Wacker Chemie Ag

Christof Brehm

Elisabeth Hoelzlwimmer

Richard Becker

Holger Rautschek

Willibald Burger

Wolfgang Ziche

Markus Merget

Anton Heller

Robert Schroeck

Peter Horvath

Gerhard Beer

Werner Limmer

Martina Joachimbauer

Christine Stalleicher

Franz Wimmer

Elisabeth HÖLZLWIMMER

Emulsions of aminosiloxanes and silicates

Aqueous nanoemulsions of carbamato-functional organopolysiloxanes prepared using a polyoxyethylene emulsifier having an HLB greater than 15 and at least 40 oxyethylene moieties and having a Dparticle size &#x2264;100 nm are transparent, stable, and useful in cosmetic compositions, particularly hair care compositions.

Aqueous emulsions of carbamato-functionalized organopolysiloxanes

Compositions containing &#x3b2;-ketocarbonyl-functional organopolysiloxanes, aminoalkyl-functional organopolysiloxanes, and optionally an organometallic compound provide textiles with high and lasting water repellency.

Compositions comprising beta-ketocarbonyl-functional organosilicon compounds

Storage stable aqueous dispersions of &#x3b2;-ketocarbonyl functional organosilicon compounds are prepared using a non-ionic emulsifier having an HLB of less than 15. The compositions are suitable for treating textiles.

Dispersions of &#x3b2;-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

Defoamer compositions containing a plurality of defined organopolysiloxanes exhibit very short initial foam collapse and yet exhibit long lasting defoaming activity when added to aqueous media prone to foaming.

Defoaming formulations containing organopolysiloxanes

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

Defoaming compositions for detergents

Emulsions of carbamato-functional organopolysiloxanes emulsified with the aid of cationic emulsifiers are useful for treating textiles to provide good haptic properties, and also in hair care products.

Compositions comprising carbamate functionalized organopolysiloxanes and cationic surfactants

Efficient defoamer and foam prevention formulations contain an organopolysiloxane defoamer and an efficiency promoting waxy &#x3b2;-ketocarbonyl-functional organosilicon compound. The compositions also preferably contain a filler and a silicone resin, and are highly efficient in surfactant-containing aqueous systems such as detergents and cleaners.

Process for defoaming aqueous compositions containing surfactants

A mixture of unique organopolysiloxane, filler, and additional components are effective defoamers and may be used neat, or in the form of a powder or emulsion.

Defoamer formulations comprising organopolysiloxanes

The invention provides a process for preparing emulsions of organopolysiloxanes (O), which includes polymerizing: (1) 100 parts by weight of hydroxyl-terminated organopolysiloxanes and (2) at least 0.01 part by weight of trialkylsilyl-terminated organopolysiloxanes having a viscosity of at least 55 mm/s in the presence of (3) acidic catalyst and (4) emulsifier in an aqueous medium until the desired molecular size is reached.

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Burghausen, Germany

Christof Brehm