Evonik Operations Gmbh

Sarah Otto

Frank Schubert

Michael Fiedel

Stefanie Redeker

Annett Halbhuber

Jana Blüm

Michael Ferenz

Frauke Henning

Philippe Favresse

Matthias Lobert

Carsten Schiller

Alexander Schulz

Thorsten Schierle

Sabine Kömmelt

Frank Dzialkowsky

Michael Wagner

Heike Semmler

Andreas Stüttgen

Heike Hahn

Dirk Wojtasik

Michael Urban

A defoamer composition contains a compound based on polybutadiene having at least one repeat unit selected from the divalent radicals:

Defoamer composition based on organofunctionally modified polybutadienes

A process can be used for preparing polyether-modified polybutadienes. The process involves reacting at least one polybutadiene (A) with at least one epoxidizing reagent (B) to give at least one epoxy-functional polybutadiene (C). The at least one epoxy-functional polybutadiene (C) is then reacted with at least one hydroxy-functional compound (D) to give at least one hydroxy-functional polybutadiene (E). The at least one hydroxy-functional polybutadiene (E) is finally reacted with at least one epoxy-functional compound (F) to give at least one polyether-modified polybutadiene (G).

Polyether-modified polybutadienes and processes for preparation thereof

Compositions for producing a rigid polyurethane foam are described, comprising at least one isocyanate component, a polyol component, optionally a catalyst which catalyzes the formation of a urethane or isocyanurate bond, wherein the composition has hydrocarbons having 3, 4 or 5 carbon atoms, hydrofluorocarbons, hydrofluoroolefins (HFO), hydrohaloolefins, oxygen-containing blowing agents and/or chlorohydrocarbons as blowing agent, and also comprises acrylate and/or methacrylate copolymers as foam stabilizers.

Production of polyurethane foam

Compounds are based on polyether-modified polybutadiene, where the polyether-modified polybutadiene contains repeat units selected from the divalent radicals: The radical B has at least one ester group.

Polyester-polyether-modified polybutadienes and processes for preparation thereof

A universal adhesion promoter contains a compound based on polybutadiene having at least one repeat unit selected from the following divalent radicals:

Universal adhesion promoter based on organofunctional modified polybutadienes

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Essen, Germany

Sarah Otto