- In-situ photoinduced formation of self–assembled Ag NPs using POSS-TX as nano-photoinitiator in PEGMEA/PEGDA polymer matrix and creating self-wrinkled pattern
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Thioxanthone (TX) and its derivatives are playing an important role as photoinitiators for photopolymerizable formulations. But another significant role of the photoinitiators was recently discovered, namely, the photoreduction of metal salts to metal nanoparticles, in which mainly ketyl radicals were responsible for this process. Functionalization of Polyhedral Oligomeric Silsesquioxanes (POSS) with TX is reported here and used for simultaneous preparation of self-assembled silver nanoparticles (Ag NPs) with POSS cage and polymer matrix. Covalent attachment of POSS-TX to the polymer matrix resulted in self-assembled Ag NPs in a self-wrinkled pattern.
- Batibay, Gonul S.,Gunkara, Omer Tahir,Ocal, Nuket,Arsu, Nergis
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- POLYMERIC PHOTO ACTIVE AGENTS
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The present disclosure is drawn to polymeric photo active agents, photo curable inks containing the polymeric photo active agents, and methods of making the photo curable inks. A polymeric photo active agent can include a xanthone analog modified with a polyether chain connecting to the xanthone analog through an amide linkage.
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- WATER-BASED UV INKJET INK
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The invention describes the use of a water-based UV curable inkjet printing ink wherein the ink is basic due to the presence of a tertiary amine, allowing the complete dissolution of an acid functional photoinitiator of Formula I or Formula IA (wherein R1, R2, R3, n, q, and y are as defined herein). This combination of photoinitiator and tertiary amine allows the rapid low dosage UV curing of a water-based UV formulation using a UV LED light source.
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Paragraph 0071
(2015/12/17)
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- NEW PHOTOINITIATORS
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The present invention is related to novel photoinitiators, in particular to photoinitiators comprising amino groups within the molecule.
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Page/Page column 24-25
(2010/11/17)
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- An improved process for the production of subsituted thioxanthones
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A one-step process for the preparation of a substituted thioxanthone, such as carboxymethoxythioxanthone, in high yields and as a single isomer. The substituted aryl compound is reacted with mercaptobenzoic acid or dithiobisbenzoic acid in the presence of sulphuric acid.
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