Bayer Aktiengesellschaft

Robert Peters

Klaus Schulte

Hanns I Sachs

Peter Kasperek

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

The invention relates to an apparatus for producing a reaction mixture containing a filler from at least two components which are capable of flowing, and in particular for producing polyurethane. The filler is added to the reaction mixture dry in the form of powder, fine particles or fibers.

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Cologne, Germany

Robert Peters