Wacker-chemie Gmbh

Rudolf Braun

Karl Braunsperger

Stefan Oberneder

Herbert Sollradl

Petra Absmaier

Johann Steiner

Bernward Deubzer

Michael Stepp

Otto Schneider

Rudolf Hager

Johann Mueller

Horst Muller

Robert Braunsperger

Werner Brennenstuhl

Matthias Wolfgruber

Ludwig Hager

Herbert Soellradl

Alfred Heinrich

Gerhard Staiger

Helmut W&ouml;hrl

Werner Trajer

Thomas Felber

Process for the continuous preparation of moisture-curing organopolysiloxane compositions

Aqueous dispersions of organopolysiloxanes comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water. The stable aqueous dispersions of the present invention cure to form transparent films.

Aqueous dispersions of organopolysiloxanes

A process for the continuous preparation of organopolysiloxane by condensation and/or equilibration reaction of organosilicon compounds comprising in a first step

Process for the continuous preparation of organopolysiloxanes

The invention relates to a process for stabilizing organopolysiloxanes which contain phosphazenes and/or their reaction products which promote the condensation and/or equilibration of organopolysiloxanes. To stabilize any previously known organopolysiloxanes which contain phosphazenes and/or their reaction products against re-arrangements and also molecular weight changes and viscosity changes resulting therefrom, it is proposed that the said phosphorus compounds be brought into contact with at least one non-basic, solid adsorbent.

Process for stabilizing organopolysiloxanes

Organo(poly)siloxane compositions which can be cross-linked to give

Organo(poly)siloxanes composed of units of the formula [R.sub.a R.sup.1.sub.3-a SiO.sub.1/2 ], [R.sub.b R.sup.1.sub.2-b SiO.sub.2/2 ] and [R.sup.1 SiO.sub.3/2 ], in which R can be the same or different and represents a monovalent organic radical which is free from aliphatic carbon-carbon multiple bonding, R.sup.1 can be the same or different and represents a monovalent organic radical which has at least one aliphatic carbon-carbon multiple bond, a is 0, 1 or 2 and b is 0 or 1.

Alkenyl group-containing organo(poly)siloxanes

Organo(poly)siloxanes containing terminal siloxane units having

Aqueous dispersions of organopolysiloxanes containing the following components:

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Kastl, Germany

Rudolf Braun