Abstract: The present invention relates to a branched copolymer having a polyimide polymer block bonded to each terminal of a branched polyamide functional group, and a photosensitive resin composition including the same, a photosensitive resin film, and an optical device.

Abstract: The present application relates to a polycarbonate including a unit represented by Chemical Formula 1a; and a unit represented by Chemical Formula 1b, a composition including the same and a molded article prepared from the composition.

Abstract: A curable composition is capable of forming a thick film having excellent curing characteristics even at a relatively low temperature and is capable of securing an excellent level of thermal conductivity as well as a desired level of appropriate adhesion force while having fast curing characteristics. A battery pack to which the curable composition is applied, and a device comprising the battery pack are also provided.

Abstract: The present disclosure relates to polycarbonate a diol compound represented by Chemical Formula 1; at least one compound of compounds represented by Chemical Formulae 2 and 3; and a carbonate precursor-derived repeating unit, and a method for preparing the same.

Abstract: Provided is a method for producing a deuterated aromatic compound and a deuterated reaction composition. The method includes performing a deuterated reaction of an aromatic compound comprising one or more aromatic rings using a solution comprising the aromatic compound, heavy water, and an organic compound which can be hydrolyzed by the heavy water. The method produces a high-purity deuterated compound under relatively low temperature and pressure conditions.

Abstract: Provided is a method for producing a deuterated aromatic compound and a deuterated reaction composition. The method includes performing a deuterated reaction of an aromatic compound including one or more hydrocarbon aromatic rings using a solution comprising heavy water, an organic compound which can be hydrolyzed by the heavy water, the aromatic compound, and an organic solvent. The method has an advantage in that impurities due to hydrogen gas are not generated, the deuterium substitution rate is high, and the deuterated reaction can be performed under a lower pressure and a lower temperature.

Abstract: The present specification relates to a method for producing a deuterated aromatic compound and a deuterated reaction composition.

Abstract: The present invention provides a polyimide copolymer containing repeating units having a specific structure derived from monomers synthesized from an epoxy compound, a method for preparing the polyimide copolymer, a photosensitive resin composition, a photosensitive resin film and an optical device including the same.

Abstract: The present invention relates to a branched copolymer having a polyimide polymer block bonded to each terminal of a branched polyamide functional group, and a photosensitive resin composition including the same, a photosensitive resin film, and an optical device.