Lg Chem, Ltd

Other

Chang Sun Han

Yong Hun Lee

Hyemin Lee

Dae Woo Nam

Tae Bin Ahn

Dong Jo Ryu

Dong Hyun Kim

Sang Gi Lee

Hye Mi Nam

Byoung Yun Kim

Soo Jin Lee

Hyung Ki Yoon

Jung Min Sohn

Ju Hyun Kim

Mi Young Kim

Kyu Pal Kim

Chul Hee Ryu

Sung Jong Seo

Hwayoon Jung

Cha Hun Ku

Myung Han Lee

Jung Eun Kim

Jung Su Han

Seung Hun Yang

Min Ho Hwang

Hyun Sup Lee

Chang Wan Koo

Tae Young Won

Taebin Ahn

Yeon Soo Kim

Kyung Moo Lee

Ho Yeul Choi

Jae Hong Lee

Hyun Jung Kim

Hyang Mok Lee

Bu Gon Shin

Won Joon Lee

Gi Cheul Kim

Jeong Ho Park

Sung Soo Park

Jae Hoon Choe

Eun Kyu Her

Sang-Gi Lee

Chang Hun Lee

Chanjoong Kim

Jun Wye Lee

Eun Young Goh

Moo Kon Kim

Seung Do Hong

Hae Young Kim

Shin Won Kang

Woongchan Jeong

The present invention relates to a super absorbent polymer exhibiting more improved absorption under pressure and liquid permeability, even while basically maintaining excellent centrifuge retention capacity and absorption rate, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the surface crosslinking agent includes at least two compounds having a solubility parameter value (σ) of 12.5 (cal/cm)or more, and wherein at least one of the surface crosslinking agents is an alkylene carbonate-based compound, and the remainder is selected from the group consisting of an alkylene carbonate-based compound and a polyhydric alcohol-based compound.

Super absorbent polymer and method for producing same

The present disclosure relates to a preparation method of a super absorbent polymer non-woven fabric and super absorbent polymer fibers prepared therefrom. According to the preparation method of the present disclosure, it is possible to provide super absorbent polymer fibers exhibiting high flexibility and fast absorption rate in the form of long fibers.

Super absorbent polymer non-woven fabric and preparation method of the same

The present invention relates to a method for preparing superabsorbent polymer. The method for preparing superabsorbent polymer according to the present invention enables providing superabsorbent polymer having excellent absorption ratio, absorption speed and permeability.

Preparation method of super absorbent polymer

The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (&#xb7;10cm&#xb7;s/g) or more, and T-20 of 180 seconds or less.

The present invention relates to a method for preparing spherical cured polymer particles from a curable composition. The method comprises the steps of: dropping a curable composition onto a substrate having a water contact angle of 150&#xb0; to 170&#xb0; at 25&#xb0; C. to form droplets of the curable composition; and curing the droplets to form the polymer particles.

Method for preparing polymer particles

A super absorbent polymer according to the present invention has an excellent discoloration resistance property even under high temperature/high humidity conditions, while maintaining excellent absorption performance, and is preferably used for hygienic materials such as diapers, and thus can exhibit excellent performance.

The present invention relates to a super absorbent polymer exhibiting more improved absorption under pressure and liquid permeability, even while basically maintaining excellent centrifuge retention capacity and absorption rate, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the surface crosslinking agent includes at least two compounds having a solubility parameter value (&#x3c3;) of 12.5 (cal/cm)or more, and wherein at least one of the surface crosslinking agents is an alkylene carbonate-based compound, and the remainder is selected from the group consisting of an alkylene carbonate-based compound and a polyhydric alcohol-based compound.

The present invention relates to a super absorbent polymer and a method for preparing the same. According to the method for preparing a super absorbent polymer of the present invention, the super absorbent polymer +having improved absorption capacity and permeability can be prepared.

Super absorbent polymer and method for preparing same

The present disclosure relates to a preparation method of super absorbent polymer granules and super absorbent polymer granules prepared according to the same. More specifically, the preparation method of the present disclosure includes the steps of: forming a hydrogel polymer by carrying out a thermal polymerization or a photopolymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying and pulverizing the hydrogel polymer; classifying the pulverized polymer into a first fine powder having a particle size of 150 &#x3bc;m or less, and a base resin having a particle size of 150 &#x3bc;m or more and 850 &#x3bc;m or less; surface-crosslinking the base resin; classifying the surface crosslinked base resin to separate a second fine powder having a particle size of 150 &#x3bc;m or less; and forming fine powder granules by mixing the first fine powder, the second fine powder, and silica in a wet state.

Super absorbent polymer granules and preparation method thereof

A super absorbent polymer and a method for producing the same are disclosed herein. In some embodiments, the super absorbent polymer includes a base polymer powder including a cross-linked polymer, and first and second surface cross-linked layers formed on the base polymer powder. The first and second surface cross-linked layers are formed by further cross-linking the cross-linked polymer in the presence of a surface crosslinking agent, wherein the first and second surface cross-linked layers each include a cross-linked structure derived from epoxy-based and non-epoxy-based surface crosslinking agents. The super absorbent polymer can exhibit excellent absorbent properties even in a swollen state and thus exhibit excellent anti-rewetting effects. Accordingly, when the super absorbent polymer is used, it is possible to provide a sanitary material such as a diaper or a sanitary napkin which can give a smooth touch feeling even after the body fluid is discharged.

The present invention relates to a super absorbent polymer which maintains excellent absorption performance and retains physical properties even after being physically damaged by an external force. The super absorbent polymer comprises: a base polymer powder including a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface cross-linked layer formed on the base polymer powder and including a second cross-linked polymer in which the first cross-linked polymer is further cross-linked via an alkylene carbonate having 2 to 5 carbon atoms, wherein the super absorbent polymer satisfies predetermined physical properties.

Super absorbent polymer

The present invention relates to a super absorbent polymer exhibiting more improved liquid permeability and/or absorption rate while maintaining excellent absorption performance. Such super absorbent polymer comprises a base polymer powder including a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface cross-linked layer formed on the base polymer powder and including a second cross-linked polymer in which the first cross-linked polymer is further cross-linked through an alkylene carbonate having 2 to 5 carbon atoms, and satisfies predetermined physical properties.

The present invention relates to a method for preparing a super absorbent polymer exhibiting improved liquid permeability, gel strength, absorption rate and the like while maintaining excellent absorption performance. The method for preparing the super absorbent polymer comprises the steps of: carrying out a crosslinking polymerization of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal crosslinking agent to form a hydrogel polymer including a cross-linked polymer; drying, pulverizing, and classifying the hydrogel polymer to form a base polymer powder; and surface-crosslinking the base polymer powder by using a surface crosslinking liquid containing a surface crosslinking agent of an alkylene carbonate having 2 to 5 carbon atoms, in the presence of hydrophobic silica particles having a water-contact angle of more than 10&#xb0; and 150&#xb0; or less and hydrophilic silica particles having a water-contact angle of 10&#xb0; or less.

Method for preparing super absorbent polymer, and super absorbent polymer

Provided are a superabsorbent polymer and a preparation method thereof. The superabsorbent polymer may effectively avoid a rewetting phenomenon after absorbing liquid, because a saline solution hardly remains in the empty spaces between swollen gel particles. Accordingly, the superabsorbent polymer may be used to provide hygienic materials, such as diapers, sanitary napkins, etc., which have a fluffy texture even after body fluid is discharged thereto.

Superabsorbent polymer and preparation method thereof

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Daejeon, South Korea

Chang Sun Han