The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 1977
Filed:
May. 02, 1975
Warren R Doty, Royal Oak, MI (US);
Timothy J Kinney, Berkley, MI (US);
Oxy Metal Industries Corporation, Warren, MI (US);
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.