Conditioning of caprolactam polymers for electroless plating
AssigneeCrown City Plating Co.
InventorsDavid A. Dillard, Eileen Maguire, Lawrence P. Donovan
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Abstract
Caprolactam polymeric substrates are conditioned for electroless plating by etching with an aqueous solution of organic acid containing from 2 to 4 carbon atoms, preferably an acetic acid compound, such as trichloroacetic acid.
Claims13
A process for etching the surface of a caprolactam polymer substrate for electroless plating which comprises etching the caprolactam substrate with an aqueous organic acid etch solution comprising at least one organic acid compound containing 2 to 4 carbon atoms in the molecule and soluble in a concentration of at least about 3 percent by weight of solution and present in a concentration sufficient to render the caprolactam substrate uniformly and directly receptive to a metal electroless plating catalyst and depositing a metal electroless plating catalyst on the etched caprolactam polymer substrate.
A process for etching the surface of a caprolactam polymer substrate for electroless plating which comprises contacting the caprolactam polymer substrate with an aqueous organic acid etching solution comprising at least one acetic acid compound having the formula:
- ##STR3## wherein each X is independently selected from the group consisting of hydrogen, hydroxyl and halogen and in which the acetic acid compound is present in a concentration sufficient to render the caprolactam substrate uniormly and directly receptive to a metal electroless plating catalyst and depositing a metal electroless plating catalyst on the etched caprolactam polymer substrate.
A process for etching the surface of caprolactam polymer substrates for electroless plating which comprises contacting the caprolactam polymer substrate with an aqueous organic acid etch solution of trichloroacetic acid in which the trichloroacetic acid is present in a concentration of from about 5 percent by weight to solution saturation for a time of from about 10 seconds to 15 minutes to render the caprolactam polymer substrate uniformly and directly receptive to a metal electroless plating catalyst and depositing a metal electroless plating catalyst on the etched caprolactam polymer substrate.
Dependencies are inferred from the claim text.