Method for use of preflux, printed wiring board, and method for production thereof
US5478607A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 8, 1992 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | May 8, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31681
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for the production of a printed wiring board according to this invention includes applying a preflux represented by the following general formula (1): ##STR1## (wherein R.sub.1 stands of H or an alkyl group of one to 17 carbon atoms, R.sub.2 for H or an alkyl group of one to six carbon atoms, and n for an integer in the range between 0 and 3) or the following general formula (2): ##STR2## (wherein R.sub.3 stands for H or an alkyl group of one to six carbon atoms, R.sub.4 for H or an alkyl group of one to six carbon atoms, R.sub.5 for an alkyl group of zero to seven carbon atoms, and n for an integer in the range between 0 and 3) to a printed wiring board on which circuits have been formed and then performing an oxidizing treatment on the printed wiring board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.