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US 10,377,947 B2Granted
Composition and process for metallizing nonconductive plastic surfaces
AssigneeAtotech Deutschland GmbH
InventorsHermann Middeke, Steve Schneider, Carl Christian Fels
Life of this patent
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Abstract
The present invention relates to a process for metallizing electrically nonconductive plastic surfaces of articles using the etching solution. The etching solution is based on a stabilized acidic permanganate solution. After the treatment with the etching solution, the articles can be metallized.
Claims14
Process for etching electrically nonconductive plastic surfaces of articles, comprising the process step of:
- A) treating the plastic surface with at least one etching solution for treating nonconductive plastic surfaces, the etching solution comprising
- (i) at least one acid,
- (ii) at least one permanganate salt selected from alkali metal permanganates and earth alkali metal permanganates, and
- (iii) at least one source for a metal ion, wherein the metal of the metal ion is selected from titanium, zirconium, niobium, molybdenum, ruthenium, rhodium, nickel, copper, silver, zinc and cadmium,
- characterized in that the molar ratio of permanganate ions according to (ii) to metal ions according to (iii) ranges from 8.75:1 to 40:1.
2 more elements
Process for metallizing electrically nonconductive plastic surfaces of articles, comprising the process steps of:
- A) treating the plastic surface with at least one etching solution for treating nonconductive plastic surfaces, the etching solution comprising
- (i) at least one acid,
- (ii) at least one permanganate salt selected from alkali metal permanganates and earth alkali metal permanganates, and
- (iii) at least one source for a metal ion, wherein the metal of the metal ion is selected from titanium, zirconium, niobium, molybdenum, ruthenium, rhodium, nickel, copper, silver, zinc and cadmium, and
- B) metallizing the plastic surface with a metallizing solution,
- characterized in that the molar ratio of permanganate ions according to (ii) to metal ions according to (iii) ranges from 8.75:1 to 40:1.
3 more elements
Dependencies are inferred from the claim text.