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P. Knaack, D. Bomze, I. Krossing, R. Liska:
"Progress in Cationic Photopolymerization";
Vortrag: European Coatings Show and Conference 2017, Nürnberg; 02.04.2017 - 06.04.2017; in: "European Coatings Journal 04-2017", Vincentz Network GmbH & Co. KG, Hannover (Deutschland), 04/2017 (2017), ISSN: 0930-3847; S. 102.

Progress in Cationic Photopolymerization

Patrick Knaack,1 Daniel Bomze1, Ingo Krossing2 and Robert Liska1

1 Institute of Applied Synthetic Chemistry, TU Wien,
Getreidemarkt 9, 1060 Vienna, Austria
2 Institute of Inorganic and Analytical Chemistry, University Freiburg,
Albertstr. 21, 79104 Freiburg, Germany
*e-Mail: patrick.knaack@tuwien.ac.at

The invention of a new aluminum based photo acid generator PAG, salts that are used to initiate cationic photopolymerization, is a huge achievement. Classical anions for PAGs are fluorides of antimony, arsenic, phosphor, or boron. These suffer from toxicity and hydrolysis sensitivity. The also used borates on the other hand are problematic because of their expensive synthetic route. The new aluminum based PAG replaces not only the highly toxic and/or expensive PAGs, but also shows a significantly higher reactivity (even for glycidyl-based monomers). This performance opens the floor for new applications of cationic photopolymerization. With the development of Radical Induced Cationic Frontal Polymerization (RICFP) also bubble free bulk curing of epoxy resins within minutes without oven or spacial limitations by using the liberated reaction heat becomes possible.



Dipl.-Ing. Dr.techn. Patrick Knaack, BSc
Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
E-Mail: patrick.knaack@tuwien.ac.at

Dipl.-Ing. Daniel Bomze, BSc
Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
E-Mail: daniel.bomze@tuwien.ac.at

Prof. Dr. Ingo Krossing
Institute of Inorganic and Analytical Chemistry, University Freiburg,
Albertstr. 21, 79104 Freiburg, Germany
E-Mail: krossing@uni-freiburg.de

Ao.Univ.Prof. Dipl.-Ing. Dr.techn. Robert Liska
Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
E-Mail: robert.liska@tuwien.ac.at

aluminum based photo acid generator PAG, cationic photopolymerization, Radical Induced Cationic Frontal Polymerization (RICFP)