Aqueous suspensions for surface activation of nonconductors for electroless plating
Electroless plating process employing non-noble metal hydrous oxide catalyst
Method of preparation and use of electroless plating catalysts
Dispersions for activating non-conductors for electroless plating Patent #: 4282271
ApplicationNo. 06/182124 filed on 08/28/1980
US Classes:427/98.1, Activating or catalyst pretreatment106/1.11, Sensitizing composition427/305, Nickel, copper, cobalt, or chromium coating427/306, Organic base427/307, Etching, swelling, or dissolving out part of the base427/99.1Activating or catalyst pretreatment
ExaminersPrimary: Kendall, Ralph S.
International ClassesH05K 3/38 (20060101)
C23C 18/20 (20060101)
C23C 18/28 (20060101)
H05K 3/18 (20060101)
AbstractMetallic surfaces are imparted to non-conductive or dielectric substrates by an electroless (chemical) coating process comprised of coating the surface of the substrate with colloids of catalytic non-precious metals wherein the metals are either part of an alloy or in the elemental state or a compound and wherein the colloidal suspension further comprises antioxidant as to minimize the surface oxidation of the colloids and are further admixed in a manner resulting in good colloidal stability.