Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Metzeler Kautschuk Gmbh

Wolfgang Grape

Ottfried Schlak

Christian Lindner

Hans-Jurgen Kress

Dieter Wittmann

Horst Peters

Jochen Schoeps

Helmut Steinberger

John W Goossens

Hermann Kober

Gunter Oppermann

Heinrich Alberts

Thomas Weiss

Werner Nouvertne

Jan Mazanek

Dieter Neuray

Johannes Kaulen

Volker Hartel

Armand De Montigny

Winfried Paul

Siegfried Kussi

Kurt Feldner

Thomas Wurminghausen

Rolf Michael Braun

Franz Saykowski

Rainer Elbert

Karl-Heinz Kaesler

Jurgen Krott

Jan- Gerd Hansel

The invention describes a process for preparing alkoxylated, phosphorus-containing compounds, using heterogeneous catalysts based on metal oxides of aluminum, so that the product can be worked up anhydrously.

Preparation of phosphorus-containing alkoxylation products

The present invention relates to mixtures comprising at least one polysiloxane defoamer, at least one emulsifier, at least one nonionic surfactant, at least one polyurethane thickener and water, to a process for the production thereof and to the use thereof.

Defoamer mixtures, a process for the production thereof and the use thereof

A storage-stable aqueous emulsion of a low molecular weight, alkoxy-functional silicone resin by weight comprising approximately

Silicone resin emulsion

An organopolysiloxane of the formula ##STR1## in which x=0 to 500,

Organopolysiloxane oils

Silicone rubbers in the form of crosslinked, particulate particles can be used as a grafting base for the preparation of thermoplastic moulding materials having good low-temperature impact strength and resistance to weathering-ageing, after they are provided with an intermediate shell of crosslinked acrylate rubber.

Ageing-resistant thermoplastic moulding materials of good impact strength

Particularly high-grade blends of thermoplastic polycarbonates, graft copolymers and, optionally, further thermoplastic resins, useful as moulding materials with good low-temperature impact strength and resistance to ageing and light, which yield mouldings with superior surfaces, are obtained from graft bases which are silicone rubbers containing sulphur in addition to groups containing carbon double bonds.

Thermoplastic moulding materials having good resistance to ageing and

The invention relates to pulverulent diorganosiloxane polymers and a process for the preparation of such powders.

Diorganosiloxane polymer powder

Electroviscous fluids are disclosed which are composed of aluminum silicates particles in an electrically non-conductive liquid and a suitable dispersing agent. The atomic ratio of Al/Si on the surface of the aluminum silicate lies within the range of 0.15 to 0.80.

Electroviscous fluids

Organopolysiloxanes of the formula ##STR1## in which R is an alkyl radical having 6 to 18 C atoms,

Lubricating oil preparations

The electroviscous suspension is based on a mixture of aqueous silica gel with silicone oil as the liquid phase to which a dispersant is added. The dispersant consists of amino functional or silicon-functional polysiloxanes having a molecular weight above 800. The concentration of the dispersant is from 1 to 30% by weight and preferably from 5 to 20% by weight, based on the silica gel particles. Electroviscous suspensions such as these are distinguished by the fact that they are highly compatible with elastomeric materials, non-sedimenting, non-inflammable and physiologically acceptable. In addition, they are heat- and freeze-resistant over a wide temperature range and are largely unaffected by temperature and pressure in their viscosity.

Electroviscous liquids

The subject of the present invention is a process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups by reacting polydiorganosiloxanes containing bis-acyloxy terminal groups with diphenols in a molar ratio of 1:2 to 1:20.

Process for the preparation of polydiorganosiloxanes containing

An aqueous emulsion, having a long shelf life, of a low molecular weight silicone resin comprising by weight

A silicone emulsion which can be converted into an elastomeric product under ambient conditions by eliminating and evaporating water and alcohol or carboxylic acid, comprising by weight approximately

Stable silicone emulsions

A process for the preparation of dimethyldichlorosilane from the low-boiling and high-boiling by-products of the direct synthesis of methylchlorosilane, comprising reacting methyltrichlorosilane simultaneously with the low-boiling components having a high content of methyl groups and with the high-boiling non-cleavable components, in the presence of a catalyst, at a temperature between about 250.degree. C. and 400.degree. C. and under a pressure of up to 100 bar.

Growing community of inventors

Cologne, Germany

Wolfgang Grape