Bayer Aktiengesellschaft

Metzeler Kautschuk Gmbh

Johannes Blahak

Jan Mazanek

Peter Haas

Erwin Muller

Kuno Wagner

Hans-Joachim Meiners

Hans Hubner

Lothar Preis

Roland Gipp

Rolf Dhein

Hanns P Muller

Manfred Schreckenberg

Rolf Wiedermann

Werner Mormann

Helmut Kleimann

Hermann Menk

Karl Hartwig Richert

Dieter Arlt

Wulf Von Bonin

Walter Meckel

Artur Reischl

Ulrich Von Gizycki

Manfred Kapps

Heinz Ziemann

Peter Seifert

Heinz Thomas

Hans J Meiners

Georg Dehmel

Johannes Koster

Robert Zollner

Uwe Dobereiner

Wolfgang Ebner

Kuuno Wagner

Interpenetrating polymer networks prepared from 60 to 99.9% by weight, of a thermoplast and 0.1 to 40% by weight of a thermosetting resin which comprises:

Thermosetting cyanate resin and the use thereof for the production of

Polyurethane-based matrix materials are made by reacting a phenol which is at least bifunctional with an aromatic isocyanate which is at least difunctional in the presence of 1-40 wt. % soft segment former. The soft segment former is a compound containing long chain aliphatic groups having at least six carbon atoms in the aliphatic group, an isocyanate-reactive group and a molecular weight of from 800 to 10,000. From 90 to 130 equivalent percent of isocyanate groups (based on the total of isocyanate-reactive groups present in the phenol and soft segment former) are employed. These matrix materials are particularly useful in the production of composite materials and as adhesives.

Matrix materials and a process for their preparation

This invention relates to a thermosetting resin of either (a) at least one polycyanate and (b) at least one polyester polyol or of (c) a prepolymer of (a) and (b) and to the use thereof for the production of composite materials and of interpenetrating polymer networks (IPNs).

Molded body of vulcanized rubber having firmly adhering varnish layer produced by applying a coating of varnish which has a compound with a member which will on subsequent vulcanization participate in the vulcanization reaction, to the surface of the unvulcanized molded body. Subsequently vulcanizing the coated molded body to cause the member to participate in the vulcanization and produce a vulcanized rubber molded body with a firmly adhering varnish layer.

Molded bodies of vulcanized rubber having a vulcanized-on layer of

The instant invention is directed to novel compounds and the use thereof in producing polyurethane resins. The compounds generally correspond to the following formula: ##STR1## wherein n is an integer of from 1 to 5,

Odorless catalysts for the synthesis of polyurethanes

Novel, finely divided, redispersible dispersions of high melting polyesters in low melting polyhydroxyl compounds are disclosed. Disclosed also is a process for their preparation and their use as polyol components containing fillers in the production of cellular or non-cellular polyurethanes.

Dispersions of high melting polyesters in polyhydroxyl compounds, a

A release agent applied to the surface of a mold in the form of a film to permit ready removal of plastic, particularly polyurethane, from the mold. The release agent contains a film-forming substance having an affinity to the plastic and becomes attached to the plastic and is removed with the plastic when taken out of the mold thereby preventing buildup of film-forming substance in the mold. A cross-linking agent and/or a cross-linking catalyst and/or emulsifier and/or tenside may advantageously be incorporated in the release agent.

Release agent for removing plastics, especially polyurethane plastics

The instant invention is directed to hexahydrotriazine carboxylates, a method for their preparation, and their use as catalysts in the production of polyisocyanurate plastics.

Hexahydrotriazine carboxylates and the use thereof as catalysts in the

Polyurethane elastomeric foam by foaming a prepolymer or polyisocyanates and compounds having at least two hydrogen atoms reactive to isocyanates, and a chain-lengthening polyamine agent, in the presence of an expanding agent containing a component reactive with the polyamine chain-lengthening agent or with the products of reaction thereof with polyisocyanates, and split-off gas.

Cellular elastomeric foams and method of production using an expanding

The invention relates to compositions containing both amino groups and hydroxyl and/or mercapto groups. The products are obtained by reacting relatively high molecular weight polyols and/or polythiols with less than equivalent quantities of isatoic acid anhydride.

Polymer containing amino groups and hydroxyl and/or mercapto groups and

A process is disclosed for producing polyurethane resins using novel catalysts selected from the group consisting of a process for the production of cellular or non-cellular polyurethane resins comprising reacting:

The production of polyurethane resins and laminates

This invention relates to new high molecular weight polyurethanes which contain a very small amount of urethane and urea groups. These new synthetic resins are built up as block copolymers and contain relatively high molecular weight segments which are derived from high melting and low melting polyols and linked together through ester and/or urethane and/or urea groups.

Segmented polyurethane resins

Process for the preparation of new segmented polyurethane resins derived

Polymers containing amino groups and hydroxyl and/or mercapto groups and

Growing community of inventors

Cologne, Germany

Johannes Blahak