Evonik Goldschmidt Corporation

Goldschmidt Gmbh

Evonik Degussa Gmbh

Thomas Neumann

Sascha Herrwerth

Wilfried Knott

Michael Ferenz

Burghard Gruening

Ingrid Eissmann

Isabella Ulrich-Brehm

Anna Howe

Dana Adkins

Jerry Reddinger

Arndt Brueckner

Jutta Esselborn

Anna M Howe

Dana C Adkins

Jerry L Reddinger

Hardi Döhler

The invention relates to crosslinked organopolysiloxanes which are linked by a polyether building block via the Si atoms, to emulsifier systems which have these crosslinked organopolysiloxanes, and also to cosmetic, dermatological or pharmaceutical formulations comprising a crosslinked organopolysiloxane or an emulsifier system comprising these.

Crosslinked polysiloxanes, a process for their preparation and use of the crosslinked polysiloxanes in emulsifier systems for water-in-oil emulsions

The invention provides a process for preparing SiOC-bonded polyorganosiloxanes by reacting, by processes known per se, hydroxyl-containing compounds with a stoichiometric excess of polyorganosiloxanes which contain &#x2014;Si(H) units and are of the general formula (I) in the presence of one or more element compounds of main group III and/or of transition group 3 as a catalyst, wherein the reaction, on completion of conversion of the compounds containing hydroxyl groups, is continued until no further &#x2261;Si&#x2014;H groups are detectable by gas volumetric means, and also the compounds prepared in this way and their use.

Process for reacting polyorganosiloxanes and their use

The invention relates to a process for the dehydrogenative condensation of alcohols and siloxanes which have at least one hydrogen atom bound to a silicon atom in the molecule, wherein at least one quaternary ammonium hydroxide is used as effective catalyst in this reaction.

Process for preparing organically modified polyorganosiloxanes

The invention relates to a catalytic system for the dehydrogenative condensation of polyorganosiloxanes with alcohols, consisting of at least one boron compound and at least one synergistically active compound, and to a process for converting polyorganosiloxanes, in which one hydrogen atom bonded to the silicon is replaced by an alkoxide radical using the inventive catalytic system.

Catalytic system for the dehydrogenative condensation of polyorganosiloxanes with alcohols and a process for preparing organically modified polyorganosiloxanes

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Bochum, Germany

Thomas Neumann