Carbonylic halides as activators for phototropic compositions
US4552830A · kind A · utility
20Cited by
15References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1983 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Nov 25, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Compositions containing a polymerizable, curable or crosslinkable component, a photoinitiator, a colorformer capable of changing color upon contact with a suitable activator and a latent activator containing an organic halide will become insoluble and change color under the influence of actinic radiation. The organic halide is a carbonylic compound such as an aliphatic or cycloaliphatic ketone or an ester or amide of a dicarboxylic acid. The compositions are useful to make resists used in the electronics industry to manufacture printed circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.