Basf Se Corporation

Basf Aktiengesellschaft

Stefan Blei

Martin Weber

Marco Krüger

Matthias Weismantel

Uwe Stueven

Wilfried Heide

Rüdiger Funk

Dennis Lösch

Volker Seidl

Annemarie Hillebrecht

Thomas Daniel

Norbert Herfert

Dennis Loesch

Michael A Mitchell

Francisco Javier Lopez Villanueva

Karin Flore

Thomas Pfeiffer

Rainer Dobrawa

Indre Thiel

Jun Gao

Carolin Nadine Dücker

Lukas Metzger

Christian Schuetz

Francois Becker

Ulrich Müller

Christian Maletzko

Franz Weber

Oliver Bey

Gerhard Cox

Jürgen Schröder

Karl-Heinrich Schneider

Michael Schoenherr

Andreas Daiss

Volker Braig

Stefan Bruhns

Natalia Trukhan

Michael Schönherr

Volker Frenz

Thomas Gieger

Emi Leung

Andreas Brockmeyer

Hans-Michael Fricke

Asif Karim

Hendrick Mattenheimer

Frauke Thrun

Michael Heeger

Jessica Nadine Hamann

Oliver Gampfer

Dieter Reimer

Dieter Ehnes

Volker Spindler

Albert Werner

Andreas Melzer

Hendrik Mattenheimer

The invention relates to a process for producing 4,4'-dichlorodiphenyl sulfoxide comprising: (I) reacting thionyl chloride, chlorobenzene and aluminum chloride in a molar ratio of thionyl chloride:chlorobenzene:aluminum chloride of 1:(6 to 9):(1 to 1.5) at a temperature in the range from 0 to below 20° C., forming an intermediate reaction product and hydrogen chloride; (II) mixing aqueous hydrochloric acid and the intermediate reaction product at a temperature in the range from 70 to 110° C. to obtain an organic phase comprising 4,4′-dichlorodiphenyl sulfoxide and an aqueous phase; (III) cooling the organic phase comprising the 4,4′-dichlorodiphenyl sulfoxide to a temperature below the saturation point of 4,4′-dichlorodiphenyl sulfoxide to obtain a suspension comprising crystallized 4,4′-dichlorodiphenyl sulfoxide; (IV) solid-liquid-separation of the suspension to obtain a residual moisture containing solid 4,4′-dichlorodiphenyl sulfoxide comprising crystallized 4,4′-dichlorodiphenyl sulfoxide and mother liquor.

Process for producing 4,4'-dichlorodiphenyl sulfoxide

The invention relates to a crystal (C) consisting of at least 95% by weight of 4,4'-dichlorodiphenylsulfoxide, 0 to 2% by weight of impurities and 0 to 3% by weight of an organic solvent (os). Moreover, the present invention relates to a crystal composition (CC) comprising crystals (C) and a process for the production of the crystal composition (CC) and the crystal (C).

Crystal composition (CC) comprising 4,4#-dichlorodiphenylsulfoxide crystals (C)

A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution, comprising monomers bearing acid groups, in a gas phase surrounding the droplets, wherein the monomer solution comprises polyvalent cations and the polymer beads have a mean diameter of at least 150 &#x3bc;m.

Method for producing water-absorbent polymer particles with a higher permeability by polymerising droplets of a monomer solution

A process for producing granules comprising one or more complexing agent salts of formula (I): from an aqueous starting solution, comprising the one or more complexing agent salts in a concentration of from 10 to 80% by weight, based on the total weight of the aqueous starting solution, in a jet apparatus.

Process for producing granules comprising one or more complexing agent salts

The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, wherein the temperature of the gas leaving the polymerization chamber is 130&#xb0; C. or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.

Water-absorbent polymer particles

A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase in a reaction chamber, wherein the monomer solution is metered into the reaction chamber via at least one bore, and the diameter is from 210 to 290 &#x3bc;m per bore and the metering rate is from 0.9 to 5 kg/h per bore.

Method for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution

A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, wherein the polymer particles are coated with a permeability improver.

Method for producing permeable water-absorbing polymer particles through polymerization of drops of a monomer solution

A process for producing granules containing one or more complexing agent salts of the general formula from an aqueous starting solution, containing the one or more complexing agent salts in a concentration of from 10 to 80% by weight, based on the total weight of the aqueous starting solution, in a jet apparatus.

A process for producing polymer particles by polymerizing liquid droplets in a gas phase surrounding the droplets, said droplets comprising at least one monomer and being coated with particulate solids during the polymerization.

Method for producing polymer particles by the polymerization of liquid droplets in a gas phase

A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein a water-insoluble inorganic salt is suspended in the monomer solution and the polymer beads have a mean diameter of at least 150 &#x3bc;m.

Method for producing water-absorbent polymer particles with a higher permeability by polymerizing droplets of a monomer solution

A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally in the fluidized state in the presence of steam at a temperature of at least 60&#xb0; C.

Method for producing water-absorbent polymer particles by the polymerization of droplets of a monomer solution

A process for producing water-absorbing polymer particles, wherein an aqueous polymer gel is dried in a forced-air belt drier on a circulating conveyor belt and the surface of the conveyor belt has a multitude of elevations or depressions which are suitable for restricting the mobility of the aqueous polymer gel in transverse direction.

Process for producing water-absorbing particles

The present invention relates to a process for preparing a porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion, where the at least one metal ion is based on an aluminum ion and the at least one at least bidentate organic compound is based on fumaric acid, by reacting at least one aluminum compound with at least fumaric acid in an alkaline aqueous medium, optionally in the presence of at least one base, at a temperature in the range from 20&#xb0; C. to 100&#xb0; C. at an absolute pressure of not more than 2 bar for from 0.2 to 4 hours.

Process for preparing porous metal-organic frameworks based on aluminum fumarate

Water-absorbent porous polymer particles having specific sphericity and high bulk density

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Mannheim, Germany

Stefan Blei