Back to results
US 2023/0357932 A1Published application
Method for metallizing a non-metallic substrate and pre-treatment composition
AssigneeAtotech Deutschland GmbH
InventorsBrigitte DYRBUSCH, Franziska FINN, Carl Christian FELS
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for metallizing a non-metallic substrate, the method comprising the steps (A) to (C), wherein step (A) is a pre-treatment step for etching and step (C) the metallization step. In step (A) a pre-treatment composition is utilized comprising individual manganese (II), (III), and (IV) species. The present invention furthermore relates to a specific pre-treatment composition.
Claims19
A method for metallizing a non-metallic substrate, the method comprising the steps:
- (A) contacting the non-metallic substrate with a pre-treatment composition such that a pre-treated substrate is obtained,
- wherein the pre-treatment composition comprises:
- (A-a) individual manganese (II), (III), and (IV) species,
- (B) contacting the pre-treated substrate with an activation composition such that an activated substrate is obtained, and
- (C) contacting the activated substrate with one or more than one metalizing composition such that a metalized substrate is obtained,
- with the proviso that
- in the pre-treatment composition, the total concentration of manganese (IV) species is higher than the combined concentration of manganese (II) and (III) species,
- an electrical current is applied to the pre-treatment composition such that manganese (II) species are oxidized to manganese (III) species, and
- in step (A) contacting said substrate with manganese species is carried out in a single step.
6 more elements
A pre-treatment composition comprising
- (A-a) Mn(II) ions, Mn(III) ions, and colloidal manganese (IV) species,
- (A-b) one, two or more than two acids,
- (A-c) silver ions,
- wherein the pre-treatment composition has
- a density in a range from 1.50 g/cm3 to 1.90 g/cm3, referenced to a temperature of 25° C., and
- an absorbance in a range from 1.1 to 2.1, referenced to a wavelength of 400 nm and a path length of 1 cm,
- with the proviso that the pre-treatment composition
- is substantially free of methane sulfonic acid, salts thereof, and chloride ions,
- is substantially free of permanganate ions.
6 more elements
Dependencies are inferred from the claim text.