Lotte Chemical Corporation

Yuseong gu, South Korea

Lotte Chemical Corporation

Yuseong gu, South Korea
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Patent
Lotte Chemical Corporation | Date: 2017-05-17

The present invention relates to a method for preparing a polyolefin resin composition including the step of mixing a first resin chip including a first polyolefin resin and glass filaments and a second resin chip including a second polyolefin resin and an aerogel or glass bubbles, a polyolefin resin composition including a first resin chip including a first polyolefin resin and glass filaments and a second resin chip including a second polyolefin resin and an aerogel or glass bubbles, and a polyolefin resin molded article including an extrusion molded article of the polyolefin resin composition.


Patent
Lotte Chemical Corporation | Date: 2017-08-30

Disclosed are a thermoplastic resin composition which, through combination of certain compatibilizers, satisfies high-gloss and high-impact properties, does not generate weld lines and flow marks, and furthermore, has appropriate impact strength and can sufficiently satisfy scratch resistance required for adoption in actual products, and a product using the same. The present invention provides a polycarbonate-based thermoplastic resin composition including 5-28 wt% of a polycarbonate thermoplastic resin; 55-80 wt% of a polymethylmethacrylate copolymer; 1-20 wt% of a styrene-acrylonitrile copolymer; and 1-20 wt% of a styrene-methylmethacrylate-butyl-acrylate copolymer, and a product using the same.


The present disclosure relate to a method for preparing a cathode electrolyte for redox flow batteries including the steps of: forming a first cathode electrolyte by reducing vanadium pentoxide (V_(2)O_(5)) in an acidic solution in the presence of a specific reducing compound; forming a second cathode electrolyte by reducing vanadium pentoxide (V_(2)O_(5)) in an acidic solution in the presence of a linear or branched aliphatic alcohol having 2 to 10 carbon atoms; and mixing the first cathode electrolyte and the second cathode electrolyte, and to a redox flow battery including the cathode electrolyte obtained by the preparation method.


Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.


Patent
Lotte Chemical Corporation | Date: 2017-06-07

The present invention relates to a continuous fiber composite including: a continuous fiber layer; a modified polyolefin layer; and a polyolefin resin layer, and a method for producing the same.


Patent
Lotte Chemical Corporation | Date: 2017-06-07

Disclosed is a stack welding apparatus for a redox flow battery. The stack welding apparatus for forming a stack by vibration-welding unit cells including an electrode flow frame and a membrane flow frame of a zinc-bromine flow battery including: i) a lower die supporting at least one unit cell and installed to be movable in a vertical direction; ii) an upper die disposed above the lower die and pressurizing the at least one unit cell as the lower die is lifted; and iii) a vibration source applying vibrations to the upper die to vibration-weld the at least one unit cell, wherein a plurality of divided plates are installed and fixed to bases of the lower die and the upper die corresponding to each other, and a thickness adjustment thin plate for adjusting a thickness deviation of the at least one unit cell is installed between at least one divided plate and one of the bases.


The present invention relates to a thermoplastic elastomer composition and a molded article manufactured therefrom. The thermoplastic elastomer composition according to the present invention has advanced vibration insulation and thermal resistance. Thus, the thermoplastic elastomer composition may exhibit excellent vibration insulation in the vibration frequency area that a human can feel, and may exhibit excellent mechanical properties even if exposed to a high temperature environment for a long time. A molded article manufactured using such a thermoplastic elastomer composition may be suitably used in various fields such as various daily supplies, medical supplies, parts for an automobile, interior and exterior materials for an automobile, interior and exterior materials for a building, and the like.


Provided is an aliphatic polycarbonate-co-aromatic polyester with long-chain branches. The copolymer includes repeating units represented by -OAO- and Z(O-)_(a), which are linked via carbonyl (-C(O)-) and -C(O)YC(O)- as linkers. Also provided is an aliphatic copolycarbonate including repeating units represented by -OAO- and Z(O-)_(a), which are linked via carbonyl (-C(O)-) linkers. The aliphatic copolycarbonate has a weight average molecular weight of 30,000 or more.


Provided are a polyurethane resin composition for a hollow fiber membrane potting agent, and a hollow fiber membrane module, and more particularly, a polyurethane resin composition for a hollow fiber membrane potting agent, which includes a polyurethane resin and a hydrophilic additive to have excellent resistance to internal/external pressure, and also to have excellent sealing performance, antifouling property, etc., and a hollow fiber membrane module including a cured product thereof.


Patent
Lotte Chemical Corporation | Date: 2016-03-30

The present invention relates to a method for separating aromatic compounds contained in naphtha which includes an extraction step of contacting specific ionic liquids and naphtha and a step of separating the aromatic compounds from naphtha contacted with the ionic liquids.

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