Adhesion of electroless coatings to resinous articles by treatment with permanganate
US5229169A · kind A · utility
16Cited by
12References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/381
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The adhesion of metal coatings deposited by electroless deposition on polycarbonate-addition polymer substrates, especially polycarbonate-ABS substrates, containing up to about 85% (by weight) polycarbonate is improved by first contacting the substrate with an alkali metal hydroxide solution for about 1-2 minutes, followed by an alkaline permanganate solution and a reducing agent to remove any manganese residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.