Electroless metallization of dielectrics with alkaline stable pyrazine derivative containing catalysts
US9918389B2 · kind B2 · utility
1Cited by
2References
8Claims
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Key dates
| Filing date | Sep 4, 2014 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Sep 4, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0709
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Pyrazine derivatives which contain one or more electron donating groups on the ring are used as catalytic metal complexing agents in aqueous alkaline environments to catalyze electroless metal plating on metal clad and un-clad substrates. The catalysts are monomers and free of tin and antioxidants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.