Toagosei Annual R&D Report “TREND” – Issue No. 22

ARONIX MT-3547, MT-3548 and MT-3549 are multifunctional acrylates made by transesterification for UV-curable resin and thermosetting resin formulations. They expand formulation design space for paints, UV inks, adhesives and pattern formers through low viscosity, high hardness, hydrophilicity, high hydroxyl value and high purity.

MT-3547 is a low-molecular-weight glycerol triacrylate with a high acryloyl group concentration. This low-viscosity acrylate has a viscosity of 30 mPa·s at 25°C and forms a 5H pencil-hardness film, comparable with PETTA. As a reactive diluent and urethane acrylate diluent for hard-type urethane acrylate, it reduces coating viscosity while helping maintain coating hardness and scratch resistance. It supports solvent-free coating, hard coat resin, high-hardness coating and scratch-resistant coating design. Because glycerol can be obtained from animal fats and biomass vegetable oils, this glycerol acrylate is relevant to biomass-based acrylate and carbon-neutrality strategies.

MT-3548 is an ultra-high-hydroxyl-value PETA and hydrophilic acrylate. Its hydroxyl value is about 280 mgKOH/g, with better water compatibility and a lower cured-film water contact angle than conventional PETA. These properties support water-compatible acrylate, anti-fog coating resin, resist material acrylate and multifunctional urethane acrylate development.

MT-3549 is a high-purity acrylate and low-viscosity DPHA produced without acidic catalysts such as sulfuric acid. By suppressing Michael addition and catalyst-derived impurities, this sulfuric-acid-free, low-impurity acrylate lowers viscosity from about 7,000 to 3,000 mPa·s while retaining UV curability, 3H pencil hardness and steel-wool scratch resistance. Its long-term stability and metal corrosion resistance support migration suppression in resist applications and high-durability automotive coating development. Together, these acrylate monomers can serve as thermosetting resin raw material, UV ink raw material, UV adhesive raw material, paint resin additive and acrylate for pattern-former applications.