Basf Aktiengesellschaft

Basf Se Corporation

Matthias Maase

Klemens Massonne

Veit Stegmann

Laszlo Szarvas

Georg Degen

Lars Wittenbecher

Ulrich Arnold

Manfred Doering

Ralf Noe

Wolfgang Siegel

Michael Bartsch

Miguel Flores

Alfred Oftring

Heinz Herbst

Michael Henningsen

Klaus Halbritter

Michael Becker

Oliver Huttenloch

Gerhard Bertlein

Larry D Timberlake

Dieter Baumann

Mark V Hanson

Andreas Henne

Joerg Heilek

Rainer Papp

Michael Lutz

Jörg Heilek

Frank Hermanutz

Michael Siemer

Matthias Dust

Hermann Ascherl

Rainer Xalter

Martin Volland

Manfred Döring

Holger Ganz

Hartmut Denecke

Ingo Richter

Norbert Gutfrucht

Eric Uerdingen

Alexander Tishkov

Frank Gaehr

Michael Drögemüller

Gunter Scherhag

Verena Seitz

Manuel Budich

Georg Groβmann

Karl Heinz Schall

Calvin Emanuel

Method of lightening the color of mixtures comprising imidazolium salts or imidazoles, wherein the mixtures are treated with an oxidant.

Method of working up mixtures comprising imidazolium salts

The present invention is related to the use of specific cyclic and/or polymeric aryl-phosphines as flame retardants and to a method for reducing the flammability of organic material by incorporating into the material these specific cyclic and/or polymeric phosphines. Moreover, the invention is related to a polymeric composition containing a polymeric material and at least one of the specific cyclic and/or polymeric phosphines in an amount of from 1 to 15% by weight, based on the weight of the polymeric material. The invention also relates to a composition comprising at least one of the specific cyclic and/or polymeric phosphines and at least one polymerizable monomer.

Cyclic phosphines as flame retardants

Process for preparing ionic compounds comprising cations containing quaternary sp-hybridized nitrogen atoms, which comprises reacting compounds containing a double-bonded nitrogen atom with a dialkyl sulfate with participation of both alkyl groups of the dialkyl sulfate and, if appropriate, subjecting the resulting ionic compound containing sulfate anions to an anion exchange.

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The use of 1,3-substituted imidazolium salts of the formula I in which

Catalyst for curing epoxides

1,3-substituted imidazolium salts of the formula I are used as latent catalysts for curing compostions comprising epoxy compounds: in which: R1 and R3 independently of one another are an organic radical having 1 to 20 C atoms; R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring; X is the anion of a phosphorus oxyacid, and n is 1, 2 or 3.

The use of 1,3-substituted imidazolium salts of the formula I in whichR1 and R3 independently of one another are an organic radical having 1 to 20 C atoms,R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring, andX is a thiocyanate anionas latent catalysts for curing compositions comprising epoxy compounds.

The present invention relates to a process for preparing quaternary ammonium compounds, which comprises reacting compounds comprising an sp-hybridized nitrogen atom with a dialkyl sulfate or trialkyl phosphate and subjecting the resulting ammonium compound to an anion exchange.

Method for producing quaternary ammonium compounds

A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating. The invention offers in particular economic advantages over the systems of the prior art.

Method of forming regenerated carbohydrates with solvent systems based on molten ionic liquids

In the process for preparing ionic liquids, an ionic liquid is firstly reacted with an alkoxide or with barium hydroxide and is subsequently neutralized with an acid. The ionic liquid contains a phosphonium and/or ammonium cation and an anion selected from the group consisting of halides, arylsulfonates, alkylsulfonates, sulfate, hydroxysulfate, alkylsulfates, hydrogencarbonate, carbonate. triflate and carboxylates. In this process, virtually any anions can be introduced into the ionic liquids.

Method of preparing ionic liquids

The present invention relates to a process for the preparation of solid acylphosphine oxides by converting an acylphosphine oxide which is in the form of a melt or in dispersed form into the solid state of aggregation with mechanical stress, shearing/internal agitation of the melt.

Method for producing acylphosphine oxide solids

Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base

Method for the separation of acids from chemical reaction mixtures by means of ionic fluids

The invention relates to a process for the distillation of ionic liquids, in which a pressure not higher than ambient pressure is set in a first step and the ionic liquid is heated to a temperature in the range from 60&#xb0; C. to 350&#xb0; C. in a second step. The process is employed, in particular, for the purification of ionic liquids.

Distillation of ionic liquids

The present invention relates to a solution comprising cellulose, an ionic liquid comprising anions and cations as solvent and 6-30% by weight of a nitrogen-comprising base, based on the total weight of the solution, its preparation and also its use for the physical or chemical treatment of cellulose.

Solubility of cellulose in ionic liquids with addition of amino bases

The present invention relates to a solution comprising cellulose and an ionic liquid comprising anions and cations as solvent, wherein the cations comprise at least one atom selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus which is present in protonated form, its preparation and use for physical and chemical treatment.

Cellulose solutions in ionic liquids

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Speyer, Germany

Matthias Maase