Abstract: The present invention relates to a polyester film and a preparation method thereof. The polyester film is formed of a polyester resin having a specific content of isosorbide and diethylene glycol introduced therein, containing a low content of oligomer, and exhibiting a specific intrinsic viscosity, thereby exhibiting excellent mechanical properties, heat resistance and chemical resistance, and good heat sealability.

Abstract: The present disclosure relates to a polyester resin blend. The polyester resin blend exhibits excellent miscibility even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate, and can provide molded articles with high transparency.

Abstract: The present disclosure relates to a polyester resin blend. The polyester resin blend can provide a thick container with high transparency even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate. In addition, the resin blend can be reused by itself, and is expected to be useful for providing continuously usable plastics that have been recently attracting attention.

Abstract: The present invention provides methods for reducing amyloid beta formation and for treating diseases associated with IC the accumulation of amyloid beta, The present invention provides (1) A ? aggregation inhibition by A ? Oligomer/Fibril formation inhibition, (2) BACE-1 reduced a through ?-Amyloidogenic Processing inhibition, (3) cerebral blood flow to the increase of the cell outer A? Monomer, Oligomer & A? Fibril/Plaque reduction, (4) NO/cGMP/PKG/CREB Pathway to the activation of Neuronal cell Death inhibition and Neurogenesis, Synaptogenesis, Angiogenesis promotion, (5) DKK-1 inhibition by Wnt Signaling in the activation of synaptic plasticity recovery and A? production Positive Feedback Loop for inhibition of APP generates reduced and A? accumulation suppression, (6) Autophagy activation by cells within Toxic Mirodenafil, Sildenafil, Vardenafil, Tadalafil, Udenafil, Dasantafil, and Avanafil for the treatment of inhibition of A? Fibril/Plaque formation through removal of Soluble A? Oligomer; and a Pha

Abstract: Provided are a polyester resin having a high residual rate of isosorbide, thereby exhibiting excellent heat resistance, excellent mechanical properties such as tensile strength, Young's modulus, etc., and excellent appearance properties and transparency, and a preparation method thereof.

Abstract: Provided are a polyester resin having high heat resistance and degree of crystallinity, a preparation method thereof, and a resin molded article formed therefrom, the resin molded article having superior heat resistance and mechanical strength and maintaining high transparency.

Abstract: There is provided a heat shrinkable film comprising a polyester based copolymer capable of having an excellent shrinkage rate and being heat shrunk at a low temperature. The heat shrinkable film according to an exemplary embodiment of the present invention includes a polyester based copolymer, wherein the polyester based copolymer includes: a dicarboxylic acid-derived residue including a residue derived from an aromatic dicarboxylic acid; and a diol-derived residue including a residue derived from 4-(hydroxymethyl)cyclohexylmethyl 4?-(hydroxymethyl)cyclohexane carboxylate represented by the following Chemical Formula 1 and a residue derived from 4,4-(oxybis(methylene)bis) cyclohexane methanol represented by the following Chemical Formula 2.

Abstract: A copolycarbonate ester produced from a polymerizable composition according to the present invention can have various physical properties by being copolymerized through the melt-polycondensation of: 1,4:3,6-dianhydrohexitol and/or a diol compound other than 1,4:3,6-dianhydrohexitol; a carbonate compound; and a petroleum-based and/or bio-based diphenyl ester and/or an additional diphenyl ester compound other than the petroleum-based and/or bio-based diphenyl ester, and can thus be usefully applied to the manufacture of segmented products.

Abstract: The present invention relates to a highly bio-based polycarbonate ester and a method for producing same. The highly bio-based polycarbonate ester has a bio-based carbon content of 80% or more since the highly bio-based polycarbonate ester is obtained by copolymerization of 1,4:3,6-dianhydrohexitol, which is a bio-based monomer derived from biomass, and 1,4-cyclohexanedicarboxylate and/or terephthalate, and therefore, the highly bio-based polycarbonate ester is not only human-friendly and environmentally friendly, but also advantageous in terms of biodegradability.

Abstract: A bio-based polycarbonate ester resin is environment friendly by not containing a bisphenol, and exhibits excellent heat resistance, transparency, strength, hardness, dimensional stability and chemical resistance. Thus, the bio-based polycarbonate ester resin is suitable for use in an eyeglass frame. In addition, various colors may be painted and coated on during post-processing, a separate additive is not required during a molding process, and processing is undergone at a temperature lower than that for conventional plastic materials for an eyeglass frame, and thus manufacturing costs may be reduced.

Abstract: The present invention relates to a polylactic acid resin composition and a molded product using same. Since the polylactic acid resin composition according to the present invention has excellent environmental friendliness and biodegradability, has excellent heat resistance characteristics due to high heat deformation temperature (HDT), and may be injection molded within a commercially reasonable cycle time due to high crystallinity and crystallization rate, it is suitable for the preparation of a molded product.

Abstract: This disclosure relates to a thermo-shrinkable polyester film with excellent UV absorbance and heat resistance. According to one embodiment of the invention, provided is a thermo-shrinkable polyester film comprising a first resin layer comprising polyester resin comprising residues of dicarboxylic acid components comprising aromatic dicarboxylic acid, and residues of diol components comprising 4-(hydroxymethyl)cyclohexylmethyl 4?-(hydroxymethyl)cyclohexanecarboxylate, and 4,4-(oxybis(methylene)bis)cyclohexane methanol; and a second resin layer comprising the polyester resin and a UV absorber, formed on at least one side of the first layer.

Abstract: A polyarylene sulfide resin composition having excellent mechanical, corrosion, and haze properties, and heat resistance is disclosed. A molded article molded from the resin composition is disclosed. The resin composition prevents corrosion of a mold and deterioration in the durability of a manufactured product upon injection by effectively removing halogen-based impurities, and also has excellent mechanical, corrosion, and haze properties, and heat resistance. A molded article manufactured from the resin composition satisfies the standards required for components of a vehicle and an electric/electronic device.

Abstract: An embodiment of the present invention provides a method of preparing 2,5-furandimethylcarboxylate (FDMC), including preparing 2,5-furandimethylcarboxylate (FDMC) by subjecting a reaction mixture including 5-hydroxymethylfurfural (HMF), air, and an alcohol solvent to oxidative esterification in the presence of a gold (Au)-nanoparticle-supported catalyst, in which the gold (Au)-nanoparticle-supported catalyst includes a support and gold (Au) nanoparticles supported on the support.

Abstract: The present invention relates to a copolymerized saturated polyester resin and a coating composition containing same. Provided are a copolymerized saturated polyester resin and a coating composition having excellent hot water resistance, chemical resistance and processability when formed into a coating film, and showing excellent adhesiveness to a metal base, and thus particularly useful for coating a can and pre-coated metal (PCM).

Abstract: A method for cycloaddition of dimethyl muconate is disclosed. According to the method, a direct transferring of a solid phase trans,trans-dimehtyl muconate into a reactor pre-filled with ethylene gas increases the efficiency of the reaction and suppress side reactions resulting an improvements in yield and purity. Furthermore, the method is capable of obtaining a high yield of dimethylcyclohex-2-en-1,4-dicarboxylate at a lower cost, and therefore is also useful for the mass synthesis of dimethyl terephthalate.

Abstract: The present invention relates to a polyarylene sulfide having more improved miscibility with other polymer materials or fillers, and a method of preparing the same. At least part of end groups of the main chain of the polyarylene sulfide is carboxyl group (—COOH) or amine group (—NH2).

Abstract: A method for cycloaddition of dimethyl muconate is disclosed. According to the method, a direct transferring of a solid phase trans,trans-dimehtyl muconate into a reactor pre-filled with ethylene gas increases the efficiency of the reaction and suppress side reactions resulting an improvements in yield and purity. Furthermore, the method is capable of obtaining a high yield of dimethylcyclohex-2-en-1,4-dicarboxylate at a lower cost, and therefore is also useful for the mass synthesis of dimethyl terephthalate.

Abstract: The present invention relates to a copolymerized saturated polyester resin and a coating composition containing same. Provided are a copolymerized saturated polyester resin and a coating composition having excellent corrosion resistance and chemical resistance when formed into a coating film, showing excellent processability and resin solubility, and thus particularly useful for coating a can and pre-coated metal (PCM).

Abstract: A bio-based polycarbonate ester and a method for making the bio-based polycarbonate are disclosed. The bio-based polycarbonate ester has excellent mechanical properties, such as tensile strength and impact strength. The method produces the bio-based polycarbonate ester using a high-viscosity polycondensation reactor.