Basf Aktiengesellschaft

Elastogran Polyurethane Gmbh

Peter Roche

Christian Maletzko

Ulrich Treuling

Georg Knoblauch

Thomas Bartz

Edwin Baumann

Mathaeus Rank

Herbert Liebl

Matthaeus Rank

Ilka Renate Beuermann

Hans-Peter Frei

Compact veneer based on polyisocyanate polyaddition products

Compact, transparent polyisocyanate polyaddition products are produced in a process by reacting (a) isocyanates with (b) compounds reactive to isocyanates, if desired in the presence of (c) catalysts and (d) auxiliaries and/or additives, which comprises using as (b) compounds reactive to isocyanates a mixture (i) which has an average functionality of >3 and an average hydroxyl number of from 300 to 950 mg KOH/g.

Compact, transparent polyisocyanate polyaddition products

The present invention relates to a process for the preparation of coatings by reacting polyurethane single component systems, which preferably contain at least one prepolymer containing NCO groups in bonded form and a latent hardener, whereby the polyurethane single component system is mixed with steam at a temperature from 100.degree. C. to 500.degree. C., and fed under a pressure of 0.5 to 10 bars, and finally sprayed using a general spray method. The coatings so formed cure bubble free independent of the moisture content of the surroundings and without exhibiting coating mass runoff.

Process for the preparation of coatings from polyurethane single

The invention relates to a process for the preparation of cellular or noncellular plastics, preferably polyurethane coatings, by reacting at least two components with one another, preferably organic polyisocyanates and polyhydroxyl compounds, by feeding the components into a mixing zone separately, and mixing them together and then discharging the reaction mixture from the mixing zone, while adding air heated to a temperature of 100.degree. to 1200.degree. C. to the reaction mixture as it emerges from the mixing zone.

Process for the preparation of cellular or noncellular plastics from at

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Munich, Germany

Peter Roche