Metal surface treatment composition
US7645393B2 · kind B2 · utility
1Cited by
9References
47Claims
0Family size
Inventors
Key dates
| Filing date | Apr 27, 2007 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | May 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/124
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process is described for treating metal surfaces with roughening compositions that use poly(ethyleneamino propionitrile) polymer as an additive in the composition to improve adhesion of polymeric materials to the metal surfaces and to improve peel strength for thermal stability. The polymer of the invention may be added to compositions containing for example, cupric chloride and hydrochloric acid and is also usable in compositions containing an oxidizer/acid/azole mixture. Other additives, such as adiponitrile may also be beneficially added to compositions of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.