Stockhausen Gmbh & Co Kg

Evonik Corporation

Stockhausen Gmbh

Roehm Gmbh Chemische Fabrik

Bernfried A Messner

Scott J Smith

Gonglu Tian

Fang Sun

Mark Joy

Heather S Jones

David L Bergman

Whei-Neen Hsu

Matthew Thomas Ondisco

Peter Quis

Markus Frank

Yaru Shi

Manfred Braum

Geoff Blake

Helmut Brehm

Hans-Georg Hartan

Dolf Stockhausen

Guenter Schmitt

Michael M Azad

Gerd Jonas

Klaus Pflueger

Robert Andrew Agne

Mark C Joy

Thomas A Kaiser

Ronald L Molen

Peter A Deaton

Gabriele Silva

Carl Joachim

The present invention relates to a fast particulate superabsorbent polymer composition comprising a polymer comprising a neutralized aluminum salt solution applied to the surface of a particulate superabsorbent polymer; wherein an aqueous solution of the neutralized aluminum salt has a pH value from about 5.5 to about 8; and subsequent to subjecting the particulate superabsorbent polymer composition to the Processing Test, the particulate superabsorbent polymer composition has a permeability stability index of from about 0.60 to about 0.99, and a compressibility from 1.30 mm/N to about 4 mm/N as measured by the Compression Test, and wherein the particulate superabsorbent polymer composition may have a Vortex time of from 25 to 60 seconds and absorbency under load at 0.9 psi of from 15 to 21 g/g.

Particulate superabsorbent polymer composition having improved stability and fast absorption

The present invention relates to a particulate superabsorbent polymer composition comprising a polymer comprising a neutralized aluminum salt solution applied to the surface of a particulate superabsorbent polymer; wherein an aqueous solution of the neutralized aluminum salt has a pH value from about 5.5 to about 8 and the particulate superabsorbent polymer composition has a mean particle size distribution of from 300 to 400 &#x3bc;m, an original Free Swell Gel Bed Permeability (FSGBP) of about 20&#xd7;10cmto about 200&#xd7;10cm; and subsequent to subjecting the particulate superabsorbent polymer composition to the Processing Test, the particulate superabsorbent polymer composition has a permeability stability index of from about 0.60 to about 0.99 and having particles having a particle diameter of larger than 600 &#x3bc;m in an amount of less than about 15 wt % of the particulate superabsorbent polymer composition and as specified by standard sieve classification.

Particulate superabsorbent polymer composition having improved stability

The present invention relates to a particulate superabsorbent polymer composition having improved stability comprising a polymer comprising from about 0.01 wt % to about 5 wt % of a neutralized aluminum salt solution applied to the surface of a particulate superabsorbent polymer; wherein an aqueous solution of the neutralized aluminum salt has a pH value from about 5.5 to about 8 and the particulate superabsorbent polymer composition has an original Free Swell Gel Bed Permeability (FSGBP) of about 20&#xd7;10cmto about 200&#xd7;10cmand a compressibility of from about 1.30 mm/N to about 4 mm/N prior to subjecting the particulate superabsorbent polymer composition to a Processing Test; and subsequent to subjecting the particulate superabsorbent polymer composition to the Processing Test, the particulate superabsorbent polymer composition has a permeability stability index of from about 0.60 to about 0.99.

The present invention relates to a particulate superabsorbent polymer composition which absorbs water, aqueous liquids, and blood, and a process to make the superabsorbent polymers, wherein a superabsorbent polymer is surface treated with a neutralized multivalent metal salt solution having a pH value similar as that of human skin. The present invention also relates to particulate superabsorbent polymer composition having high Gel Bed Permeability and high Absorbency Under Load.

Particulate superabsorbent polymer composition having improved performance properties

A process for producing an absorbing polymer structure (Pa) including the steps of obtaining a treated absorbing polymer structure (Pb) by increasing the absorption under load at a load of 0.3 or 0.9 psi (AUL) compared to an untreated absorbing polymer structure (Pu) by a first treatment of an outer region of the untreated absorbing polymer structure (Pu) and reducing the AUL compared to the treated polymer structure (Pb) by a second treatment of an outer region of the treated absorbing polymer structure (Pb). Such absorbing polymer structure (Pa) may be used in a composite and may be used in foams, moulded articles, fibers, sheets, films, cables, sealing materials, liquid-absorbing hygiene articles, carriers for plant growth-regulating and fungal growth-regulating agents, packaging materials and soil additives or building materials.

Absorbing structure having improved blocking properties

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 composite of a substrate having an application of superabsorbent polymer. The composite is made by applying, directly onto the substrate, an application of a polymer that will, upon being subjected to radiation, convert to a superabsorbent polymer. The substrate with applied polymer is subjected to radiation, such as being heated at a sufficient temperature for a sufficient time, to obtain the composite of substrate with superabsorbent polymer adhered to it.

Polymers that are cross-linkable to form superabsorbent polymers

A method for providing improved absorbency against pressure characteristics to non-surface crosslinked superabsorbent polymer fibers.

Superabsorbent polymer fibers having improved 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

The present invention relates to superabsorbent cross-linked polymers for watery liquids, which are built-up of partially neutralized monomers having monoethylenlcally unsaturated acid groups, optionally further monomers copolymerizable therewith, as well as polymers optionally suitable as graft basis, and which can be manufactured by using a cross-linker/monomer combination of

Growing community of inventors

Greensboro, NC, United States of America

Bernfried A Messner