Bayer Aktiengesellschaft

Peter Kasperek

Hanns I Sachs

Peter Vehlewald

Robert Peters

Manfred Schmidt

Peter Haas

Klaus Schulte

Eberhard Konig

Manfred Kapps

Klaus K&ouml;nig

Donald R Larimer

Compositions made up of an aromatic polyisocyanate and a polyester having an average molecular weight of from about 600 to about 5000, obtainable by self-condensation of ricinoleic acid, optionally with co-utilization of a C,-C,starter polyol and optional additives. These compositions are useful as binders for the production of composite materials.

Compositions useful as binders for the production of composite materials

Method of producing press-moulding materials with polyisocyanate binders

This invention relates to a process for the preparation of compression molded materials comprising compressing a substrate with a binder based on polyisocyanates, wherein said binder comprises polyisocyanates, compounds containing at least two isocyanate reactive hydrogen atoms, and alkylene carbonates.

Process for the preparation of compression molded materials

The present invention relates to a process for the preparation of mixtures of isocyanate and water which are stable for a short time for glueing particulate material, in particular chips, fibers, or the like, in which isocyanate is injected at high pressure into the water, characterized in that the water is delivered to the site of injection as a stream under low pressure, and to an apparatus for carrying out such process.

Process and apparatus for the preparation of mixtures of isocyanate and

Aqueous polyisocyanate emulsions are made by emulsifying 5 to 70 parts by weight (on a basis of 100 parts) of a polyisocyanate which has not been modified to render it hydrophilic and emulsifiable with 30 to 95 parts by weight (on a basis of 100 parts) aqueous paraffin dispersion containing 3 to 65 wt. % paraffin, and optionally known additives in the presence of water. The water is used in a quantity such that the emulsion has a solids content of from 6 to 90 wt. %. These emulsions are particularly useful as binders in the production of molded articles.

Aqueous polyisocyanate emulsions useful as binders in the production of

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Peter Kasperek