Contrast colorant for photopolymerizable compositions
US4297435A · kind A · utility
11Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Aug 18, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Stable print-out dye systems are provided for photopolymerizable compositions, finding particular use as photoresists. The dye compositions comprise a triarylmethane leuco dye in combination with a high-boiling, relatively thermally-insensitive polyhalo alicyclic compound having at least five bromines. The print-out dye system is incorporated with an addition polymerizable composition, a light-sensitive initiator, and minor amounts of other additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.