Bayer Aktiengesellschaft

Miles Inc.

Joachim Werner

Walter Meckel

Dirk Wegener

Ulrich Liman

Horst Stepanski

Jose Colinas-Martinez

Werner Rasshofer

James W Rosthauser

Armin Zenner

Wolfgang Patzold

The present invention relates to polyurethanes with softening temperatures above 80.degree. C. which are NCO-free, which are reactive via masked isocyanates, which are essentially linear and extensively pre-lengthened, and their preparation. The polyurethanes can be used as powders which can be processed like thermoplastics and post-cured.

Reactive polyurethanes

The invention relates to expandable polyurethane powder preparations containing blowing agents and to their use for the production of foamed polyurethane moldings.

Expandable polyurethane powder preparations containing blowing agents

Novel powders useful in the slush molding process are produced by reacting an emulsion of either an isocyanate or an isocyanate reactive material with either an isocyanate reactive material or an isocyanate, depending upon the nature of the component used to make the emulsion in the presence of an at least partially blocked isocyanate and an organic carrier. The final reaction product is subsequently removed from the carrier.

Free-flowing, thermoplastically processible and post-crosslinkable

The invention relates to a moisture-curing, NCO-reactive polyurethane hotmelt adhesive composition to a process for its production and to its use as an adhesive wherein the hot-melt adhesive characterized by a reaction product obtainable by reaction of:

Moisture-curing, NCO-reactive polyurethane hotmelt adhesive composition

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Dormagen, Germany

Joachim Werner