Korea Kumho Petrochemical Co., Ltd.

Poongsan Corporation

Cheol Min Park

Jae Young Ko

Dae Hyung Lee

Hanjoung Cho

Sang Chul Ji

Hyo Moon Nam

Jun Hyung Kim

Min Sung Kwon

Eun Kyung Noh

Tae Hee Kim

Won Hone Kim

Min Jae Jeong

Young Re Cho

Buem Jae Lee

Beum Jae Lee

Sun Young Mun

Tae Yang Kwon

Hyo Young Kim

The present invention provides a method of tin-plating a copper alloy for electric or electronic parts and automobile parts which has excellent insertion force, heat-resistant peeling, and solderability, and a tin-plating material of a copper alloy manufactured therefrom.

Method of tin-plating copper alloy for electric or electronic parts and automobile parts and tin-plating material of copper alloy manufactured therefrom

The present invention relates to a production method of a copper-titanium (Cu&#x2014;Ti)-based copper alloy material and a copper alloy material produced therefrom. Thus, the copper alloy material has target yield strength, electrical conductivity, and bending workability and thus is applied to automobiles and electric/electronic parts requiring high performance.

Method for producing copper-titanium based copper alloy material for automobile and electronic parts and copper alloy material produced therefrom

The present invention relates a method of producing a copper-titanium (Cu&#x2014;Ti)-based copper alloy, and provides a method of producing a copper alloy material for automobile and electrical/electronic components requiring high performance by satisfying high strength and bendability together.

Method of producing copper alloy material having high strength and excellent bend ability for automobile and electrical/electronic components

A method of producing a copper alloy material for automobile and electrical and electronic components. The copper alloy material produced by the method exhibits superior tensile strength, spring limit, electrical conductivity and bendability.

Copper alloy material for automobile and electrical and electronic components and method of producing the same

Provided is a copolymer composed of an aromatic vinyl monomer, a conjugated diene monomer, and a functional monomer including two or more nitrogen atoms and a method of preparing the copolymer.

Copolymer including functional monomer and method of preparing the same

One aspect of the present invention provides an end-modified conjugated diene polymer represented by Formula 1 below:  wherein p is a conjugated diene polymer chain; Rto Rare each independently C-Csaturated or unsaturated hydrocarbon chains; X is carbon (C), silicon (Si), or nitrogen (N); a is 1 or 2; and n is an integer of 1 to 200, and a method for preparing the same.

End-modified conjugated diene polymer and method for preparing the same

Disclosed is a leadless free-cutting copper alloy that exhibits superior machinability, cold workability and dezincification resistance and a method for producing the same. The leadless free-cutting copper alloy comprises 56 to 77% by weight of copper (Cu), 0.1 to 3.0% by weight of manganese (Mn), 1.5 to 3.5% by weight of silicon (Si), and the balance of zinc (Zn) and other inevitable impurities, thus exhibiting superior eco-friendliness, machinability, cold workability and dezincification resistance.

Leadless free-cutting copper alloy and method for producing the same

One aspect of the present invention provides an end-modified conjugated diene polymer represented by Formula 1 below: 

The present invention relates to an alkylalkoxysilane compound of a novel structure which has an ether group and an dialkylamino group in an alkyl chain of the alkylalkoxysilane and thus has remarkably improved storage stability and hydrophilicity and a method for preparing same.

Alkylalkoxysilane compounds containing ether group and dialkylamino group and process for preparing the compounds

The present invention relates to a conjugated diene polymer end-modified with an alkoxysilane derivative. More particularly, the present invention relates to an end-modified conjugated diene polymer, wherein an alkoxysilane derivative having an ether group and a dialkylamino group is bonded as end modifier to an end of a conjugated diene polymer, which is useful as a rubber material for a tire tread owing to improved compatibility with an inorganic reinforcing agent and improves dynamic mechanical properties such as wet traction, rolling resistance, Mooney viscosity, processability, etc.

Conjugated diene polymer end-modified with alkoxysilane derivative

The present invention provides an end-modified diene copolymer having excellent compatibility with silica as a reinforcement material, and a preparation process thereof, in which the end-modified diene copolymer is prepared by preparing a living polymer of a conjugated diene monomer and/or a vinyl aromatic monomer, modifying the living polymer with a reactive organosiloxane compound, and then modifying the end of the living polymer, to which the organosiloxane compound has not been coupled, with an organosilane compound having various functional groups. When the end-modified diene copolymer is used as a rubber material in the manufacture of a silica tire, the dispersion of silica in the copolymer can be improved and the bonding strength between silica and the rubber can be significantly increased, thereby manufacturing a high-quality silica tire.

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Daejeon, South Korea

Cheol Min Park