Lg Chem, Ltd

Other

Se Eun Lee

Byoung Yun Kim

Woo Seok Choi

Jae Min Lee

In Sung Jo

Dong Jo Ryu

Seon Hee Han

Jeong Heon Ahn

Hyung Woon Yoon

Hee Jung Jeon

Myung Ki Kim

Jeong Hoon Jo

Min Ah Kang

Jung Sup Han

Jeong Man Son

Cheolhoon Choi

Sungjin Lee

Sung Min Son

Sin Gun Kang

Baek K Shin

Wooseok Choi

The present disclosure relates to an electrode binder composition for a rechargeable battery and an electrode mixture comprising the same. The electrode binder composition for a rechargeable battery of the present disclosure not only has excellent properties in terms of binding strength, mechanical properties, and the like, but also can maintain structural stability of an electrode even after repeated charge/discharge cycles, thus improving rechargeable battery performances.

Electrode binder composition for rechargeable battery and electrode mixture including the same

Provided are an acrylic-based copolymer composition, a method of preparing the same, and an acrylic-based rubber composition obtained from the acrylic-based copolymer composition. Specifically, an acrylic-based copolymer composition prepared by polymerizing the acrylic-based copolymers each at high and low temperatures and mixing the acrylic-based copolymers, thereby having improved processability is provided.

Acrylic-based copolymer composition, method for preparing the same and acrylic-based rubber composition

Provided are a preparation method of a nitrile-based rubber, a nitrile-based rubber prepared therefrom, and a rubber composition including the nitrile-based rubber, and the nitrile-based rubber has a low content of a residual emulsifier and excellent mechanical physical properties by using a emulsifier mixture including a first emulsifier including a sulfosuccinate ester-based compound, and a second emulsifier including a fatty acid or a metal salt thereof, or a rosin acid or a metal salt thereof, each of which has 12 to 18 carbon atoms and a monocarboxyl group, wherein the first emulsifier and the second emulsifier are included at a weight ratio of 2:1 to 6:1.

Method for manufacturing nitrile-based rubber, nitrile-based rubber manufactured thereby, and rubber composition comprising same rubber

A conjugated diene-based copolymer composition, a method of preparing the same, and a rubber composition including the same are provided. The conjugated diene-based copolymer composition includes a first conjugated diene-based copolymer and a second conjugated diene-based copolymer each including a repeating unit derived from an aromatic vinyl monomer, a repeating unit derived from a conjugated diene-based monomer, and a repeating unit derived from a hydroxyalkyl (meth)acrylate monomer. The first conjugated diene-based copolymer includes 0.01 wt % to 1 wt % of the repeating unit derived from the hydroxyalkyl (meth)acrylate monomer, and the second conjugated diene-based copolymer includes 4.5 wt % to 6.5 wt % of the repeating unit derived from the hydroxyalkyl (meth)acrylate monomer.

Conjugated diene-based copolymer composition, method of preparing the same, and rubber composition including the same

A conjugated diene-based copolymer composition is provided. The conjugated diene-based copolymer composition includes a first conjugated diene-based copolymer having 20 wt % to 60 wt % of an aromatic vinyl monomer-derived repeating unit, 35 wt % to 75 wt % of a first conjugated diene-based monomer-derived repeating unit, and 1 wt % to 10 wt % of a hydroxyalkyl (meth)acrylate monomer-derived repeating unit. The first conjugated diene-based copolymer has a Mooney viscosity (MV) at 100&#xb0; C. of 30 to 120. The conjugated diene-based copolymer composition also includes a second conjugated diene-based copolymer having 20 wt % to 60 wt % of an &#x3b1;-methylstyrene monomer-derived repeating unit and 40 wt % to 80 wt % of a second conjugated diene-based monomer-derived repeating unit. The second conjugated copolymer has a Mooney viscosity (MV) at 100&#xb0; C. of more than 120 and equal to or less than 200. A method for preparing the conjugated diene-based copolymer is also provided.

Conjugated-diene based copolymer composition, method for preparing the copolymer composition and rubber composition comprising the copolymer composition

The present invention relates to a styrene-butadiene rubber compound and a rubber composition for tire bead fillers including the same, and more particularly, to a styrene-butadiene rubber compound capable of improving stiffness and hardness even when styrene-butadiene rubbers having different styrene contents are used instead of a combination of a conventional natural rubber and a phenol-based resin, and a rubber composition for tire bead fillers including the same.

Styrene-butadiene rubber compound and rubber composition for tire bead fillers comprising the same

The present invention relates to a method for preparing styrene-butadiene rubber in which a molecular weight modifier containing two or more components is used in a polymerization reaction and each of the two or more components is added at a optimal time, and the method is capable of improving physical properties of the prepared styrene-butadiene rubber, and styrene-butadiene rubber prepared thereby. The styrene-butadiene rubber prepared according to the preparation method of the present invention has improvement in characteristics such as tensile strength, elongation, etc., and thus may be usefully used in the production of a tire having environmental friendliness, abrasion resistance, and the like.

Method for preparing styrene-butadiene rubber and styrene-butadiene rubber

The present invention relates to a method for preparing a low styrene-butadiene rubber having a low combined styrene content and, more particular, to a method for preparing a low styrene-butadiene rubber, wherein the low styrene-butadiene rubber contributes to an excellent polymerization rate and vulcanization rate by using an aliphatic organic acid and a sulfonate based compound as emulsifiers, and is excellent in heat stability after blending, thereby improving the workability and viscosity in in roll processing, such that the low styrene-butadiene rubber is advantageous to produce a molded article with improved rigidity and hardness when mixed with a high styrene-butadiene rubber.

Method for preparing styrene-butadiene rubber having low combined styrene content

Provided are a method for preparing a nitrile-based rubber having an amount of ethylenically unsaturated nitrile of 34 wt % or less including preparing a polymer by performing a polymerization reaction by adding an ethylenically unsaturated nitrile-based monomer in two or more portions to a conjugated diene-based monomer, and coagulating the polymer by adding a sulfur-based coagulant to the polymer, and a nitrile-based rubber thus prepared having improved mechanical properties as well as excellent processability and low temperature characteristics.

Method for preparing nitrile-based rubber

Disclosed are nitrile rubber and a method of preparing the same. The nitrile rubber contributing to an excellent polymerization rate and vulcanization rate and having advantageous processability during vulcanization, and a method of preparing the same are disclosed.

Nitrile rubber and method of preparing the same

Disclosed is a method for producing a nitrile rubber comprising adding 0.1 to 5 parts by weight of at least one phosphate emulsifier selected from the group consisting of monoalkyl ether phosphate (MAP) represented by the following Formula 1 and dialkyl ether phosphate (DAP) represented by the following Formula 2, with respect to 100 parts by weight of monomers constituting the nitrile rubber. The method minimizes mold contamination during molding of produced nitrile rubber, eliminates the necessity of any process of removing mold contaminants, improves production efficiency and thus reduces defect rates of final molded articles.

Method for producing nitrile rubber

Disclosed is a resin having excellent impact resistance and color, and a method of preparing the same, and more specifically, a resin having the excellent impact resistance and color, and a method of preparing the same, in which the resin includes (a) an occlusion seed consisting of i) a base seed includingtowt % of alkyl methacrylate andtowt % of crosslinker, and ii) a copolymer of aromatic vinyl compound and alkyl acrylate occluding the base seed; (b) a polymer core surrounding the occlusion seed; and (c) a polymer shell surrounding the core, and according to the present invention, it is effective in providing a resin having superior impact strength, transparency, and color, in which the resin can be used as an excellent impact modifier when applying on a polymethylmethacrylate resin, and a method of preparing the same.

Resin having superior impact strength and color, and method for preparing the same

An apparatus for the generation of power which comprises a first cylinder and a second cylinder, a first float member and a second float member disposed in the first and second cylinders, respectively, a first inner cylinder and a second inner cylinder disposed in the first and second float members, respectively, a first lever and a second lever connected to the first and second float members, a crank member rotatably disposed on a crank shaft, a pair of arms connected at one end to the crank member and at the other end to the first and second levers, introducing and removing member of a fluid to and from the first and second cylinders, introducing and discharging member of air to and from the first and second float members, whereby when the fluid and air are introduced into the first cylinder and float member, and simultaneously removed from the second cylinder and float member, the first float member is caused to rise in the first cylinder and the second float member is caused to fall in the second cylinder, causing the levers to move up and down and causing the crank to rotate about its crank shaft.

Method of power generation and its apparatus utilizing gravitation force

The present invention relates to an apparatus for the generation of power and its method comprising two cylinders, and pistons disposed in the cylinders, and a lever arm containing weighted balls disposed therein and connected to the pistons, whereby the balls are transferred from one end portion of the lever arm to the other end portion thereof and the lever arm, moves up and down about its axis by the force of floats or pistons and the weighted balls.

Growing community of inventors

Daejeon, South Korea

Se Eun Lee