Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Ulrich Litzinger

Reinhold M Klipper

Bernhard Lehmann

Wolfgang Podszun

Winfried Joentgen

Torsten Groth

Rudiger Schubart

Michael Schelhaas

Udo Herrmann

Thomas Menzel

Georg Martin

Rudolf Wagner

Hans-Karl Soest

Thomas Augustin

Rolf Kehlenbach

Ralf Moritz

Hanfried Treffurth

Hans Karl Soest

The present invention relates to novel amphoteric ion exchangers which possess not only phthalamide groups of the formula (I) but also &#x2014;(CH)NRRgroups and/or if appropriate &#x2014;(CH)NRRRgroups, wherein m is an integer from 1 to 4 and R, R, Rin each case independently of one another are hydrogen, &#x2014;CH, &#x2014;CHCH, &#x2014;CHCHCH, benzyl, &#x2014;OCHCHor &#x2014;CHCHOH and X is H or Na or K, to a process for production thereof and also use thereof.

Amphoteric ion exchangers

The present invention relates to mixtures of substances based on organopolysiloxane polyethers and at least one further substance or component, preferably a polymer obtained from aqueous suspension, particularly preferably crosslinked functionalized polystyrene polymer beads, and also to the use of such mixtures of substances based on organopolysiloxane polyether together with crosslinked functionalized polystyrene polymer beads as free-flowing ion exchangers or free-flowing adsorbers, particularly preferably free-flowing monodisperse or heterodisperse anion exchangers or cation exchangers, but also free-flowing mixtures of anion and cation exchangers.

Mixtures of substances

The plasticity of ceramic compositions and dispersions can be improved by addition of at least one polymer (I) with recurring succinyl units. This effect can be reversed by addition of a setting accelerator (II); preferred setting accelerators are polymers (II) of the polyalkylenepolyamine type.

Process for improving the plasticity of ceramic composition and for

Oil emulsions are broken in a particularly advantageous manner by adding to them a breaker which comprises poly-DADMAC and polyalkylenepolyamines.

Process for breaking oil emulsions

The process according to the invention for the separation of oil-in-water emulsions by treatment of the emulsions with organic ionic demulsifiers and/or inorganic demulsifiers comprises carrying out the separation in two steps by first adding an organic cationic demulsifier to the o/w emulsions, and then adding an inorganic demulsifier, separating the oil phase from the resulting two-phase system and then treating the aqueous phase first with an inorganic demulsifier and then with an organic anionic demulsifier.

Process for the separation of oil-in-water emulsions

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Hachenburg, Germany

Ulrich Litzinger