Lg Chem, Ltd

Lg Display Co., Ltd.

Duretek Inc.

Jun-Kyu Kim

Su-Jin Kim

Young-Sam Kim

Young-In Yang

Bo-Hee Park

Min-Gyu Kim

Ung-Gu Kang

Jong-Hyuk Kwon

Young-Jae Hur

Yun-Kyung Do

Disclosed are a superabsorbent polymer having improved anti-caking properties and a method of preparing the same, and the superabsorbent polymer having improved anti-caking properties includes a superabsorbent polymer, microparticles, and water, and to improve anti-caking properties of the superabsorbent polymer, the temperature of the superabsorbent polymer or water upon addition of water or the aging time upon stirring is adjusted, thereby preventing caking of the particles.

Super absorbent resin having improved solidification resistance, and method for preparing same

The present invention relates to a bullet including an air-guiding recess, comprising: a head; and a taildisposed behind the head, and including an odd number of air-guiding recessesformed so as to be curved in the bottom and outer circumferential surfaces thereof. The air-guiding recessis characterized by having a sloped bottom that increases in depth while progressing to the bottom surface of the tail. Accordingly, vortex is prevented from being generated at the rear side of the bullet, so as to significantly increase the effective range thereof and simultaneously improve accuracy when shooting same.

Bullet including an air-guiding recess

The present invention relates to an absorbent resin surface-modified with a cationic polymer compound. According to the present invention, the use of a cationic polymer compound can provide a simple and economical way to prepare an absorbent resin surface-modified with a cationic polymer compound with enhanced absorption rate and absorbency, overcoming the problem with the conventional absorbent resin having low absorption rate and poor absorbency. In accordance with one embodiment of the present invention, there is provided an absorbent resin comprising a cross-linked polymer which includes a base resin prepared in the form of powder by polymerizing a monomer based on acrylic acid having an acidic group and neutralized by 40 to 95 mol % and then forming an internal cross-linking with a first cross-linking agent, where the surface of the base resin is cross-linked with a second cross-linking agent, and the cross-linked polymer is surface-modified with a cationic polymer compound comprising a polyacrylamide-based polymer or its salt.

Absorbent resin surface-modified with cationic polymer compound

The present invention relates to a process for preparing a water absorbent resin, particularly to a process for preparing a water absorbent resin which can resolve the uneven size of the fine pulverized gel-type resin and long pulverizing time those are the problems of prior process for preparing the water absorbent resin, by carrying out the pulverizing process of the gel-type resin divided into the coarse pulverizing process which is carried out with the internal cross-linking polymerization, and the fine pulverizing process. According to the preparation process, it is possible to mass-produce the water absorbent resin showing excellent absorption under pressure and low extractable content.

Process for preparing water absorbent resin with high performance

Growing community of inventors

Daejeon, South Korea

Jun-Kyu Kim