Basf Aktiengesellschaft

Basf Se Corporation

The Procter Gamble Company

Dieter Hermeling

Thomas Daniel

Ulrich Riegel

Mark Elliott

Reinhold Schwalm

Stefan Bruhns

Matthias Weismantel

Norbert Goetz

Hardo Siegel

Frank Dietsche

Albrecht Harreus

Klemens Massonne

Randolf Hugo

Jochen Wild

Peter Lechtken

Veit Stegmann

Franz Niklaus Windlin

Rainer Becker

Peter Bassler

Wolfgang Harder

Bernd Wolf

Hans Theobald

Axel Meyer

Bernd Wenderoth

Hartwig Voss

Manfred Julius

Walter Dobler

Alfred Hagemeyer

Dieter Degner

Hartmann Koenig

Robin Lynn McKiernan

Monte Alan Peterson

Heinz Hannebaum

Ruediger Funk

Peter Hammes

Friedrich Sauer

Michaela Monika Czupik

Christopher William Rieker

Karl Possemiers

Andreas Weiper-Idelmann

Yvonne Hagen

Matthias Fankhaenel

Thomas Lautensack

Peter Leunis

The present invention relates to a water absorbing material obtainable by a process comprising the steps of bringing particles of a non surface-crosslinked water-absorbing polymer in contact with

Water-absorbing polymeric particles and method for the production thereof

A mixture of superabsorbents having differing surface postcrosslinking, more particularly a mixture of differingly surface-postcrosslinked sieve cuts of a base polymer, exhibits improved absorption and retention over a unitarily surface-postcrosslinked superabsorbent.

Mixture of surface postcrosslinked superabsorbers with different surface postcrosslinking

The present invention relates to a water-absorbing material obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, to a process for its production and to articles comprising the water-absorbing material.

Water absorbing material

Absorbent structures comprising vacuum-treated (optionally coated) post-crosslinked water-absorbing polymeric particles, obtainable by vacuum-treating and optionally plasma-treating post-crosslinked water-absorbent polymeric particles (that may optionally be coated), the resulting vacuum-treated post-crosslinked water-absorbing polymeric particles having an improved absorption, whilst having good gel bed permeability.

Absorbent structures comprising post-crosslinked water-absorbent articles

The present disclosure relates to an absorbent structure for use in a diaper for babies and infants, a feminine hygiene article and/or an incontinence article, said absorbent structure comprising a water-absorbing material, the water-absorbing material being obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, and to a process for its production.

Absorbent article comprising water-absorbing material

The invention concerns a process for producing water-absorbing polymer, which comprises a base polymer A being mixed with a first aqueous solution B of at least one surface postcrosslinker and a second aqueous solution C of at least one polyvalent cation and thermally treated, wherein said base polymer A is based on at least 50% neutralized acid-functional monomer and said solutions B and C are metered wholly or partly concurrently through separate nozzles whereby a water-absorbing polymer having a high saline flow conductivity value is obtained.

Postcrosslinking of water-absorbing polymers

The present invention relates to a process for producing water-absorbing polymeric particles by polymerizing a monomer solution, which comprises removing the polymer gel from the reactor when the gel temperature is at least 50&#xb0; C. and the monomer conversion is not more than 90 mol %, and also to a process for producing hygiene articles.

Production of water-absorbing polymeric particles

Swellable hydrogel-forming polymers having high permeability Swellable hydrogel-forming polymer comprising at least one hydrophilic polymer of dendritic structure and at least one water-insoluble phosphate, a process for preparing the swellable hydrogel-forming polymer and also its use in hygiene articles.

Swellable hydrogel-forming polymers having high permeability

The invention concerns water-absorbing polymeric particles possessing high saline flow conductivity in the swollen state which comprise insoluble metal sulfates as synergistic fillers, and also a process for their production and their use.

Insoluble metal sulfates in water absorbing polymeric particles

Disclosed are novel (meth)acrylic esters of monoalkoxylated polyols, a process for their preparation and their use for preparing crosslinked swellable hydrogel-forming polymers and crosslinked swellable hydrogel-forming polymers.

(Meth)acrylic esters of monoalkoxylated polyols, and production thereof

The invention relates to finely divided water-absorbing polymeric particles having high fluid transportation and absorption performance, the Centrifuge Retention Capacity (CRC) being not less than 26 g/g, the absorbency under a load of 4.83 kPa (AUL0.7 psi) not less than 23 g/g and the Transportation Value (TV) not less than 15,000 cms, the Transportation Value (TV) being the product of Saline Flow Conductivity (SFC) and wicking absorption after 60 minutes (DA) multiplied by 10, and wherein the wicking absorption after 60 minutes (DA) is the weight of 0.9% by weight sodium chloride solution absorbed by 70 g of the water-absorbing polymeric particles in 60 minutes, wherein the water-absorbing polymeric particles are situated, during measurement, in a circularly round vessel which has an internal diameter of 6 cm and is sealed at its lower end by a sieve base of 36 &#x3bc;m mesh size, and the sieve base is in atmospheric contact with 0.9% by weight sodium chloride solution, processes for their preparation and also their use in hygiene articles and packaging materials.

Fine-grained water-absorbent particles with a high fluid transport and absorption capacity

Disclosed are novel (meth)acrylic esters of alkoxylated unsaturated polyol ethers, a process for their preparation and their use for preparing crosslinked swellable hydrogel-forming polymers and crosslinked swellable hydrogel-forming polymers.

(Meth)acrylic acid esters of alkyoxylated unsaturated polyol ethers, and production thereof

Disclosed are novel (meth)acrylic esters of unsaturated amino alcohols, a process for their preparation and their use for preparing crosslinked swellable hydrogel-forming polymers and crosslinked swellable hydrogel-forming polymers.

(Meth)acrylic acid esters of unsaturated aminoalcohols and preparation thereof

Swellable hydrogel-forming polymer comprising at least one hydrophilic polymer of dendritic structure, a process for preparing the swellable hydrogel-forming polymer and also its use in hygiene articles.

Swellable hydrogel-forming polymers having a low fraction of fines

Growing community of inventors

Böhl-Iggelheim, Germany

Dieter Hermeling