Photopolymerization process employing compounds containing acryloyl group and anthryl group
US4413052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1982 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Mar 25, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/2022
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a three stage process, a layer of a liquid composition containing a compound (A) having in the same molecule both at least one (meth)acryloyl group and at least one anthryl group is exposed to actinic radiation so that the layer solidifies due to photopolymerization of (A) through the (meth)acryloyl group(s), remaining, however, further photocrosslinkable. When desired, the solidified layer is exposed, as through a negative, to a substantially greater amount of actinic radiation, the parts so further exposed becoming more highly photocrosslinked through the anthryl group(s) and hence insoluble. An image is produced which can be developed by means of suitable solvents. Examples of (A) include 3-(acryloyloxy)-2-hydroxypropyl anthracene-9-carboxylate and its methacryloyl homologue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.