Sheet-like superabsorbent structures

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United States of America Patent

PATENT NO 6051317
SERIAL NO

08894475

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention relates to sheet-like absorbents for water and aqueous solutions, containing at a defined distribution A) at least one water-swellable synthetic and/or natural superabsorbent polymer, and B) at least one water-soluble synthetic and/or natural polymer as a matrix of sheet-like design wherein the superabsorbent component A) is integrated or fixed. The sheet-like absorbents have an increased absorptive capacity for water and aqueous liquids, particularly under load. They are manufactured by forming a sheet-like matrix from the water-soluble synthetic and/or natural polymers B) and providing same with said water-swellable synthetic and/or natural superabsorber A), e.g., by applying a solution of matrix B) on a surface, sprinkling same with component A), and drying the sheet-like structure thus obtained. Such sheet-like absorbents are used in hygienic articles, as components in natural or artificial soils, as insulating material for pipes and lines, primarily cables and building constructions, as liquid-absorbing and liquid-storing component in packaging materials, as a part in articles of clothing, and as a depot for the controlled release of an active substance.

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Patent Owner(s)

Patent OwnerAddress
EVONIK STOCKHAUSEN GMBHGERMAN CLAY FIELD KREFELD NORTH RHINE-WESTPHALIA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brueggemann, Helmut Duisburg, DE 4 92
Dahmen, Kurt Moenchengladbach, DE 39 1200
Lehwald, Dieter Koeln, DE 2 83
Theilmann, Roland Krefeld, DE 2 83

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