Abstract: Provided are a lithium secondary battery electrolyte composition which may effectively suppress a thermal runaway phenomenon, and a lithium secondary battery having excellent electrical properties, life characteristics, and safety by applying the electrolyte composition.

Abstract: The present disclosure relates to a cyclic olefin polymer having an epoxy functional group prepared by ring-opening metathesis polymerization and method of preparing the same.

Abstract: The present disclosure relates to a polyimide precursor and flexible polyimide obtained by imidization of the polyimide precursor and having high transparency, high glass transition temperature and low coefficient of thermal expansion.

Abstract: A polyamideimide includes an asymmetric dicarboxylic acid derivative wherein, from among a cyclic group A and a cyclic group B, two substituents groups R and R? are bonded only to the cyclic group A on one side. A polymer produced by means of the present invention can have adequate solubility with respect to organic solvents, high thermal stability, a high glass transition temperature, high transparency and a low thermal expansion coefficient, and is able not only to satisfy requirements for core substrate materials of flexible displays but also to be used as a material for various soft electronic data devices.

Abstract: The present invention relates to a polyamideimide comprising an asymmetric dicarboxylic acid derivative wherein, from among a cyclic group A and a cyclic group B, two substitutents groups R and R? are bonded only to the cyclic group A on one side. A polymer produced by means of the present invention can have adequate solubility with respect to organic solvents, high thermal stability, a high glass transition temperature, high transparency and a low thermal expansion coefficient, and is able not only to satisfy requirements for core substrate materials of flexible displays but also to be used as a material for various soft electronic data devices.

Abstract: Disclosed herein is a method of preparing hyperbranched polyamidoamine particles, including: a) preparing a polyamidoamine precursor mixture from a multifunctional amine monomer and a multifunctional acrylamide monomer; and b) polymerizing the polyamidoamine precursor mixture into cross-linked hyperbranched polyamidoamine particles using reverse phase suspension polymerization. Also, hyperbranched polyamidoamine particles prepared by the method are provided, which can remove heavy metals in an aqueous solution without the need for an ultrafiltration apparatus.

Abstract: The present invention relates to a novel diamine compound, wherein two substituents R and R? are introduced asymmetrically, and a polymer thereof. The polymer may have excellent solubility in the organic solvent and allows for easy processibility after imidization, thus giving proper film maintaining superior properties, such as thermal, mechanical, and optical properties for applications in electrical, electronic, or optical materials.

Abstract: Provided is the preparation of a coil-comb block copolymer and a method for producing nanostructures formed by the copolymer. Particularly, provided is a method for producing nanostructured polymer thin films, including: preparing a coil-comb block copolymer via a controlled polymer polymerization process; forming a thin film of the block copolymer on a substrate and carrying out heat treatment to form nanostructures including vertically aligned cylindrical microstructures; and irradiating ultraviolet rays to the thin film and carrying out oxygen plasma treatment to form nanostructured polymer thin films including cylindrical pores.

Abstract: Disclosed is a passive matrix-addressable memory apparatus. The passive matrix-addressable memory apparatus comprises: a plurality of first electrode lines horizontally arranged with respect to each other; a plurality of second electrode lines disposed orthogonal to the plurality of first electrode lines to be horizontally arranged with respect to each other; a memory unit formed between the plurality of first electrode lines and the plurality of second electrode lines, and containing an electrically polarizable material exhibiting hysteresis; and a switch unit. The switch unit comprises: first electrodes of a cantilever structure respectively formed between the memory unit and the plurality of first electrode lines to be electrically connected to the plurality of first electrode lines; and second electrodes electrically connected to the memory unit to be spaced apart from the first electrodes to face the first electrodes.

Abstract: Provided is the preparation of a coil-comb block copolymer and a method for producing nanostructures formed by the copolymer. Particularly, provided is a method for producing nanostructured polymer thin films, including: preparing a coil-comb block copolymer via a controlled polymer polymerization process; forming a thin film of the block copolymer on a substrate and carrying out heat treatment to form nanostructures including vertically aligned cylindrical microstructures; and irradiating ultraviolet rays to the thin film and carrying out oxygen plasma treatment to form nanostructured polymer thin films including cylindrical pores.

Abstract: Disclosed is a passive matrix-addressable memory apparatus. The passive matrix-addressable memory apparatus comprises: a plurality of first electrode lines horizontally arranged with respect to each other; a plurality of second electrode lines disposed orthogonal to the plurality of first electrode lines to be horizontally arranged with respect to each other; a memory unit formed between the plurality of first electrode lines and the plurality of second electrode lines, and containing an electrically polarizable material exhibiting hysteresis; and a switch unit. The switch unit comprises: first electrodes of a cantilever structure respectively formed between the memory unit and the plurality of first electrode lines to be electrically connected to the plurality of first electrode lines; and second electrodes electrically connected to the memory unit to be spaced apart from the first electrodes to face the first electrodes.

Abstract: The present invention relates to an apparatus and method for a measurement of a film thickness using an improved fast Fourier transformation. The apparatus includes a light source, a light receiving unit for converging a light from the light source, a detection unit for splitting a reflection light reflected by the surface of the sample and inputted into the optical fabric through the lens, and outputted to the other side of the optical fabric based on a light intensity of each wavelength and providing a certain amount of wavelength, a conversion unit for converting a wavelength based spectrum data detected by the detection unit into an analog signal and then converting into a digital signal through a converter, a computation unit for computing the number of vibrations based on a high speed Fourier transformation, and an analyzing unit for measuring a film thickness.

Abstract: The present invention relates to an apparatus and method for a measurement of a film thickness using an improved fast Fourier transformation. The apparatus includes a light source, a light receiving unit for converging a light from the light source, a detection unit for splitting a reflection light reflected by the surface of the sample and inputted into the optical fabric through the lens, and outputted to the other side of the optical fabric based on a light intensity of each wavelength and providing a certain amount of wavelength, a conversion unit for converting a wavelength based spectrum data detected by the detection unit into an analog signal and then converting into a digital signal through a converter, a computation unit for computing the number of vibrations based on a high speed Fourier transformation, and an analyzing unit for measuring a film thickness.

Abstract: The present invention relates to a process for manufacturing polyethylene with a functional end group in the presence of metallocene catalyst and more particularly, to the process for manufacturing polyethylene with a functional end group in such a manner that a highly reactive functional group of alkyl-aluminum is easily introduced to the end of polymer via a selective chain transfer reaction in the presence of (1) metallocene catalyst represented by the following formula 1 and (2) a cocatalyst containing alkyl-aluminum compound as active ingredient.

Abstract: This invention relates to a method for determining reproduction position of a reproduction device.