Metal plated or platable article

• US 3,956,535 A
• Filed: 01/30/1974
• Issued: 05/11/1976
• Est. Priority Date: 01/30/1974
• Status: Expired due to Term

• Current Assignee: RCA Corporation
• Original Assignee: RCA Corporation
• Inventors: Lozier, Gerald Scott
• Primary Examiner(s): Weiffenbach, Cameron K.
• Assistant Examiner(s): Wolfe, Jr., Charles R.
• Application Number:
  US05/437,961
• Time in Patent Office: 832 Days
• Field of Search: 117/71 R, 117/130 E, 117/72, 117/138.8 A, 117/47 A, 427/302, 427/305, 427/306, 427/404, 427/419
• US Class Current: 427/305
• CPC Class Codes: C23C 18/208 with use of metal first
• CPC Class Codes: C23C 18/30 Activating or accelerating or sensitising with palladium or other noble metal
• CPC Class Codes: C23C 18/34 using reducing agents
• CPC Class Codes: C23C 18/40 using reducing agents
• CPC Class Codes: H05K 3/181 by electroless plating adhesives therefor H05K3/387

Abstract

An article comprising a substrate body having a surface coated with a film of a resin having incorporated therein a hydrolyzed metal complex which has adsorbed thereon a metal or metal ion which is a catalyst for the deposition of a metal from an autocatalytic type metal plating bath. The article may also include a film of plated metal.

Claims

1. An article of manufacture comprising a body having a surface comprising a resin, said resin having incorporated therein the hydrolysis product of a hydrolyzable metal selected from the group consisting of titanium, aluminum, and zirconium, said hydrolysis product having adsorbed thereon either a metal or metal ion, said adsorbed metal or metal ion being a catalyst for the autocatalytic deposition of a metal from a solution containing salt of nickel or copper, a reducing agent, a chelating agent and a pH-adjusting agent.

2. An article according to claim 1 in which said substrate body surface comprises a resin which is hydrophobic in nature.

3. An article according to claim 2 in which said hydrophobic resin is a polytetrafluoroethylene.

4. An article according to claim 1 in which said hydrolyzable metal is titanium.

5. An article according to claim 1 in which said hydrolyzable metal is aluminum.

6. An article according to claim 1 in which said adsorbed metal or metal ion is silver.

7. An article according to claim 1 in which said adsorbed metal or metal ion is palladium.

8. An article of manufacture comprising a substrate body having a surface comprising a resin, said resin having incorporated therein the hydrolysis product of a hydrolyzable metal, selected from the group consisting of titanium, aluminum and zirconium, said hydrolysis product having adsorbed thereon a metal which is a catalyst for the autocatalytic deposition of nickel or copper from a solution containing a salt of nickel or copper, a reducing agent, a chelating agent and a pH adjusting agent, and a film of the deposited metal adhered to the catalyzed surface.

9. An article according to claim 8 in which the deposited metal is copper.

10. An article according to claim 8 in which the deposited metal is nickel.

11. An article according to claim 8 in which said substrate body surface comprises a hydrophobic resin.

12. A method of electrolessly plating a non-metallic body with nickel or copper comprising:

applying to said body a solution containing a resin binder, a metal compound that is hydrolyzable to form an oxide-hydroxide complex, and a volatile solvent for said resin binder and said metal compound capable of wetting the surface of said body,

evaporating said solvent to form a film on said body,

hydrolyzing said hydrolyzable compound,

rinsing the film containing the hydrolyzed compound,

applying to said film a solution of a metal compound wherein the metal is one which is catalytic to electroless deposition of nickel or copper, in order to adsorb metal ions from said compound on said film,

rinsing the catalytic surface, and

treating the catalytic surface with an electroless plating bath comprising a salt of nickel or copper, a reducing agent for said salt, a chelating agent and a pH adjusting agent.

13. A method according to claim 12 in which said body is composed of a hydrophobic synthetic resin.

14. A method according to claim 12 in which said hydrolyzable metal compound is a titanium compound.

15. A method according to claim 14 in which said metal ion which is adsorbed is silver or palladium.

16. A method according to claim 12 in which the resin film containing the hydrolyzed compound is treated with a solution of a reducing agent after the film has been treated with the catalytic metal and before treating the catalytic surface with the plating bath.