Photopolymerizable screen printing inks for permanent coatings prepared from aryloxyalkyl compositions
US4003877A · kind A · utility
24Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1974 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | May 24, 1994 |
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.