18539951. Preparation Method of Super Absorbent Polymer and Super Absorbent Polymer Therefrom simplified abstract (LG CHEM, LTD.)
Preparation Method of Super Absorbent Polymer and Super Absorbent Polymer Therefrom
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Preparation Method of Super Absorbent Polymer and Super Absorbent Polymer Therefrom - A simplified explanation of the abstract
This abstract first appeared for US patent application 18539951 titled 'Preparation Method of Super Absorbent Polymer and Super Absorbent Polymer Therefrom
Simplified Explanation
The present disclosure relates to a preparation method of a super absorbent polymer with excellent basic absorbency and liquid permeability by optimizing the degree of cross-linking of a base resin powder and a surface cross-linked layer.
- Forming a hydrogel polymer by cross-linking and polymerizing a monomer composition including a water-soluble ethylene-based unsaturated monomer with acidic groups and an internal cross-linking agent.
- Drying, pulverizing, and classifying the hydrogel polymer to form a base resin powder.
- Forming a surface cross-linked layer by further cross-linking the base resin powder in the presence of a surface cross-linking agent.
- The water-soluble ethylene-based unsaturated monomer has a degree of neutralization of less than 70 mol %.
- Further neutralizing the base resin powder by treating it with a basic solution during or after forming the surface cross-linked layer.
- Potential Applications
This technology can be used in the manufacturing of super absorbent polymers for various applications such as baby diapers, adult incontinence products, feminine hygiene products, and agricultural water retention systems.
- Problems Solved
This technology solves the problem of optimizing the absorbency and liquid permeability of super absorbent polymers by controlling the degree of cross-linking in the base resin powder and surface cross-linked layer.
- Benefits
The benefits of this technology include improved absorbency, enhanced liquid permeability, and overall better performance of super absorbent polymers in various applications.
- Potential Commercial Applications
The potential commercial applications of this technology include the production of high-quality super absorbent polymers for the personal care industry, agriculture sector, and other industries requiring efficient liquid absorption materials.
- Possible Prior Art
One possible prior art in this field is the method of surface cross-linking super absorbent polymers to improve their performance in absorbing liquids.
Original Abstract Submitted
The present disclosure relates to a preparation method of a super absorbent polymer having excellent basic absorbency and liquid permeability at the same time by optimizing the degree of cross-linking of a base resin powder and a surface cross-linked layer, and a super absorbent polymer prepared therefrom. The preparation method of a super absorbent polymer includes the steps of: forming a hydrogel polymer by cross-linking and polymerizing a monomer composition including a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups and an internal cross-linking agent; drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and forming a surface cross-linked layer by further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent, wherein the water-soluble ethylene-based unsaturated monomer has a degree of neutralization of less than 70 mol % in the step of forming a hydrogel polymer, and the preparation method further includes a step of further neutralizing the base resin powder by treating the base resin powder with a basic solution during the step of forming a surface cross-linked layer or after the step of forming a surface cross-linked layer.
