Wacker Chemie Ag

Wacker-chemie Gmbh

Huels Silicone Gmbh

Huels Aktiengesellschaft

Holger Rautschek

Willibald Burger

Richard Becker

Christian Herzig

Robert Schroeck

Harald Schickmann

Marco Kauschke

Christof Brehm

Hartmut Ackermann

Anton Heller

Josef Wimmer

Günter Beuschel

Bernward Deubzer

Uwe Scheim

Wolfgang Ziche

Marko Prasse

Otto Schneider

Uwe Dittrich

Gerhard Beer

Robert Lehnert

Ludwig Esterbauer

Gisela Liesch

Rosemarie Guehne

Harald Roesler

Heinz-Dieter Wendt

Hans-Guenther Srebny

Stephan Marrack

Elisabeth Brehm

Sebastian Kroener

Karin Haneburger

Irmgard Hofbauer

Jonas Schwarzkopf

Christine Wolf

Christian Spoerk

Erika Zscheile

Michael Messner

Hartmut Spitzner

Guenter Beuschel

Sebastian Kröner

Robert SCHRÖCK

Christian SPÖRK

Emulsions of beta-ketocarbonyl-functional organosilicon compounds

Defoamer preparations contain a polyorganosiloxane having aryl groups bonded to silicon at a ring carbon, filler particles and/or silicone resin particles, and a polyoxyalkylene polyether containing oxypropylene moieties. In addition to being efficient and compatible, the defoamer compositions retain their efficiency, especially in liquid detergents, after storage.

Defoamer compositions for detergents

Effective defoamer compositions contain two different aryl-substituted organopolysiloxanes and filler particles, and show high defoaming capability.

Defoaming compositions for detergents

Aqueous dispersions which are storage stable and cure to tack-free elastomers upon removal of water contain water, alkoxysilyl-terminated polyethers and alkoxy-functional siloxanes, optionally catalysts, fillers, and other additives customary in dispersions of organosilicon compounds.

Aqueous dispersions of organosilicon compounds

Textile fabrics are rendered water repellent yet breathable by impregnating with an organopolysiloxanes of the formulaRSiO[SiR(OR)O][SiRO][SiRRO]SiR&#x2003;&#x2003;(I).

Method for impregnating textiles with compositions containing alkoxypolysiloxane

Organopolysiloxane emulsions which are stable and of large particle size are produced in controllable fashion using a cylindrical mixer having multiple inlets and axially displaced rotor stator units.

Process for continuous production of stable silicone emulsions

A method for producing aqueous silicone emulsions containing highly viscous polyorganosiloxanes having a low content of cyclic siloxanes in several steps; the addition of acidic compounds intended to catalyze polycondensation of the polyorganosiloxanes being carried out only after an emulsion is produced in the first step exclusively with nonionogenic emulsifiers, without impairing the rate of the polycondensation reaction.

Method for producing silicone emulsions

Effective and long lasting defoamer compositions are prepared by admixing an organopolysiloxanes, a hydrophilic silica, a hydrophobic silica, optionally an organopolysiloxanes resin, and optionally a water insoluble inorganic compound, at a temperature of 50&#xb0; C. to 250&#xb0; C. until the viscosity of the composition has decreased to at least half its original viscosity prior to heating.

Method for producing antifoam compositions

Stable aqueous organosilicon dispersions particularly useful for the hydrophobing of construction materials are prepared by first preparing a homogenous mixture of organopolysiloxanes and hydrophobic silica filler, and dispersing this mixture together with an alkylalkoxysilane bearing at least one Cor greater alkyl group into water.

Aqueous emulsions of high viscosity organopolysiloxanes can be prepared having a very low content of cyclic siloxanes by condensing low molecular weight alkoxy-functional organopolysiloxanes in aqueous emulsion with an alkylphosphate emulsifier and at least one selected polyoxyethylene non-ionic surfactant.

Silicone emulsions and method for producing same

Efficient deaeration of aqueous suspensions such as those obtained during textile treatment or pulp and paper production is achieved by use of a combination of a polyoxypropylene polyether polymer or copolymer and branched polyether-polysiloxane copolymers.

Method for deaerating liquids

Superior defoamer compositions contain a low viscosity linear organopolysiloxane, a higher viscosity, optionally branched organopolysiloxane, a polyethersiloxane with a low cloud point, and both colloidal silica and fumed silica.

Antifoam compositions comprising a mixture of organopolysiloxanes

Emulsions of high viscosity silicones are prepared by emulsifying a lower viscosity condensable silicone with a partial phosphate ester surfactant, and ripening the emulsion to obtain a higher viscosity silicone dispersed phase without generation of objectional amounts of octaorganocyclotetrasiloxanes. The emulsions are well suited for body care products.

Silicone emulsions, and methods for the production thereof

Aqueous dispersions of organosilicon compounds contain:  The compositions are especially useful for the hydrophobing impregnation and mass hydrophobing of mineral and organic building materials.

Mixtures of silicone resin with an organopolysiloxane copolymer prepared by hydrosilylating a substantially linear polymer containing an isocyanate reactive group with an Si&#x2014;H containing organopolysiloxane, and reacting this intermediate with a diisocyanate, are useful as long lasting defoamers which are compatible with numerous media.

Antifoaming compositions

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Nuenchritz, Germany

Holger Rautschek