Evonik Operations Gmbh

Evonik Degussa Gmbh

Evonik Goldschmidt Corporation

Evonik Industries Ag

Goldschmidt Gmbh

Huntsman P&a Germany Gmbh

Venator Germany Gmbh

Evonik Specialty Chemicals Co., Ltd.

Frauke Henning

Wilfried Knott

Horst Dudzik

Michael Ferenz

Frank Schubert

Jan Caßens

Sadik Amajjahe

Stefan Silber

Jürgen Meyer

Helmut Ritter

Kathrin Lehmann

Andrea Lohse

Michael Fiedel

Christian Hartung

Jörg Peggau

Martin Glos

Sascha Herrwerth

Philippe Favresse

Dagmar Windbiel

Roland Hubel

Christian Eilbracht

Dirk Kuppert

Carsten Schiller

Annegret Terheiden

Christian Mund

Hardi Doehler

Ulrike Mahring

Juergen Meyer

Hans Henning Wenk

Oliver Thum

Klaus-Dieter Klein

Ewald Gerhard Sieverding

Joachim Venzmer

Matthias Naumann

Matthias Lobert

Thomas Ebbrecht

Berend-Jan De Gans

Patrick Winter

Sarah Schmitz

Katrin Roland

Pedro Cavaleiro

Hardi Döhler

Frank Koenig

Ralph Scheuermann

Bernd Rohe

Joerg Peggau

Alexandra Trambitas

Sarah Otto

Petra Fritzen

Markus Roos

Bastian Matthias Brugger

Stefan Busch

André Brötzmann

Stefanie Redeker

Jörg Hocken

Olga Jazkewitsch

Tim-Frederic Sloot

Ute Linke

Gabriele Platte

Sabine Krusenbaum

Angela Nawracala

Jan Cassens

Sarah Krauskopf

Astrid Zündorff

Fuming Chen

Heike Hahn

Frank Dzialkowsky

Sarah Radloff

Florian Gaber

Arndt Brückner

Joerg Hocken

Eva Emmrich

Kai Steenweg

Bjoern Eicke

Volker Arning

Kerstin Klein

George-Hans Bayne

Anke Reinschmidt

Manfred Klincke

Björn Eicke

Astrid ZÜNDORFF

Hardi Dohler

Astrid Zundorff

Jorg Peggau

Michael Urban

Berit Knudsen

Thiemo Mennenga

Dirk Wojtasik

Specific siloxanes, compositions containing these specific siloxanes, and processes for preparation thereof, are useful for treatment of fabrics, in cleaning and care formulations for the household and for industrial purposes, and in cosmetic, pharmaceutical and dermatological compositions, especially in cosmetic cleansing and care formulations, hair treatment products and hair aftertreatment products, and for cleaning and care of hard surfaces, preferably for cleaning and care of motor vehicles, especially as additive in drying aids for carwash facilities.

Siloxanes for treating textiles and for use in cleaning and care formulations

A process can be used for preparing polyether-modified polybutadienes. The process involves reacting at least one polybutadiene (A) with at least one epoxidizing reagent (B) to give at least one epoxy-functional polybutadiene (C). The at least one epoxy-functional polybutadiene (C) is then reacted with at least one hydroxy-functional compound (D) to give at least one hydroxy-functional polybutadiene (E). The at least one hydroxy-functional polybutadiene (E) is finally reacted with at least one epoxy-functional compound (F) to give at least one polyether-modified polybutadiene (G).

Polyether-modified polybutadienes and processes for preparation thereof

Curable composition for producing coating systems having an anti-adhesive property containing at least one film-forming polymer and at least one organo-modified, branched siloxane of formula (I) or mixtures thereof.

Curable composition for coatings having an anti-adhesive property

SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers of formula (I) C&#x2014;B-(AB)&#x2014;C1 are produced by reaction of end-equilibrated &#x3b1;,&#x3c9;-diacetoxypolydimethylsiloxanes with a mixture including at least one polyether polyol, preferably a polyether diol, and at least one polyether monool or at least one monohydric alcohol.

Process for producing polyoxyalkylene polysiloxane block polymers

Processes are described for purifying acidic, preferably superacidic, in particular trifluoromethanesulfonic acid-acidified, end-equilibrated acetoxysiloxanes, wherein the acidic, preferably superacidic, in particular trifluoromethanesulfonic acid-acidified, acetic anhydride-containing and optionally acetic acid-containing equilibrated, preferably end-equilibrated acetoxysiloxane, which is optionally dissolved in an inert solvent, is contacted with a base, the precipitate is filtered off thereafter and then the filtrate obtained is optionally purified by distillation.

Process for purifying acetoxysiloxanes

Disclosed are organomodified polysiloxanes, compositions, in particular fuel compositions, that include these organomodified polysiloxanes, and the use of the organomodified polysiloxanes for the defoaming of fuels.

Organomodified polysiloxanes and their use for defoaming fuels

Equilibrated trifluoromethanesulfonic acid-acidified &#x3b1;,&#x3c9;-diacetoxypolydimethylsiloxanes, processes for the production thereof and SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA and a process for the production thereof are described, wherein the production of SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA is effected by reacting trifluoromethanesulfonic acid-acidified acetoxysiloxane with polyetherols optionally in the presence of buffer mixtures and optionally an additional condensation catalyst and optionally in the presence of an inert solvent.

Linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA

Equilibrated trifluoromethanesulfonic acid-acidified &#x3b1;,&#x3c9;-diacetoxypolydimethylsiloxanes, processes for the production thereof and SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA and a process for the production thereof are described, wherein the production of SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA is effected by reacting trifluoromethanesulfonic acid-acidified acetoxysiloxane with polyetherols optionally in the presence of bases and optionally in the presence of an inert solvent.

Described is a process for producing preferably trifluoromethanesulfonic acid-acidified, end-equilibrated, acetoxy-bearing siloxanes which comprises reacting cyclic siloxanes, in particular comprising Dand/or D, and/or cyclic branched siloxanes of the D/T type with acetic anhydride using preferably trifluoromethanesulfonic acid as catalyst and with addition of acetic acid, wherein the cyclic branched siloxanes of the D/T type are mixtures of cyclic branched siloxanes of the D/T type which contain not only siloxanes comprising D and T units but also siloxanes comprising Q units.

Process for producing acetoxy-bearing siloxanes

Branched SiOC-linked polyethersiloxanes have the following formula (I) where Ris an alkyl radical having 1 to 4 carbon atoms or a phenyl radical, but preferably 90% of the radicals Rare methyl radicals; b has a value of from 1 to 10; a has a value of from 1 to 200, preferably 10 to 100, a value of from 3 to 70 when b is &#x2265;1 and &#x2264;4, or a value of from 3 to 30 when b is &#x3e;4; and Rdenotes identical or different polyether radicals, but at least one radical Ris a structural element radical of formula (II): where p=at least 2, preferably p=2-6, particularly preferably p=3.

SiOC-based polyethersiloxanes

Described is a process for producing preferably trifluoromethanesulfonic acid-acidified, end-equilibrated, acetoxy-bearing siloxanes which comprises reacting cyclic siloxanes, in particular comprising Dand/or D, and/or cyclic branched siloxanes of the D/T type with acetic anhydride using preferably trifluoromethanesulfonic acid as catalyst and with addition of acetic acid, wherein the cyclic branched siloxanes of the D/T type are mixtures of cyclic branched siloxanes of the D/T type which may contain not only siloxanes comprising D and T units but also siloxanes comprising Q units.

Described is a process for producing trifluoromethanesulfonic acid-acidified, end-equilibrated, acetoxy-bearing siloxanes which comprises reacting cyclic siloxanes, in particular comprising Dand/or D, and/or cyclic branched siloxanes of the D/T type with acetic anhydride using trifluoromethanesulfonic acid as catalyst and with addition of acetic acid.

Described is a method for synthesizing polymer compounds (P), preferably polysiloxanes, comprising at least one carboxylic ester group, in particular (meth)acrylate-containing polysiloxanes, said method being carried out in the presence of conversion products (U) of metal salts, in particular chromium(III) salts, and conversion products of aldehydes and primary amines.

Curable polymers

Crosslinked aminosiloxanes obtainable by reaction of identical or different aminosiloxanes with identical or different epoxide components which are water-soluble hydrocarbons, the hydrocarbons comprising oxygen as well as carbon, and optionally further elements selected from nitrogen, sulphur and phosphorus, the hydrocarbon having on average more than one terminal epoxy group, the epoxy group being a carbooxirane radical, and, further, not more than 50% of all the amino groups having undergone reaction with an epoxide group.

OEM textile finishing compositions

The invention relates to polymer compositions containing inorganic or organic particles which either have been surface-treated before the production of the compositions or are dispersed by special polyether-modified siloxanes through the production of the compositions.

Surface treatment of particles and their use

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Essen, Germany

Frauke Henning