 3790454 (1974-02-01), Henderson et al.
patent: 3873357 (1975-03-01), Lando
patent: 3901773 (1975-08-01), Ludwig
patent: 3982054 (1976-09-01), Feldstein
patent: 3993801 (1976-11-01), Feldstein
patent: 3993848 (1976-11-01), Feldstein

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