Process for treating selected areas of a surface with solder
US4064287A · kind A · utility
37Cited by
0References
1Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 1, 1976 |
| Grant date | Dec 20, 1977 |
| Priority date | — |
| Expiry date | Jun 1, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49812
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Highly durable coatings are formed by the photopolymerization of screen printing inks containing aryloxyalkyl acrylate monomers or prepolymers, a polymerizable diluent and a free-radical initiating system, such inks having a viscosity of 5,000 to 200,000 centipoises and a thixotropic index of from 1 to 6. The photopolymerizable inks are useful for coating substrates, such as printed circuits, and serve as solder masks and resists for electroless plating, electroplating and etching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.