Light-sensitive compositions with 3-substituted coumarin compounds as spectral sensitizers
US4147552A · kind A · utility
48Cited by
26References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1977 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/114
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
3-Substituted coumarins are efficient sensitizers for light-sensitive unsaturated materials such as unsaturated vesiculators which release a gas upon exposure to radiation, unsaturated monomers and photocrosslinkable unsaturated polymers, and azides such as photocrosslinkable polymeric azides used in photomechanical resists and lithographic plates. Water soluble derivatives can be used for aqueous coatable or aqueous processable systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.