Bayer Aktiengesellschaft

Heraeus Kulzer Gmbh & Co. Kg

Ottfried Schlak

Wolfgang Grape

Peter Schwabe

Hermann Kober

Hans-Heinrich Moretto

Armand De Montigny

Reiner Voigt

Ulrich R Grigo

Jens Winkel

Johannes Kaulen

Gebhard Wagner

Hans-Horst Steinbach

Jurgen Ackermann

Dieter Freitag

Karl-Heinz Ott

Wolfgang Podszun

Heinrich Alberts

Rainer Weber

Werner Nouvertne

Karsten J Idel

Rainer A Guggenberger

Oswald Gasser

Friedemann Muller

Gunter Buxbaum

Bernd Klinksiek

Franz Hund

Jurgen Reiners

Helmut Steinberger

John Mitchell Huggins

Karl Fuhr

Wolfgang Cohnen

Kaspar Hallenberger

Wilfried Burow

Jurgen Kischkewitz

Karl-Heinz Mitschke

Klaus Pohmer

Werner Clarenz

Bernd Peltzer

Peter Horlacher

Siegfried Kussi

Lutz Leitner

Christoph Holzner

Thomas Wurminghausen

Reinhold Dederichs

Otto-Christian Geyer

Franz Saykowski

Rolf Michael Braun

John L Williams

Gottfried Knispel

Werner Michel

William C Bushong

Hans-Georg Adams

Bernard Munchenbach

Karlheinz Stachulla

Dieter Wecker

Willi Burgmer

Johannes Jezierski

Rosemarie Grizan

Wolfgang Schneider

Karl H Kasler

Process for extracting aqueous ketazine solutions which is carried out using an aqueous ketazine solution having a salt content of 5 to 27% by weight and an ammonia content of 0 to 28% by weight to extract at temperatures of 50 to 120&deg; C., which is characterized in that the ketazine solution to be extracted has a molar excess of 50 to 200% of ketone based on the ketazine to be extracted, and that an aliphatic hydrocarbon extractant is used which has a boiling point of 150 to 300&deg; C. at atmospheric pressure.

Extraction of ketazine solutions

Preparation of triethyl phosphate

A thermoplastic moulding composition containing at least one sinterable ceramic or metal powder and a mixture of thermoplastic binders, wherein one of the binders is a silicone resin and the second binder is an organic resin. The silicone resin has the a softening point of 40.degree. to 150.degree. C. and an average formula of:

Thermoplastic moulding compounds, a process for their preparation and a

Preparing O,O'-diesters of thiophosphoric acid, O-monoesters of thiophosphonic acid or thiophosphinic acids and their salts, from diesters of phosphorous acid, monoesters of phosphorous acids or phosphinous acids and sulphur in the presence of an aqueous solution of an auxiliary base. The solutions can be used in further syntheses or as extraction agent for cations.

Synthesis of an O,O' -diesters of thiophosphoric acid, an O-ester of

It has been found that silicone resins which contain alkoxy functional groups and harden rapidly in the presence of moisture allow suitable one-component formulations as provisional fixing materials. The hardening rate can be adjusted by addition of suitable activators.

Provisional luting materials

Waterproofing agents for mineral building materials based on aqueous emulsions of organo-silanes and/or organosiloxane resins containing reactive groups in which the disperse phase has an average particle size of 0.55 to 1.1 .mu.m and a scope of particle size range of less than 1.3.

Impregnating emulsion for mineral building materials

The invention relates to an improved process for the production of liquid amine adducts of fluorine-containing amides, in which the compounds are synthesized in the absence of solvents in two process steps without the synthesis of intermediate products.

Process for the production of liquid amine adducts of

The invention relates to a process for the production of paints and pargets having high early water resistance and comprising inorganic fillers, pigments, silicone resin, and a polymeric binder wherein

Facade paints and pargets having high early water resistance

Low temperature lubricating oils are fluorosiloxane compounds of the formula

Low-temperature lubricating oil

The present invention is directed to optionally cellular, molded polyurethane plastics having a solid surface and characterized by a content of about 0.1 to 8.0% by weight, based on the weight of the polyurethane plastic, of a polysiloxane which is chemically incorporated into the polyurethane structure. The present invention is also directed to a process for the production of these molded plastics by reacting in closed molds a reaction mixture containing

Molded polyurethane plastics, a process for their production and their

The present invention relates to a process for the preparation of polydiorganosiloxane block copolycarbonates having special bridging members between the siloxane blocks and the carbonate blocks, and the polydiorganosiloxane block copolycarbonates which are obtainable by the process according to the invention and with which optionally further customary additives can be mixed.

Special diorganosiloxane block copolycarbonates

The invention relates to powder-form polymer mixtures of silicone resins (B) and thermoplastic polymers (A), to their production and to their use for the modification of thermoplatics.

Use of silicone resins as flameproofing agents

The present invention relates to optically clear polysiloxane-based compositions which are employed, in particular, for the production of contact optical articles such as contact lenses, scleral lenses and intraocular lenses.

Optically clear silicone compositions

An inorganic pigment comprising a content of at least 0.1% by weight and at most 5% by weight of one or more polyorganosiloxanes, wherein the polyorganosiloxanes have viscosities of 10 to 100,000 mPa.s and a relative molecular weight of 500 to 500,000, have no reactive or crosslinking groups, contain at least one C.sub.9 -C.sub.25 Si-alkyl and/or one C.sub.9 -C.sub.25 Si-aryl group per molecule, the total content of these groups in the polyorganosiloxane being 7-70% by weight and the other organic radicals contained in the polyorganosiloxane having 1 to 8 carbon atoms. Such pigments can be used in lacquers, emulsion paints, plastics, toners, magnetic recording materials, building materials and enamels.

Storage-stable inorganic pigments containing specific

In a silicone impression and duplicating composition which undergoes crosslinking at ambient temperature by an addition reaction, comprising (a) an organopolysiloxane possessing two or more vinyl groups in the molecule, (b) optionally an organopolysiloxane without reactive groups, (c) an organopolysiloxane possessing two or more Si-H groups in the molecule, (d) a catalyst, (e) a filler and, (f) optionally an auxiliary and/or colorant, the improvement wherein polysiloxane components (a)-(c) contain not more than about 1.5% by weight of volatile oligomers, whereby the dimensional stability of impressions is improved.

Dimensionally stable impression compositions

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Cologne, Germany

Ottfried Schlak