Irgacure 819

Manufactured by BASF

Sourced in Japan, Germany, United States

Irgacure 819 is a photoinitiator used in the manufacturing of various laboratory equipment. It is a low-viscosity, yellow-colored liquid that initiates polymerization reactions when exposed to ultraviolet (UV) or visible light. Irgacure 819 is designed to efficiently absorb light and generate reactive species, which are essential for the curing and hardening of coatings, inks, and adhesives.

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Lab products found in correlation

19 protocols using irgacure 819

Active-Energy-Ray-Curable Composition for Pigment Dispersion

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Example 1

Cyan pigment dispersion liquid A (10.0 parts by mass), acryloyl morpholine (product name: ACMO, product of KJ Chemicals Corporation, monofunctional monomer) (15.0 parts by mass), benzyl acrylate (product name: VISCOAT #192, product of Osaka Organic Chemical Industry Ltd., monofunctional monomer) (53.5 parts by mass), 1,9-nonanediol diacrylate (product name: VISCOAT #260, product of Osaka Organic Chemical Industry Ltd., bifunctional monomer) (1.0 parts by mass), an urethane acrylate resin (product name: UV-3010B, product of The Nippon Synthetic Chemical Industry Co., Ltd., ultraviolet curing resin) (5.5 parts by mass), surfactant A (product name: BYK-3575, product of BYK Japan KK) (0.3 parts by mass), polymerization initiator A (product name: Irgacure 819, product of BASF) (6.0 parts by mass), polymerization initiator B (product name: DAROCURE TPO, product of BASF) (5.0 parts by mass), polymerization initiator C (product name: Speedcure DETX, product of Lambson) (3.5 parts by mass), and p-methoxyphenol (product of Nippon Kayaku Co., Ltd.) (0.2 parts by mass) were mixed to obtain active-energy-ray-curable composition 1.

US09969894B2. Active-energy-ray-curable composition, active-energy-ray-curable ink, composition stored container, method and apparatus for forming two-dimensional or three-dimensional image, two-dimensional or three-dimensional image, structure, and processed product (2018-05-15). None [JP], None [JP]. Inventors: Tomohiro Hirade [JP], Tsuyoshi Asami [JP].

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Synthesis of Methacrylated Cyclic Carbonates

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Methacrylated trimethylolpropane cyclic carbonate (TMPMAC, 97% technical grade) and nonfunctionalized trimethylolpropane cyclic carbonate (TMPC, 98% technical grade) were kindly prepared and provided by Cyclicor AB (Sweden) according to previous work.^{21 –23} Triethylamine (TEA) and 1-propanol were purchased from Sigma-Aldrich (USA). A versatile photoinitiator for the radical polymerization of an unsaturated monomer, Irgacure 819 (bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide), was a product of BASF (Germany). All chemicals were used without further treatment.

Zhu W., Pyo S.H., Wang P., You S., Yu C., Alido J., Liu J., Leong Y, & Chen S. (2018). Three-Dimensional Printing of Bisphenol A‑Free Polycarbonates. ACS applied materials & interfaces, 10(6), 5331-5339.

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Cyanate Ester-Based High-Tg Material

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Example 2

70 wt. % 2,2-Bis(4-cyanatophenyl)propane (Primaset BADCy from Lonza) and 30 wt. % acrylated epoxy resin (cn104z from sartomer), 0.64 wt. % Novocure-200 (available from Novoset LLC) and a photo-initiator 0.33 wt. % (Irgacure 819 from BASF) were combined and warmed to 90° C., the mixture was irradiated at 365 nm for 30 min to achieve a hard cure. This material can be post cured thermally (20 min at 150° C.) to generate a material with a high Tg 236° C.

US09873761B1. High temperature three-dimensional printing compositions (2018-01-23). NOVOSET, LLC [US]. Inventors: Sajal Das [US], Christopher N. Das [US], Patrick Shipman [US], Benjamin G. Baxter [US].

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3D-Printed Microfluidic Diffusion Chips

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Photocurable resins for stereolithography printing were developed for the microfluidic chips that have selective porous barriers within their microchannels. The resin for creating the microchannel floor, walls, and roof is based on PEG-DA-258 (Sigma Aldrich, St. Louis, MO, USA) mixed with 0.6% (w/w) Irgacure 819 (IRG, BASF Corporation, Florham Park, NJ, USA) as a photoinitiator and 0.6% (w/w) 2-isopropylthioxanthone (ITX) as a photosensitizer. The resin for the porous barrier of the 3D-printed cross-channel diffusion chip contains PEG-DA-575 (Sigma Aldrich), 0.6% IRG, and 0.6% ITX. 40% PEG-DA-700 (Sigma Aldrich) in distilled water conjugated with 0.6% IRG is used for printing the porous barrier of the 3D-printed symmetric-channel diffusion chip.

Kim Y.T., Castro K., Bhattacharjee N, & Folch A. (2018). Digital Manufacturing of Selective Porous Barriers in Microchannels Using Multi-Material Stereolithography. Micromachines, 9(3), 125.

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Fabrication of Polymer Hydrogel Scaffolds

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Polydimethylsiloxane (PDMS, Dow-Sylgard 184) was purchased from Dow Corning Corporation (Midland, MI, USA). Epoxy resin OG178 was purchased from Epoxy Technology (Billerica, MA, USA). Glycidyl methacrylate, acrylic acid, sodium acrylate, 2,2′-azobis(2-methylpropionamidine) dihydrochloride, N-N′-methylenebisacrylamide, 1-butanol, ethylene glycol, copper(II)sulfate, sodium perchlorate, ethylenediaminetetraacetic acid, potassium hydroxide and hydrochloric acid were purchased from Sigma Aldrich. Irgacure 819 was purchased from BASF Corporation, Lumiprobe BDP FL NHS ester from Lumiprobe Corporation (Hallandale Beach, FL, USA), calcium chloride from J.T. Baker and copper(II)chloride from Fluorochem. All compounds and materials were used as received.

Korevaar P.A., Kaplan C.N., Grinthal A., Rust R.M, & Aizenberg J. (2020). Non-equilibrium signal integration in hydrogels. Nature Communications, 11, 386.

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Functionalized Nanoparticle Composite Synthesis

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2,2-Bis[4-(2-hydroxy-3-methacrylyloxypropoxy) phenyl] propane (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA) (Esstech, Essington, PA, USA) were purchased from Esstech (Essington, PA, USA) as a premixed monomer mixture in 70:30 mass ratio. Pentaerytritol tetrakis(3-mercaptopropionate) (PETMP), Triethyleneglycol-Divinylether (TEGDVE), 1,4-diazabicyclo[2.2.2]octane (DABCO), 3-chloro-2-chloromethyl-1-propene, potassium ethyl xanthogenate, ethylene diamine, and propylamine were purchased from Sigma-Aldrich. Irgacure 819 (bis(2,4,6-trimethylbenzoyl)- phenylphosphineoxide) was obtained from BASF. Schott glass (mean particle size 40 nm) untreated were generously donated by Evonik Silicas, and used as the inorganic fillers. Prior to implementation and as described later, these fillers were subsequently functionalized with thiol group for inclusion and copolymerization in the composite. All chemicals were used as received. The thioester-diacrylate²⁰ and 2-methylene-propane-1,3-di (thioethyl vinyl ether) (MDTVE-AFT)^{21 (link)} were synthesized using methods reported elsewhere.

Sowan N., Dobson A., Podgorski M, & Bowman C.N. (2019). Dynamic Covalent Chemistry (DCC) in Dental Restorative Materials: Implementation of a DCC-Based Adaptive Interface (AI) at the Resin-Filler Interface for Improved Performance. Dental materials : official publication of the Academy of Dental Materials, 36(1), 53-59.

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Synthesis of Silver Acrylate and Methacrylate

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The starting monomers were commercially available acrylic resins provided by Allnex (Allnex Holding S.à.r.l., Grand Rue, Luxemburg), in particular an amine functional acrylic resin (Ebecryl 7100) and pentaerythritoltriacrylate (PETIA). Bis-(2,4,6-trimethylbenzoyl)-phenylphosphine oxide was used as photo-initiator and was purchased from BASF (Ludwigshafen am Rhein, Germany) under the trade name of Irgacure 819 (Ir 819). Two AgNPs precursors, silver acrylate (AgAcr) and silver methacrylate (AgMAcr), were synthesized from silver nitrate and sodium acrylate and methacrylate, respectively. All the chemicals were high purity reactants purchased from Sigma-Aldrich (Milan, Italy).
AgAcr was synthesized by mixing at room temperature silver nitrate and sodium acrylate water solutions. The salts were mixed in stoichiometric ratio and the exchange reaction was instantaneous. The precipitated AgAcr salt was washed once in water and twice in ethanol and ultracentrifuged (Neya 16, Remi Neya, India) at 12,000 rpm for 5 min each step. AgMAcr was synthesized in the same way by using sodium methacrylate instead of sodium acrylate.

Taormina G., Sciancalepore C., Bondioli F, & Messori M. (2018). Special Resins for Stereolithography: In Situ Generation of Silver Nanoparticles. Polymers, 10(2), 212.

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Thiol-Vinyl Photopolymerization Reaction

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Trimethylolpropane triacrylate (TMPTA), triethylamine (TEA) triallyl-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (TTT), 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) were purchased from Sigma-Aldrich. Divinyl sulfone (DVS) was purchased from Oakwood Chemicals. Irgacure 819 (Bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide–BPO) was obtained from BASF. Pentaerythritol tetra(3-mercaptopropionate) (PETMP) was donated by Bruno Bock. All chemicals were used as received. Tetra(2-mercaptoethyl)silane (SiTSH) was synthesized according to previously reported procedure.^{33 (link)-35 (link)} The structures of the thiol and vinyl monomers are depicted in Figure 1.

Podgórski M., Becka E., Chatani S., Claudino M, & Bowman C.N. (2015). Ester-free Thiol-X Resins: New Materials with Enhanced Mechanical Behavior and Solvent Resistance. Polymer chemistry, 6(12), 2234-2240.

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Fabrication of Photocurable Hydrogels for Biomedical Applications

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Acrylamide (Sigma-Aldrich; >98%), N,N′-methylenebis(Acrylamide) (Sigma-Aldrich; >99%), LAP (Tokyo Chemical Industry; >98%), 1-AdCA (Sigma-Aldrich; 99%), ethylene glycol (Sigma-Aldrich; >99%), 3-(trimethoxysilyl)propyl methacrylate (Sigma-Aldrich; >97%), PETA (Sigma-Aldrich; >97%), TPETA (number-average molecular weight, ~692; Sigma-Aldrich; >97%), Irgacure 819 (BASF), 7-diethylamino-3-thenoylcoumarin (J&K Scientific; 97%), 2-propanol (Carl Roth; >99.5%), and methyl isobutyl keton (MIBK; Roth; >99%) were used. All chemicals and solvents were used as received without further purification.
βCD-AAm and Ad-AAm were synthesized as described elsewhere (47 (link)). Chemicals for the synthesis are the following: β-cyclodextrin (Junsei Chemical), adamantanamine hydrochloride (FUJIFILM Wako Pure Chemical), sodium hydroxide (Nacalai Tesque), acryloyl chloride (Tokyo Chemical Industry), triethylamine (Nacalai Tesque), tetrahydrofuran (FUJIFILM Wako Pure Chemical), and dichloromethane (FUJIFILM Wako Pure Chemical).

Hippler M., Weißenbruch K., Richler K., Lemma E.D., Nakahata M., Richter B., Barner-Kowollik C., Takashima Y., Harada A., Blasco E., Wegener M., Tanaka M, & Bastmeyer M. (2020). Mechanical stimulation of single cells by reversible host-guest interactions in 3D microscaffolds. Science Advances, 6(39), eabc2648.

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Synthesis of Photopolymerizable Hydrogel

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N-isopropylacrylamide (Sigma-Aldrich, >97%), N,N′-methylenebis(acrylamide) (Sigma-Aldrich, >99%), lithium phenyl(2,4,6-trimethylbenzoyl)phosphinate (TCI Tokio Chemical Industry, >98%), ethylene glycol (Sigma-Aldrich, >99%), acryloxyethyl thiocarbamoyl Rhodamine B (Polysciences), 3-(trimethoxysilyl)propyl methacrylate (Sigma-Aldrich, >97%), pentaerythritol triacrylate (Sigma-Aldrich, >97%), Irgacure 819 (BASF), 7-diethylamino-3-thenoylcoumarin (J&K Scientific, 97%), acetone (Roth, > 99,5%), isopropanol (Roth, >99,5%), methyl isobutyl keton (Roth, >99%). All chemicals and solvents were used as received without further purification.

Hippler M., Blasco E., Qu J., Tanaka M., Barner-Kowollik C., Wegener M, & Bastmeyer M. (2019). Controlling the shape of 3D microstructures by temperature and light. Nature Communications, 10, 232.

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