Lg Chem, Ltd

Yoon Jae Min

Se Won Baek

Jong Hun Song

Gicheul Kim

Sul Hee Yoo

Heechang Woo

Jae Yul Kim

Ki Hyun Kim

Sung Soo Park

Tae Yun Kim

Seul Ah Lee

Jinuk Choi

Ui Seok Chung

Hyeon Sik Choi

Dong Hyun Ko

Kyong Yong Cha

Jun Kyu Han

Myung Ji Suh

Yu Jin Kim

Kyu Pal Kim

Kiyoul Yoon

WonChan Park

In Yong Jeong

Kyunghoon Min

Seongkyun Kang

Kwang Hyon Kim

Young Cheol Jung

Jeong Kug Cho

Sangwon Han

Jaeyul Kim

The micronizing apparatus includes: a body having a transfer space where hydrogel is transferred, and a discharge space where ground hydrogel is discharged; a rotation shaft disposed in the transfer space, wherein at least one screw is formed on an outer perimeter surface of the first rotation shaft, to transfer the hydrogel along a longitudinal direction of the body; a rotor installed on the rotation shaft so as to rotate together with the rotation shaft, wherein a plurality of rotor blades and a plurality of rotor recesses are alternately formed along a circumferential direction on an outer perimeter part of the rotor; and a stator surrounding the rotor with an air gap between the rotor and the stator, which is a predetermined distance between an outside diameter of the rotor and an inside diameter of the stator, and is fixed to the body.

Micronizing apparatus for hydrogel of super absorbent polymer

A minute cutting apparatus for a superabsorbent polymer hydrogel using a pump is disclosed. An embodiment of the present invention provides the minute cutting apparatus, including: a barrel body in which a transfer space through which the hydrogel is transferred is formed; a pumping unit installed in the barrel body to supply a pressing force to the transfer space, a rotation shaft rotatably installed in the transfer space of the barrel body; a driving motor configured to provide a rotational driving force to rotation shaft; a cutter member installed on the rotation shaft to pulverize the hydrogel transferred by the pressing force in the transfer space; and a perforated plate installed in the barrel body to discharge the hydrogel pulverized by the cutter member to an outside of the barrel body.

Minute cutting apparatus for super absorbent polymer hydrogel using pump

The present disclosure relates to a super absorbent polymer, and a preparation method thereof. More specifically, it relates to a super absorbent polymer prepared such that agglomeration between pulverized particles is suppressed, and drying efficiency and uniformity of particle size distribution are improved by including a carboxylic acid-based additive having a specific structure and hydrophobic particles before drying the hydrogel polymer, and a preparation method thereof.

Super absorbent polymer and preparation method thereof

The present disclosure relates to a preparation method of a super absorbent polymer composition. More specifically, it relates to a preparation method of a super absorbent polymer composition capable of pulverizing the hydrogel polymer to a normal particle size without agglomeration between particles by adding an additive having a specific structure, and significantly reducing the amount of fine powder generated during the process.

Preparation method of super absorbent polymer composition

A complex minute cutting apparatus for a superabsorbent hydrogel is disclosed. The complex minute cutting apparatus includes: a barrel body in which a transfer space through which a hydrogel is transferred is formed and a discharge part is formed at a side surface thereof; a transfer unit installed in the barrel body to transfer the hydrogel in the transfer space; and a plurality of cutting modules installed in the transfer unit to pulverize the hydrogel and discharging it to an outside of the discharge unit in a cut state.

Complex minute cutting apparatus for super absorbent polymer hydrogel

A method for preparing superabsorbent polymer is disclosed herein. In some embodiments, a method includes polymerizing a monomer composition to form a hydrogel polymer, wherein the monomer composition comprises a water soluble ethylenically unsaturated monomer and a polymerization initiator, drying and grinding the hydrogel polymer to prepare a base resin powder, surface cross-linking the base resin powder using a surface cross-linking agent to prepare surface cross-linked base resin powder, and hydrating the surface cross-linked base resin powder by pulse spraying water to prepare a superabsorbent polymer, wherein a scattering index of droplets generated during the pulse spraying is 5 to 10, and wherein the scattering index is calculated in accordance with the following Mathematical Formula 1. The superabsorbent polymer can have an improved moisture content to prevent surface property change of the superabsorbent polymer, and decreased amount of fine powder which improves processability during manufacture of articles using superabsorbent polymer.

Method for preparing superabsorbent polymer

The present disclosure relates to a preparation method of a super absorbent polymer. More specifically, it relates to a preparation method of a super absorbent polymer capable of significantly reducing the amount of fine powder generated during the process by mixing a hydrogel polymer with an additive having a specific structure, pulverizing it, and then drying it with a paddle-type dryer.

Preparation method of super absorbent polymer

The method for preparing a super absorbent polymer according to the present disclosure has a feature that it is possible to reduce the generation of a fine powder during production of the super absorbent polymer while maintaining excellent physical properties of the super absorbent polymer, including centrifuge retention capacity (CRC) and vortex removal time.

Method for preparing super absorbent polymer

The method for preparing a super absorbent polymer according to the present disclosure reduces the generating amount of a fine powder while realizing the same particle size distribution in the process of pulverizing the dried polymer, thereby reducing the load of the fine powder reassembly, drying, pulverizing and classifying steps.

The present invention relates to a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, the present invention provides a catalyst for oxidative dehydrogenation having a porous structure which may easily control heat generation due to high-temperature and high-pressure reaction conditions and side reaction due to the porous structure and thus exhibits superior product selectivity, and a method of preparing the catalyst.

Catalyst for oxidative dehydrogenation and method of preparing the same

The present invention relates to a continuous recovery method of (meth)acrylic acid and an apparatus for use in the recovery method. A continuous recovery method of (meth)acrylic acid according to the present invention can ensure a high recovery rate of (meth)acrylic acid through an acetic acid separation process in addition to enabling the stable recovery of (meth)acrylic acid and the operation of continuous processes.

Method and apparatus for continuously recovering (meth)acrylic acid

The present invention relates to a continuous recovery method of (meth)acrylic acid and an apparatus for use in the recovery method. A continuous recovery method of (meth)acrylic acid according to the present invention can ensure a high recovery rate of (meth)acrylic acid through a solvent recovering process in addition to enabling the stable recovery of (meth)acrylic acid and the operation of continuous processes.

Method of continuous recovery of (meth)acrylic acid and apparatus for the method

The present invention relates to a manufacturing method of a super absorbent polymer. More specifically, the present invention relates to a manufacturing method of a super absorbent polymer capable of reducing energy, reducing a process cost, and reducing a load on a device, at the time of drying due to reduction in an amount of water used during reassembly of fines, while manufacturing a super absorbent polymer exhibiting a reduced generation amount of re-fines and having excellent physical properties.

Manufacturing method of super absorbent polymer

The present invention relates to a method for continuous recovery of (meth)acrylic acid and an apparatus used for the recovery method. The recovery method according to the present invention enables stable recovery of (meth)acrylic acid and the operation of a continuous process, while securing a high (meth)acrylic acid recovery rate through a solvent recovery process.

The present invention relates to a method for continuous recovery of (meth)acrylic acid and an apparatus used for the recovery method. The recovery method according to the present invention enables stable recovery of (meth)acrylic acid and the operation of a continuous process, while securing a high (meth)acrylic acid recovery rate through the acetic acid separation process.

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Daejeon, South Korea

Yoon Jae Min