UV curable compositions for making improved solder mask coatings
US4849321A · kind A · utility
11Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1987 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Feb 12, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition including a mixture of UV curable urethane acrylate and a urethane diacrylate compounds provides an aqueous alkaline developable, flexible solder mask having excellent electrical insulation resistance under hydrolytic testing conditions at elevated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.