Evonik Degussa Gmbh

The Procter Gamble Company

Evonik Operations Gmbh

Deb IP Limited

Evonik Superabsorber Gmbh

Laurent Wattebled

Jorg Harren

Franck Furno

Christoph Loick

Markus Henn

Anne Ix-Mund

Emily Charlotte Boswell

Norman Scott Broyles

Ludwig Busam

Robert Earl Magness

Harald Schmidt

Frank Loeker

Pier-Lorenzo Caruso

Jörg Harren

Scott J Smith

Petra Allef

Matthias Naumann

Matthias Lobert

Stefan Leininger

Michael M Azad

Scott Smith

Manfred Van Stiphoudt

Rainer Teni

Peter Herbe

Christian Schmidt

Nicolaas De Bruin

Thomas Mangen

Dominik Gartz

Henry Rudolph

Anna Miasnikova

Lisa Maus

Jessica Pillat

Frank Soppe

Thomas Hoefges

Michael Azad

The present invention relates to an anti-stick processing aid for use in a process for producing water-absorbing polymers, comprising the steps of: i) mixing (&#x3b1;1) 0.1 to 99.999% by weight of polymerizable, ethylenically unsaturated monomers containing acid groups, or salts thereof, (&#x3b1;2) 0 to 70% by weight of monomers copolymerizable with (&#x3b1;1), (&#x3b1;3) 0.001 to 10% by weight of crosslinkers, (&#x3b1;4) 0 to 30% by weight of polymers, (&#x3b1;5) 0 to 80% by weight of water, and (&#x3b1;6) 0 to 20% by weight of assistants, (ii) free-radical polymerization with crosslinking to form a hydrogel polymer, (iii) drying the hydrogel polymer, (iv) grinding and sieving the hydrogel polymer, (v) surface postcrosslinking the hydrogel polymer and (vi) drying and finishing the water-absorbing polymer,wherein the anti-stick processing aid is used before and/or in steps (iii).

Anti-stick processing aids and use thereof in the production of water-absorbing particles

The present invention relates to a process for producing a water-absorbing polymer, comprising the process steps of (i) mixing (&#x3b1;1) 0.1 to 99.999% by weight of polymerizable, ethylenically unsaturated monomers containing acid groups, or salts thereof, (&#x3b1;2) 0 to 70% by weight of polymerized, ethylenically unsaturated monomers copolymerizable with (&#x3b1;1), (&#x3b1;3) 0.001 to 10% by weight of one or more crosslinkers, where the sum of the weights (&#x3b1;1) to (&#x3b1;3) is 100% by weight, (ii) free-radical polymerization with crosslinking to form a water-insoluble, aqueous untreated hydrogel polymer, (iii) drying the hydrogel polymer, (iv) grinding and sieving the water-absorbing polymer to size, wherein the aqueous monomer solution, is admixed with 0.01 to 5% by weight of at least one surfactant and optionally 0.01 to 5% by weight of a blowing agent having a particle size of 10 &#x3bc;m to 900 &#x3bc;m, based on the water-absorbing polymer.

Superabsorbent polymers with rapid absorption properties and process for producing same

The present invention relates to a particulate absorbent polymer material having:

Super-absorbing polymers with rapid absorption properties and method for producing the same

The present invention relates to a water-absorbing composition comprising at least The present invention also relates to a process for producing a water-absorbing composition, the water-absorbing composition obtainable by this process, a composite, a process for producing a composite, the composite obtainable by this process, chemical products such as foams, moldings, fibers, foils, films, cables, sealing materials, liquid-imbibing hygiene articles, carriers for plant and fungal growth regulators, packaging materials, soil additives or building products and also the use of a water-absorbing composition.

Odor and color stable water-absorbing composition

The present invention relates to a water-absorbing composition comprising water-absorbing polymer structures, on the surface of which is at least one tannin fraction which has a number-average molecular weight, determined in accordance with the test method described herein, of at least 1,000 g/mol, which has a weight-average molecular weight, determined in accordance with the test method described herein, of at least 1,000 g/mol, or which is a hydrolysable gallotannin. The present invention also relates to a process for the preparation of a water-absorbing composition, the water-absorbing composition obtainable by this process, a composite, a process for the production of a composite, the composite obtainable by this process, chemical products, such as, for example, hygiene articles, the use of a water-absorbing composition or of a composite and the use of a tannin fraction.

Superabsorbent composition with tannins for odor control

A process for producing a water-absorbing polymer composition, comprising the process steps of (i) mixing (&#x3b1;1) 0.1 to 99.999% by weight of ethylenically unsaturated monomers containing acid groups or salts thereof (&#x3b1;2) 0 to 70% by weight of polymerized, ethylenically unsaturated monomers copolymerizable with (&#x3b1;1), (&#x3b1;3) 0.001 to 10% by weight of one or more crosslinkers, (&#x3b1;4) 0 to 30% by weight of water-soluble polymers, and (&#x3b1;5) 0 to 20% by weight of one or more assistants, where the sum of their weights (&#x3b1;1) to (&#x3b1;5) is 100% by weight, (ii) free-radical polymerization with crosslinking to form a water-insoluble aqueous untreated hydrogel polymer, and surface postcrosslinking the ground hydrogel polymer wherein blowing agents having a particle size of 100 &#x3bc;m to 900 &#x3bc;m are added to the aqueous monomer solution prior to the addition of the initiator and the start of the free-radical polymerization.

Water-absorbing polymer having a high absorption rate

This invention relates to a method for producing a water-absorbing polymer, including the following steps: (i) mixing (&#x3b1;1) 0.1 to 99.999 wt % polymerizable, ethylenically unsaturated, acid-group-containing monomers; (&#x3b1;2) 0 to 70 wt % polymerized ethylenically unsaturated, monomers copolymerizable with (&#x3b1;1); (&#x3b1;3) 0.00 1 to 10 wt %, cross-linking agent(s); (&#x3b1;4) 0 to 30 wt % water-soluble polymers; and (&#x3b1;5) 0 to 20 wt % additive(s), wherein the total quantity by weight of (&#x3b1;1) to (&#x3b1;5) amounts to 100 wt %, (ii) radical polymerization while cross-linking, in order to form a hydrogel polymer, (iii) drying the hydrogel polymer, (iv) grinding and sifting the water-absorbing polymer, (v) surface post-cross-linking the hydrogel polymer, and (vi) drying and processing the polymer, wherein, before the admixture of the initiator and the start of radical polymerization, 0.01 to 5 wt % of a surfactant, relative to acrylic acid, 0.01 to 5 wt % foaming agent, are added.

Superabsorbing polymers with rapid absorption properties and method for producing the same

The present invention relates to improvements in prevention of discoloration of thermoplastic starch materials and their blends with other thermoplastic materials.

Thermoplastic starch compositions

The invention relates to compositions containing at least 10 wt.-% of water in relation to the total composition, if required, one or more additional solvents, optionally one or more emollients, if necessary, one of more emulsifiers, one or more surfactants which are different from the emulsifiers. The compositions being characterized such that they contain 0.01-30 wt.-% of super absorbing particles in relation to the total composition, and to the use thereof as skin and hand cleaning means.

Skin and hand cleaning means containing super-absorbing particles

A process for producing a water-absorbing polymer comprises: (i) mixing (&#x3b1;1) 0.1-99.99% by weight of ethylenically unsaturated monomers containing acid groups or salts thereof, or ethylenically unsaturated monomers including a protonated or quaternized nitrogen, or mixtures thereof, (&#x3b1;2) 0-70% by weight of ethylenically unsaturated monomers copolymerizable with (&#x3b1;1), (&#x3b1;3) 0.001-10% by weight of one or more crosslinkers, (&#x3b1;4) 0-30% by weight of water-soluble polymers, and (&#x3b1;5) 0-20% by weight of one or more assistants, where the sum of the weights (&#x3b1;1) to (&#x3b1;5) is 100%; (ii) free-radical polymerization with crosslinking to form an untreated hydrogel polymer; (iii) coarse comminution of the untreated hydrogel polymer to give pieces having a diameter from 0.1 mm to 5.0 cm; (iv) cooling and grinding the untreated hydrogel polymer; (v) drying the untreated hydrogel polymer after grinding at a temperature from 85&#xb0; C. to 260&#xb0; C.; (vi) postcrosslinking the hydrogel polymer and (vii) drying the water-absorbing polymer.

Process for producing improved absorbent polymers by means of cryogenic grinding

The present invention relates to a water-absorbing particulate composition comprising water-absorbing polymer particulate structure comprising partly neutralized, crosslinked polyacrylate, a surface crosslinking agent and a compound of the structure I in which R, R, Rand Rcan be identical or different and in each case represent a hydrogen atom, a halogen atom, a C- to C-hydrocarbon group or a hydroxyl group, Rrepresents a hydrogen atom, a C- to C-hydrocarbon group or an acetyl group, n represents an integer chosen from the group consisting of 1, 2 or 3 and Mrepresents an n-valent metal cation or an Hcation. In addition, the present invention also relates to a process for the preparation of a water-absorbing composition, the water-absorbing composition obtainable by this process, a composite, a process for the production of a composite, the composite obtainable by this process, and products, such as hygiene articles.

Superabsorbent composition with metal salicylate for odor control

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Dusseldorf, Germany

Laurent Wattebled