Stockhausen Gmbh & Co Kg

Stockhausen Gmbh

Evonik Stockhausen Gmbh

Fang Sun

Bernfried A Messner

Heather S Jones

Whei-Neen Hsu

Ronald L Molen

Peter A Deaton

Thomas A Kaiser

Bernfried S Messner

A web of superabsorbent polymer and fiber made by an in situ neutralization, wet-laid process, wherein the degree of neutralization of the superabsorbent polymer is partial, preferably less than about 80 mol %. The web exhibits an excellent centrifuge retention capacity property, as compared to prior webs of superabsorbent polymer and cellulosic fiber made by in situ neutralization, wherein the degree of neutralization is total, such as 100 mol % or more.

Manufacture of web superabsorbent polymer and fiber

A superabsorbent polymer comprising a delayed absorption superabsorbent polymer having a free water absorbency property of absorbing less than about 3 grams of aqueous saline per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution of superabsorbent polymer ranging from about 40 micrometers to about 890 micrometers.

Superabsorbent polymers having delayed water absorption characteristics

A particulate material composition of superabsorbent polymer particles, wherein less than about 60% by weight of the superabsorbent polymer particles will pass through a U.S. Standard 50 mesh sieve. The composition has anti-caking properties and also reduced dusting. The composition can be produced by mixing the superabsorbent polymer particles with an inorganic powder, such as clay.

Superabsorbent polymers having anti-caking characteristics

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Lisle, IL, United States of America

Fang Sun