Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.

Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.

Abstract: A thermoplastic elastomer resin composition for a moisture-permeable waterproof film includes a thermoplastic elastomer resin composed of a hard segment containing polybutylene terephthalate and a soft segment containing polyethylene glycol and polytetramethylene glycol, wherein the polyethylene glycol is contained in an amount of 30 to 70 wt % and the polytetramethylene glycol is contained in an amount of 1 to 10 wt %, based on the total weight of the thermoplastic elastomer resin. A moisture-permeable waterproof film formed of the elastomer composition and a moisture-permeable waterproof fabric in which the moisture-permeable waterproof film is stacked on at least one surface of a substrate fiber are also provided.

Abstract: Disclosed herein is a negative electrode for a rechargeable lithium battery including a negative active material and a binder, wherein the binder includes carboxylmethyl cellulose and a styrene-butadiene rubber, and the carboxylmethyl cellulose has a weight average molecular weight of about 300,000 g/mol to about 500,000 g/mol, and a rechargeable lithium battery including the same.

Abstract: Disclosed is a negative electrode for a rechargeable lithium battery that includes a negative active material and a binder, wherein the binder includes carboxymethyl cellulose, polyvinyl alcohol, and a styrene-butadiene rubber, and a rechargeable lithium battery including the same.

Abstract: This invention relates to a thermoplastic elastomer resin composition for a moisture-permeable waterproof film, including a thermoplastic elastomer resin composed of a hard segment containing polybutylene terephthalate and a soft segment containing polyethylene glycol and polytetramethylene glycol, wherein the polyethylene glycol is contained in an amount of 30 to 70 wt % and the polytetramethylene glycol is contained in an amount of 1 to 10 wt %, based on the total weight of the thermoplastic elastomer resin. A moisture-permeable waterproof film formed of the elastomer composition and a moisture-permeable waterproof fabric configured such that the moisture-permeable waterproof film is stacked on at least one surface of a substrate fiber are also disclosed.

Abstract: This disclosure relates to a cross-linking polymer including polyamide-based segments having a specific structure and polyether-based segments having a specific structure, wherein the polyamide-based segments are bound to the polyether-based segments via a residue of an aromatic compound including at least one amine group and at least one carboxylic group, a polymer resin composition including the cross-linking polymer and a polyamide-based resin having relative viscosity of 2.5 to 4.0, and a polymer film including a base film layer including a melt-extrusion of the polymer resin composition.

Abstract: Disclosed herein is a negative electrode for a rechargeable lithium battery including a negative active material and a binder, wherein the binder includes carboxylmethyl cellulose and a styrene-butadiene rubber, and the carboxylmethyl cellulose has a weight average molecular weight of about 300,000 g/mol to about 500,000 g/mol, and a rechargeable lithium battery including the same.

Abstract: Disclosed is a negative electrode for a rechargeable lithium battery that includes a negative active material and a binder, wherein the binder includes carboxymethyl cellulose, polyvinyl alcohol, and a styrene-butadiene rubber, and a rechargeable lithium battery including the same.

Abstract: An apparatus to obtain 3D location information from an image using a single camera or sensor includes a first table, in which the numbers of pixels are recorded according to the distance of a reference object. Using the prepared first table and a determined focal distance, a second table is generated in which the number of pixels is recorded according to the distance of a target object. Distance information is then calculated according to the detected number of pixels with reference to the second table. A method for obtaining 3D location information includes detecting a number of pixels of a target object from a first image, generating tables including numbers of pixels according to distance, detecting a central pixel and a number of pixels of the target object from a second image, and estimating two-dimensional location information one-dimensional distance of the target object from the tables and pixel information.