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Soybean oil containing thioxanthone (TX) moieties and/or coinitiator DBA (ESO-ATX-DBA, ESO-ATX/ESO-DBA) were synthesized by grafting 2-acitic thioxanthone (ATX) and 4-(dimetheylamino) benzoic acid (DBA) to the backbone of epoxidized soybean oil (ESO). The obtained ESO-ATX-DBA, ESO-ATX and ESO-DBA were characterized by FT–IR, 1 H NMR and UV–vis spectra, and investigated as photoinitiators by...
To develop photoinitiator systems of high performance for the negative photo-resist, we synthesized six methoxyphenylquinoxalines (MOPQs) and investigated the photopolymerization of 2,2-bis(4-(acryloxypolyethoxy)phenyl)propane (A-BPE-10) initiated by these MOPQs in the negative photo-resist. MOPQs possess suitable UV–vis maximum absorption wavelengths in the range of 349–402nm, along with high extinction...
Three kinds of copolymeric dendritic macrophotoinitiator DAB-4-TX-OC, DAB-16-TX-OC and DAB-64-TX-OC were synthesized by introducing thioxanthone (TX) and octene (OC) moieties into the periphery of dendrimer poly(propylene imine) (PPI), in order to get photoinitiators systems of high performance. The maximum of absorption (λ max ) red-shifted slightly, and the fluorescence emission intensity...
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