WebPhotolatent bases: new catalysts for UV-curing of coatings. Katia Studer, T. Jung, +3 authors. N. Dogan. Published 2006. Chemistry. A new approach for the cure-on-demand … Webphotolatent NHC would have distinctive advantages compared to a thermally latent analogue: release of free NHC at ambient temperature (considering that many NHC-mediated polymerizations can be conducted without heating), higher temporal resolution in the order of seconds, and spatial resolution opening novel applications such as …
Stimuli-responsive thiol-epoxy networks with photo …
WebMay 31, 2000 · Flash photolysis of 1H-benzotriazole (1) has shown that N−N bond fission occurs within a few picoseconds of excitation (248 nm) giving 6-diazo-2,4-cyclohexadien-1-imine (2), λmax = 430 nm. Fluorescence and intersystem crossing do not compete measurably, and photodenitrogenation is a minor side reaction (<1%). The rate constant … WebJul 5, 2024 · Rossegger et al. employ a photolatent catalyst for the local activation of topological rearrangements in thermo-activated vitrimers. Vitrimers are covalent adaptable polymers networks which have recently attracted tremendous interest thanks to their unique feature of switching from a classic thermoset behaviour to a malleable plastic upon heating. pho house cape town
Molecules Free Full-Text Photochemistry of Benzotriazoles ...
WebIn contrast to previous work, the applied photolatent catalysts benefit from superior solubility properties, adequate curing characteristics in the non-activated state (the addition of a supplementary catalyst is not required) and an excellent thermal stability. The spatially controlled activation of vitrimeric properties in terms of dynamic ... Weba photolatent base is employed releasing a strong amidine-type base upon light exposure, which acts as an efficient catalyst for the thiol epoxy addition reaction. The spectral sensitivity of the photolatent base is extended to the visible light region by adding a selected photosensitizer to the resin formulation. Thus, http://radtech.org/magazinearchives/Publications/RadTechReport/jul-aug-2010/Photolatent%20Base%20Catalysts%20for%20Adhesives.pdf ttu men\u0027s basketball score