| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10239238 | Applied Catalysis A: General | 2005 | 6 Pages |
Abstract
UV initiated cationic photo-curing is commonly carried out in the presence of photo-sensitive onium salts as acid generators. The performance of this class of compounds can be improved by addition of a catalyst (acid) precursor (acid amplifier, AA), prone to acid catalyzed decomposition (also in an autocatalytic sequence). “Trisyl” or “tetrakis”-type esters of strong acids were studied as potential candidates for such a photo-curing purpose. (PhMe2Si)(Me3Si)2CSiMe2OSO2CF3 and [(p-MeC6H4O2SO)Me2Si]4C were found to be the most promising systems. They are more compatible with silicone materials than currently used AAs and can be embedded in the cured resin, thus limiting the post-curing evolution of low molecular weight photolytic decomposition products. They can additionally improve thermal stability of the resin.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Anna Kowalewska, WÅodzimierz A. StaÅczyk, Richard Eckberg,