Clariant Corporation

Commissariat a L'energie Atomique

Clariant Finance (bvi) Limited

Clariant International Ltd

Oliver Mogck

Georg Borchers

Frank Weinelt

Carsten Schaefer

Manfred Schreiber

Jean-Fran&ccedil;ois Dozol

Robert Milbradt

Laetitia Delmau

Volker B&ouml;hmer

Bernard Tournois

Nicole Simon

Christine Roussin-Bouchard

Ralf A Jakobi

Markus Grebe

Abdi Tunayar

Johannes Harder

Hendrik Buse

Timo Weide

The invention relates to polymers that can be obtained by polymerizing the monomers (A), (B), and (D), and optionally (C), where (A) is a monomer of formula (I), wherein A stands for Cto Calkylene, B stands for a Cto Calkylene different from A, R stands for hydrogen or methyl, m stands for a number from 1 to 500, n stands for a number from 1 to 500, (B) is an ethylenically unsaturated monomer that contains at least one carboxylic acid function, (C) is optionally a further ethylenically unsaturated monomer different from (A) and (B), (D) is a monomer of formula (II), wherein D stands for Cto Calkylene, E stands for a Cto Calkylene group different from D, F stands for a Cto Calkylene group different from E, R stands for hydrogen or methyl, o stands for a number from 1 to 500, p stands for a number from 1 to 500, q stands for a number from 1 to 500, and wherein the weight fraction of the monomers is 35 to 99% for the macromonomer (A), 0.5 to 45% for the monomer (B), 0 to 20% for the monomer (C), and 1 to 20% for the monomer (D), and to the use of said polymers as defoamers for inorganic solid suspensions.

Polymers and use thereof as dispersants having a foam-inhibiting effect

The invention relates to a method for producing hydrolysis-stable ammonium nitriles by reacting a compound of formula (1), wherein R, R, and Rare identical or different and represent linear or branched C&#x2013;C-alkyl groups, C&#x2013;C-alkenyl groups, substituted or non-substituted benzyl or C&#x2013;C-alkoxy-C&#x2013;C-alkyl groups, or wherein Rand R, together with the nitrogen atom to which they are bonded, form a ring with 4 to 6 C-atoms which can be substituted with C&#x2013;Calkyl, C&#x2013;Calkoxy, C&#x2013;Calkanoyl, phenyl, amino, ammonium, cyano, cyanamino, chlorine or bromine and which can contain in addition to the nitrogen atom, instead of the carbon atoms, one or two oxygen or nitrogen atoms, a group N&#x2014;Ror a group R&#x2014;N&#x2014;R, wherein R6 is hydrogen, C&#x2013;C-alkyl, C&#x2013;C-alkenyl, C&#x2013;C-alkinyl, phenyl, C&#x2013;C-aralkyl, C&#x2013;C-cycloalkyl, C&#x2013;C-alkanoyl, cyanomethyl or cyan, Rand Rare hydrogen, C&#x2013;C-alkyl, C&#x2013;C-alkenyl, C&#x2013;C-alkoxy-C&#x2013;C-alkyl, phenyl or C&#x2013;C-alkylphenyl, preferably hydrogen, methyl or phenyl, Respecially meaning hydrogen when Rdoes not mean hydrogen, and X represents an anion; with an alkaline or ammonium salt of an alkane sulfonate, paraffin sulfonate, aryl sulfonate, alcohol sulfate or fatty acid alkyl carboxylate in the presence of water, at a high temperature

Method for producing hydrolysis-stable ammonium nitriles

Particulate bleach activators comprising 15 to 60% by weight of an acetonitrile, 20 to 70% by weight of a silicon-containing carrier material and 20 to 30% by weight of water, which are obtained by applying an aqueous solution, saturated at 10 to 40&deg; C., of an acetonitrile onto the carrier material without subsequent drying, where the amount of saturated aqueous solution is measured such that the given limits for acetonitrile, carrier material and water are observed.

Particulate bleach activators based on acetonitriles

The invention involves the separation of actinides and lanthanides by membrane transport by means of a calixarene. To this end, a first aqueous solution containing at least one metal from the group of actinides and lanthanides to be separated is placed in the compartment,and a second aqueous re-extraction solution such as a 10,mol/L solution of HNO,is placed in the compartment,. The membrane,is a microporous membrane of which the pores are filled with a liquid organic phase (calixarene and diluent) chosen in order to favour membrane transport of the metal(s) to be separated from compartment,to compartment

Method for separating actinides and lanthanides by membrane transport using a calixarene

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Burgkirchen, Germany

Oliver Mogck