Benzimidazole derivative and composition for treating copper and copper alloy surfaces comprising the same
US5476947A · kind A · utility
9Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1994 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | May 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/282
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A novel benzimidazole derivative is disclosed. The benzimidazole derivative is represented by the following formula (I), ##STR1## wherein R.sup.1 is a hydrogen atom, a lower alkyl group, or a halogen atom; R.sup.2 is a hydrogen atom or a lower alkyl group; R.sup.3 is an alkylene group with 1 to 18 carbon atoms; and n and m are integers from 0 to 3. The compound has an excellent rust preventing effect and can be used as a component of a composition for the treatment of surfaces of copper and copper alloys comprising the benzimidazole derivative which is particularly useful in preventing rust in printed-wiring boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.